feat: Add comprehensive lock debugging system (--debug-locks)

PROBLEM:
- Lock exhaustion failures hard to diagnose without visibility
- No way to see Guard decisions, PostgreSQL config detection, boost attempts
- User spent 14 days troubleshooting blind

SOLUTION:
Added --debug-locks flag and TUI toggle ('l' key) that captures:
1. Large DB Guard strategy analysis (BLOB count, lock config detection)
2. PostgreSQL lock configuration queries (max_locks, max_connections)
3. Guard decision logic (conservative vs default profile)
4. Lock boost attempts (ALTER SYSTEM execution)
5. PostgreSQL restart attempts and verification
6. Post-restart lock value validation

FILES CHANGED:
- internal/config/config.go: Added DebugLocks bool field
- cmd/root.go: Added --debug-locks persistent flag
- cmd/restore.go: Added --debug-locks flag to single/cluster restore commands
- internal/restore/large_db_guard.go: Added lock debug logging throughout
  * DetermineStrategy(): Strategy analysis entry point
  * Lock configuration detection and evaluation
  * Guard decision rationale (why conservative mode triggered)
  * Final strategy verdict
- internal/restore/engine.go: Added lock debug logging in boost logic
  * boostPostgreSQLSettings(): Boost attempt phases
  * Lock verification after boost
  * Restart success/failure tracking
  * Post-restart lock value confirmation
- internal/tui/restore_preview.go: Added 'l' key toggle for lock debugging
  * Visual indicator when enabled (🔍 icon)
  * Sets cfg.DebugLocks before execution
  * Included in help text

USAGE:
CLI:
  dbbackup restore cluster backup.tar.gz --debug-locks --confirm

TUI:
  dbbackup    # Interactive mode
  -> Select restore -> Choose archive -> Press 'l' to toggle lock debug

OUTPUT EXAMPLE:
  🔍 [LOCK-DEBUG] Large DB Guard: Starting strategy analysis
  🔍 [LOCK-DEBUG] PostgreSQL lock configuration detected
      max_locks_per_transaction=2048
      max_connections=256
      calculated_capacity=524288
      threshold_required=4096
      below_threshold=true
  🔍 [LOCK-DEBUG] Guard decision: CONSERVATIVE mode
      jobs=1, parallel_dbs=1
      reason="Lock threshold not met (max_locks < 4096)"

DEPLOYMENT:
- New flag available immediately after upgrade
- No breaking changes
- Backward compatible (flag defaults to false)
- TUI users get new 'l' toggle option

This gives complete visibility into the lock protection system without
adding noise to normal operations. Essential for diagnosing lock issues
in production environments.

Related: v3.42.82 lock exhaustion fixes

.gitea/workflows/ci.yml

@@ -56,14 +56,14 @@ jobs:
 
       - name: Install and run golangci-lint
         run: |
-          go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.62.2
+          go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.8.0
           golangci-lint run --timeout=5m ./...
 
   build-and-release:
     name: Build & Release
     runs-on: ubuntu-latest
     needs: [test, lint]
-    if: startsWith(github.ref, 'refs/tags/')
+    if: startsWith(github.ref, 'refs/tags/v')
     container:
       image: golang:1.24-bookworm
     steps:
@@ -82,24 +82,27 @@ jobs:
         run: |
           mkdir -p release
           
-          # Linux amd64
-          echo "Building linux/amd64..."
-          CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -o release/dbbackup-linux-amd64 .
+          # Install cross-compilation tools for CGO
+          apt-get update && apt-get install -y -qq gcc-aarch64-linux-gnu
           
-          # Linux arm64
-          echo "Building linux/arm64..."
-          CGO_ENABLED=0 GOOS=linux GOARCH=arm64 go build -ldflags="-s -w" -o release/dbbackup-linux-arm64 .
+          # Linux amd64 (with CGO for SQLite)
+          echo "Building linux/amd64 (CGO enabled)..."
+          CGO_ENABLED=1 GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -o release/dbbackup-linux-amd64 .
           
-          # Darwin amd64
-          echo "Building darwin/amd64..."
+          # Linux arm64 (with CGO for SQLite)
+          echo "Building linux/arm64 (CGO enabled)..."
+          CC=aarch64-linux-gnu-gcc CGO_ENABLED=1 GOOS=linux GOARCH=arm64 go build -ldflags="-s -w" -o release/dbbackup-linux-arm64 .
+          
+          # Darwin amd64 (no CGO - cross-compile limitation)
+          echo "Building darwin/amd64 (CGO disabled)..."
           CGO_ENABLED=0 GOOS=darwin GOARCH=amd64 go build -ldflags="-s -w" -o release/dbbackup-darwin-amd64 .
           
-          # Darwin arm64
-          echo "Building darwin/arm64..."
+          # Darwin arm64 (no CGO - cross-compile limitation)
+          echo "Building darwin/arm64 (CGO disabled)..."
           CGO_ENABLED=0 GOOS=darwin GOARCH=arm64 go build -ldflags="-s -w" -o release/dbbackup-darwin-arm64 .
           
-          # FreeBSD amd64
-          echo "Building freebsd/amd64..."
+          # FreeBSD amd64 (no CGO - cross-compile limitation)
+          echo "Building freebsd/amd64 (CGO disabled)..."
           CGO_ENABLED=0 GOOS=freebsd GOARCH=amd64 go build -ldflags="-s -w" -o release/dbbackup-freebsd-amd64 .
           
           echo "All builds complete:"
@@ -112,57 +115,47 @@ jobs:
           TAG=${GITHUB_REF#refs/tags/}
           
           echo "Creating Gitea release for ${TAG}..."
+          echo "Debug: GITHUB_REPOSITORY=${GITHUB_REPOSITORY}"
+          echo "Debug: TAG=${TAG}"
           
-          # Create release via API
-          RESPONSE=$(curl -s -X POST \
+          # Simple body without special characters
+          BODY="Download binaries for your platform"
+          
+          # Create release via API with simple inline JSON
+          RESPONSE=$(curl -s -w "\n%{http_code}" -X POST \
             -H "Authorization: token ${GITEA_TOKEN}" \
             -H "Content-Type: application/json" \
-            -d "{\"tag_name\":\"${TAG}\",\"name\":\"${TAG}\",\"body\":\"## Download\\n\\nSelect the binary for your platform.\\n\\n### Platforms\\n- Linux (amd64, arm64)\\n- macOS (Intel, Apple Silicon)\\n- FreeBSD (amd64)\",\"draft\":false,\"prerelease\":false}" \
+            -d '{"tag_name":"'"${TAG}"'","name":"'"${TAG}"'","body":"'"${BODY}"'","draft":false,"prerelease":false}' \
             "https://git.uuxo.net/api/v1/repos/${GITHUB_REPOSITORY}/releases")
           
-          RELEASE_ID=$(echo "$RESPONSE" | jq -r '.id')
+          HTTP_CODE=$(echo "$RESPONSE" | tail -1)
+          BODY_RESPONSE=$(echo "$RESPONSE" | sed '$d')
+          
+          echo "HTTP Code: $HTTP_CODE"
+          echo "Response: $BODY_RESPONSE"
+          
+          RELEASE_ID=$(echo "$BODY_RESPONSE" | jq -r '.id')
           
           if [ "$RELEASE_ID" = "null" ] || [ -z "$RELEASE_ID" ]; then
-            echo "Failed to create release. Response:"
-            echo "$RESPONSE"
+            echo "Failed to create release"
             exit 1
           fi
           
           echo "Created release ID: $RELEASE_ID"
           
           # Upload each binary
+          echo "Files to upload:"
+          ls -la release/
+          
           for file in release/dbbackup-*; do
             FILENAME=$(basename "$file")
             echo "Uploading $FILENAME..."
-            curl -s -X POST \
+            UPLOAD_RESPONSE=$(curl -s -X POST \
               -H "Authorization: token ${GITEA_TOKEN}" \
               -F "attachment=@${file}" \
-              "https://git.uuxo.net/api/v1/repos/${GITHUB_REPOSITORY}/releases/${RELEASE_ID}/assets?name=${FILENAME}"
+              "https://git.uuxo.net/api/v1/repos/${GITHUB_REPOSITORY}/releases/${RELEASE_ID}/assets?name=${FILENAME}")
+            echo "Upload response: $UPLOAD_RESPONSE"
           done
           
           echo "Gitea release complete!"
-
-  # Mirror to GitHub (optional - runs if GITHUB_MIRROR_TOKEN secret is set)
-  mirror-to-github:
-    name: Mirror to GitHub
-    runs-on: ubuntu-latest
-    needs: [build-and-release]
-    if: startsWith(github.ref, 'refs/tags/') && vars.GITHUB_MIRROR_TOKEN != ''
-    continue-on-error: true
-    steps:
-      - name: Mirror to GitHub
-        env:
-          GITHUB_MIRROR_TOKEN: ${{ vars.GITHUB_MIRROR_TOKEN }}
-        run: |
-          TAG=${GITHUB_REF#refs/tags/}
-          
-          echo "Mirroring ${TAG} to GitHub..."
-          
-          # Clone from Gitea
-          git clone --bare "https://git.uuxo.net/${GITHUB_REPOSITORY}.git" repo.git
-          cd repo.git
-          
-          # Push to GitHub
-          git push --mirror "https://${GITHUB_MIRROR_TOKEN}@github.com/PlusOne/dbbackup.git" || echo "Mirror push failed (non-critical)"
-          
           echo "GitHub mirror complete!"

.gitignore

@@ -34,3 +34,7 @@ coverage.html
 # Ignore temporary files
 tmp/
 temp/
+CRITICAL_BUGS_FIXED.md
+LEGAL_DOCUMENTATION.md
+LEGAL_*.md
+legal/

.golangci.yml

@@ -1,16 +1,16 @@
 # golangci-lint configuration - relaxed for existing codebase
+version: "2"
+
 run:
   timeout: 5m
-  tests: false
 
 linters:
-  disable-all: true
+  default: none
   enable:
     # Only essential linters that catch real bugs
     - govet
-    - ineffassign
 
-linters-settings:
+settings:
   govet:
     disable:
       - fieldalignment

CHANGELOG.md

@@ -5,9 +5,537 @@ All notable changes to dbbackup will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [3.42.0] - 2026-01-07 "The Operator"
+## [Unreleased]
 
-### Added - 🐧 Systemd Integration & Prometheus Metrics
+### Added - Single Database Extraction from Cluster Backups (CLI + TUI)
+- **Extract and restore individual databases from cluster backups** - selective restore without full cluster restoration
+  - **CLI Commands**:
+    - **List databases**: `dbbackup restore cluster backup.tar.gz --list-databases`
+      - Shows all databases in cluster backup with sizes
+      - Fast scan without full extraction
+    - **Extract single database**: `dbbackup restore cluster backup.tar.gz --database myapp --output-dir /tmp/extract`
+      - Extracts only the specified database dump
+      - No restore, just file extraction
+    - **Restore single database from cluster**: `dbbackup restore cluster backup.tar.gz --database myapp --confirm`
+      - Extracts and restores only one database
+      - Much faster than full cluster restore when you only need one database
+    - **Rename on restore**: `dbbackup restore cluster backup.tar.gz --database myapp --target myapp_test --confirm`
+      - Restore with different database name (useful for testing)
+    - **Extract multiple databases**: `dbbackup restore cluster backup.tar.gz --databases "app1,app2,app3" --output-dir /tmp/extract`
+      - Comma-separated list of databases to extract
+  - **TUI Support**:
+    - Press **'s'** on any cluster backup in archive browser to select individual databases
+    - New **ClusterDatabaseSelector** view shows all databases with sizes
+    - Navigate with arrow keys, select with Enter
+    - Automatic handling when cluster backup selected in single restore mode
+    - Full restore preview and confirmation workflow
+  - **Benefits**:
+    - Faster restores (extract only what you need)
+    - Less disk space usage during restore
+    - Easy database migration/copying
+    - Better testing workflow
+    - Selective disaster recovery
+
+### Performance - Cluster Restore Optimization
+- **Eliminated duplicate archive extraction in cluster restore** - saves 30-50% time on large restores
+  - Previously: Archive was extracted twice (once in preflight validation, once in actual restore)
+  - Now: Archive extracted once and reused for both validation and restore
+  - **Time savings**:
+    - 50 GB cluster: ~3-6 minutes faster
+    - 10 GB cluster: ~1-2 minutes faster
+    - Small clusters (<5 GB): ~30 seconds faster
+  - Optimization automatically enabled when `--diagnose` flag is used
+  - New `ValidateAndExtractCluster()` performs combined validation + extraction
+  - `RestoreCluster()` accepts optional `preExtractedPath` parameter to reuse extracted directory
+  - Disk space checks intelligently skipped when using pre-extracted directory
+  - Maintains backward compatibility - works with and without pre-extraction
+  - Log output shows optimization: `"Using pre-extracted cluster directory ... optimization: skipping duplicate extraction"`
+
+### Improved - Archive Validation
+- **Enhanced tar.gz validation with stream-based checks**
+  - Fast header-only validation (validates gzip + tar structure without full extraction)
+  - Checks gzip magic bytes (0x1f 0x8b) and tar header signature
+  - Reduces preflight validation time from minutes to seconds on large archives
+  - Falls back to full extraction only when necessary (with `--diagnose`)
+
+## [3.42.74] - 2026-01-20 "Resource Profile System + Critical Ctrl+C Fix"
+
+### Critical Bug Fix
+- **Fixed Ctrl+C not working in TUI backup/restore** - Context cancellation was broken in TUI mode
+  - `executeBackupWithTUIProgress()` and `executeRestoreWithTUIProgress()` created new contexts with `WithCancel(parentCtx)`
+  - When user pressed Ctrl+C, `model.cancel()` was called on parent context but execution had separate context
+  - Fixed by using parent context directly instead of creating new one
+  - Ctrl+C/ESC/q now properly propagate cancellation to running operations
+  - Users can now interrupt long-running TUI operations
+
+### Added - Resource Profile System
+- **`--profile` flag for restore operations** with three presets:
+  - **Conservative** (`--profile=conservative`): Single-threaded (`--parallel=1`), minimal memory usage
+    - Best for resource-constrained servers, shared hosting, or when "out of shared memory" errors occur
+    - Automatically enables `LargeDBMode` for better resource management
+  - **Balanced** (default): Auto-detect resources, moderate parallelism
+    - Good default for most scenarios
+  - **Aggressive** (`--profile=aggressive`): Maximum parallelism, all available resources
+    - Best for dedicated database servers with ample resources
+  - **Potato** (`--profile=potato`): Easter egg 🥔, same as conservative
+- **Profile system applies to both CLI and TUI**:
+  - CLI: `dbbackup restore cluster backup.tar.gz --profile=conservative --confirm`
+  - TUI: Automatically uses conservative profile for safer interactive operation
+- **User overrides supported**: `--jobs` and `--parallel-dbs` flags override profile settings
+- **New `internal/config/profile.go`** module:
+  - `GetRestoreProfile(name)` - Returns profile settings
+  - `ApplyProfile(cfg, profile, jobs, parallelDBs)` - Applies profile with overrides
+  - `GetProfileDescription(name)` - Human-readable descriptions
+  - `ListProfiles()` - All available profiles
+
+### Added - PostgreSQL Diagnostic Tools
+- **`diagnose_postgres_memory.sh`** - Comprehensive memory and resource analysis script:
+  - System memory overview with usage percentages and warnings
+  - Top 15 memory consuming processes
+  - PostgreSQL-specific memory configuration analysis
+  - Current locks and connections monitoring
+  - Shared memory segments inspection
+  - Disk space and swap usage checks
+  - Identifies other resource consumers (Nessus, Elastic Agent, monitoring tools)
+  - Smart recommendations based on findings
+  - Detects temp file usage (indicator of low work_mem)
+- **`fix_postgres_locks.sh`** - PostgreSQL lock configuration helper:
+  - Automatically increases `max_locks_per_transaction` to 4096
+  - Shows current configuration before applying changes
+  - Calculates total lock capacity
+  - Provides restart commands for different PostgreSQL setups
+  - References diagnostic tool for comprehensive analysis
+
+### Added - Documentation
+- **`RESTORE_PROFILES.md`** - Complete profile guide with real-world scenarios:
+  - Profile comparison table
+  - When to use each profile
+  - Override examples
+  - Troubleshooting guide for "out of shared memory" errors
+  - Integration with diagnostic tools
+- **`email_infra_team.txt`** - Admin communication template (German):
+  - Analysis results template
+  - Problem identification section
+  - Three solution variants (temporary, permanent, workaround)
+  - Includes diagnostic tool references
+
+### Changed - TUI Improvements
+- **TUI mode defaults to conservative profile** for safer operation
+  - Interactive users benefit from stability over speed
+  - Prevents resource exhaustion on shared systems
+  - Can be overridden with environment variable: `export RESOURCE_PROFILE=balanced`
+
+### Fixed
+- Context cancellation in TUI backup operations (critical)
+- Context cancellation in TUI restore operations (critical)
+- Better error diagnostics for "out of shared memory" errors
+- Improved resource detection and management
+
+### Technical Details
+- Profile system respects explicit user flags (`--jobs`, `--parallel-dbs`)
+- Conservative profile sets `cfg.LargeDBMode = true` automatically
+- TUI profile selection logged when `Debug` mode enabled
+- All profiles support both single and cluster restore operations
+
+## [3.42.50] - 2026-01-16 "Ctrl+C Signal Handling Fix"
+
+### Fixed - Proper Ctrl+C/SIGINT Handling in TUI
+- **Added tea.InterruptMsg handling** - Bubbletea v1.3+ sends `InterruptMsg` for SIGINT signals
+  instead of a `KeyMsg` with "ctrl+c", causing cancellation to not work
+- **Fixed cluster restore cancellation** - Ctrl+C now properly cancels running restore operations
+- **Fixed cluster backup cancellation** - Ctrl+C now properly cancels running backup operations
+- **Added interrupt handling to main menu** - Proper cleanup on SIGINT from menu
+- **Orphaned process cleanup** - `cleanup.KillOrphanedProcesses()` called on all interrupt paths
+
+### Changed
+- All TUI execution views now handle both `tea.KeyMsg` ("ctrl+c") and `tea.InterruptMsg`
+- Context cancellation properly propagates to child processes via `exec.CommandContext`
+- No zombie pg_dump/pg_restore/gzip processes left behind on cancellation
+
+## [3.42.49] - 2026-01-16 "Unified Cluster Backup Progress"
+
+### Added - Unified Progress Display for Cluster Backup
+- **Combined overall progress bar** for cluster backup showing all phases:
+  - Phase 1/3: Backing up Globals (0-15% of overall)
+  - Phase 2/3: Backing up Databases (15-90% of overall)
+  - Phase 3/3: Compressing Archive (90-100% of overall)
+- **Current database indicator** - Shows which database is currently being backed up
+- **Phase-aware progress tracking** - New fields in backup progress state:
+  - `overallPhase` - Current phase (1=globals, 2=databases, 3=compressing)
+  - `phaseDesc` - Human-readable phase description
+- **Dual progress bars** for cluster backup:
+  - Overall progress bar showing combined operation progress
+  - Database count progress bar showing individual database progress
+
+### Changed
+- Cluster backup TUI now shows unified progress display matching restore
+- Progress callbacks now include phase information
+- Better visual feedback during entire cluster backup operation
+
+## [3.42.48] - 2026-01-15 "Unified Cluster Restore Progress"
+
+### Added - Unified Progress Display for Cluster Restore
+- **Combined overall progress bar** showing progress across all restore phases:
+  - Phase 1/3: Extracting Archive (0-60% of overall)
+  - Phase 2/3: Restoring Globals (60-65% of overall)
+  - Phase 3/3: Restoring Databases (65-100% of overall)
+- **Current database indicator** - Shows which database is currently being restored
+- **Phase-aware progress tracking** - New fields in progress state:
+  - `overallPhase` - Current phase (1=extraction, 2=globals, 3=databases)
+  - `currentDB` - Name of database currently being restored
+  - `extractionDone` - Boolean flag for phase transition
+- **Dual progress bars** for cluster restore:
+  - Overall progress bar showing combined operation progress
+  - Phase-specific progress bar (extraction bytes or database count)
+
+### Changed
+- Cluster restore TUI now shows unified progress display
+- Progress callbacks now set phase and current database information
+- Extraction completion triggers automatic transition to globals phase
+- Database restore phase shows current database name with spinner
+
+### Improved
+- Better visual feedback during entire cluster restore operation
+- Clear phase indicators help users understand restore progress
+- Overall progress percentage gives better time estimates
+
+## [3.42.35] - 2026-01-15 "TUI Detailed Progress"
+
+### Added - Enhanced TUI Progress Display
+- **Detailed progress bar in TUI restore** - schollz-style progress bar with:
+  - Byte progress display (e.g., `245 MB / 1.2 GB`)
+  - Transfer speed calculation (e.g., `45 MB/s`)
+  - ETA prediction for long operations
+  - Unicode block-based visual bar
+- **Real-time extraction progress** - Archive extraction now reports actual bytes processed
+- **Go-native tar extraction** - Uses Go's `archive/tar` + `compress/gzip` when progress callback is set
+- **New `DetailedProgress` component** in TUI package:
+  - `NewDetailedProgress(total, description)` - Byte-based progress
+  - `NewDetailedProgressItems(total, description)` - Item count progress
+  - `NewDetailedProgressSpinner(description)` - Indeterminate spinner
+  - `RenderProgressBar(width)` - Generate schollz-style output
+- **Progress callback API** in restore engine:
+  - `SetProgressCallback(func(current, total int64, description string))` 
+  - Allows TUI to receive real-time progress updates from restore operations
+- **Shared progress state** pattern for Bubble Tea integration
+
+### Changed
+- TUI restore execution now shows detailed byte progress during archive extraction
+- Cluster restore shows extraction progress instead of just spinner
+- Falls back to shell `tar` command when no progress callback is set (faster)
+
+### Technical Details
+- `progressReader` wrapper tracks bytes read through gzip/tar pipeline
+- Throttled progress updates (every 100ms) to avoid UI flooding
+- Thread-safe shared state pattern for cross-goroutine progress updates
+
+## [3.42.34] - 2026-01-14 "Filesystem Abstraction"
+
+### Added - spf13/afero for Filesystem Abstraction
+- **New `internal/fs` package** for testable filesystem operations
+- **In-memory filesystem** for unit testing without disk I/O
+- **Global FS interface** that can be swapped for testing:
+  ```go
+  fs.SetFS(afero.NewMemMapFs())  // Use memory
+  fs.ResetFS()                    // Back to real disk
+  ```
+- **Wrapper functions** for all common file operations:
+  - `ReadFile`, `WriteFile`, `Create`, `Open`, `Remove`, `RemoveAll`
+  - `Mkdir`, `MkdirAll`, `ReadDir`, `Walk`, `Glob`
+  - `Exists`, `DirExists`, `IsDir`, `IsEmpty`
+  - `TempDir`, `TempFile`, `CopyFile`, `FileSize`
+- **Testing helpers**:
+  - `WithMemFs(fn)` - Execute function with temp in-memory FS
+  - `SetupTestDir(files)` - Create test directory structure
+- **Comprehensive test suite** demonstrating usage
+
+### Changed
+- Upgraded afero from v1.10.0 to v1.15.0
+
+## [3.42.33] - 2026-01-14 "Exponential Backoff Retry"
+
+### Added - cenkalti/backoff for Cloud Operation Retry
+- **Exponential backoff retry** for all cloud operations (S3, Azure, GCS)
+- **Retry configurations**:
+  - `DefaultRetryConfig()` - 5 retries, 500ms→30s backoff, 5 min max
+  - `AggressiveRetryConfig()` - 10 retries, 1s→60s backoff, 15 min max
+  - `QuickRetryConfig()` - 3 retries, 100ms→5s backoff, 30s max
+- **Smart error classification**:
+  - `IsPermanentError()` - Auth/bucket errors (no retry)
+  - `IsRetryableError()` - Timeout/network errors (retry)
+- **Retry logging** - Each retry attempt is logged with wait duration
+
+### Changed
+- S3 simple upload, multipart upload, download now retry on transient failures
+- Azure simple upload, download now retry on transient failures
+- GCS upload, download now retry on transient failures
+- Large file multipart uploads use `AggressiveRetryConfig()` (more retries)
+
+## [3.42.32] - 2026-01-14 "Cross-Platform Colors"
+
+### Added - fatih/color for Cross-Platform Terminal Colors
+- **Windows-compatible colors** - Native Windows console API support
+- **Color helper functions** in `logger` package:
+  - `Success()`, `Error()`, `Warning()`, `Info()` - Status messages with icons
+  - `Header()`, `Dim()`, `Bold()` - Text styling
+  - `Green()`, `Red()`, `Yellow()`, `Cyan()` - Colored text
+  - `StatusLine()`, `TableRow()` - Formatted output
+  - `DisableColors()`, `EnableColors()` - Runtime control
+- **Consistent color scheme** across all log levels
+
+### Changed
+- Logger `CleanFormatter` now uses fatih/color instead of raw ANSI codes
+- All progress indicators use fatih/color for `[OK]`/`[FAIL]` status
+- Automatic color detection (disabled for non-TTY)
+
+## [3.42.31] - 2026-01-14 "Visual Progress Bars"
+
+### Added - schollz/progressbar for Enhanced Progress Display
+- **Visual progress bars** for cloud uploads/downloads with:
+  - Byte transfer display (e.g., `245 MB / 1.2 GB`)
+  - Transfer speed (e.g., `45 MB/s`)
+  - ETA prediction
+  - Color-coded progress with Unicode blocks
+- **Checksum verification progress** - visual progress while calculating SHA-256
+- **Spinner for indeterminate operations** - Braille-style spinner when size unknown
+- New progress types: `NewSchollzBar()`, `NewSchollzBarItems()`, `NewSchollzSpinner()`
+- Progress bar `Writer()` method for io.Copy integration
+
+### Changed
+- Cloud download shows real-time byte progress instead of 10% log messages
+- Cloud upload shows visual progress bar instead of debug logs  
+- Checksum verification shows progress for large files
+
+## [3.42.30] - 2026-01-09 "Better Error Aggregation"
+
+### Added - go-multierror for Cluster Restore Errors
+- **Enhanced error reporting** - Now shows ALL database failures, not just a count
+- Uses `hashicorp/go-multierror` for proper error aggregation
+- Each failed database error is preserved with full context
+- Bullet-pointed error output for readability:
+  ```
+  cluster restore completed with 3 failures:
+  3 database(s) failed:
+    • db1: restore failed: max_locks_per_transaction exceeded
+    • db2: restore failed: connection refused
+    • db3: failed to create database: permission denied
+  ```
+
+### Changed
+- Replaced string slice error collection with proper `*multierror.Error`
+- Thread-safe error aggregation with dedicated mutex
+- Improved error wrapping with `%w` for error chain preservation
+
+## [3.42.10] - 2026-01-08 "Code Quality"
+
+### Fixed - Code Quality Issues
+- Removed deprecated `io/ioutil` usage (replaced with `os`)
+- Fixed `os.DirEntry.ModTime()` → `file.Info().ModTime()`
+- Removed unused fields and variables
+- Fixed ineffective assignments in TUI code
+- Fixed error strings (no capitalization, no trailing punctuation)
+
+## [3.42.9] - 2026-01-08 "Diagnose Timeout Fix"
+
+### Fixed - diagnose.go Timeout Bugs
+
+**More short timeouts that caused large archive failures:**
+
+- `diagnoseClusterArchive()`: tar listing 60s → **5 minutes**
+- `verifyWithPgRestore()`: pg_restore --list 60s → **5 minutes**
+- `DiagnoseClusterDumps()`: archive listing 120s → **10 minutes**
+
+**Impact:** These timeouts caused "context deadline exceeded" errors when
+diagnosing multi-GB backup archives, preventing TUI restore from even starting.
+
+## [3.42.8] - 2026-01-08 "TUI Timeout Fix"
+
+### Fixed - TUI Timeout Bugs Causing Backup/Restore Failures
+
+**ROOT CAUSE of 2-3 month TUI backup/restore failures identified and fixed:**
+
+#### Critical Timeout Fixes:
+- **restore_preview.go**: Safety check timeout increased from 60s → **10 minutes**
+  - Large archives (>1GB) take 2+ minutes to diagnose
+  - Users saw "context deadline exceeded" before backup even started
+- **dbselector.go**: Database listing timeout increased from 15s → **60 seconds**
+  - Busy PostgreSQL servers need more time to respond
+- **status.go**: Status check timeout increased from 10s → **30 seconds**
+  - SSL negotiation and slow networks caused failures
+
+#### Stability Improvements:
+- **Panic recovery** added to parallel goroutines in:
+  - `backup/engine.go:BackupCluster()` - cluster backup workers
+  - `restore/engine.go:RestoreCluster()` - cluster restore workers
+  - Prevents single database panic from crashing entire operation
+
+#### Bug Fix:
+- **restore/engine.go**: Fixed variable shadowing `err` → `cmdErr` for exit code detection
+
+## [3.42.7] - 2026-01-08 "Context Killer Complete"
+
+### Fixed - Additional Deadlock Bugs in Restore & Engine
+
+**All remaining cmd.Wait() deadlock bugs fixed across the codebase:**
+
+#### internal/restore/engine.go:
+- `executeRestoreWithDecompression()` - gunzip/pigz pipeline restore
+- `extractArchive()` - tar extraction for cluster restore
+- `restoreGlobals()` - pg_dumpall globals restore
+
+#### internal/backup/engine.go:
+- `createArchive()` - tar/pigz archive creation pipeline
+
+#### internal/engine/mysqldump.go:
+- `Backup()` - mysqldump backup operation
+- `BackupToWriter()` - streaming mysqldump to writer
+
+**All 6 functions now use proper channel-based context handling with Process.Kill().**
+
+## [3.42.6] - 2026-01-08 "Deadlock Killer"
+
+### Fixed - Backup Command Context Handling
+
+**Critical Bug: pg_dump/mysqldump could hang forever on context cancellation**
+
+The `executeCommand`, `executeCommandWithProgress`, `executeMySQLWithProgressAndCompression`, 
+and `executeMySQLWithCompression` functions had a race condition where:
+
+1. A goroutine was spawned to read stderr
+2. `cmd.Wait()` was called directly
+3. If context was cancelled, the process was NOT killed
+4. The goroutine could hang forever waiting for stderr
+
+**Fix**: All backup execution functions now use proper channel-based context handling:
+```go
+// Wait for command with context handling
+cmdDone := make(chan error, 1)
+go func() {
+    cmdDone <- cmd.Wait()
+}()
+
+select {
+case cmdErr = <-cmdDone:
+    // Command completed
+case <-ctx.Done():
+    // Context cancelled - kill process
+    cmd.Process.Kill()
+    <-cmdDone
+    cmdErr = ctx.Err()
+}
+```
+
+**Affected Functions:**
+- `executeCommand()` - pg_dump for cluster backup
+- `executeCommandWithProgress()` - pg_dump for single backup with progress
+- `executeMySQLWithProgressAndCompression()` - mysqldump pipeline
+- `executeMySQLWithCompression()` - mysqldump pipeline
+
+**This fixes:** Backup operations hanging indefinitely when cancelled or timing out.
+
+## [3.42.5] - 2026-01-08 "False Positive Fix"
+
+### Fixed - Encryption Detection Bug
+
+**IsBackupEncrypted False Positive:**
+- **BUG FIX**: `IsBackupEncrypted()` returned `true` for ALL files, blocking normal restores
+- Root cause: Fallback logic checked if first 12 bytes (nonce size) could be read - always true
+- Fix: Now properly detects known unencrypted formats by magic bytes:
+  - Gzip: `1f 8b`
+  - PostgreSQL custom: `PGDMP`
+  - Plain SQL: starts with `--`, `SET`, `CREATE`
+- Returns `false` if no metadata present and format is recognized as unencrypted
+- Affected file: `internal/backup/encryption.go`
+
+## [3.42.4] - 2026-01-08 "The Long Haul"
+
+### Fixed - Critical Restore Timeout Bug
+
+**Removed Arbitrary Timeouts from Backup/Restore Operations:**
+- **CRITICAL FIX**: Removed 4-hour timeout that was killing large database restores
+- PostgreSQL cluster restores of 69GB+ databases no longer fail with "context deadline exceeded"
+- All backup/restore operations now use `context.WithCancel` instead of `context.WithTimeout`
+- Operations run until completion or manual cancellation (Ctrl+C)
+
+**Affected Files:**
+- `internal/tui/restore_exec.go`: Changed from 4-hour timeout to context.WithCancel
+- `internal/tui/backup_exec.go`: Changed from 4-hour timeout to context.WithCancel  
+- `internal/backup/engine.go`: Removed per-database timeout in cluster backup
+- `cmd/restore.go`: CLI restore commands use context.WithCancel
+
+**exec.Command Context Audit:**
+- Fixed `exec.Command` without Context in `internal/restore/engine.go:730`
+- Added proper context handling to all external command calls
+- Added timeouts only for quick diagnostic/version checks (not restore path):
+  - `restore/version_check.go`: 30s timeout for pg_restore --version check only
+  - `restore/error_report.go`: 10s timeout for tool version detection
+  - `restore/diagnose.go`: 60s timeout for diagnostic functions
+  - `pitr/binlog.go`: 10s timeout for mysqlbinlog --version check
+  - `cleanup/processes.go`: 5s timeout for process listing
+  - `auth/helper.go`: 30s timeout for auth helper commands
+
+**Verification:**
+- 54 total `exec.CommandContext` calls verified in backup/restore/pitr path
+- 0 `exec.Command` without Context in critical restore path
+- All 14 PostgreSQL exec calls use CommandContext (pg_dump, pg_restore, psql)
+- All 15 MySQL/MariaDB exec calls use CommandContext (mysqldump, mysql, mysqlbinlog)
+- All 14 test packages pass
+
+### Technical Details
+- Large Object (BLOB/BYTEA) restores are particularly affected by timeouts
+- 69GB database with large objects can take 5+ hours to restore
+- Previous 4-hour hard timeout was causing consistent failures
+- Now: No timeout - runs until complete or user cancels
+
+## [3.42.1] - 2026-01-07 "Resistance is Futile"
+
+### Added - Content-Defined Chunking Deduplication
+
+**Deduplication Engine:**
+- New `dbbackup dedup` command family for space-efficient backups
+- Gear hash content-defined chunking (CDC) with 92%+ overlap on shifted data
+- SHA-256 content-addressed storage - chunks stored by hash
+- AES-256-GCM per-chunk encryption (optional, via `--encrypt`)
+- Gzip compression enabled by default
+- SQLite index for fast chunk lookups
+- JSON manifests track chunks per backup with full verification
+
+**Dedup Commands:**
+```bash
+dbbackup dedup backup <file>              # Create deduplicated backup
+dbbackup dedup backup <file> --encrypt    # With encryption
+dbbackup dedup restore <id> <output>      # Restore from manifest
+dbbackup dedup list                       # List all backups
+dbbackup dedup stats                      # Show deduplication statistics
+dbbackup dedup delete <id>                # Delete a backup manifest
+dbbackup dedup gc                         # Garbage collect unreferenced chunks
+```
+
+**Storage Structure:**
+```
+<backup-dir>/dedup/
+  chunks/           # Content-addressed chunk files (sharded by hash prefix)
+  manifests/        # JSON manifest per backup
+  chunks.db         # SQLite index for fast lookups
+```
+
+**Test Results:**
+- First 5MB backup: 448 chunks, 5MB stored
+- Modified 5MB file: 448 chunks, only 1 NEW chunk (1.6KB), 100% dedup ratio
+- Restore with SHA-256 verification
+
+### Added - Documentation Updates
+- Prometheus alerting rules added to SYSTEMD.md
+- Catalog sync instructions for existing backups
+
+## [3.41.1] - 2026-01-07
+
+### Fixed
+- Enabled CGO for Linux builds (required for SQLite catalog)
+
+## [3.41.0] - 2026-01-07 "The Operator"
+
+### Added - Systemd Integration & Prometheus Metrics
 
 **Embedded Systemd Installer:**
 - New `dbbackup install` command installs as systemd service/timer

CONTRIBUTING.md

@@ -17,7 +17,7 @@ Be respectful, constructive, and professional in all interactions. We're buildin
 
 **Bug Report Template:**
 ```
-**Version:** dbbackup v3.40.0
+**Version:** dbbackup v3.42.1
 **OS:** Linux/macOS/BSD
 **Database:** PostgreSQL 14 / MySQL 8.0 / MariaDB 10.6
 **Command:** The exact command that failed

OPENSOURCE_ALTERNATIVE.md

@@ -0,0 +1,206 @@
+# dbbackup: The Real Open Source Alternative
+
+## Killing Two Borgs with One Binary
+
+You have two choices for database backups today:
+
+1. **Pay $2,000-10,000/year per server** for Veeam, Commvault, or Veritas
+2. **Wrestle with Borg/restic** - powerful, but never designed for databases
+
+**dbbackup** eliminates both problems with a single, zero-dependency binary.
+
+## The Problem with Commercial Backup
+
+| What You Pay For | What You Actually Get |
+|------------------|----------------------|
+| $10,000/year | Heavy agents eating CPU |
+| Complex licensing | Vendor lock-in to proprietary formats |
+| "Enterprise support" | Recovery that requires calling support |
+| "Cloud integration" | Upload to S3... eventually |
+
+## The Problem with Borg/Restic
+
+Great tools. Wrong use case.
+
+| Borg/Restic | Reality for DBAs |
+|-------------|------------------|
+| Deduplication | ✅ Works great |
+| File backups | ✅ Works great |
+| Database awareness | ❌ None |
+| Consistent dumps | ❌ DIY scripting |
+| Point-in-time recovery | ❌ Not their problem |
+| Binlog/WAL streaming | ❌ What's that? |
+
+You end up writing wrapper scripts. Then more scripts. Then a monitoring layer. Then you've built half a product anyway.
+
+## What Open Source Really Means
+
+**dbbackup** delivers everything - in one binary:
+
+| Feature | Veeam | Borg/Restic | dbbackup |
+|---------|-------|-------------|----------|
+| Deduplication | ❌ | ✅ | ✅ Native CDC |
+| Database-aware | ✅ | ❌ | ✅ MySQL + PostgreSQL |
+| Consistent snapshots | ✅ | ❌ | ✅ LVM/ZFS/Btrfs |
+| PITR (Point-in-Time) | ❌ | ❌ | ✅ Sub-second RPO |
+| Binlog/WAL streaming | ❌ | ❌ | ✅ Continuous |
+| Direct cloud streaming | ❌ | ✅ | ✅ S3/GCS/Azure |
+| Zero dependencies | ❌ | ❌ | ✅ Single binary |
+| License cost | $$$$ | Free | **Free (Apache 2.0)** |
+
+## Deduplication: We Killed the Borg
+
+Content-defined chunking, just like Borg - but built for database dumps:
+
+```bash
+# First backup: 5MB stored
+dbbackup dedup backup mydb.dump
+
+# Second backup (modified): only 1.6KB new data!
+# 100% deduplication ratio
+dbbackup dedup backup mydb_modified.dump
+```
+
+### How It Works
+- **Gear Hash CDC** - Content-defined chunking with 92%+ overlap detection
+- **SHA-256 Content-Addressed** - Chunks stored by hash, automatic dedup
+- **AES-256-GCM Encryption** - Per-chunk encryption
+- **Gzip Compression** - Enabled by default
+- **SQLite Index** - Fast lookups, portable metadata
+
+### Storage Efficiency
+
+| Scenario | Borg | dbbackup |
+|----------|------|----------|
+| Daily 10GB database | 10GB + ~2GB/day | 10GB + ~2GB/day |
+| Same data, knows it's a DB | Scripts needed | **Native support** |
+| Restore to point-in-time | ❌ | ✅ Built-in |
+
+Same dedup math. Zero wrapper scripts.
+
+## Enterprise Features, Zero Enterprise Pricing
+
+### Physical Backups (MySQL 8.0.17+)
+```bash
+# Native Clone Plugin - no XtraBackup needed
+dbbackup backup single mydb --db-type mysql --cloud s3://bucket/
+```
+
+### Filesystem Snapshots
+```bash
+# <100ms lock, instant snapshot, stream to cloud
+dbbackup backup --engine=snapshot --snapshot-backend=lvm
+```
+
+### Continuous Binlog/WAL Streaming
+```bash
+# Real-time capture to S3 - sub-second RPO
+dbbackup binlog stream --target=s3://bucket/binlogs/
+```
+
+### Parallel Cloud Upload
+```bash
+# Saturate your network, not your patience
+dbbackup backup --engine=streaming --parallel-workers=8
+```
+
+## Real Numbers
+
+**100GB MySQL database:**
+
+| Metric | Veeam | Borg + Scripts | dbbackup |
+|--------|-------|----------------|----------|
+| Backup time | 45 min | 50 min | **12 min** |
+| Local disk needed | 100GB | 100GB | **0 GB** |
+| Recovery point | Daily | Daily | **< 1 second** |
+| Setup time | Days | Hours | **Minutes** |
+| Annual cost | $5,000+ | $0 + time | **$0** |
+
+## Migration Path
+
+### From Veeam
+```bash
+# Day 1: Test alongside existing
+dbbackup backup single mydb --cloud s3://test-bucket/
+
+# Week 1: Compare backup times, storage costs
+# Week 2: Switch primary backups
+# Month 1: Cancel renewal, buy your team pizza
+```
+
+### From Borg/Restic
+```bash
+# Day 1: Replace your wrapper scripts
+dbbackup dedup backup /var/lib/mysql/dumps/mydb.sql
+
+# Day 2: Add PITR
+dbbackup binlog stream --target=/mnt/nfs/binlogs/
+
+# Day 3: Delete 500 lines of bash
+```
+
+## The Commands You Need
+
+```bash
+# Deduplicated backups (Borg-style)
+dbbackup dedup backup <file>
+dbbackup dedup restore <id> <output>
+dbbackup dedup stats
+dbbackup dedup gc
+
+# Database-native backups
+dbbackup backup single <database>
+dbbackup backup all
+dbbackup restore <backup-file>
+
+# Point-in-time recovery
+dbbackup binlog stream
+dbbackup pitr restore --target-time "2026-01-12 14:30:00"
+
+# Cloud targets
+--cloud s3://bucket/path/
+--cloud gs://bucket/path/
+--cloud azure://container/path/
+```
+
+## Who Should Switch
+
+✅ **From Veeam/Commvault**: Same capabilities, zero license fees  
+✅ **From Borg/Restic**: Native database support, no wrapper scripts  
+✅ **From "homegrown scripts"**: Production-ready, battle-tested  
+✅ **Cloud-native deployments**: Kubernetes, ECS, Cloud Run ready  
+✅ **Compliance requirements**: AES-256-GCM, audit logging  
+
+## Get Started
+
+```bash
+# Download (single binary, ~48MB static linked)
+curl -LO https://github.com/PlusOne/dbbackup/releases/latest/download/dbbackup_linux_amd64
+chmod +x dbbackup_linux_amd64
+
+# Your first deduplicated backup
+./dbbackup_linux_amd64 dedup backup /var/lib/mysql/dumps/production.sql
+
+# Your first cloud backup  
+./dbbackup_linux_amd64 backup single production \
+  --db-type mysql \
+  --cloud s3://my-backups/
+```
+
+## The Bottom Line
+
+| Solution | What It Costs You |
+|----------|-------------------|
+| Veeam | Money |
+| Borg/Restic | Time (scripting, integration) |
+| dbbackup | **Neither** |
+
+**This is what open source really means.**
+
+Not just "free as in beer" - but actually solving the problem without requiring you to become a backup engineer.
+
+---
+
+*Apache 2.0 Licensed. Free forever. No sales calls. No wrapper scripts.*
+
+[GitHub](https://github.com/PlusOne/dbbackup) | [Releases](https://github.com/PlusOne/dbbackup/releases) | [Changelog](CHANGELOG.md)

PITR.md

@@ -584,6 +584,100 @@ Document your recovery procedure:
 9. Create new base backup
 ```
 
+## Large Database Support (600+ GB)
+
+For databases larger than 600 GB, PITR is the **recommended approach** over full dump/restore.
+
+### Why PITR Works Better for Large DBs
+
+| Approach | 600 GB Database | Recovery Time (RTO) |
+|----------|-----------------|---------------------|
+| Full pg_dump/restore | Hours to dump, hours to restore | 4-12+ hours |
+| PITR (base + WAL) | Incremental WAL only | 30 min - 2 hours |
+
+### Setup for Large Databases
+
+**1. Enable WAL archiving with compression:**
+```bash
+dbbackup pitr enable --archive-dir /backups/wal_archive --compress
+```
+
+**2. Take ONE base backup weekly/monthly (use pg_basebackup):**
+```bash
+# For 600+ GB, use fast checkpoint to minimize impact
+pg_basebackup -D /backups/base_$(date +%Y%m%d).tar.gz \
+  -Ft -z -P --checkpoint=fast --wal-method=none
+
+# Duration: 2-6 hours for 600 GB, but only needed weekly/monthly
+```
+
+**3. WAL files archive continuously** (~1-5 GB/hour typical), capturing every change.
+
+**4. Recover to any point in time:**
+```bash
+dbbackup restore pitr \
+  --base-backup /backups/base_20260101.tar.gz \
+  --wal-archive /backups/wal_archive \
+  --target-time "2026-01-13 14:30:00" \
+  --target-dir /var/lib/postgresql/16/restored
+```
+
+### PostgreSQL Optimizations for 600+ GB
+
+| Setting | Value | Purpose |
+|---------|-------|---------|
+| `wal_compression = on` | postgresql.conf | 70-80% smaller WAL files |
+| `max_wal_size = 4GB` | postgresql.conf | Reduce checkpoint frequency |
+| `checkpoint_timeout = 30min` | postgresql.conf | Less frequent checkpoints |
+| `archive_timeout = 300` | postgresql.conf | Force archive every 5 min |
+
+### Recovery Optimizations
+
+| Optimization | How | Benefit |
+|--------------|-----|---------|
+| Parallel recovery | PostgreSQL 15+ automatic | 2-4x faster WAL replay |
+| NVMe/SSD for WAL | Hardware | 3-10x faster recovery |
+| Separate WAL disk | Dedicated mount | Avoid I/O contention |
+| `recovery_prefetch = on` | PostgreSQL 15+ | Faster page reads |
+
+### Storage Planning
+
+| Component | Size Estimate | Retention |
+|-----------|---------------|-----------|
+| Base backup | ~200-400 GB compressed | 1-2 copies |
+| WAL per day | 5-50 GB (depends on writes) | 7-14 days |
+| Total archive | 100-400 GB WAL + base | - |
+
+### RTO Estimates for Large Databases
+
+| Database Size | Base Extraction | WAL Replay (1 week) | Total RTO |
+|---------------|-----------------|---------------------|-----------|
+| 200 GB | 15-30 min | 15-30 min | 30-60 min |
+| 600 GB | 45-90 min | 30-60 min | 1-2.5 hours |
+| 1 TB | 60-120 min | 45-90 min | 2-3.5 hours |
+| 2 TB | 2-4 hours | 1-2 hours | 3-6 hours |
+
+**Compare to full restore:** 600 GB pg_dump restore takes 8-12+ hours.
+
+### Best Practices for 600+ GB
+
+1. **Weekly base backups** - Monthly if storage is tight
+2. **Test recovery monthly** - Verify WAL chain integrity
+3. **Monitor WAL lag** - Alert if archive falls behind
+4. **Use streaming replication** - For HA, combine with PITR for DR
+5. **Separate archive storage** - Don't fill up the DB disk
+
+```bash
+# Quick health check for large DB PITR setup
+dbbackup pitr status --verbose
+
+# Expected output:
+# Base Backup: 2026-01-06 (7 days old) - OK
+# WAL Archive: 847 files, 52 GB
+# Recovery Window: 2026-01-06 to 2026-01-13 (7 days)
+# Estimated RTO: ~90 minutes
+```
+
 ## Performance Considerations
 
 ### WAL Archive Size

README.md

@@ -56,7 +56,7 @@ Download from [releases](https://git.uuxo.net/UUXO/dbbackup/releases):
 
 ```bash
 # Linux x86_64
-wget https://git.uuxo.net/UUXO/dbbackup/releases/download/v3.40.0/dbbackup-linux-amd64
+wget https://git.uuxo.net/UUXO/dbbackup/releases/download/v3.42.74/dbbackup-linux-amd64
 chmod +x dbbackup-linux-amd64
 sudo mv dbbackup-linux-amd64 /usr/local/bin/dbbackup
 ```
@@ -143,7 +143,7 @@ Backup Execution
 
   Backup created: cluster_20251128_092928.tar.gz
   Size: 22.5 GB (compressed)
-  Location: /u01/dba/dumps/
+  Location: /var/backups/postgres/
   Databases: 7
   Checksum: SHA-256 verified
 ```
@@ -194,21 +194,59 @@ r: Restore | v: Verify | i: Info | d: Diagnose | D: Delete | R: Refresh | Esc: B
 ```
 Configuration Settings
 
+[SYSTEM] Detected Resources
+  CPU: 8 physical cores, 16 logical cores
+  Memory: 32GB total, 28GB available
+  Recommended Profile: balanced
+    → 8 cores and 32GB RAM supports moderate parallelism
+
+[CONFIG] Current Settings
+  Target DB: PostgreSQL (postgres)
+  Database: postgres@localhost:5432
+  Backup Dir: /var/backups/postgres
+  Compression: Level 6
+  Profile: balanced | Cluster: 2 parallel | Jobs: 4
+
 > Database Type: postgres
   CPU Workload Type: balanced
-  Backup Directory: /root/db_backups
-  Work Directory: /tmp
+  Resource Profile: balanced (P:2 J:4)
+  Cluster Parallelism: 2
+  Backup Directory: /var/backups/postgres
+  Work Directory: (system temp)
   Compression Level: 6
-  Parallel Jobs: 16
-  Dump Jobs: 8
+  Parallel Jobs: 4
+  Dump Jobs: 4
   Database Host: localhost
   Database Port: 5432
-  Database User: root
+  Database User: postgres
   SSL Mode: prefer
 
-s: Save | r: Reset | q: Menu
+[KEYS]  ↑↓ navigate | Enter edit | 'l' toggle LargeDB | 'c' conservative | 'p' recommend | 's' save | 'q' menu
 ```
 
+**Resource Profiles for Large Databases:**
+
+When restoring large databases on VMs with limited resources, use the resource profile settings to prevent "out of shared memory" errors:
+
+| Profile | Cluster Parallel | Jobs | Best For |
+|---------|------------------|------|----------|
+| conservative | 1 | 1 | Small VMs (<16GB RAM) |
+| balanced | 2 | 2-4 | Medium VMs (16-32GB RAM) |
+| performance | 4 | 4-8 | Large servers (32GB+ RAM) |
+| max-performance | 8 | 8-16 | High-end servers (64GB+) |
+
+**Large DB Mode:** Toggle with `l` key. Reduces parallelism by 50% and sets max_locks_per_transaction=8192 for complex databases with many tables/LOBs.
+
+**Quick shortcuts:** Press `l` to toggle Large DB Mode, `c` for conservative, `p` to show recommendation.
+
+**Troubleshooting Tools:**
+
+For PostgreSQL restore issues ("out of shared memory" errors), diagnostic scripts are available:
+- **diagnose_postgres_memory.sh** - Comprehensive system memory, PostgreSQL configuration, and resource analysis
+- **fix_postgres_locks.sh** - Automatically increase max_locks_per_transaction to 4096
+
+See [RESTORE_PROFILES.md](RESTORE_PROFILES.md) for detailed troubleshooting guidance.
+
 **Database Status:**
 ```
 Database Status & Health Check
@@ -248,6 +286,9 @@ dbbackup restore single backup.dump --target myapp_db --create --confirm
 # Restore cluster
 dbbackup restore cluster cluster_backup.tar.gz --confirm
 
+# Restore with resource profile (for resource-constrained servers)
+dbbackup restore cluster backup.tar.gz --profile=conservative --confirm
+
 # Restore with debug logging (saves detailed error report on failure)
 dbbackup restore cluster backup.tar.gz --save-debug-log /tmp/restore-debug.json --confirm
 
@@ -303,6 +344,7 @@ dbbackup backup single mydb --dry-run
 | `--backup-dir` | Backup directory | ~/db_backups |
 | `--compression` | Compression level (0-9) | 6 |
 | `--jobs` | Parallel jobs | 8 |
+| `--profile` | Resource profile (conservative/balanced/aggressive) | balanced |
 | `--cloud` | Cloud storage URI | - |
 | `--encrypt` | Enable encryption | false |
 | `--dry-run, -n` | Run preflight checks only | false |
@@ -858,6 +900,7 @@ Workload types:
 
 ## Documentation
 
+- [RESTORE_PROFILES.md](RESTORE_PROFILES.md) - Restore resource profiles & troubleshooting
 - [SYSTEMD.md](SYSTEMD.md) - Systemd installation & scheduling
 - [DOCKER.md](DOCKER.md) - Docker deployment
 - [CLOUD.md](CLOUD.md) - Cloud storage configuration

RELEASE_NOTES.md

@@ -0,0 +1,108 @@
+# v3.42.1 Release Notes
+
+## What's New in v3.42.1
+
+### Deduplication - Resistance is Futile
+
+Content-defined chunking deduplication for space-efficient backups. Like restic/borgbackup but with **native database dump support**.
+
+```bash
+# First backup: 5MB stored
+dbbackup dedup backup mydb.dump
+
+# Second backup (modified): only 1.6KB new data stored!
+# 100% deduplication ratio
+dbbackup dedup backup mydb_modified.dump
+```
+
+#### Features
+- **Gear Hash CDC** - Content-defined chunking with 92%+ overlap on shifted data
+- **SHA-256 Content-Addressed** - Chunks stored by hash, automatic deduplication
+- **AES-256-GCM Encryption** - Optional per-chunk encryption
+- **Gzip Compression** - Optional compression (enabled by default)
+- **SQLite Index** - Fast chunk lookups and statistics
+
+#### Commands
+```bash
+dbbackup dedup backup <file>              # Create deduplicated backup
+dbbackup dedup backup <file> --encrypt    # With AES-256-GCM encryption
+dbbackup dedup restore <id> <output>      # Restore from manifest
+dbbackup dedup list                       # List all backups
+dbbackup dedup stats                      # Show deduplication statistics
+dbbackup dedup delete <id>                # Delete a backup
+dbbackup dedup gc                         # Garbage collect unreferenced chunks
+```
+
+#### Storage Structure
+```
+<backup-dir>/dedup/
+  chunks/           # Content-addressed chunk files
+    ab/cdef1234...  # Sharded by first 2 chars of hash
+  manifests/        # JSON manifest per backup
+  chunks.db         # SQLite index
+```
+
+### Also Included (from v3.41.x)
+- **Systemd Integration** - One-command install with `dbbackup install`
+- **Prometheus Metrics** - HTTP exporter on port 9399
+- **Backup Catalog** - SQLite-based tracking of all backup operations
+- **Prometheus Alerting Rules** - Added to SYSTEMD.md documentation
+
+### Installation
+
+#### Quick Install (Recommended)
+```bash
+# Download for your platform
+curl -LO https://git.uuxo.net/UUXO/dbbackup/releases/download/v3.42.1/dbbackup-linux-amd64
+
+# Install with systemd service
+chmod +x dbbackup-linux-amd64
+sudo ./dbbackup-linux-amd64 install --config /path/to/config.yaml
+```
+
+#### Available Binaries
+| Platform | Architecture | Binary |
+|----------|--------------|--------|
+| Linux | amd64 | `dbbackup-linux-amd64` |
+| Linux | arm64 | `dbbackup-linux-arm64` |
+| macOS | Intel | `dbbackup-darwin-amd64` |
+| macOS | Apple Silicon | `dbbackup-darwin-arm64` |
+| FreeBSD | amd64 | `dbbackup-freebsd-amd64` |
+
+### Systemd Commands
+```bash
+dbbackup install --config config.yaml   # Install service + timer
+dbbackup install --status               # Check service status
+dbbackup install --uninstall            # Remove services
+```
+
+### Prometheus Metrics
+Available at `http://localhost:9399/metrics`:
+
+| Metric | Description |
+|--------|-------------|
+| `dbbackup_last_backup_timestamp` | Unix timestamp of last backup |
+| `dbbackup_last_backup_success` | 1 if successful, 0 if failed |
+| `dbbackup_last_backup_duration_seconds` | Duration of last backup |
+| `dbbackup_last_backup_size_bytes` | Size of last backup |
+| `dbbackup_backup_total` | Total number of backups |
+| `dbbackup_backup_errors_total` | Total number of failed backups |
+
+### Security Features
+- Hardened systemd service with `ProtectSystem=strict`
+- `NoNewPrivileges=true` prevents privilege escalation
+- Dedicated `dbbackup` system user (optional)
+- Credential files with restricted permissions
+
+### Documentation
+- [SYSTEMD.md](SYSTEMD.md) - Complete systemd installation guide
+- [README.md](README.md) - Full documentation
+- [CHANGELOG.md](CHANGELOG.md) - Version history
+
+### Bug Fixes
+- Fixed SQLite time parsing in dedup stats
+- Fixed function name collision in cmd package
+
+---
+
+**Full Changelog**: https://git.uuxo.net/UUXO/dbbackup/compare/v3.41.1...v3.42.1

RESTORE_PROFILES.md

@@ -0,0 +1,195 @@
+# Restore Profiles
+
+## Overview
+
+The `--profile` flag allows you to optimize restore operations based on your server's resources and current workload. This is particularly useful when dealing with "out of shared memory" errors or resource-constrained environments.
+
+## Available Profiles
+
+### Conservative Profile (`--profile=conservative`)
+**Best for:** Resource-constrained servers, production systems with other running services, or when dealing with "out of shared memory" errors.
+
+**Settings:**
+- Single-threaded restore (`--parallel=1`)
+- Single-threaded decompression (`--jobs=1`)
+- Memory-conservative mode enabled
+- Minimal memory footprint
+
+**When to use:**
+- Server RAM usage > 70%
+- Other critical services running (web servers, monitoring agents)
+- "out of shared memory" errors during restore
+- Small VMs or shared hosting environments
+- Disk I/O is the bottleneck
+
+**Example:**
+```bash
+dbbackup restore cluster backup.tar.gz --profile=conservative --confirm
+```
+
+### Balanced Profile (`--profile=balanced`) - DEFAULT
+**Best for:** Most scenarios, general-purpose servers with adequate resources.
+
+**Settings:**
+- Auto-detect parallelism based on CPU/RAM
+- Moderate resource usage
+- Good balance between speed and stability
+
+**When to use:**
+- Default choice for most restores
+- Dedicated database server with moderate load
+- Unknown or variable server conditions
+
+**Example:**
+```bash
+dbbackup restore cluster backup.tar.gz --confirm
+# or explicitly:
+dbbackup restore cluster backup.tar.gz --profile=balanced --confirm
+```
+
+### Aggressive Profile (`--profile=aggressive`)
+**Best for:** Dedicated database servers with ample resources, maintenance windows, performance-critical restores.
+
+**Settings:**
+- Maximum parallelism (auto-detect based on CPU cores)
+- Maximum resource utilization
+- Fastest restore speed
+
+**When to use:**
+- Dedicated database server (no other services)
+- Server RAM usage < 50%
+- Time-critical restores (RTO minimization)
+- Maintenance windows with service downtime
+- Testing/development environments
+
+**Example:**
+```bash
+dbbackup restore cluster backup.tar.gz --profile=aggressive --confirm
+```
+
+### Potato Profile (`--profile=potato`) 🥔
+**Easter egg:** Same as conservative, for servers running on a potato.
+
+## Profile Comparison
+
+| Setting | Conservative | Balanced | Aggressive |
+|---------|-------------|----------|-----------|
+| Parallel DBs | 1 (sequential) | Auto (2-4) | Auto (all CPUs) |
+| Jobs (decompression) | 1 | Auto (2-4) | Auto (all CPUs) |
+| Memory Usage | Minimal | Moderate | Maximum |
+| Speed | Slowest | Medium | Fastest |
+| Stability | Most stable | Stable | Requires resources |
+
+## Overriding Profile Settings
+
+You can override specific profile settings:
+
+```bash
+# Use conservative profile but allow 2 parallel jobs for decompression
+dbbackup restore cluster backup.tar.gz \\
+  --profile=conservative \\
+  --jobs=2 \\
+  --confirm
+
+# Use aggressive profile but limit to 2 parallel databases
+dbbackup restore cluster backup.tar.gz \\
+  --profile=aggressive \\
+  --parallel-dbs=2 \\
+  --confirm
+```
+
+## Real-World Scenarios
+
+### Scenario 1: "Out of Shared Memory" Error
+**Problem:** PostgreSQL restore fails with `ERROR: out of shared memory`
+
+**Solution:**
+```bash
+# Step 1: Use conservative profile
+dbbackup restore cluster backup.tar.gz --profile=conservative --confirm
+
+# Step 2: If still failing, temporarily stop monitoring agents
+sudo systemctl stop nessus-agent elastic-agent
+dbbackup restore cluster backup.tar.gz --profile=conservative --confirm
+sudo systemctl start nessus-agent elastic-agent
+
+# Step 3: Ask infrastructure team to increase work_mem (see email_infra_team.txt)
+```
+
+### Scenario 2: Fast Disaster Recovery
+**Goal:** Restore as quickly as possible during maintenance window
+
+**Solution:**
+```bash
+# Stop all non-essential services first
+sudo systemctl stop nginx php-fpm
+dbbackup restore cluster backup.tar.gz --profile=aggressive --confirm
+sudo systemctl start nginx php-fpm
+```
+
+### Scenario 3: Shared Server with Multiple Services
+**Environment:** Web server + database + monitoring all on same VM
+
+**Solution:**
+```bash
+# Always use conservative to avoid impacting other services
+dbbackup restore cluster backup.tar.gz --profile=conservative --confirm
+```
+
+### Scenario 4: Unknown Server Conditions
+**Situation:** Restoring to a new server, unsure of resources
+
+**Solution:**
+```bash
+# Step 1: Run diagnostics first
+./diagnose_postgres_memory.sh > diagnosis.log
+
+# Step 2: Choose profile based on memory usage:
+# - If memory > 80%: use conservative
+# - If memory 50-80%: use balanced (default)
+# - If memory < 50%: use aggressive
+
+# Step 3: Start with balanced and adjust if needed
+dbbackup restore cluster backup.tar.gz --confirm
+```
+
+## Troubleshooting
+
+### Profile Selection Guide
+
+**Use Conservative when:**
+- ✅ Memory usage > 70%
+- ✅ Other services running
+- ✅ Getting "out of shared memory" errors
+- ✅ Restore keeps failing
+- ✅ Small VM (< 4 GB RAM)
+- ✅ High swap usage
+
+**Use Balanced when:**
+- ✅ Normal operation
+- ✅ Moderate server load
+- ✅ Unsure what to use
+- ✅ Medium VM (4-16 GB RAM)
+
+**Use Aggressive when:**
+- ✅ Dedicated database server
+- ✅ Memory usage < 50%
+- ✅ No other critical services
+- ✅ Need fastest possible restore
+- ✅ Large VM (> 16 GB RAM)
+- ✅ Maintenance window
+
+## Environment Variables
+
+You can set a default profile:
+
+```bash
+export RESOURCE_PROFILE=conservative
+dbbackup restore cluster backup.tar.gz --confirm
+```
+
+## See Also
+
+- [diagnose_postgres_memory.sh](diagnose_postgres_memory.sh) - Analyze system resources before restore
+- [fix_postgres_locks.sh](fix_postgres_locks.sh) - Fix PostgreSQL lock exhaustion
+- [email_infra_team.txt](email_infra_team.txt) - Template email for infrastructure team

RESTORE_PROGRESS_PROPOSAL.md

@@ -0,0 +1,171 @@
+# Restore Progress Bar Enhancement Proposal
+
+## Problem
+During Phase 2 cluster restore, the progress bar is not real-time because:
+- `pg_restore` subprocess blocks until completion
+- Progress updates only happen **before** each database restore starts
+- No feedback during actual restore execution (which can take hours)
+- Users see frozen progress bar during large database restores
+
+## Root Cause
+In `internal/restore/engine.go`:
+- `executeRestoreCommand()` blocks on `cmd.Wait()` 
+- Progress is only reported at goroutine entry (line ~1315)
+- No streaming progress during pg_restore execution
+
+## Proposed Solutions
+
+### Option 1: Parse pg_restore stderr for progress (RECOMMENDED)
+**Pros:**
+- Real-time feedback during restore
+- Works with existing pg_restore
+- No external tools needed
+
+**Implementation:**
+```go
+// In executeRestoreCommand, modify stderr reader:
+go func() {
+    scanner := bufio.NewScanner(stderr)
+    for scanner.Scan() {
+        line := scanner.Text()
+        
+        // Parse pg_restore progress lines
+        // Format: "pg_restore: processing item 1234 TABLE public users"
+        if strings.Contains(line, "processing item") {
+            e.reportItemProgress(line) // Update progress bar
+        }
+        
+        // Capture errors
+        if strings.Contains(line, "ERROR:") {
+            lastError = line
+            errorCount++
+        }
+    }
+}()
+```
+
+**Add to RestoreCluster goroutine:**
+```go
+// Track sub-items within each database
+var currentDBItems, totalDBItems int
+e.setItemProgressCallback(func(current, total int) {
+    currentDBItems = current
+    totalDBItems = total
+    // Update TUI with sub-progress
+    e.reportDatabaseSubProgress(idx, totalDBs, dbName, current, total)
+})
+```
+
+### Option 2: Verbose mode with line counting
+**Pros:**
+- More granular progress (row-level)
+- Shows exact operation being performed
+
+**Cons:**
+- `--verbose` causes massive stderr output (OOM risk on huge DBs)
+- Currently disabled for memory safety
+- Requires careful memory management
+
+### Option 3: Hybrid approach (BEST)
+**Combine both:**
+1. **Default**: Parse non-verbose pg_restore output for item counts
+2. **Small DBs** (<500MB): Enable verbose for detailed progress
+3. **Periodic updates**: Report progress every 5 seconds even without stderr changes
+
+**Implementation:**
+```go
+// Add periodic progress ticker
+progressTicker := time.NewTicker(5 * time.Second)
+defer progressTicker.Stop()
+
+go func() {
+    for {
+        select {
+        case <-progressTicker.C:
+            // Report heartbeat even if no stderr
+            e.reportHeartbeat(dbName, time.Since(dbRestoreStart))
+        case <-stderrDone:
+            return
+        }
+    }
+}()
+```
+
+## Recommended Implementation Plan
+
+### Phase 1: Quick Win (1-2 hours)
+1. Add heartbeat ticker in cluster restore goroutines
+2. Update TUI to show "Restoring database X... (elapsed: 3m 45s)"
+3. No code changes to pg_restore wrapper
+
+### Phase 2: Parse pg_restore Output (4-6 hours)
+1. Parse stderr for "processing item" lines
+2. Extract current/total item counts
+3. Report sub-progress to TUI
+4. Update progress bar calculation: 
+   ```
+   dbProgress = baseProgress + (itemsDone/totalItems) * dbWeightedPercent
+   ```
+
+### Phase 3: Smart Verbose Mode (optional)
+1. Detect database size before restore
+2. Enable verbose for DBs < 500MB
+3. Parse verbose output for detailed progress
+4. Automatic fallback to item-based for large DBs
+
+## Files to Modify
+
+1. **internal/restore/engine.go**:
+   - `executeRestoreCommand()` - add progress parsing
+   - `RestoreCluster()` - add heartbeat ticker
+   - New: `reportItemProgress()`, `reportHeartbeat()`
+
+2. **internal/tui/restore_exec.go**:
+   - Update `RestoreExecModel` to handle sub-progress
+   - Add "elapsed time" display during restore
+   - Show item counts: "Restoring tables... (234/567)"
+
+3. **internal/progress/indicator.go**:
+   - Add `UpdateSubProgress(current, total int)` method
+   - Add `ReportHeartbeat(elapsed time.Duration)` method
+
+## Example Output
+
+**Before (current):**
+```
+[====================] Phase 2/3: Restoring Databases (1/5)
+Restoring database myapp...
+[frozen for 30 minutes]
+```
+
+**After (with heartbeat):**
+```
+[====================] Phase 2/3: Restoring Databases (1/5)
+Restoring database myapp... (elapsed: 4m 32s)
+[updates every 5 seconds]
+```
+
+**After (with item parsing):**
+```
+[=========>-----------] Phase 2/3: Restoring Databases (1/5)
+Restoring database myapp... (processing item 1,234/5,678) (elapsed: 4m 32s)
+[smooth progress bar movement]
+```
+
+## Testing Strategy
+1. Test with small DB (< 100MB) - verify heartbeat works
+2. Test with large DB (> 10GB) - verify no OOM, heartbeat works
+3. Test with BLOB-heavy DB - verify phased restore shows progress
+4. Test parallel cluster restore - verify multiple heartbeats don't conflict
+
+## Risk Assessment
+- **Low risk**: Heartbeat ticker (Phase 1)
+- **Medium risk**: stderr parsing (Phase 2) - test thoroughly
+- **High risk**: Verbose mode (Phase 3) - can cause OOM
+
+## Estimated Implementation Time
+- Phase 1 (heartbeat): 1-2 hours
+- Phase 2 (item parsing): 4-6 hours
+- Phase 3 (smart verbose): 8-10 hours (optional)
+
+**Total for Phases 1+2: 5-8 hours**

SYSTEMD.md

@@ -116,8 +116,9 @@ sudo chmod 755 /usr/local/bin/dbbackup
 ### Step 2: Create Configuration
 
 ```bash
-# Main configuration
-sudo tee /etc/dbbackup/dbbackup.conf << 'EOF'
+# Main configuration in working directory (where service runs from)
+# dbbackup reads .dbbackup.conf from WorkingDirectory
+sudo tee /var/lib/dbbackup/.dbbackup.conf << 'EOF'
 # DBBackup Configuration
 db-type=postgres
 host=localhost
@@ -128,6 +129,8 @@ compression=6
 retention-days=30
 min-backups=7
 EOF
+sudo chown dbbackup:dbbackup /var/lib/dbbackup/.dbbackup.conf
+sudo chmod 600 /var/lib/dbbackup/.dbbackup.conf
 
 # Instance credentials (secure permissions)
 sudo tee /etc/dbbackup/env.d/cluster.conf << 'EOF'
@@ -157,13 +160,15 @@ Group=dbbackup
 # Load configuration
 EnvironmentFile=-/etc/dbbackup/env.d/cluster.conf
 
-# Working directory
+# Working directory (config is loaded from .dbbackup.conf here)
 WorkingDirectory=/var/lib/dbbackup
 
-# Execute backup
+# Execute backup (reads .dbbackup.conf from WorkingDirectory)
 ExecStart=/usr/local/bin/dbbackup backup cluster \
-    --config /etc/dbbackup/dbbackup.conf \
     --backup-dir /var/lib/dbbackup/backups \
+    --host localhost \
+    --port 5432 \
+    --user postgres \
     --allow-root
 
 # Security hardening
@@ -443,12 +448,12 @@ sudo systemctl status dbbackup-cluster.service
 # View detailed error
 sudo journalctl -u dbbackup-cluster.service -n 50 --no-pager
 
-# Test manually as dbbackup user
-sudo -u dbbackup /usr/local/bin/dbbackup backup cluster --config /etc/dbbackup/dbbackup.conf
+# Test manually as dbbackup user (run from working directory with .dbbackup.conf)
+cd /var/lib/dbbackup && sudo -u dbbackup /usr/local/bin/dbbackup backup cluster
 
 # Check permissions
 ls -la /var/lib/dbbackup/
-ls -la /etc/dbbackup/
+ls -la /var/lib/dbbackup/.dbbackup.conf
 ```
 
 ### Permission Denied
@@ -481,6 +486,93 @@ sudo ufw status
 sudo iptables -L -n | grep 9399
 ```
 
+## Prometheus Alerting Rules
+
+Add these alert rules to your Prometheus configuration for backup monitoring:
+
+```yaml
+# /etc/prometheus/rules/dbbackup.yml
+groups:
+  - name: dbbackup
+    rules:
+      # Alert if no successful backup in 24 hours
+      - alert: DBBackupMissing
+        expr: time() - dbbackup_last_success_timestamp > 86400
+        for: 5m
+        labels:
+          severity: warning
+        annotations:
+          summary: "No backup in 24 hours on {{ $labels.instance }}"
+          description: "Database {{ $labels.database }} has not had a successful backup in over 24 hours."
+
+      # Alert if backup verification failed
+      - alert: DBBackupVerificationFailed
+        expr: dbbackup_backup_verified == 0
+        for: 5m
+        labels:
+          severity: critical
+        annotations:
+          summary: "Backup verification failed on {{ $labels.instance }}"
+          description: "Last backup for {{ $labels.database }} failed verification check."
+
+      # Alert if RPO exceeded (48 hours)
+      - alert: DBBackupRPOExceeded
+        expr: dbbackup_rpo_seconds > 172800
+        for: 5m
+        labels:
+          severity: critical
+        annotations:
+          summary: "RPO exceeded on {{ $labels.instance }}"
+          description: "Recovery Point Objective exceeded 48 hours for {{ $labels.database }}."
+
+      # Alert if exporter is down
+      - alert: DBBackupExporterDown
+        expr: up{job="dbbackup"} == 0
+        for: 5m
+        labels:
+          severity: warning
+        annotations:
+          summary: "DBBackup exporter down on {{ $labels.instance }}"
+          description: "Cannot scrape metrics from dbbackup-exporter."
+
+      # Alert if backup size dropped significantly (possible truncation)
+      - alert: DBBackupSizeAnomaly
+        expr: dbbackup_last_backup_size_bytes < (dbbackup_last_backup_size_bytes offset 1d) * 0.5
+        for: 5m
+        labels:
+          severity: warning
+        annotations:
+          summary: "Backup size anomaly on {{ $labels.instance }}"
+          description: "Backup size for {{ $labels.database }} dropped by more than 50%."
+```
+
+### Loading Alert Rules
+
+```bash
+# Test rules syntax
+promtool check rules /etc/prometheus/rules/dbbackup.yml
+
+# Reload Prometheus
+sudo systemctl reload prometheus
+# or via API:
+curl -X POST http://localhost:9090/-/reload
+```
+
+## Catalog Sync for Existing Backups
+
+If you have existing backups created before installing v3.41+, sync them to the catalog:
+
+```bash
+# Sync existing backups to catalog
+dbbackup catalog sync /path/to/backup/directory --allow-root
+
+# Verify catalog contents
+dbbackup catalog list --allow-root
+
+# Show statistics
+dbbackup catalog stats --allow-root
+```
+
 ## Uninstallation
 
 ### Using Installer

VEEAM_ALTERNATIVE.md

@@ -1,133 +0,0 @@
-# Why DBAs Are Switching from Veeam to dbbackup
-
-## The Enterprise Backup Problem
-
-You're paying **$2,000-10,000/year per database server** for enterprise backup solutions. 
-
-What are you actually getting?
-
-- Heavy agents eating your CPU
-- Complex licensing that requires a spreadsheet to understand
-- Vendor lock-in to proprietary formats
-- "Cloud support" that means "we'll upload your backup somewhere"
-- Recovery that requires calling support
-
-## What If There Was a Better Way?
-
-**dbbackup v3.2.0** delivers enterprise-grade MySQL/MariaDB backup capabilities in a **single, zero-dependency binary**:
-
-| Feature | Veeam/Commercial | dbbackup |
-|---------|------------------|----------|
-| Physical backups | ✅ Via XtraBackup | ✅ Native Clone Plugin |
-| Consistent snapshots | ✅ | ✅ LVM/ZFS/Btrfs |
-| Binlog streaming | ❌ | ✅ Continuous PITR |
-| Direct cloud streaming | ❌ (stage to disk) | ✅ Zero local storage |
-| Parallel uploads | ❌ | ✅ Configurable workers |
-| License cost | $$$$ | **Free (MIT)** |
-| Dependencies | Agent + XtraBackup + ... | **Single binary** |
-
-## Real Numbers
-
-**100GB database backup comparison:**
-
-| Metric | Traditional | dbbackup v3.2 |
-|--------|-------------|---------------|
-| Backup time | 45 min | **12 min** |
-| Local disk needed | 100GB | **0 GB** |
-| Network efficiency | 1x | **3x** (parallel) |
-| Recovery point | Daily | **< 1 second** |
-
-## The Technical Revolution
-
-### MySQL Clone Plugin (8.0.17+)
-```bash
-# Physical backup at InnoDB page level
-# No XtraBackup. No external tools. Pure Go.
-dbbackup backup single mydb --db-type mysql --cloud s3://bucket/backups/
-```
-
-### Filesystem Snapshots
-```bash
-# Brief lock (<100ms), instant snapshot, stream to cloud
-dbbackup backup --engine=snapshot --snapshot-backend=lvm
-```
-
-### Continuous Binlog Streaming
-```bash
-# Real-time binlog capture to S3
-# Sub-second RPO without touching the database server
-dbbackup binlog stream --target=s3://bucket/binlogs/
-```
-
-### Parallel Cloud Upload
-```bash
-# Saturate your network, not your patience
-dbbackup backup --engine=streaming --parallel-workers=8
-```
-
-## Who Should Switch?
-
-✅ **Cloud-native deployments** - Kubernetes, ECS, Cloud Run  
-✅ **Cost-conscious enterprises** - Same capabilities, zero license fees  
-✅ **DevOps teams** - Single binary, easy automation  
-✅ **Compliance requirements** - AES-256-GCM encryption, audit logging  
-✅ **Multi-cloud strategies** - S3, GCS, Azure Blob native support  
-
-## Migration Path
-
-**Day 1**: Run dbbackup alongside existing solution
-```bash
-# Test backup
-dbbackup backup single mydb --cloud s3://test-bucket/
-
-# Verify integrity
-dbbackup verify s3://test-bucket/mydb_20260115.dump.gz
-```
-
-**Week 1**: Compare backup times, storage costs, recovery speed
-
-**Week 2**: Switch primary backups to dbbackup
-
-**Month 1**: Cancel Veeam renewal, buy your team pizza with savings 🍕
-
-## FAQ
-
-**Q: Is this production-ready?**  
-A: Used in production by organizations managing petabytes of MySQL data.
-
-**Q: What about support?**  
-A: Community support via GitHub. Enterprise support available.
-
-**Q: Can it replace XtraBackup?**  
-A: For MySQL 8.0.17+, yes. We use native Clone Plugin instead.
-
-**Q: What about PostgreSQL?**  
-A: Full PostgreSQL support including WAL archiving and PITR.
-
-## Get Started
-
-```bash
-# Download (single binary, ~15MB)
-curl -LO https://github.com/UUXO/dbbackup/releases/latest/download/dbbackup_linux_amd64
-chmod +x dbbackup_linux_amd64
-
-# Your first backup
-./dbbackup_linux_amd64 backup single production \
-  --db-type mysql \
-  --cloud s3://my-backups/
-```
-
-## The Bottom Line
-
-Every dollar you spend on backup licensing is a dollar not spent on:
-- Better hardware
-- Your team
-- Actually useful tools
-
-**dbbackup**: Enterprise capabilities. Zero enterprise pricing.
-
----
-
-*Apache 2.0 Licensed. Free forever. No sales calls required.*
-
-[GitHub](https://github.com/UUXO/dbbackup) | [Documentation](https://github.com/UUXO/dbbackup#readme) | [Changelog](CHANGELOG.md)

bin/README.md

@@ -1,22 +1,11 @@
 # DB Backup Tool - Pre-compiled Binaries
 
-## Download
-
-**Binaries are distributed via GitHub Releases:**
-
-📦 **https://github.com/PlusOne/dbbackup/releases**
-
-Or build from source:
-```bash
-git clone https://github.com/PlusOne/dbbackup.git
-cd dbbackup
-./build_all.sh
-```
+This directory contains pre-compiled binaries for the DB Backup Tool across multiple platforms and architectures.
 
 ## Build Information
-- **Version**: 3.40.0
-- **Build Time**: 2026-01-07_10:55:47_UTC
-- **Git Commit**: 495ee31
+- **Version**: 3.42.81
+- **Build Time**: 2026-01-22_17:13:41_UTC
+- **Git Commit**: 6a7cf3c
 
 ## Recent Updates (v1.1.0)
 - ✅ Fixed TUI progress display with line-by-line output

build_all.sh

@@ -15,7 +15,7 @@ echo "🔧 Using Go version: $GO_VERSION"
 
 # Configuration
 APP_NAME="dbbackup"
-VERSION="3.40.0"
+VERSION=$(grep 'version.*=' main.go | head -1 | sed 's/.*"\(.*\)".*/\1/')
 BUILD_TIME=$(date -u '+%Y-%m-%d_%H:%M:%S_UTC')
 GIT_COMMIT=$(git rev-parse --short HEAD 2>/dev/null || echo "unknown")
 BIN_DIR="bin"

cmd/catalog.go

@@ -252,8 +252,8 @@ func runCatalogSync(cmd *cobra.Command, args []string) error {
 	}
 	defer cat.Close()
 
-	fmt.Printf("📁 Syncing backups from: %s\n", absDir)
-	fmt.Printf("📊 Catalog database: %s\n\n", catalogDBPath)
+	fmt.Printf("[DIR] Syncing backups from: %s\n", absDir)
+	fmt.Printf("[STATS] Catalog database: %s\n\n", catalogDBPath)
 
 	ctx := context.Background()
 	result, err := cat.SyncFromDirectory(ctx, absDir)
@@ -265,17 +265,17 @@ func runCatalogSync(cmd *cobra.Command, args []string) error {
 	cat.SetLastSync(ctx)
 
 	// Show results
-	fmt.Printf("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n")
+	fmt.Printf("=====================================================\n")
 	fmt.Printf("  Sync Results\n")
-	fmt.Printf("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n")
-	fmt.Printf("  ✅ Added:   %d\n", result.Added)
-	fmt.Printf("  🔄 Updated: %d\n", result.Updated)
-	fmt.Printf("  🗑️  Removed: %d\n", result.Removed)
+	fmt.Printf("=====================================================\n")
+	fmt.Printf("  [OK] Added:   %d\n", result.Added)
+	fmt.Printf("  [SYNC] Updated: %d\n", result.Updated)
+	fmt.Printf("  [DEL]  Removed: %d\n", result.Removed)
 	if result.Errors > 0 {
-		fmt.Printf("  ❌ Errors:  %d\n", result.Errors)
+		fmt.Printf("  [FAIL] Errors:  %d\n", result.Errors)
 	}
-	fmt.Printf("  ⏱️  Duration: %.2fs\n", result.Duration)
-	fmt.Printf("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n")
+	fmt.Printf("  [TIME]  Duration: %.2fs\n", result.Duration)
+	fmt.Printf("=====================================================\n")
 
 	// Show details if verbose
 	if catalogVerbose && len(result.Details) > 0 {
@@ -323,7 +323,7 @@ func runCatalogList(cmd *cobra.Command, args []string) error {
 	// Table format
 	fmt.Printf("%-30s %-12s %-10s %-20s %-10s %s\n",
 		"DATABASE", "TYPE", "SIZE", "CREATED", "STATUS", "PATH")
-	fmt.Println(strings.Repeat("─", 120))
+	fmt.Println(strings.Repeat("-", 120))
 
 	for _, entry := range entries {
 		dbName := truncateString(entry.Database, 28)
@@ -331,10 +331,10 @@ func runCatalogList(cmd *cobra.Command, args []string) error {
 
 		status := string(entry.Status)
 		if entry.VerifyValid != nil && *entry.VerifyValid {
-			status = "✓ verified"
+			status = "[OK] verified"
 		}
 		if entry.DrillSuccess != nil && *entry.DrillSuccess {
-			status = "✓ tested"
+			status = "[OK] tested"
 		}
 
 		fmt.Printf("%-30s %-12s %-10s %-20s %-10s %s\n",
@@ -377,20 +377,20 @@ func runCatalogStats(cmd *cobra.Command, args []string) error {
 	}
 
 	// Table format
-	fmt.Printf("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n")
+	fmt.Printf("=====================================================\n")
 	if catalogDatabase != "" {
 		fmt.Printf("  Catalog Statistics: %s\n", catalogDatabase)
 	} else {
 		fmt.Printf("  Catalog Statistics\n")
 	}
-	fmt.Printf("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n\n")
+	fmt.Printf("=====================================================\n\n")
 
-	fmt.Printf("📊 Total Backups:    %d\n", stats.TotalBackups)
-	fmt.Printf("💾 Total Size:       %s\n", stats.TotalSizeHuman)
-	fmt.Printf("📏 Average Size:     %s\n", catalog.FormatSize(stats.AvgSize))
-	fmt.Printf("⏱️  Average Duration: %.1fs\n", stats.AvgDuration)
-	fmt.Printf("✅ Verified:         %d\n", stats.VerifiedCount)
-	fmt.Printf("🧪 Drill Tested:     %d\n", stats.DrillTestedCount)
+	fmt.Printf("[STATS] Total Backups:    %d\n", stats.TotalBackups)
+	fmt.Printf("[SAVE] Total Size:       %s\n", stats.TotalSizeHuman)
+	fmt.Printf("[SIZE] Average Size:     %s\n", catalog.FormatSize(stats.AvgSize))
+	fmt.Printf("[TIME]  Average Duration: %.1fs\n", stats.AvgDuration)
+	fmt.Printf("[OK] Verified:         %d\n", stats.VerifiedCount)
+	fmt.Printf("[TEST] Drill Tested:     %d\n", stats.DrillTestedCount)
 
 	if stats.OldestBackup != nil {
 		fmt.Printf("📅 Oldest Backup:    %s\n", stats.OldestBackup.Format("2006-01-02 15:04"))
@@ -400,27 +400,27 @@ func runCatalogStats(cmd *cobra.Command, args []string) error {
 	}
 
 	if len(stats.ByDatabase) > 0 && catalogDatabase == "" {
-		fmt.Printf("\n📁 By Database:\n")
+		fmt.Printf("\n[DIR] By Database:\n")
 		for db, count := range stats.ByDatabase {
 			fmt.Printf("   %-30s %d\n", db, count)
 		}
 	}
 
 	if len(stats.ByType) > 0 {
-		fmt.Printf("\n📦 By Type:\n")
+		fmt.Printf("\n[PKG] By Type:\n")
 		for t, count := range stats.ByType {
 			fmt.Printf("   %-15s %d\n", t, count)
 		}
 	}
 
 	if len(stats.ByStatus) > 0 {
-		fmt.Printf("\n📋 By Status:\n")
+		fmt.Printf("\n[LOG] By Status:\n")
 		for s, count := range stats.ByStatus {
 			fmt.Printf("   %-15s %d\n", s, count)
 		}
 	}
 
-	fmt.Printf("\n━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n")
+	fmt.Printf("\n=====================================================\n")
 	return nil
 }
 
@@ -488,26 +488,26 @@ func runCatalogGaps(cmd *cobra.Command, args []string) error {
 	}
 
 	if len(allGaps) == 0 {
-		fmt.Printf("✅ No backup gaps detected (expected interval: %s)\n", interval)
+		fmt.Printf("[OK] No backup gaps detected (expected interval: %s)\n", interval)
 		return nil
 	}
 
-	fmt.Printf("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n")
+	fmt.Printf("=====================================================\n")
 	fmt.Printf("  Backup Gaps Detected (expected interval: %s)\n", interval)
-	fmt.Printf("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n\n")
+	fmt.Printf("=====================================================\n\n")
 
 	totalGaps := 0
 	criticalGaps := 0
 
 	for database, gaps := range allGaps {
-		fmt.Printf("📁 %s (%d gaps)\n", database, len(gaps))
+		fmt.Printf("[DIR] %s (%d gaps)\n", database, len(gaps))
 
 		for _, gap := range gaps {
 			totalGaps++
-			icon := "ℹ️"
+			icon := "[INFO]"
 			switch gap.Severity {
 			case catalog.SeverityWarning:
-				icon = "⚠️"
+				icon = "[WARN]"
 			case catalog.SeverityCritical:
 				icon = "🚨"
 				criticalGaps++
@@ -523,7 +523,7 @@ func runCatalogGaps(cmd *cobra.Command, args []string) error {
 		fmt.Println()
 	}
 
-	fmt.Printf("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n")
+	fmt.Printf("=====================================================\n")
 	fmt.Printf("Total: %d gaps detected", totalGaps)
 	if criticalGaps > 0 {
 		fmt.Printf(" (%d critical)", criticalGaps)
@@ -598,20 +598,20 @@ func runCatalogSearch(cmd *cobra.Command, args []string) error {
 	fmt.Printf("Found %d matching backups:\n\n", len(entries))
 
 	for _, entry := range entries {
-		fmt.Printf("📁 %s\n", entry.Database)
+		fmt.Printf("[DIR] %s\n", entry.Database)
 		fmt.Printf("   Path: %s\n", entry.BackupPath)
 		fmt.Printf("   Type: %s | Size: %s | Created: %s\n",
 			entry.DatabaseType,
 			catalog.FormatSize(entry.SizeBytes),
 			entry.CreatedAt.Format("2006-01-02 15:04:05"))
 		if entry.Encrypted {
-			fmt.Printf("   🔒 Encrypted\n")
+			fmt.Printf("   [LOCK] Encrypted\n")
 		}
 		if entry.VerifyValid != nil && *entry.VerifyValid {
-			fmt.Printf("   ✅ Verified: %s\n", entry.VerifiedAt.Format("2006-01-02 15:04"))
+			fmt.Printf("   [OK] Verified: %s\n", entry.VerifiedAt.Format("2006-01-02 15:04"))
 		}
 		if entry.DrillSuccess != nil && *entry.DrillSuccess {
-			fmt.Printf("   🧪 Drill Tested: %s\n", entry.DrillTestedAt.Format("2006-01-02 15:04"))
+			fmt.Printf("   [TEST] Drill Tested: %s\n", entry.DrillTestedAt.Format("2006-01-02 15:04"))
 		}
 		fmt.Println()
 	}
@@ -655,64 +655,64 @@ func runCatalogInfo(cmd *cobra.Command, args []string) error {
 		return nil
 	}
 
-	fmt.Printf("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n")
+	fmt.Printf("=====================================================\n")
 	fmt.Printf("  Backup Details\n")
-	fmt.Printf("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n\n")
+	fmt.Printf("=====================================================\n\n")
 
-	fmt.Printf("📁 Database:     %s\n", entry.Database)
+	fmt.Printf("[DIR] Database:     %s\n", entry.Database)
 	fmt.Printf("🔧 Type:         %s\n", entry.DatabaseType)
-	fmt.Printf("🖥️  Host:         %s:%d\n", entry.Host, entry.Port)
+	fmt.Printf("[HOST]  Host:         %s:%d\n", entry.Host, entry.Port)
 	fmt.Printf("📂 Path:         %s\n", entry.BackupPath)
-	fmt.Printf("📦 Backup Type:  %s\n", entry.BackupType)
-	fmt.Printf("💾 Size:         %s (%d bytes)\n", catalog.FormatSize(entry.SizeBytes), entry.SizeBytes)
-	fmt.Printf("🔐 SHA256:       %s\n", entry.SHA256)
+	fmt.Printf("[PKG] Backup Type:  %s\n", entry.BackupType)
+	fmt.Printf("[SAVE] Size:         %s (%d bytes)\n", catalog.FormatSize(entry.SizeBytes), entry.SizeBytes)
+	fmt.Printf("[HASH] SHA256:       %s\n", entry.SHA256)
 	fmt.Printf("📅 Created:      %s\n", entry.CreatedAt.Format("2006-01-02 15:04:05 MST"))
-	fmt.Printf("⏱️  Duration:     %.2fs\n", entry.Duration)
-	fmt.Printf("📋 Status:       %s\n", entry.Status)
+	fmt.Printf("[TIME]  Duration:     %.2fs\n", entry.Duration)
+	fmt.Printf("[LOG] Status:       %s\n", entry.Status)
 
 	if entry.Compression != "" {
-		fmt.Printf("📦 Compression:  %s\n", entry.Compression)
+		fmt.Printf("[PKG] Compression:  %s\n", entry.Compression)
 	}
 	if entry.Encrypted {
-		fmt.Printf("🔒 Encrypted:    yes\n")
+		fmt.Printf("[LOCK] Encrypted:    yes\n")
 	}
 	if entry.CloudLocation != "" {
-		fmt.Printf("☁️  Cloud:        %s\n", entry.CloudLocation)
+		fmt.Printf("[CLOUD]  Cloud:        %s\n", entry.CloudLocation)
 	}
 	if entry.RetentionPolicy != "" {
 		fmt.Printf("📆 Retention:    %s\n", entry.RetentionPolicy)
 	}
 
-	fmt.Printf("\n📊 Verification:\n")
+	fmt.Printf("\n[STATS] Verification:\n")
 	if entry.VerifiedAt != nil {
-		status := "❌ Failed"
+		status := "[FAIL] Failed"
 		if entry.VerifyValid != nil && *entry.VerifyValid {
-			status = "✅ Valid"
+			status = "[OK] Valid"
 		}
 		fmt.Printf("   Status: %s (checked %s)\n", status, entry.VerifiedAt.Format("2006-01-02 15:04"))
 	} else {
-		fmt.Printf("   Status: ⏳ Not verified\n")
+		fmt.Printf("   Status: [WAIT] Not verified\n")
 	}
 
-	fmt.Printf("\n🧪 DR Drill Test:\n")
+	fmt.Printf("\n[TEST] DR Drill Test:\n")
 	if entry.DrillTestedAt != nil {
-		status := "❌ Failed"
+		status := "[FAIL] Failed"
 		if entry.DrillSuccess != nil && *entry.DrillSuccess {
-			status = "✅ Passed"
+			status = "[OK] Passed"
 		}
 		fmt.Printf("   Status: %s (tested %s)\n", status, entry.DrillTestedAt.Format("2006-01-02 15:04"))
 	} else {
-		fmt.Printf("   Status: ⏳ Not tested\n")
+		fmt.Printf("   Status: [WAIT] Not tested\n")
 	}
 
 	if len(entry.Metadata) > 0 {
-		fmt.Printf("\n📝 Additional Metadata:\n")
+		fmt.Printf("\n[NOTE] Additional Metadata:\n")
 		for k, v := range entry.Metadata {
 			fmt.Printf("   %s: %s\n", k, v)
 		}
 	}
 
-	fmt.Printf("\n━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n")
+	fmt.Printf("\n=====================================================\n")
 
 	return nil
 }

cmd/cleanup.go

@@ -115,7 +115,7 @@ func runCleanup(cmd *cobra.Command, args []string) error {
 		DryRun:        dryRun,
 	}
 
-	fmt.Printf("🗑️  Cleanup Policy:\n")
+	fmt.Printf("[CLEANUP] Cleanup Policy:\n")
 	fmt.Printf("   Directory: %s\n", backupDir)
 	fmt.Printf("   Retention: %d days\n", policy.RetentionDays)
 	fmt.Printf("   Min backups: %d\n", policy.MinBackups)
@@ -142,16 +142,16 @@ func runCleanup(cmd *cobra.Command, args []string) error {
 	}
 
 	// Display results
-	fmt.Printf("📊 Results:\n")
+	fmt.Printf("[RESULTS] Results:\n")
 	fmt.Printf("   Total backups: %d\n", result.TotalBackups)
 	fmt.Printf("   Eligible for deletion: %d\n", result.EligibleForDeletion)
 
 	if len(result.Deleted) > 0 {
 		fmt.Printf("\n")
 		if dryRun {
-			fmt.Printf("🔍 Would delete %d backup(s):\n", len(result.Deleted))
+			fmt.Printf("[DRY-RUN] Would delete %d backup(s):\n", len(result.Deleted))
 		} else {
-			fmt.Printf("✅ Deleted %d backup(s):\n", len(result.Deleted))
+			fmt.Printf("[OK] Deleted %d backup(s):\n", len(result.Deleted))
 		}
 		for _, file := range result.Deleted {
 			fmt.Printf("   - %s\n", filepath.Base(file))
@@ -159,33 +159,33 @@ func runCleanup(cmd *cobra.Command, args []string) error {
 	}
 
 	if len(result.Kept) > 0 && len(result.Kept) <= 10 {
-		fmt.Printf("\n📦 Kept %d backup(s):\n", len(result.Kept))
+		fmt.Printf("\n[KEPT] Kept %d backup(s):\n", len(result.Kept))
 		for _, file := range result.Kept {
 			fmt.Printf("   - %s\n", filepath.Base(file))
 		}
 	} else if len(result.Kept) > 10 {
-		fmt.Printf("\n📦 Kept %d backup(s)\n", len(result.Kept))
+		fmt.Printf("\n[KEPT] Kept %d backup(s)\n", len(result.Kept))
 	}
 
 	if !dryRun && result.SpaceFreed > 0 {
-		fmt.Printf("\n💾 Space freed: %s\n", metadata.FormatSize(result.SpaceFreed))
+		fmt.Printf("\n[FREED] Space freed: %s\n", metadata.FormatSize(result.SpaceFreed))
 	}
 
 	if len(result.Errors) > 0 {
-		fmt.Printf("\n⚠️  Errors:\n")
+		fmt.Printf("\n[WARN] Errors:\n")
 		for _, err := range result.Errors {
 			fmt.Printf("   - %v\n", err)
 		}
 	}
 
-	fmt.Println(strings.Repeat("─", 50))
+	fmt.Println(strings.Repeat("-", 50))
 
 	if dryRun {
-		fmt.Println("✅ Dry run completed (no files were deleted)")
+		fmt.Println("[OK] Dry run completed (no files were deleted)")
 	} else if len(result.Deleted) > 0 {
-		fmt.Println("✅ Cleanup completed successfully")
+		fmt.Println("[OK] Cleanup completed successfully")
 	} else {
-		fmt.Println("ℹ️  No backups eligible for deletion")
+		fmt.Println("[INFO] No backups eligible for deletion")
 	}
 
 	return nil
@@ -212,7 +212,7 @@ func runCloudCleanup(ctx context.Context, uri string) error {
 		return fmt.Errorf("invalid cloud URI: %w", err)
 	}
 
-	fmt.Printf("☁️  Cloud Cleanup Policy:\n")
+	fmt.Printf("[CLOUD] Cloud Cleanup Policy:\n")
 	fmt.Printf("   URI: %s\n", uri)
 	fmt.Printf("   Provider: %s\n", cloudURI.Provider)
 	fmt.Printf("   Bucket: %s\n", cloudURI.Bucket)
@@ -295,7 +295,7 @@ func runCloudCleanup(ctx context.Context, uri string) error {
 	}
 
 	// Display results
-	fmt.Printf("📊 Results:\n")
+	fmt.Printf("[RESULTS] Results:\n")
 	fmt.Printf("   Total backups: %d\n", totalBackups)
 	fmt.Printf("   Eligible for deletion: %d\n", len(toDelete))
 	fmt.Printf("   Will keep: %d\n", len(toKeep))
@@ -303,9 +303,9 @@ func runCloudCleanup(ctx context.Context, uri string) error {
 
 	if len(toDelete) > 0 {
 		if dryRun {
-			fmt.Printf("🔍 Would delete %d backup(s):\n", len(toDelete))
+			fmt.Printf("[DRY-RUN] Would delete %d backup(s):\n", len(toDelete))
 		} else {
-			fmt.Printf("🗑️  Deleting %d backup(s):\n", len(toDelete))
+			fmt.Printf("[DELETE] Deleting %d backup(s):\n", len(toDelete))
 		}
 
 		var totalSize int64
@@ -321,7 +321,7 @@ func runCloudCleanup(ctx context.Context, uri string) error {
 
 			if !dryRun {
 				if err := backend.Delete(ctx, backup.Key); err != nil {
-					fmt.Printf("     ❌ Error: %v\n", err)
+					fmt.Printf("     [FAIL] Error: %v\n", err)
 				} else {
 					deletedCount++
 					// Also try to delete metadata
@@ -330,12 +330,12 @@ func runCloudCleanup(ctx context.Context, uri string) error {
 			}
 		}
 
-		fmt.Printf("\n💾 Space %s: %s\n",
+		fmt.Printf("\n[FREED] Space %s: %s\n",
 			map[bool]string{true: "would be freed", false: "freed"}[dryRun],
 			cloud.FormatSize(totalSize))
 
 		if !dryRun && deletedCount > 0 {
-			fmt.Printf("✅ Successfully deleted %d backup(s)\n", deletedCount)
+			fmt.Printf("[OK] Successfully deleted %d backup(s)\n", deletedCount)
 		}
 	} else {
 		fmt.Println("No backups eligible for deletion")
@@ -405,7 +405,7 @@ func runGFSCleanup(backupDir string) error {
 	}
 
 	// Display tier breakdown
-	fmt.Printf("📊 Backup Classification:\n")
+	fmt.Printf("[STATS] Backup Classification:\n")
 	fmt.Printf("   Yearly:  %d\n", result.YearlyKept)
 	fmt.Printf("   Monthly: %d\n", result.MonthlyKept)
 	fmt.Printf("   Weekly:  %d\n", result.WeeklyKept)
@@ -416,9 +416,9 @@ func runGFSCleanup(backupDir string) error {
 	// Display deletions
 	if len(result.Deleted) > 0 {
 		if dryRun {
-			fmt.Printf("🔍 Would delete %d backup(s):\n", len(result.Deleted))
+			fmt.Printf("[SEARCH] Would delete %d backup(s):\n", len(result.Deleted))
 		} else {
-			fmt.Printf("✅ Deleted %d backup(s):\n", len(result.Deleted))
+			fmt.Printf("[OK] Deleted %d backup(s):\n", len(result.Deleted))
 		}
 		for _, file := range result.Deleted {
 			fmt.Printf("   - %s\n", filepath.Base(file))
@@ -427,7 +427,7 @@ func runGFSCleanup(backupDir string) error {
 
 	// Display kept backups (limited display)
 	if len(result.Kept) > 0 && len(result.Kept) <= 15 {
-		fmt.Printf("\n📦 Kept %d backup(s):\n", len(result.Kept))
+		fmt.Printf("\n[PKG] Kept %d backup(s):\n", len(result.Kept))
 		for _, file := range result.Kept {
 			// Show tier classification
 			info, _ := os.Stat(file)
@@ -440,28 +440,28 @@ func runGFSCleanup(backupDir string) error {
 			}
 		}
 	} else if len(result.Kept) > 15 {
-		fmt.Printf("\n📦 Kept %d backup(s)\n", len(result.Kept))
+		fmt.Printf("\n[PKG] Kept %d backup(s)\n", len(result.Kept))
 	}
 
 	if !dryRun && result.SpaceFreed > 0 {
-		fmt.Printf("\n💾 Space freed: %s\n", metadata.FormatSize(result.SpaceFreed))
+		fmt.Printf("\n[SAVE] Space freed: %s\n", metadata.FormatSize(result.SpaceFreed))
 	}
 
 	if len(result.Errors) > 0 {
-		fmt.Printf("\n⚠️  Errors:\n")
+		fmt.Printf("\n[WARN]  Errors:\n")
 		for _, err := range result.Errors {
 			fmt.Printf("   - %v\n", err)
 		}
 	}
 
-	fmt.Println(strings.Repeat("─", 50))
+	fmt.Println(strings.Repeat("-", 50))
 
 	if dryRun {
-		fmt.Println("✅ GFS dry run completed (no files were deleted)")
+		fmt.Println("[OK] GFS dry run completed (no files were deleted)")
 	} else if len(result.Deleted) > 0 {
-		fmt.Println("✅ GFS cleanup completed successfully")
+		fmt.Println("[OK] GFS cleanup completed successfully")
 	} else {
-		fmt.Println("ℹ️  No backups eligible for deletion under GFS policy")
+		fmt.Println("[INFO]  No backups eligible for deletion under GFS policy")
 	}
 
 	return nil

cmd/cloud.go

@@ -189,12 +189,12 @@ func runCloudUpload(cmd *cobra.Command, args []string) error {
 		}
 	}
 
-	fmt.Printf("☁️  Uploading %d file(s) to %s...\n\n", len(files), backend.Name())
+	fmt.Printf("[CLOUD] Uploading %d file(s) to %s...\n\n", len(files), backend.Name())
 
 	successCount := 0
 	for _, localPath := range files {
 		filename := filepath.Base(localPath)
-		fmt.Printf("📤 %s\n", filename)
+		fmt.Printf("[UPLOAD] %s\n", filename)
 
 		// Progress callback
 		var lastPercent int
@@ -214,21 +214,21 @@ func runCloudUpload(cmd *cobra.Command, args []string) error {
 
 		err := backend.Upload(ctx, localPath, filename, progress)
 		if err != nil {
-			fmt.Printf("   ❌ Failed: %v\n\n", err)
+			fmt.Printf("   [FAIL] Failed: %v\n\n", err)
 			continue
 		}
 
 		// Get file size
 		if info, err := os.Stat(localPath); err == nil {
-			fmt.Printf("   ✅ Uploaded (%s)\n\n", cloud.FormatSize(info.Size()))
+			fmt.Printf("   [OK] Uploaded (%s)\n\n", cloud.FormatSize(info.Size()))
 		} else {
-			fmt.Printf("   ✅ Uploaded\n\n")
+			fmt.Printf("   [OK] Uploaded\n\n")
 		}
 		successCount++
 	}
 
-	fmt.Println(strings.Repeat("─", 50))
-	fmt.Printf("✅ Successfully uploaded %d/%d file(s)\n", successCount, len(files))
+	fmt.Println(strings.Repeat("-", 50))
+	fmt.Printf("[OK] Successfully uploaded %d/%d file(s)\n", successCount, len(files))
 
 	return nil
 }
@@ -248,8 +248,8 @@ func runCloudDownload(cmd *cobra.Command, args []string) error {
 		localPath = filepath.Join(localPath, filepath.Base(remotePath))
 	}
 
-	fmt.Printf("☁️  Downloading from %s...\n\n", backend.Name())
-	fmt.Printf("📥 %s → %s\n", remotePath, localPath)
+	fmt.Printf("[CLOUD] Downloading from %s...\n\n", backend.Name())
+	fmt.Printf("[DOWNLOAD] %s -> %s\n", remotePath, localPath)
 
 	// Progress callback
 	var lastPercent int
@@ -274,9 +274,9 @@ func runCloudDownload(cmd *cobra.Command, args []string) error {
 
 	// Get file size
 	if info, err := os.Stat(localPath); err == nil {
-		fmt.Printf("   ✅ Downloaded (%s)\n", cloud.FormatSize(info.Size()))
+		fmt.Printf("   [OK] Downloaded (%s)\n", cloud.FormatSize(info.Size()))
 	} else {
-		fmt.Printf("   ✅ Downloaded\n")
+		fmt.Printf("   [OK] Downloaded\n")
 	}
 
 	return nil
@@ -294,7 +294,7 @@ func runCloudList(cmd *cobra.Command, args []string) error {
 		prefix = args[0]
 	}
 
-	fmt.Printf("☁️  Listing backups in %s/%s...\n\n", backend.Name(), cloudBucket)
+	fmt.Printf("[CLOUD] Listing backups in %s/%s...\n\n", backend.Name(), cloudBucket)
 
 	backups, err := backend.List(ctx, prefix)
 	if err != nil {
@@ -311,7 +311,7 @@ func runCloudList(cmd *cobra.Command, args []string) error {
 		totalSize += backup.Size
 
 		if cloudVerbose {
-			fmt.Printf("📦 %s\n", backup.Name)
+			fmt.Printf("[FILE] %s\n", backup.Name)
 			fmt.Printf("   Size: %s\n", cloud.FormatSize(backup.Size))
 			fmt.Printf("   Modified: %s\n", backup.LastModified.Format(time.RFC3339))
 			if backup.StorageClass != "" {
@@ -328,7 +328,7 @@ func runCloudList(cmd *cobra.Command, args []string) error {
 		}
 	}
 
-	fmt.Println(strings.Repeat("─", 50))
+	fmt.Println(strings.Repeat("-", 50))
 	fmt.Printf("Total: %d backup(s), %s\n", len(backups), cloud.FormatSize(totalSize))
 
 	return nil
@@ -360,7 +360,7 @@ func runCloudDelete(cmd *cobra.Command, args []string) error {
 
 	// Confirmation prompt
 	if !cloudConfirm {
-		fmt.Printf("⚠️  Delete %s (%s) from cloud storage?\n", remotePath, cloud.FormatSize(size))
+		fmt.Printf("[WARN] Delete %s (%s) from cloud storage?\n", remotePath, cloud.FormatSize(size))
 		fmt.Print("Type 'yes' to confirm: ")
 		var response string
 		fmt.Scanln(&response)
@@ -370,14 +370,14 @@ func runCloudDelete(cmd *cobra.Command, args []string) error {
 		}
 	}
 
-	fmt.Printf("🗑️  Deleting %s...\n", remotePath)
+	fmt.Printf("[DELETE] Deleting %s...\n", remotePath)
 
 	err = backend.Delete(ctx, remotePath)
 	if err != nil {
 		return fmt.Errorf("delete failed: %w", err)
 	}
 
-	fmt.Printf("✅ Deleted %s (%s)\n", remotePath, cloud.FormatSize(size))
+	fmt.Printf("[OK] Deleted %s (%s)\n", remotePath, cloud.FormatSize(size))
 
 	return nil
 }

cmd/cpu.go

@@ -61,10 +61,10 @@ func runCPUInfo(ctx context.Context) error {
 
 	// Show current vs optimal
 	if cfg.AutoDetectCores {
-		fmt.Println("\n✅ CPU optimization is enabled")
+		fmt.Println("\n[OK] CPU optimization is enabled")
 		fmt.Println("Job counts are automatically optimized based on detected hardware")
 	} else {
-		fmt.Println("\n⚠️  CPU optimization is disabled")
+		fmt.Println("\n[WARN] CPU optimization is disabled")
 		fmt.Println("Consider enabling --auto-detect-cores for better performance")
 	}
 

cmd/dedup.go

@@ -0,0 +1,1284 @@
+package cmd
+
+import (
+	"compress/gzip"
+	"crypto/sha256"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"time"
+
+	"dbbackup/internal/dedup"
+
+	"github.com/spf13/cobra"
+)
+
+var dedupCmd = &cobra.Command{
+	Use:   "dedup",
+	Short: "Deduplicated backup operations",
+	Long: `Content-defined chunking deduplication for space-efficient backups.
+
+Similar to restic/borgbackup but with native database dump support.
+
+Features:
+- Content-defined chunking (CDC) with Buzhash rolling hash
+- SHA-256 content-addressed storage
+- AES-256-GCM encryption (optional)
+- Gzip compression (optional)
+- SQLite index for fast lookups
+
+Storage Structure:
+  <dedup-dir>/
+    chunks/       # Content-addressed chunk files
+      ab/cdef...  # Sharded by first 2 chars of hash
+    manifests/    # JSON manifest per backup
+    chunks.db     # SQLite index
+
+NFS/CIFS NOTICE:
+  SQLite may have locking issues on network storage.
+  Use --index-db to put the SQLite index on local storage while keeping
+  chunks on network storage:
+  
+    dbbackup dedup backup mydb.sql \
+      --dedup-dir /mnt/nfs/backups/dedup \
+      --index-db /var/lib/dbbackup/dedup-index.db
+
+  This avoids "database is locked" errors while still storing chunks remotely.
+
+COMPRESSED INPUT NOTICE:
+  Pre-compressed files (.gz) have poor deduplication ratios (<10%).
+  Use --decompress-input to decompress before chunking for better results:
+  
+    dbbackup dedup backup mydb.sql.gz --decompress-input`,
+}
+
+var dedupBackupCmd = &cobra.Command{
+	Use:   "backup <file>",
+	Short: "Create a deduplicated backup of a file",
+	Long: `Chunk a file using content-defined chunking and store deduplicated chunks.
+
+Example:
+  dbbackup dedup backup /path/to/database.dump
+  dbbackup dedup backup mydb.sql --compress --encrypt`,
+	Args: cobra.ExactArgs(1),
+	RunE: runDedupBackup,
+}
+
+var dedupRestoreCmd = &cobra.Command{
+	Use:   "restore <manifest-id> <output-file>",
+	Short: "Restore a backup from its manifest",
+	Long: `Reconstruct a file from its deduplicated chunks.
+
+Example:
+  dbbackup dedup restore 2026-01-07_120000_mydb /tmp/restored.dump
+  dbbackup dedup list  # to see available manifests`,
+	Args: cobra.ExactArgs(2),
+	RunE: runDedupRestore,
+}
+
+var dedupListCmd = &cobra.Command{
+	Use:   "list",
+	Short: "List all deduplicated backups",
+	RunE:  runDedupList,
+}
+
+var dedupStatsCmd = &cobra.Command{
+	Use:   "stats",
+	Short: "Show deduplication statistics",
+	RunE:  runDedupStats,
+}
+
+var dedupGCCmd = &cobra.Command{
+	Use:   "gc",
+	Short: "Garbage collect unreferenced chunks",
+	Long: `Remove chunks that are no longer referenced by any manifest.
+
+Run after deleting old backups to reclaim space.`,
+	RunE: runDedupGC,
+}
+
+var dedupDeleteCmd = &cobra.Command{
+	Use:   "delete <manifest-id>",
+	Short: "Delete a backup manifest (chunks cleaned by gc)",
+	Args:  cobra.ExactArgs(1),
+	RunE:  runDedupDelete,
+}
+
+var dedupVerifyCmd = &cobra.Command{
+	Use:   "verify [manifest-id]",
+	Short: "Verify chunk integrity against manifests",
+	Long: `Verify that all chunks referenced by manifests exist and have correct hashes.
+
+Without arguments, verifies all backups. With a manifest ID, verifies only that backup.
+
+Examples:
+  dbbackup dedup verify                    # Verify all backups
+  dbbackup dedup verify 2026-01-07_mydb    # Verify specific backup`,
+	RunE: runDedupVerify,
+}
+
+var dedupPruneCmd = &cobra.Command{
+	Use:   "prune",
+	Short: "Apply retention policy to manifests",
+	Long: `Delete old manifests based on retention policy (like borg prune).
+
+Keeps a specified number of recent backups per database and deletes the rest.
+
+Examples:
+  dbbackup dedup prune --keep-last 7                    # Keep 7 most recent
+  dbbackup dedup prune --keep-daily 7 --keep-weekly 4   # Keep 7 daily + 4 weekly`,
+	RunE: runDedupPrune,
+}
+
+var dedupBackupDBCmd = &cobra.Command{
+	Use:   "backup-db",
+	Short: "Direct database dump with deduplication",
+	Long: `Dump a database directly into deduplicated chunks without temp files.
+
+Streams the database dump through the chunker for efficient deduplication.
+
+Examples:
+  dbbackup dedup backup-db --db-type postgres --db-name mydb
+  dbbackup dedup backup-db -d mariadb --database production_db --host db.local`,
+	RunE: runDedupBackupDB,
+}
+
+// Prune flags
+var (
+	pruneKeepLast   int
+	pruneKeepDaily  int
+	pruneKeepWeekly int
+	pruneDryRun     bool
+)
+
+// backup-db flags
+var (
+	backupDBDatabase string
+	backupDBUser     string
+	backupDBPassword string
+)
+
+// metrics flags
+var (
+	dedupMetricsOutput   string
+	dedupMetricsInstance string
+)
+
+var dedupMetricsCmd = &cobra.Command{
+	Use:   "metrics",
+	Short: "Export dedup statistics as Prometheus metrics",
+	Long: `Export deduplication statistics in Prometheus format.
+
+Can write to a textfile for node_exporter's textfile collector,
+or print to stdout for custom integrations.
+
+Examples:
+  dbbackup dedup metrics                                    # Print to stdout
+  dbbackup dedup metrics --output /var/lib/node_exporter/textfile_collector/dedup.prom
+  dbbackup dedup metrics --instance prod-db-1`,
+	RunE: runDedupMetrics,
+}
+
+// Flags
+var (
+	dedupDir        string
+	dedupIndexDB    string // Separate path for SQLite index (for NFS/CIFS support)
+	dedupCompress   bool
+	dedupEncrypt    bool
+	dedupKey        string
+	dedupName       string
+	dedupDBType     string
+	dedupDBName     string
+	dedupDBHost     string
+	dedupDecompress bool // Auto-decompress gzip input
+)
+
+func init() {
+	rootCmd.AddCommand(dedupCmd)
+	dedupCmd.AddCommand(dedupBackupCmd)
+	dedupCmd.AddCommand(dedupRestoreCmd)
+	dedupCmd.AddCommand(dedupListCmd)
+	dedupCmd.AddCommand(dedupStatsCmd)
+	dedupCmd.AddCommand(dedupGCCmd)
+	dedupCmd.AddCommand(dedupDeleteCmd)
+	dedupCmd.AddCommand(dedupVerifyCmd)
+	dedupCmd.AddCommand(dedupPruneCmd)
+	dedupCmd.AddCommand(dedupBackupDBCmd)
+	dedupCmd.AddCommand(dedupMetricsCmd)
+
+	// Global dedup flags
+	dedupCmd.PersistentFlags().StringVar(&dedupDir, "dedup-dir", "", "Dedup storage directory (default: $BACKUP_DIR/dedup)")
+	dedupCmd.PersistentFlags().StringVar(&dedupIndexDB, "index-db", "", "SQLite index path (local recommended for NFS/CIFS chunk dirs)")
+	dedupCmd.PersistentFlags().BoolVar(&dedupCompress, "compress", true, "Compress chunks with gzip")
+	dedupCmd.PersistentFlags().BoolVar(&dedupEncrypt, "encrypt", false, "Encrypt chunks with AES-256-GCM")
+	dedupCmd.PersistentFlags().StringVar(&dedupKey, "key", "", "Encryption key (hex) or use DBBACKUP_DEDUP_KEY env")
+
+	// Backup-specific flags
+	dedupBackupCmd.Flags().StringVar(&dedupName, "name", "", "Optional backup name")
+	dedupBackupCmd.Flags().StringVar(&dedupDBType, "db-type", "", "Database type (postgres/mysql)")
+	dedupBackupCmd.Flags().StringVar(&dedupDBName, "db-name", "", "Database name")
+	dedupBackupCmd.Flags().StringVar(&dedupDBHost, "db-host", "", "Database host")
+	dedupBackupCmd.Flags().BoolVar(&dedupDecompress, "decompress-input", false, "Auto-decompress gzip input before chunking (improves dedup ratio)")
+
+	// Prune flags
+	dedupPruneCmd.Flags().IntVar(&pruneKeepLast, "keep-last", 0, "Keep the last N backups")
+	dedupPruneCmd.Flags().IntVar(&pruneKeepDaily, "keep-daily", 0, "Keep N daily backups")
+	dedupPruneCmd.Flags().IntVar(&pruneKeepWeekly, "keep-weekly", 0, "Keep N weekly backups")
+	dedupPruneCmd.Flags().BoolVar(&pruneDryRun, "dry-run", false, "Show what would be deleted without actually deleting")
+
+	// backup-db flags
+	dedupBackupDBCmd.Flags().StringVarP(&dedupDBType, "db-type", "d", "", "Database type (postgres/mariadb/mysql)")
+	dedupBackupDBCmd.Flags().StringVar(&backupDBDatabase, "database", "", "Database name to backup")
+	dedupBackupDBCmd.Flags().StringVar(&dedupDBHost, "host", "localhost", "Database host")
+	dedupBackupDBCmd.Flags().StringVarP(&backupDBUser, "user", "u", "", "Database user")
+	dedupBackupDBCmd.Flags().StringVarP(&backupDBPassword, "password", "p", "", "Database password (or use env)")
+	dedupBackupDBCmd.MarkFlagRequired("db-type")
+	dedupBackupDBCmd.MarkFlagRequired("database")
+
+	// Metrics flags
+	dedupMetricsCmd.Flags().StringVarP(&dedupMetricsOutput, "output", "o", "", "Output file path (default: stdout)")
+	dedupMetricsCmd.Flags().StringVar(&dedupMetricsInstance, "instance", "", "Instance label for metrics (default: hostname)")
+}
+
+func getDedupDir() string {
+	if dedupDir != "" {
+		return dedupDir
+	}
+	if cfg != nil && cfg.BackupDir != "" {
+		return filepath.Join(cfg.BackupDir, "dedup")
+	}
+	return filepath.Join(os.Getenv("HOME"), "db_backups", "dedup")
+}
+
+func getIndexDBPath() string {
+	if dedupIndexDB != "" {
+		return dedupIndexDB
+	}
+	// Default: same directory as chunks (may have issues on NFS/CIFS)
+	return filepath.Join(getDedupDir(), "chunks.db")
+}
+
+func getEncryptionKey() string {
+	if dedupKey != "" {
+		return dedupKey
+	}
+	return os.Getenv("DBBACKUP_DEDUP_KEY")
+}
+
+func runDedupBackup(cmd *cobra.Command, args []string) error {
+	inputPath := args[0]
+
+	// Open input file
+	file, err := os.Open(inputPath)
+	if err != nil {
+		return fmt.Errorf("failed to open input file: %w", err)
+	}
+	defer file.Close()
+
+	info, err := file.Stat()
+	if err != nil {
+		return fmt.Errorf("failed to stat input file: %w", err)
+	}
+
+	// Check for compressed input and warn/handle
+	var reader io.Reader = file
+	isGzipped := strings.HasSuffix(strings.ToLower(inputPath), ".gz")
+	if isGzipped && !dedupDecompress {
+		fmt.Printf("Warning: Input appears to be gzip compressed (.gz)\n")
+		fmt.Printf("  Compressed data typically has poor dedup ratios (<10%%).\n")
+		fmt.Printf("  Consider using --decompress-input for better deduplication.\n\n")
+	}
+
+	if isGzipped && dedupDecompress {
+		fmt.Printf("Auto-decompressing gzip input for better dedup ratio...\n")
+		gzReader, err := gzip.NewReader(file)
+		if err != nil {
+			return fmt.Errorf("failed to decompress gzip input: %w", err)
+		}
+		defer gzReader.Close()
+		reader = gzReader
+	}
+
+	// Setup dedup storage
+	basePath := getDedupDir()
+	encKey := ""
+	if dedupEncrypt {
+		encKey = getEncryptionKey()
+		if encKey == "" {
+			return fmt.Errorf("encryption enabled but no key provided (use --key or DBBACKUP_DEDUP_KEY)")
+		}
+	}
+
+	store, err := dedup.NewChunkStore(dedup.StoreConfig{
+		BasePath:      basePath,
+		Compress:      dedupCompress,
+		EncryptionKey: encKey,
+	})
+	if err != nil {
+		return fmt.Errorf("failed to open chunk store: %w", err)
+	}
+
+	manifestStore, err := dedup.NewManifestStore(basePath)
+	if err != nil {
+		return fmt.Errorf("failed to open manifest store: %w", err)
+	}
+
+	index, err := dedup.NewChunkIndexAt(getIndexDBPath())
+	if err != nil {
+		return fmt.Errorf("failed to open chunk index: %w", err)
+	}
+	defer index.Close()
+
+	// Generate manifest ID
+	now := time.Now()
+	manifestID := now.Format("2006-01-02_150405")
+	if dedupDBName != "" {
+		manifestID += "_" + dedupDBName
+	} else {
+		base := filepath.Base(inputPath)
+		ext := filepath.Ext(base)
+		// Remove .gz extension if decompressing
+		if isGzipped && dedupDecompress {
+			base = strings.TrimSuffix(base, ext)
+			ext = filepath.Ext(base)
+		}
+		manifestID += "_" + strings.TrimSuffix(base, ext)
+	}
+
+	fmt.Printf("Creating deduplicated backup: %s\n", manifestID)
+	fmt.Printf("Input: %s (%s)\n", inputPath, formatBytes(info.Size()))
+	if isGzipped && dedupDecompress {
+		fmt.Printf("Mode: Decompressing before chunking\n")
+	}
+	fmt.Printf("Store: %s\n", basePath)
+	if dedupIndexDB != "" {
+		fmt.Printf("Index: %s\n", getIndexDBPath())
+	}
+
+	// For decompressed input, we can't seek - use TeeReader to hash while chunking
+	h := sha256.New()
+	var chunkReader io.Reader
+
+	if isGzipped && dedupDecompress {
+		// Can't seek on gzip stream - hash will be computed inline
+		chunkReader = io.TeeReader(reader, h)
+	} else {
+		// Regular file - hash first, then reset and chunk
+		file.Seek(0, 0)
+		io.Copy(h, file)
+		file.Seek(0, 0)
+		chunkReader = file
+		h = sha256.New() // Reset for inline hashing
+		chunkReader = io.TeeReader(file, h)
+	}
+
+	// Chunk the file
+	chunker := dedup.NewChunker(chunkReader, dedup.DefaultChunkerConfig())
+	var chunks []dedup.ChunkRef
+	var totalSize, storedSize int64
+	var chunkCount, newChunks int
+
+	startTime := time.Now()
+
+	for {
+		chunk, err := chunker.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return fmt.Errorf("chunking failed: %w", err)
+		}
+
+		chunkCount++
+		totalSize += int64(chunk.Length)
+
+		// Store chunk (deduplication happens here)
+		isNew, err := store.Put(chunk)
+		if err != nil {
+			return fmt.Errorf("failed to store chunk: %w", err)
+		}
+
+		if isNew {
+			newChunks++
+			storedSize += int64(chunk.Length)
+			// Record in index
+			index.AddChunk(chunk.Hash, chunk.Length, chunk.Length)
+		}
+
+		chunks = append(chunks, dedup.ChunkRef{
+			Hash:   chunk.Hash,
+			Offset: chunk.Offset,
+			Length: chunk.Length,
+		})
+
+		// Progress
+		if chunkCount%1000 == 0 {
+			fmt.Printf("\r  Processed %d chunks, %d new...", chunkCount, newChunks)
+		}
+	}
+
+	duration := time.Since(startTime)
+
+	// Get final hash (computed inline via TeeReader)
+	fileHash := hex.EncodeToString(h.Sum(nil))
+
+	// Calculate dedup ratio
+	dedupRatio := 0.0
+	if totalSize > 0 {
+		dedupRatio = 1.0 - float64(storedSize)/float64(totalSize)
+	}
+
+	// Create manifest
+	manifest := &dedup.Manifest{
+		ID:           manifestID,
+		Name:         dedupName,
+		CreatedAt:    now,
+		DatabaseType: dedupDBType,
+		DatabaseName: dedupDBName,
+		DatabaseHost: dedupDBHost,
+		Chunks:       chunks,
+		OriginalSize: totalSize,
+		StoredSize:   storedSize,
+		ChunkCount:   chunkCount,
+		NewChunks:    newChunks,
+		DedupRatio:   dedupRatio,
+		Encrypted:    dedupEncrypt,
+		Compressed:   dedupCompress,
+		SHA256:       fileHash,
+		Decompressed: isGzipped && dedupDecompress, // Track if we decompressed
+	}
+
+	if err := manifestStore.Save(manifest); err != nil {
+		return fmt.Errorf("failed to save manifest: %w", err)
+	}
+
+	if err := index.AddManifest(manifest); err != nil {
+		log.Warn("Failed to index manifest", "error", err)
+	}
+
+	fmt.Printf("\r                                        \r")
+	fmt.Printf("\nBackup complete!\n")
+	fmt.Printf("  Manifest:    %s\n", manifestID)
+	fmt.Printf("  Chunks:      %d total, %d new\n", chunkCount, newChunks)
+	fmt.Printf("  Original:    %s\n", formatBytes(totalSize))
+	fmt.Printf("  Stored:      %s (new data)\n", formatBytes(storedSize))
+	fmt.Printf("  Dedup ratio: %.1f%%\n", dedupRatio*100)
+	fmt.Printf("  Duration:    %s\n", duration.Round(time.Millisecond))
+	fmt.Printf("  Throughput:  %s/s\n", formatBytes(int64(float64(totalSize)/duration.Seconds())))
+
+	return nil
+}
+
+func runDedupRestore(cmd *cobra.Command, args []string) error {
+	manifestID := args[0]
+	outputPath := args[1]
+
+	basePath := getDedupDir()
+	encKey := ""
+	if dedupEncrypt {
+		encKey = getEncryptionKey()
+	}
+
+	store, err := dedup.NewChunkStore(dedup.StoreConfig{
+		BasePath:      basePath,
+		Compress:      dedupCompress,
+		EncryptionKey: encKey,
+	})
+	if err != nil {
+		return fmt.Errorf("failed to open chunk store: %w", err)
+	}
+
+	manifestStore, err := dedup.NewManifestStore(basePath)
+	if err != nil {
+		return fmt.Errorf("failed to open manifest store: %w", err)
+	}
+
+	manifest, err := manifestStore.Load(manifestID)
+	if err != nil {
+		return fmt.Errorf("failed to load manifest: %w", err)
+	}
+
+	fmt.Printf("Restoring backup: %s\n", manifestID)
+	fmt.Printf("  Created:  %s\n", manifest.CreatedAt.Format(time.RFC3339))
+	fmt.Printf("  Size:     %s\n", formatBytes(manifest.OriginalSize))
+	fmt.Printf("  Chunks:   %d\n", manifest.ChunkCount)
+
+	// Create output file
+	outFile, err := os.Create(outputPath)
+	if err != nil {
+		return fmt.Errorf("failed to create output file: %w", err)
+	}
+	defer outFile.Close()
+
+	h := sha256.New()
+	writer := io.MultiWriter(outFile, h)
+
+	startTime := time.Now()
+
+	for i, ref := range manifest.Chunks {
+		chunk, err := store.Get(ref.Hash)
+		if err != nil {
+			return fmt.Errorf("failed to read chunk %d (%s): %w", i, ref.Hash[:8], err)
+		}
+
+		if _, err := writer.Write(chunk.Data); err != nil {
+			return fmt.Errorf("failed to write chunk %d: %w", i, err)
+		}
+
+		if (i+1)%1000 == 0 {
+			fmt.Printf("\r  Restored %d/%d chunks...", i+1, manifest.ChunkCount)
+		}
+	}
+
+	duration := time.Since(startTime)
+	restoredHash := hex.EncodeToString(h.Sum(nil))
+
+	fmt.Printf("\r                                        \r")
+	fmt.Printf("\nRestore complete!\n")
+	fmt.Printf("  Output:      %s\n", outputPath)
+	fmt.Printf("  Duration:    %s\n", duration.Round(time.Millisecond))
+
+	// Verify hash
+	if manifest.SHA256 != "" {
+		if restoredHash == manifest.SHA256 {
+			fmt.Printf("  Verification: [OK] SHA-256 matches\n")
+		} else {
+			fmt.Printf("  Verification: [FAIL] SHA-256 MISMATCH!\n")
+			fmt.Printf("    Expected: %s\n", manifest.SHA256)
+			fmt.Printf("    Got:      %s\n", restoredHash)
+			return fmt.Errorf("integrity verification failed")
+		}
+	}
+
+	return nil
+}
+
+func runDedupList(cmd *cobra.Command, args []string) error {
+	basePath := getDedupDir()
+
+	manifestStore, err := dedup.NewManifestStore(basePath)
+	if err != nil {
+		return fmt.Errorf("failed to open manifest store: %w", err)
+	}
+
+	manifests, err := manifestStore.ListAll()
+	if err != nil {
+		return fmt.Errorf("failed to list manifests: %w", err)
+	}
+
+	if len(manifests) == 0 {
+		fmt.Println("No deduplicated backups found.")
+		fmt.Printf("Store: %s\n", basePath)
+		return nil
+	}
+
+	fmt.Printf("Deduplicated Backups (%s)\n\n", basePath)
+	fmt.Printf("%-30s %-12s %-10s %-10s %s\n", "ID", "SIZE", "DEDUP", "CHUNKS", "CREATED")
+	fmt.Println(strings.Repeat("-", 80))
+
+	for _, m := range manifests {
+		fmt.Printf("%-30s %-12s %-10.1f%% %-10d %s\n",
+			truncateStr(m.ID, 30),
+			formatBytes(m.OriginalSize),
+			m.DedupRatio*100,
+			m.ChunkCount,
+			m.CreatedAt.Format("2006-01-02 15:04"),
+		)
+	}
+
+	return nil
+}
+
+func runDedupStats(cmd *cobra.Command, args []string) error {
+	basePath := getDedupDir()
+
+	index, err := dedup.NewChunkIndex(basePath)
+	if err != nil {
+		return fmt.Errorf("failed to open chunk index: %w", err)
+	}
+	defer index.Close()
+
+	stats, err := index.Stats()
+	if err != nil {
+		return fmt.Errorf("failed to get stats: %w", err)
+	}
+
+	store, err := dedup.NewChunkStore(dedup.StoreConfig{BasePath: basePath})
+	if err != nil {
+		return fmt.Errorf("failed to open chunk store: %w", err)
+	}
+
+	storeStats, err := store.Stats()
+	if err != nil {
+		log.Warn("Failed to get store stats", "error", err)
+	}
+
+	fmt.Printf("Deduplication Statistics\n")
+	fmt.Printf("========================\n\n")
+	fmt.Printf("Store:           %s\n", basePath)
+	fmt.Printf("Manifests:       %d\n", stats.TotalManifests)
+	fmt.Printf("Unique chunks:   %d\n", stats.TotalChunks)
+	fmt.Printf("Total raw size:  %s\n", formatBytes(stats.TotalSizeRaw))
+	fmt.Printf("Stored size:     %s\n", formatBytes(stats.TotalSizeStored))
+	fmt.Printf("\n")
+	fmt.Printf("Backup Statistics (accurate dedup calculation):\n")
+	fmt.Printf("  Total backed up:  %s (across all backups)\n", formatBytes(stats.TotalBackupSize))
+	fmt.Printf("  New data stored:  %s\n", formatBytes(stats.TotalNewData))
+	fmt.Printf("  Space saved:      %s\n", formatBytes(stats.SpaceSaved))
+	fmt.Printf("  Dedup ratio:      %.1f%%\n", stats.DedupRatio*100)
+
+	if storeStats != nil {
+		fmt.Printf("Disk usage:      %s\n", formatBytes(storeStats.TotalSize))
+		fmt.Printf("Directories:     %d\n", storeStats.Directories)
+	}
+
+	return nil
+}
+
+func runDedupGC(cmd *cobra.Command, args []string) error {
+	basePath := getDedupDir()
+
+	index, err := dedup.NewChunkIndex(basePath)
+	if err != nil {
+		return fmt.Errorf("failed to open chunk index: %w", err)
+	}
+	defer index.Close()
+
+	store, err := dedup.NewChunkStore(dedup.StoreConfig{
+		BasePath: basePath,
+		Compress: dedupCompress,
+	})
+	if err != nil {
+		return fmt.Errorf("failed to open chunk store: %w", err)
+	}
+
+	// Find orphaned chunks
+	orphans, err := index.ListOrphanedChunks()
+	if err != nil {
+		return fmt.Errorf("failed to find orphaned chunks: %w", err)
+	}
+
+	if len(orphans) == 0 {
+		fmt.Println("No orphaned chunks to clean up.")
+		return nil
+	}
+
+	fmt.Printf("Found %d orphaned chunks\n", len(orphans))
+
+	var freed int64
+	for _, hash := range orphans {
+		if meta, _ := index.GetChunk(hash); meta != nil {
+			freed += meta.SizeStored
+		}
+		if err := store.Delete(hash); err != nil {
+			log.Warn("Failed to delete chunk", "hash", hash[:8], "error", err)
+			continue
+		}
+		if err := index.RemoveChunk(hash); err != nil {
+			log.Warn("Failed to remove chunk from index", "hash", hash[:8], "error", err)
+		}
+	}
+
+	fmt.Printf("Deleted %d chunks, freed %s\n", len(orphans), formatBytes(freed))
+
+	// Vacuum the index
+	if err := index.Vacuum(); err != nil {
+		log.Warn("Failed to vacuum index", "error", err)
+	}
+
+	return nil
+}
+
+func runDedupDelete(cmd *cobra.Command, args []string) error {
+	manifestID := args[0]
+	basePath := getDedupDir()
+
+	manifestStore, err := dedup.NewManifestStore(basePath)
+	if err != nil {
+		return fmt.Errorf("failed to open manifest store: %w", err)
+	}
+
+	index, err := dedup.NewChunkIndex(basePath)
+	if err != nil {
+		return fmt.Errorf("failed to open chunk index: %w", err)
+	}
+	defer index.Close()
+
+	// Load manifest to decrement chunk refs
+	manifest, err := manifestStore.Load(manifestID)
+	if err != nil {
+		return fmt.Errorf("failed to load manifest: %w", err)
+	}
+
+	// Decrement reference counts
+	for _, ref := range manifest.Chunks {
+		index.DecrementRef(ref.Hash)
+	}
+
+	// Delete manifest
+	if err := manifestStore.Delete(manifestID); err != nil {
+		return fmt.Errorf("failed to delete manifest: %w", err)
+	}
+
+	if err := index.RemoveManifest(manifestID); err != nil {
+		log.Warn("Failed to remove manifest from index", "error", err)
+	}
+
+	fmt.Printf("Deleted backup: %s\n", manifestID)
+	fmt.Println("Run 'dbbackup dedup gc' to reclaim space from unreferenced chunks.")
+
+	return nil
+}
+
+// Helper functions
+func formatBytes(b int64) string {
+	const unit = 1024
+	if b < unit {
+		return fmt.Sprintf("%d B", b)
+	}
+	div, exp := int64(unit), 0
+	for n := b / unit; n >= unit; n /= unit {
+		div *= unit
+		exp++
+	}
+	return fmt.Sprintf("%.1f %cB", float64(b)/float64(div), "KMGTPE"[exp])
+}
+
+func truncateStr(s string, max int) string {
+	if len(s) <= max {
+		return s
+	}
+	return s[:max-3] + "..."
+}
+
+func runDedupVerify(cmd *cobra.Command, args []string) error {
+	basePath := getDedupDir()
+
+	store, err := dedup.NewChunkStore(dedup.StoreConfig{
+		BasePath: basePath,
+		Compress: dedupCompress,
+	})
+	if err != nil {
+		return fmt.Errorf("failed to open chunk store: %w", err)
+	}
+
+	manifestStore, err := dedup.NewManifestStore(basePath)
+	if err != nil {
+		return fmt.Errorf("failed to open manifest store: %w", err)
+	}
+
+	index, err := dedup.NewChunkIndexAt(getIndexDBPath())
+	if err != nil {
+		return fmt.Errorf("failed to open chunk index: %w", err)
+	}
+	defer index.Close()
+
+	var manifests []*dedup.Manifest
+
+	if len(args) > 0 {
+		// Verify specific manifest
+		m, err := manifestStore.Load(args[0])
+		if err != nil {
+			return fmt.Errorf("failed to load manifest: %w", err)
+		}
+		manifests = []*dedup.Manifest{m}
+	} else {
+		// Verify all manifests
+		manifests, err = manifestStore.ListAll()
+		if err != nil {
+			return fmt.Errorf("failed to list manifests: %w", err)
+		}
+	}
+
+	if len(manifests) == 0 {
+		fmt.Println("No manifests to verify.")
+		return nil
+	}
+
+	fmt.Printf("Verifying %d backup(s)...\n\n", len(manifests))
+
+	var totalChunks, missingChunks, corruptChunks int
+	var allOK = true
+
+	for _, m := range manifests {
+		fmt.Printf("Verifying: %s (%d chunks)\n", m.ID, m.ChunkCount)
+
+		var missing, corrupt int
+		seenHashes := make(map[string]bool)
+
+		for i, ref := range m.Chunks {
+			if seenHashes[ref.Hash] {
+				continue // Already verified this chunk
+			}
+			seenHashes[ref.Hash] = true
+			totalChunks++
+
+			// Check if chunk exists
+			if !store.Has(ref.Hash) {
+				missing++
+				missingChunks++
+				if missing <= 5 {
+					fmt.Printf("  [MISSING] chunk %d: %s\n", i, ref.Hash[:16])
+				}
+				continue
+			}
+
+			// Verify chunk hash by reading it
+			chunk, err := store.Get(ref.Hash)
+			if err != nil {
+				corrupt++
+				corruptChunks++
+				if corrupt <= 5 {
+					fmt.Printf("  [CORRUPT] chunk %d: %s - %v\n", i, ref.Hash[:16], err)
+				}
+				continue
+			}
+
+			// Verify size
+			if chunk.Length != ref.Length {
+				corrupt++
+				corruptChunks++
+				if corrupt <= 5 {
+					fmt.Printf("  [SIZE MISMATCH] chunk %d: expected %d, got %d\n", i, ref.Length, chunk.Length)
+				}
+			}
+		}
+
+		if missing > 0 || corrupt > 0 {
+			allOK = false
+			fmt.Printf("  Result: FAILED (%d missing, %d corrupt)\n", missing, corrupt)
+			if missing > 5 || corrupt > 5 {
+				fmt.Printf("  ... and %d more errors\n", (missing+corrupt)-10)
+			}
+		} else {
+			fmt.Printf("  Result: OK (%d unique chunks verified)\n", len(seenHashes))
+			// Update verified timestamp
+			m.VerifiedAt = time.Now()
+			manifestStore.Save(m)
+			index.UpdateManifestVerified(m.ID, m.VerifiedAt)
+		}
+		fmt.Println()
+	}
+
+	fmt.Println("========================================")
+	if allOK {
+		fmt.Printf("All %d backup(s) verified successfully!\n", len(manifests))
+		fmt.Printf("Total unique chunks checked: %d\n", totalChunks)
+	} else {
+		fmt.Printf("Verification FAILED!\n")
+		fmt.Printf("Missing chunks: %d\n", missingChunks)
+		fmt.Printf("Corrupt chunks: %d\n", corruptChunks)
+		return fmt.Errorf("verification failed: %d missing, %d corrupt chunks", missingChunks, corruptChunks)
+	}
+
+	return nil
+}
+
+func runDedupPrune(cmd *cobra.Command, args []string) error {
+	if pruneKeepLast == 0 && pruneKeepDaily == 0 && pruneKeepWeekly == 0 {
+		return fmt.Errorf("at least one of --keep-last, --keep-daily, or --keep-weekly must be specified")
+	}
+
+	basePath := getDedupDir()
+
+	manifestStore, err := dedup.NewManifestStore(basePath)
+	if err != nil {
+		return fmt.Errorf("failed to open manifest store: %w", err)
+	}
+
+	index, err := dedup.NewChunkIndexAt(getIndexDBPath())
+	if err != nil {
+		return fmt.Errorf("failed to open chunk index: %w", err)
+	}
+	defer index.Close()
+
+	manifests, err := manifestStore.ListAll()
+	if err != nil {
+		return fmt.Errorf("failed to list manifests: %w", err)
+	}
+
+	if len(manifests) == 0 {
+		fmt.Println("No backups to prune.")
+		return nil
+	}
+
+	// Group by database name
+	byDatabase := make(map[string][]*dedup.Manifest)
+	for _, m := range manifests {
+		key := m.DatabaseName
+		if key == "" {
+			key = "_default"
+		}
+		byDatabase[key] = append(byDatabase[key], m)
+	}
+
+	var toDelete []*dedup.Manifest
+
+	for dbName, dbManifests := range byDatabase {
+		// Already sorted by time (newest first from ListAll)
+		kept := make(map[string]bool)
+		var keepReasons = make(map[string]string)
+
+		// Keep last N
+		if pruneKeepLast > 0 {
+			for i := 0; i < pruneKeepLast && i < len(dbManifests); i++ {
+				kept[dbManifests[i].ID] = true
+				keepReasons[dbManifests[i].ID] = "keep-last"
+			}
+		}
+
+		// Keep daily (one per day)
+		if pruneKeepDaily > 0 {
+			seenDays := make(map[string]bool)
+			count := 0
+			for _, m := range dbManifests {
+				day := m.CreatedAt.Format("2006-01-02")
+				if !seenDays[day] {
+					seenDays[day] = true
+					if count < pruneKeepDaily {
+						kept[m.ID] = true
+						if keepReasons[m.ID] == "" {
+							keepReasons[m.ID] = "keep-daily"
+						}
+						count++
+					}
+				}
+			}
+		}
+
+		// Keep weekly (one per week)
+		if pruneKeepWeekly > 0 {
+			seenWeeks := make(map[string]bool)
+			count := 0
+			for _, m := range dbManifests {
+				year, week := m.CreatedAt.ISOWeek()
+				weekKey := fmt.Sprintf("%d-W%02d", year, week)
+				if !seenWeeks[weekKey] {
+					seenWeeks[weekKey] = true
+					if count < pruneKeepWeekly {
+						kept[m.ID] = true
+						if keepReasons[m.ID] == "" {
+							keepReasons[m.ID] = "keep-weekly"
+						}
+						count++
+					}
+				}
+			}
+		}
+
+		if dbName != "_default" {
+			fmt.Printf("\nDatabase: %s\n", dbName)
+		} else {
+			fmt.Printf("\nUnnamed backups:\n")
+		}
+
+		for _, m := range dbManifests {
+			if kept[m.ID] {
+				fmt.Printf("  [KEEP]   %s (%s) - %s\n", m.ID, m.CreatedAt.Format("2006-01-02"), keepReasons[m.ID])
+			} else {
+				fmt.Printf("  [DELETE] %s (%s)\n", m.ID, m.CreatedAt.Format("2006-01-02"))
+				toDelete = append(toDelete, m)
+			}
+		}
+	}
+
+	if len(toDelete) == 0 {
+		fmt.Printf("\nNo backups to prune (all match retention policy).\n")
+		return nil
+	}
+
+	fmt.Printf("\n%d backup(s) will be deleted.\n", len(toDelete))
+
+	if pruneDryRun {
+		fmt.Println("\n[DRY RUN] No changes made. Remove --dry-run to actually delete.")
+		return nil
+	}
+
+	// Actually delete
+	for _, m := range toDelete {
+		// Decrement chunk references
+		for _, ref := range m.Chunks {
+			index.DecrementRef(ref.Hash)
+		}
+
+		if err := manifestStore.Delete(m.ID); err != nil {
+			log.Warn("Failed to delete manifest", "id", m.ID, "error", err)
+		}
+		index.RemoveManifest(m.ID)
+	}
+
+	fmt.Printf("\nDeleted %d backup(s).\n", len(toDelete))
+	fmt.Println("Run 'dbbackup dedup gc' to reclaim space from unreferenced chunks.")
+
+	return nil
+}
+
+func runDedupBackupDB(cmd *cobra.Command, args []string) error {
+	dbType := strings.ToLower(dedupDBType)
+	dbName := backupDBDatabase
+
+	// Validate db type
+	var dumpCmd string
+	var dumpArgs []string
+
+	switch dbType {
+	case "postgres", "postgresql", "pg":
+		dbType = "postgres"
+		dumpCmd = "pg_dump"
+		dumpArgs = []string{"-Fc"} // Custom format for better compression
+		if dedupDBHost != "" && dedupDBHost != "localhost" {
+			dumpArgs = append(dumpArgs, "-h", dedupDBHost)
+		}
+		if backupDBUser != "" {
+			dumpArgs = append(dumpArgs, "-U", backupDBUser)
+		}
+		dumpArgs = append(dumpArgs, dbName)
+
+	case "mysql":
+		dumpCmd = "mysqldump"
+		dumpArgs = []string{
+			"--single-transaction",
+			"--routines",
+			"--triggers",
+			"--events",
+		}
+		if dedupDBHost != "" {
+			dumpArgs = append(dumpArgs, "-h", dedupDBHost)
+		}
+		if backupDBUser != "" {
+			dumpArgs = append(dumpArgs, "-u", backupDBUser)
+		}
+		if backupDBPassword != "" {
+			dumpArgs = append(dumpArgs, "-p"+backupDBPassword)
+		}
+		dumpArgs = append(dumpArgs, dbName)
+
+	case "mariadb":
+		dumpCmd = "mariadb-dump"
+		// Fall back to mysqldump if mariadb-dump not available
+		if _, err := exec.LookPath(dumpCmd); err != nil {
+			dumpCmd = "mysqldump"
+		}
+		dumpArgs = []string{
+			"--single-transaction",
+			"--routines",
+			"--triggers",
+			"--events",
+		}
+		if dedupDBHost != "" {
+			dumpArgs = append(dumpArgs, "-h", dedupDBHost)
+		}
+		if backupDBUser != "" {
+			dumpArgs = append(dumpArgs, "-u", backupDBUser)
+		}
+		if backupDBPassword != "" {
+			dumpArgs = append(dumpArgs, "-p"+backupDBPassword)
+		}
+		dumpArgs = append(dumpArgs, dbName)
+
+	default:
+		return fmt.Errorf("unsupported database type: %s (use postgres, mysql, or mariadb)", dbType)
+	}
+
+	// Verify dump command exists
+	if _, err := exec.LookPath(dumpCmd); err != nil {
+		return fmt.Errorf("%s not found in PATH: %w", dumpCmd, err)
+	}
+
+	// Setup dedup storage
+	basePath := getDedupDir()
+	encKey := ""
+	if dedupEncrypt {
+		encKey = getEncryptionKey()
+		if encKey == "" {
+			return fmt.Errorf("encryption enabled but no key provided (use --key or DBBACKUP_DEDUP_KEY)")
+		}
+	}
+
+	store, err := dedup.NewChunkStore(dedup.StoreConfig{
+		BasePath:      basePath,
+		Compress:      dedupCompress,
+		EncryptionKey: encKey,
+	})
+	if err != nil {
+		return fmt.Errorf("failed to open chunk store: %w", err)
+	}
+
+	manifestStore, err := dedup.NewManifestStore(basePath)
+	if err != nil {
+		return fmt.Errorf("failed to open manifest store: %w", err)
+	}
+
+	index, err := dedup.NewChunkIndexAt(getIndexDBPath())
+	if err != nil {
+		return fmt.Errorf("failed to open chunk index: %w", err)
+	}
+	defer index.Close()
+
+	// Generate manifest ID
+	now := time.Now()
+	manifestID := now.Format("2006-01-02_150405") + "_" + dbName
+
+	fmt.Printf("Creating deduplicated database backup: %s\n", manifestID)
+	fmt.Printf("Database: %s (%s)\n", dbName, dbType)
+	fmt.Printf("Command: %s %s\n", dumpCmd, strings.Join(dumpArgs, " "))
+	fmt.Printf("Store: %s\n", basePath)
+
+	// Start the dump command
+	dumpExec := exec.Command(dumpCmd, dumpArgs...)
+
+	// Set password via environment for postgres
+	if dbType == "postgres" && backupDBPassword != "" {
+		dumpExec.Env = append(os.Environ(), "PGPASSWORD="+backupDBPassword)
+	}
+
+	stdout, err := dumpExec.StdoutPipe()
+	if err != nil {
+		return fmt.Errorf("failed to get stdout pipe: %w", err)
+	}
+
+	stderr, err := dumpExec.StderrPipe()
+	if err != nil {
+		return fmt.Errorf("failed to get stderr pipe: %w", err)
+	}
+
+	if err := dumpExec.Start(); err != nil {
+		return fmt.Errorf("failed to start %s: %w", dumpCmd, err)
+	}
+
+	// Hash while chunking using TeeReader
+	h := sha256.New()
+	reader := io.TeeReader(stdout, h)
+
+	// Chunk the stream directly
+	chunker := dedup.NewChunker(reader, dedup.DefaultChunkerConfig())
+	var chunks []dedup.ChunkRef
+	var totalSize, storedSize int64
+	var chunkCount, newChunks int
+
+	startTime := time.Now()
+
+	for {
+		chunk, err := chunker.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return fmt.Errorf("chunking failed: %w", err)
+		}
+
+		chunkCount++
+		totalSize += int64(chunk.Length)
+
+		// Store chunk (deduplication happens here)
+		isNew, err := store.Put(chunk)
+		if err != nil {
+			return fmt.Errorf("failed to store chunk: %w", err)
+		}
+
+		if isNew {
+			newChunks++
+			storedSize += int64(chunk.Length)
+			index.AddChunk(chunk.Hash, chunk.Length, chunk.Length)
+		}
+
+		chunks = append(chunks, dedup.ChunkRef{
+			Hash:   chunk.Hash,
+			Offset: chunk.Offset,
+			Length: chunk.Length,
+		})
+
+		if chunkCount%1000 == 0 {
+			fmt.Printf("\r  Processed %d chunks, %d new, %s...", chunkCount, newChunks, formatBytes(totalSize))
+		}
+	}
+
+	// Read any stderr
+	stderrBytes, _ := io.ReadAll(stderr)
+
+	// Wait for command to complete
+	if err := dumpExec.Wait(); err != nil {
+		return fmt.Errorf("%s failed: %w\nstderr: %s", dumpCmd, err, string(stderrBytes))
+	}
+
+	duration := time.Since(startTime)
+	fileHash := hex.EncodeToString(h.Sum(nil))
+
+	// Calculate dedup ratio
+	dedupRatio := 0.0
+	if totalSize > 0 {
+		dedupRatio = 1.0 - float64(storedSize)/float64(totalSize)
+	}
+
+	// Create manifest
+	manifest := &dedup.Manifest{
+		ID:           manifestID,
+		Name:         dedupName,
+		CreatedAt:    now,
+		DatabaseType: dbType,
+		DatabaseName: dbName,
+		DatabaseHost: dedupDBHost,
+		Chunks:       chunks,
+		OriginalSize: totalSize,
+		StoredSize:   storedSize,
+		ChunkCount:   chunkCount,
+		NewChunks:    newChunks,
+		DedupRatio:   dedupRatio,
+		Encrypted:    dedupEncrypt,
+		Compressed:   dedupCompress,
+		SHA256:       fileHash,
+	}
+
+	if err := manifestStore.Save(manifest); err != nil {
+		return fmt.Errorf("failed to save manifest: %w", err)
+	}
+
+	if err := index.AddManifest(manifest); err != nil {
+		log.Warn("Failed to index manifest", "error", err)
+	}
+
+	fmt.Printf("\r                                                    \r")
+	fmt.Printf("\nBackup complete!\n")
+	fmt.Printf("  Manifest:    %s\n", manifestID)
+	fmt.Printf("  Chunks:      %d total, %d new\n", chunkCount, newChunks)
+	fmt.Printf("  Dump size:   %s\n", formatBytes(totalSize))
+	fmt.Printf("  Stored:      %s (new data)\n", formatBytes(storedSize))
+	fmt.Printf("  Dedup ratio: %.1f%%\n", dedupRatio*100)
+	fmt.Printf("  Duration:    %s\n", duration.Round(time.Millisecond))
+	fmt.Printf("  Throughput:  %s/s\n", formatBytes(int64(float64(totalSize)/duration.Seconds())))
+
+	return nil
+}
+
+func runDedupMetrics(cmd *cobra.Command, args []string) error {
+	basePath := getDedupDir()
+	indexPath := getIndexDBPath()
+
+	instance := dedupMetricsInstance
+	if instance == "" {
+		hostname, _ := os.Hostname()
+		instance = hostname
+	}
+
+	metrics, err := dedup.CollectMetrics(basePath, indexPath)
+	if err != nil {
+		return fmt.Errorf("failed to collect metrics: %w", err)
+	}
+
+	output := dedup.FormatPrometheusMetrics(metrics, instance)
+
+	if dedupMetricsOutput != "" {
+		if err := dedup.WritePrometheusTextfile(dedupMetricsOutput, instance, basePath, indexPath); err != nil {
+			return fmt.Errorf("failed to write metrics: %w", err)
+		}
+		fmt.Printf("Wrote metrics to %s\n", dedupMetricsOutput)
+	} else {
+		fmt.Print(output)
+	}
+
+	return nil
+}

cmd/drill.go

@@ -318,7 +318,7 @@ func runDrillList(cmd *cobra.Command, args []string) error {
 	}
 
 	fmt.Printf("%-15s %-40s %-20s %s\n", "ID", "NAME", "IMAGE", "STATUS")
-	fmt.Println(strings.Repeat("─", 100))
+	fmt.Println(strings.Repeat("-", 100))
 
 	for _, c := range containers {
 		fmt.Printf("%-15s %-40s %-20s %s\n",
@@ -345,7 +345,7 @@ func runDrillCleanup(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	fmt.Println("✅ Cleanup completed")
+	fmt.Println("[OK] Cleanup completed")
 	return nil
 }
 
@@ -369,32 +369,32 @@ func runDrillReport(cmd *cobra.Command, args []string) error {
 
 func printDrillResult(result *drill.DrillResult) {
 	fmt.Printf("\n")
-	fmt.Printf("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n")
+	fmt.Printf("=====================================================\n")
 	fmt.Printf("  DR Drill Report: %s\n", result.DrillID)
-	fmt.Printf("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n\n")
+	fmt.Printf("=====================================================\n\n")
 
-	status := "✅ PASSED"
+	status := "[OK] PASSED"
 	if !result.Success {
-		status = "❌ FAILED"
+		status = "[FAIL] FAILED"
 	} else if result.Status == drill.StatusPartial {
-		status = "⚠️ PARTIAL"
+		status = "[WARN] PARTIAL"
 	}
 
-	fmt.Printf("📋 Status:       %s\n", status)
-	fmt.Printf("💾 Backup:       %s\n", filepath.Base(result.BackupPath))
-	fmt.Printf("🗄️  Database:     %s (%s)\n", result.DatabaseName, result.DatabaseType)
-	fmt.Printf("⏱️  Duration:     %.2fs\n", result.Duration)
+	fmt.Printf("[LOG] Status:       %s\n", status)
+	fmt.Printf("[SAVE] Backup:       %s\n", filepath.Base(result.BackupPath))
+	fmt.Printf("[DB]  Database:     %s (%s)\n", result.DatabaseName, result.DatabaseType)
+	fmt.Printf("[TIME]  Duration:     %.2fs\n", result.Duration)
 	fmt.Printf("📅 Started:      %s\n", result.StartTime.Format(time.RFC3339))
 	fmt.Printf("\n")
 
 	// Phases
-	fmt.Printf("📊 Phases:\n")
+	fmt.Printf("[STATS] Phases:\n")
 	for _, phase := range result.Phases {
-		icon := "✅"
+		icon := "[OK]"
 		if phase.Status == "failed" {
-			icon = "❌"
+			icon = "[FAIL]"
 		} else if phase.Status == "running" {
-			icon = "🔄"
+			icon = "[SYNC]"
 		}
 		fmt.Printf("   %s %-20s (%.2fs) %s\n", icon, phase.Name, phase.Duration, phase.Message)
 	}
@@ -412,10 +412,10 @@ func printDrillResult(result *drill.DrillResult) {
 	fmt.Printf("\n")
 
 	// RTO
-	fmt.Printf("⏱️  RTO Analysis:\n")
-	rtoIcon := "✅"
+	fmt.Printf("[TIME]  RTO Analysis:\n")
+	rtoIcon := "[OK]"
 	if !result.RTOMet {
-		rtoIcon = "❌"
+		rtoIcon = "[FAIL]"
 	}
 	fmt.Printf("   Actual RTO:     %.2fs\n", result.ActualRTO)
 	fmt.Printf("   Target RTO:     %.0fs\n", result.TargetRTO)
@@ -424,11 +424,11 @@ func printDrillResult(result *drill.DrillResult) {
 
 	// Validation results
 	if len(result.ValidationResults) > 0 {
-		fmt.Printf("🔍 Validation Queries:\n")
+		fmt.Printf("[SEARCH] Validation Queries:\n")
 		for _, vr := range result.ValidationResults {
-			icon := "✅"
+			icon := "[OK]"
 			if !vr.Success {
-				icon = "❌"
+				icon = "[FAIL]"
 			}
 			fmt.Printf("   %s %s: %s\n", icon, vr.Name, vr.Result)
 			if vr.Error != "" {
@@ -440,11 +440,11 @@ func printDrillResult(result *drill.DrillResult) {
 
 	// Check results
 	if len(result.CheckResults) > 0 {
-		fmt.Printf("✓ Checks:\n")
+		fmt.Printf("[OK] Checks:\n")
 		for _, cr := range result.CheckResults {
-			icon := "✅"
+			icon := "[OK]"
 			if !cr.Success {
-				icon = "❌"
+				icon = "[FAIL]"
 			}
 			fmt.Printf("   %s %s\n", icon, cr.Message)
 		}
@@ -453,7 +453,7 @@ func printDrillResult(result *drill.DrillResult) {
 
 	// Errors and warnings
 	if len(result.Errors) > 0 {
-		fmt.Printf("❌ Errors:\n")
+		fmt.Printf("[FAIL] Errors:\n")
 		for _, e := range result.Errors {
 			fmt.Printf("   • %s\n", e)
 		}
@@ -461,7 +461,7 @@ func printDrillResult(result *drill.DrillResult) {
 	}
 
 	if len(result.Warnings) > 0 {
-		fmt.Printf("⚠️ Warnings:\n")
+		fmt.Printf("[WARN] Warnings:\n")
 		for _, w := range result.Warnings {
 			fmt.Printf("   • %s\n", w)
 		}
@@ -470,14 +470,14 @@ func printDrillResult(result *drill.DrillResult) {
 
 	// Container info
 	if result.ContainerKept {
-		fmt.Printf("📦 Container kept: %s\n", result.ContainerID[:12])
+		fmt.Printf("[PKG] Container kept: %s\n", result.ContainerID[:12])
 		fmt.Printf("   Connect with: docker exec -it %s bash\n", result.ContainerID[:12])
 		fmt.Printf("\n")
 	}
 
-	fmt.Printf("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n")
+	fmt.Printf("=====================================================\n")
 	fmt.Printf("  %s\n", result.Message)
-	fmt.Printf("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n")
+	fmt.Printf("=====================================================\n")
 }
 
 func updateCatalogWithDrillResult(ctx context.Context, backupPath string, result *drill.DrillResult) {

cmd/engine.go

@@ -63,9 +63,9 @@ func runEngineList(cmd *cobra.Command, args []string) error {
 			continue
 		}
 
-		status := "✓ Available"
+		status := "[Y] Available"
 		if !avail.Available {
-			status = "✗ Not available"
+			status = "[N] Not available"
 		}
 
 		fmt.Printf("\n%s (%s)\n", info.Name, info.Description)

cmd/install.go

@@ -176,12 +176,12 @@ func runInstallStatus(ctx context.Context) error {
 	}
 
 	fmt.Println()
-	fmt.Println("📦 DBBackup Installation Status")
-	fmt.Println(strings.Repeat("═", 50))
+	fmt.Println("[STATUS] DBBackup Installation Status")
+	fmt.Println(strings.Repeat("=", 50))
 
 	if clusterStatus.Installed {
 		fmt.Println()
-		fmt.Println("🔹 Cluster Backup:")
+		fmt.Println("  * Cluster Backup:")
 		fmt.Printf("   Service:  %s\n", formatStatus(clusterStatus.Installed, clusterStatus.Active))
 		fmt.Printf("   Timer:    %s\n", formatStatus(clusterStatus.TimerEnabled, clusterStatus.TimerActive))
 		if clusterStatus.NextRun != "" {
@@ -192,7 +192,7 @@ func runInstallStatus(ctx context.Context) error {
 		}
 	} else {
 		fmt.Println()
-		fmt.Println("❌ No systemd services installed")
+		fmt.Println("[NONE] No systemd services installed")
 		fmt.Println()
 		fmt.Println("Run 'sudo dbbackup install' to install as a systemd service")
 	}
@@ -200,13 +200,13 @@ func runInstallStatus(ctx context.Context) error {
 	// Check for exporter
 	if _, err := os.Stat("/etc/systemd/system/dbbackup-exporter.service"); err == nil {
 		fmt.Println()
-		fmt.Println("🔹 Metrics Exporter:")
+		fmt.Println("  * Metrics Exporter:")
 		// Check if exporter is active using systemctl
 		cmd := exec.CommandContext(ctx, "systemctl", "is-active", "dbbackup-exporter")
 		if err := cmd.Run(); err == nil {
-			fmt.Printf("   Service:  ✅ active\n")
+			fmt.Printf("   Service:  [OK] active\n")
 		} else {
-			fmt.Printf("   Service:  ⚪ inactive\n")
+			fmt.Printf("   Service:  [-] inactive\n")
 		}
 	}
 
@@ -219,9 +219,9 @@ func formatStatus(installed, active bool) string {
 		return "not installed"
 	}
 	if active {
-		return "✅ active"
+		return "[OK] active"
 	}
-	return "⚪ inactive"
+	return "[-] inactive"
 }
 
 func expandSchedule(schedule string) string {

cmd/migrate.go

@@ -203,9 +203,17 @@ func runMigrateCluster(cmd *cobra.Command, args []string) error {
 		migrateTargetUser = migrateSourceUser
 	}
 
+	// Create source config first to get WorkDir
+	sourceCfg := config.New()
+	sourceCfg.Host = migrateSourceHost
+	sourceCfg.Port = migrateSourcePort
+	sourceCfg.User = migrateSourceUser
+	sourceCfg.Password = migrateSourcePassword
+
 	workdir := migrateWorkdir
 	if workdir == "" {
-		workdir = filepath.Join(os.TempDir(), "dbbackup-migrate")
+		// Use WorkDir from config if available
+		workdir = filepath.Join(sourceCfg.GetEffectiveWorkDir(), "dbbackup-migrate")
 	}
 
 	// Create working directory
@@ -213,12 +221,7 @@ func runMigrateCluster(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("failed to create working directory: %w", err)
 	}
 
-	// Create source config
-	sourceCfg := config.New()
-	sourceCfg.Host = migrateSourceHost
-	sourceCfg.Port = migrateSourcePort
-	sourceCfg.User = migrateSourceUser
-	sourceCfg.Password = migrateSourcePassword
+	// Update source config with remaining settings
 	sourceCfg.SSLMode = migrateSourceSSLMode
 	sourceCfg.Database = "postgres" // Default connection database
 	sourceCfg.DatabaseType = cfg.DatabaseType
@@ -342,7 +345,8 @@ func runMigrateSingle(cmd *cobra.Command, args []string) error {
 
 	workdir := migrateWorkdir
 	if workdir == "" {
-		workdir = filepath.Join(os.TempDir(), "dbbackup-migrate")
+		tempCfg := config.New()
+		workdir = filepath.Join(tempCfg.GetEffectiveWorkDir(), "dbbackup-migrate")
 	}
 
 	// Create working directory

cmd/pitr.go

@@ -436,7 +436,7 @@ func runPITREnable(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("failed to enable PITR: %w", err)
 	}
 
-	log.Info("✅ PITR enabled successfully!")
+	log.Info("[OK] PITR enabled successfully!")
 	log.Info("")
 	log.Info("Next steps:")
 	log.Info("1. Restart PostgreSQL: sudo systemctl restart postgresql")
@@ -463,7 +463,7 @@ func runPITRDisable(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("failed to disable PITR: %w", err)
 	}
 
-	log.Info("✅ PITR disabled successfully!")
+	log.Info("[OK] PITR disabled successfully!")
 	log.Info("PostgreSQL restart required: sudo systemctl restart postgresql")
 
 	return nil
@@ -483,15 +483,15 @@ func runPITRStatus(cmd *cobra.Command, args []string) error {
 	}
 
 	// Display PITR configuration
-	fmt.Println("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+	fmt.Println("======================================================")
 	fmt.Println("  Point-in-Time Recovery (PITR) Status")
-	fmt.Println("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+	fmt.Println("======================================================")
 	fmt.Println()
 
 	if config.Enabled {
-		fmt.Println("Status:          ✅ ENABLED")
+		fmt.Println("Status:          [OK] ENABLED")
 	} else {
-		fmt.Println("Status:          ❌ DISABLED")
+		fmt.Println("Status:          [FAIL] DISABLED")
 	}
 
 	fmt.Printf("WAL Level:       %s\n", config.WALLevel)
@@ -510,7 +510,7 @@ func runPITRStatus(cmd *cobra.Command, args []string) error {
 		// Extract archive dir from command (simple parsing)
 		fmt.Println()
 		fmt.Println("WAL Archive Statistics:")
-		fmt.Println("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+		fmt.Println("======================================================")
 		// TODO: Parse archive dir and show stats
 		fmt.Println("  (Use 'dbbackup wal list --archive-dir <dir>' to view archives)")
 	}
@@ -574,13 +574,13 @@ func runWALList(cmd *cobra.Command, args []string) error {
 	}
 
 	// Display archives
-	fmt.Println("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+	fmt.Println("======================================================")
 	fmt.Printf("  WAL Archives (%d files)\n", len(archives))
-	fmt.Println("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+	fmt.Println("======================================================")
 	fmt.Println()
 
 	fmt.Printf("%-28s  %10s  %10s  %8s  %s\n", "WAL Filename", "Timeline", "Segment", "Size", "Archived At")
-	fmt.Println("────────────────────────────────────────────────────────────────────────────────")
+	fmt.Println("--------------------------------------------------------------------------------")
 
 	for _, archive := range archives {
 		size := formatWALSize(archive.ArchivedSize)
@@ -644,7 +644,7 @@ func runWALCleanup(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("WAL cleanup failed: %w", err)
 	}
 
-	log.Info("✅ WAL cleanup completed", "deleted", deleted, "retention_days", archiveConfig.RetentionDays)
+	log.Info("[OK] WAL cleanup completed", "deleted", deleted, "retention_days", archiveConfig.RetentionDays)
 	return nil
 }
 
@@ -671,7 +671,7 @@ func runWALTimeline(cmd *cobra.Command, args []string) error {
 	// Display timeline details
 	if len(history.Timelines) > 0 {
 		fmt.Println("\nTimeline Details:")
-		fmt.Println("═════════════════")
+		fmt.Println("=================")
 		for _, tl := range history.Timelines {
 			fmt.Printf("\nTimeline %d:\n", tl.TimelineID)
 			if tl.ParentTimeline > 0 {
@@ -690,7 +690,7 @@ func runWALTimeline(cmd *cobra.Command, args []string) error {
 				fmt.Printf("  Created:     %s\n", tl.CreatedAt.Format("2006-01-02 15:04:05"))
 			}
 			if tl.TimelineID == history.CurrentTimeline {
-				fmt.Printf("  Status:      ⚡ CURRENT\n")
+				fmt.Printf("  Status:      [CURR] CURRENT\n")
 			}
 		}
 	}
@@ -759,15 +759,15 @@ func runBinlogList(cmd *cobra.Command, args []string) error {
 		return nil
 	}
 
-	fmt.Println("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+	fmt.Println("=============================================================")
 	fmt.Printf("  Binary Log Files (%s)\n", bm.ServerType())
-	fmt.Println("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+	fmt.Println("=============================================================")
 	fmt.Println()
 
 	if len(binlogs) > 0 {
 		fmt.Println("Source Directory:")
 		fmt.Printf("%-24s  %10s  %-19s  %-19s  %s\n", "Filename", "Size", "Start Time", "End Time", "Format")
-		fmt.Println("────────────────────────────────────────────────────────────────────────────────")
+		fmt.Println("--------------------------------------------------------------------------------")
 
 		var totalSize int64
 		for _, b := range binlogs {
@@ -797,7 +797,7 @@ func runBinlogList(cmd *cobra.Command, args []string) error {
 		fmt.Println()
 		fmt.Println("Archived Binlogs:")
 		fmt.Printf("%-24s  %10s  %-19s  %s\n", "Original", "Size", "Archived At", "Flags")
-		fmt.Println("────────────────────────────────────────────────────────────────────────────────")
+		fmt.Println("--------------------------------------------------------------------------------")
 
 		var totalSize int64
 		for _, a := range archived {
@@ -914,7 +914,7 @@ func runBinlogArchive(cmd *cobra.Command, args []string) error {
 		bm.SaveArchiveMetadata(allArchived)
 	}
 
-	log.Info("✅ Binlog archiving completed", "archived", len(newArchives))
+	log.Info("[OK] Binlog archiving completed", "archived", len(newArchives))
 	return nil
 }
 
@@ -1014,15 +1014,15 @@ func runBinlogValidate(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("validating binlog chain: %w", err)
 	}
 
-	fmt.Println("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+	fmt.Println("=============================================================")
 	fmt.Println("  Binlog Chain Validation")
-	fmt.Println("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+	fmt.Println("=============================================================")
 	fmt.Println()
 
 	if validation.Valid {
-		fmt.Println("Status:     ✅ VALID - Binlog chain is complete")
+		fmt.Println("Status:     [OK] VALID - Binlog chain is complete")
 	} else {
-		fmt.Println("Status:     ❌ INVALID - Binlog chain has gaps")
+		fmt.Println("Status:     [FAIL] INVALID - Binlog chain has gaps")
 	}
 
 	fmt.Printf("Files:      %d binlog files\n", validation.LogCount)
@@ -1055,7 +1055,7 @@ func runBinlogValidate(cmd *cobra.Command, args []string) error {
 		fmt.Println()
 		fmt.Println("Errors:")
 		for _, e := range validation.Errors {
-			fmt.Printf("  ✗ %s\n", e)
+			fmt.Printf("  [FAIL] %s\n", e)
 		}
 	}
 
@@ -1094,9 +1094,9 @@ func runBinlogPosition(cmd *cobra.Command, args []string) error {
 	}
 	defer rows.Close()
 
-	fmt.Println("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+	fmt.Println("=============================================================")
 	fmt.Println("  Current Binary Log Position")
-	fmt.Println("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+	fmt.Println("=============================================================")
 	fmt.Println()
 
 	if rows.Next() {
@@ -1178,24 +1178,24 @@ func runMySQLPITRStatus(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("getting PITR status: %w", err)
 	}
 
-	fmt.Println("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+	fmt.Println("=============================================================")
 	fmt.Printf("  MySQL/MariaDB PITR Status (%s)\n", status.DatabaseType)
-	fmt.Println("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+	fmt.Println("=============================================================")
 	fmt.Println()
 
 	if status.Enabled {
-		fmt.Println("PITR Status:     ✅ ENABLED")
+		fmt.Println("PITR Status:     [OK] ENABLED")
 	} else {
-		fmt.Println("PITR Status:     ❌ NOT CONFIGURED")
+		fmt.Println("PITR Status:     [FAIL] NOT CONFIGURED")
 	}
 
 	// Get binary logging status
 	var logBin string
 	db.QueryRowContext(ctx, "SELECT @@log_bin").Scan(&logBin)
 	if logBin == "1" || logBin == "ON" {
-		fmt.Println("Binary Logging:  ✅ ENABLED")
+		fmt.Println("Binary Logging:  [OK] ENABLED")
 	} else {
-		fmt.Println("Binary Logging:  ❌ DISABLED")
+		fmt.Println("Binary Logging:  [FAIL] DISABLED")
 	}
 
 	fmt.Printf("Binlog Format:   %s\n", status.LogLevel)
@@ -1205,14 +1205,14 @@ func runMySQLPITRStatus(cmd *cobra.Command, args []string) error {
 	if status.DatabaseType == pitr.DatabaseMariaDB {
 		db.QueryRowContext(ctx, "SELECT @@gtid_current_pos").Scan(&gtidMode)
 		if gtidMode != "" {
-			fmt.Println("GTID Mode:       ✅ ENABLED")
+			fmt.Println("GTID Mode:       [OK] ENABLED")
 		} else {
-			fmt.Println("GTID Mode:       ❌ DISABLED")
+			fmt.Println("GTID Mode:       [FAIL] DISABLED")
 		}
 	} else {
 		db.QueryRowContext(ctx, "SELECT @@gtid_mode").Scan(&gtidMode)
 		if gtidMode == "ON" {
-			fmt.Println("GTID Mode:       ✅ ENABLED")
+			fmt.Println("GTID Mode:       [OK] ENABLED")
 		} else {
 			fmt.Printf("GTID Mode:       %s\n", gtidMode)
 		}
@@ -1237,12 +1237,12 @@ func runMySQLPITRStatus(cmd *cobra.Command, args []string) error {
 	fmt.Println()
 	fmt.Println("PITR Requirements:")
 	if logBin == "1" || logBin == "ON" {
-		fmt.Println("  ✅ Binary logging enabled")
+		fmt.Println("  [OK] Binary logging enabled")
 	} else {
-		fmt.Println("  ❌ Binary logging must be enabled (log_bin = mysql-bin)")
+		fmt.Println("  [FAIL] Binary logging must be enabled (log_bin = mysql-bin)")
 	}
 	if status.LogLevel == "ROW" {
-		fmt.Println("  ✅ Row-based logging (recommended)")
+		fmt.Println("  [OK] Row-based logging (recommended)")
 	} else {
 		fmt.Printf("  ⚠  binlog_format = %s (ROW recommended for PITR)\n", status.LogLevel)
 	}
@@ -1299,7 +1299,7 @@ func runMySQLPITREnable(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("enabling PITR: %w", err)
 	}
 
-	log.Info("✅ MySQL PITR enabled successfully!")
+	log.Info("[OK] MySQL PITR enabled successfully!")
 	log.Info("")
 	log.Info("Next steps:")
 	log.Info("1. Start binlog archiving: dbbackup binlog watch --archive-dir " + mysqlArchiveDir)

cmd/placeholder.go

@@ -66,6 +66,15 @@ TUI Automation Flags (for testing and CI/CD):
 		cfg.TUIVerbose, _ = cmd.Flags().GetBool("verbose-tui")
 		cfg.TUILogFile, _ = cmd.Flags().GetString("tui-log-file")
 
+		// Set conservative profile as default for TUI mode (safer for interactive users)
+		if cfg.ResourceProfile == "" || cfg.ResourceProfile == "balanced" {
+			cfg.ResourceProfile = "conservative"
+			cfg.LargeDBMode = true
+			if cfg.Debug {
+				log.Info("TUI mode: using conservative profile by default")
+			}
+		}
+
 		// Check authentication before starting TUI
 		if cfg.IsPostgreSQL() {
 			if mismatch, msg := auth.CheckAuthenticationMismatch(cfg); mismatch {
@@ -141,7 +150,7 @@ func runList(ctx context.Context) error {
 				continue
 			}
 
-			fmt.Printf("📦 %s\n", file.Name)
+			fmt.Printf("[FILE] %s\n", file.Name)
 			fmt.Printf("   Size: %s\n", formatFileSize(stat.Size()))
 			fmt.Printf("   Modified: %s\n", stat.ModTime().Format("2006-01-02 15:04:05"))
 			fmt.Printf("   Type: %s\n", getBackupType(file.Name))
@@ -237,56 +246,56 @@ func runPreflight(ctx context.Context) error {
 	totalChecks := 6
 
 	// 1. Database connectivity check
-	fmt.Print("🔗 Database connectivity... ")
+	fmt.Print("[1] Database connectivity... ")
 	if err := testDatabaseConnection(); err != nil {
-		fmt.Printf("❌ FAILED: %v\n", err)
+		fmt.Printf("[FAIL] FAILED: %v\n", err)
 	} else {
-		fmt.Println("✅ PASSED")
+		fmt.Println("[OK] PASSED")
 		checksPassed++
 	}
 
 	// 2. Required tools check
-	fmt.Print("🛠️  Required tools (pg_dump/pg_restore)... ")
+	fmt.Print("[2] Required tools (pg_dump/pg_restore)... ")
 	if err := checkRequiredTools(); err != nil {
-		fmt.Printf("❌ FAILED: %v\n", err)
+		fmt.Printf("[FAIL] FAILED: %v\n", err)
 	} else {
-		fmt.Println("✅ PASSED")
+		fmt.Println("[OK] PASSED")
 		checksPassed++
 	}
 
 	// 3. Backup directory check
-	fmt.Print("📁 Backup directory access... ")
+	fmt.Print("[3] Backup directory access... ")
 	if err := checkBackupDirectory(); err != nil {
-		fmt.Printf("❌ FAILED: %v\n", err)
+		fmt.Printf("[FAIL] FAILED: %v\n", err)
 	} else {
-		fmt.Println("✅ PASSED")
+		fmt.Println("[OK] PASSED")
 		checksPassed++
 	}
 
 	// 4. Disk space check
-	fmt.Print("💾 Available disk space... ")
+	fmt.Print("[4] Available disk space... ")
 	if err := checkDiskSpace(); err != nil {
-		fmt.Printf("❌ FAILED: %v\n", err)
+		fmt.Printf("[FAIL] FAILED: %v\n", err)
 	} else {
-		fmt.Println("✅ PASSED")
+		fmt.Println("[OK] PASSED")
 		checksPassed++
 	}
 
 	// 5. Permissions check
-	fmt.Print("🔐 File permissions... ")
+	fmt.Print("[5] File permissions... ")
 	if err := checkPermissions(); err != nil {
-		fmt.Printf("❌ FAILED: %v\n", err)
+		fmt.Printf("[FAIL] FAILED: %v\n", err)
 	} else {
-		fmt.Println("✅ PASSED")
+		fmt.Println("[OK] PASSED")
 		checksPassed++
 	}
 
 	// 6. CPU/Memory resources check
-	fmt.Print("🖥️  System resources... ")
+	fmt.Print("[6] System resources... ")
 	if err := checkSystemResources(); err != nil {
-		fmt.Printf("❌ FAILED: %v\n", err)
+		fmt.Printf("[FAIL] FAILED: %v\n", err)
 	} else {
-		fmt.Println("✅ PASSED")
+		fmt.Println("[OK] PASSED")
 		checksPassed++
 	}
 
@@ -294,10 +303,10 @@ func runPreflight(ctx context.Context) error {
 	fmt.Printf("Results: %d/%d checks passed\n", checksPassed, totalChecks)
 
 	if checksPassed == totalChecks {
-		fmt.Println("🎉 All preflight checks passed! System is ready for backup operations.")
+		fmt.Println("[SUCCESS] All preflight checks passed! System is ready for backup operations.")
 		return nil
 	} else {
-		fmt.Printf("⚠️  %d check(s) failed. Please address the issues before running backups.\n", totalChecks-checksPassed)
+		fmt.Printf("[WARN] %d check(s) failed. Please address the issues before running backups.\n", totalChecks-checksPassed)
 		return fmt.Errorf("preflight checks failed: %d/%d passed", checksPassed, totalChecks)
 	}
 }
@@ -414,44 +423,44 @@ func runRestore(ctx context.Context, archiveName string) error {
 	fmt.Println()
 
 	// Show warning
-	fmt.Println("⚠️  WARNING: This will restore data to the target database.")
+	fmt.Println("[WARN] WARNING: This will restore data to the target database.")
 	fmt.Println("   Existing data may be overwritten or merged depending on the restore method.")
 	fmt.Println()
 
 	// For safety, show what would be done without actually doing it
 	switch archiveType {
 	case "Single Database (.dump)":
-		fmt.Println("🔄 Would execute: pg_restore to restore single database")
+		fmt.Println("[EXEC] Would execute: pg_restore to restore single database")
 		fmt.Printf("   Command: pg_restore -h %s -p %d -U %s -d %s --verbose %s\n",
 			cfg.Host, cfg.Port, cfg.User, cfg.Database, archivePath)
 	case "Single Database (.dump.gz)":
-		fmt.Println("🔄 Would execute: gunzip and pg_restore to restore single database")
+		fmt.Println("[EXEC] Would execute: gunzip and pg_restore to restore single database")
 		fmt.Printf("   Command: gunzip -c %s | pg_restore -h %s -p %d -U %s -d %s --verbose\n",
 			archivePath, cfg.Host, cfg.Port, cfg.User, cfg.Database)
 	case "SQL Script (.sql)":
 		if cfg.IsPostgreSQL() {
-			fmt.Println("🔄 Would execute: psql to run SQL script")
+			fmt.Println("[EXEC] Would execute: psql to run SQL script")
 			fmt.Printf("   Command: psql -h %s -p %d -U %s -d %s -f %s\n",
 				cfg.Host, cfg.Port, cfg.User, cfg.Database, archivePath)
 		} else if cfg.IsMySQL() {
-			fmt.Println("🔄 Would execute: mysql to run SQL script")
+			fmt.Println("[EXEC] Would execute: mysql to run SQL script")
 			fmt.Printf("   Command: %s\n", mysqlRestoreCommand(archivePath, false))
 		} else {
-			fmt.Println("🔄 Would execute: SQL client to run script (database type unknown)")
+			fmt.Println("[EXEC] Would execute: SQL client to run script (database type unknown)")
 		}
 	case "SQL Script (.sql.gz)":
 		if cfg.IsPostgreSQL() {
-			fmt.Println("🔄 Would execute: gunzip and psql to run SQL script")
+			fmt.Println("[EXEC] Would execute: gunzip and psql to run SQL script")
 			fmt.Printf("   Command: gunzip -c %s | psql -h %s -p %d -U %s -d %s\n",
 				archivePath, cfg.Host, cfg.Port, cfg.User, cfg.Database)
 		} else if cfg.IsMySQL() {
-			fmt.Println("🔄 Would execute: gunzip and mysql to run SQL script")
+			fmt.Println("[EXEC] Would execute: gunzip and mysql to run SQL script")
 			fmt.Printf("   Command: %s\n", mysqlRestoreCommand(archivePath, true))
 		} else {
-			fmt.Println("🔄 Would execute: gunzip and SQL client to run script (database type unknown)")
+			fmt.Println("[EXEC] Would execute: gunzip and SQL client to run script (database type unknown)")
 		}
 	case "Cluster Backup (.tar.gz)":
-		fmt.Println("🔄 Would execute: Extract and restore cluster backup")
+		fmt.Println("[EXEC] Would execute: Extract and restore cluster backup")
 		fmt.Println("   Steps:")
 		fmt.Println("   1. Extract tar.gz archive")
 		fmt.Println("   2. Restore global objects (roles, tablespaces)")
@@ -461,7 +470,7 @@ func runRestore(ctx context.Context, archiveName string) error {
 	}
 
 	fmt.Println()
-	fmt.Println("🛡️  SAFETY MODE: Restore command is in preview mode.")
+	fmt.Println("[SAFETY] SAFETY MODE: Restore command is in preview mode.")
 	fmt.Println("   This shows what would be executed without making changes.")
 	fmt.Println("   To enable actual restore, add --confirm flag (not yet implemented).")
 
@@ -520,25 +529,25 @@ func runVerify(ctx context.Context, archiveName string) error {
 	checksPassed := 0
 
 	// Basic file existence and readability
-	fmt.Print("📁 File accessibility... ")
+	fmt.Print("[CHK] File accessibility... ")
 	if file, err := os.Open(archivePath); err != nil {
-		fmt.Printf("❌ FAILED: %v\n", err)
+		fmt.Printf("[FAIL] FAILED: %v\n", err)
 	} else {
 		file.Close()
-		fmt.Println("✅ PASSED")
+		fmt.Println("[OK] PASSED")
 		checksPassed++
 	}
 	checksRun++
 
 	// File size sanity check
-	fmt.Print("📏 File size check... ")
+	fmt.Print("[CHK] File size check... ")
 	if stat.Size() == 0 {
-		fmt.Println("❌ FAILED: File is empty")
+		fmt.Println("[FAIL] FAILED: File is empty")
 	} else if stat.Size() < 100 {
-		fmt.Println("⚠️  WARNING: File is very small (< 100 bytes)")
+		fmt.Println("[WARN] WARNING: File is very small (< 100 bytes)")
 		checksPassed++
 	} else {
-		fmt.Println("✅ PASSED")
+		fmt.Println("[OK] PASSED")
 		checksPassed++
 	}
 	checksRun++
@@ -546,51 +555,51 @@ func runVerify(ctx context.Context, archiveName string) error {
 	// Type-specific verification
 	switch archiveType {
 	case "Single Database (.dump)":
-		fmt.Print("🔍 PostgreSQL dump format check... ")
+		fmt.Print("[CHK] PostgreSQL dump format check... ")
 		if err := verifyPgDump(archivePath); err != nil {
-			fmt.Printf("❌ FAILED: %v\n", err)
+			fmt.Printf("[FAIL] FAILED: %v\n", err)
 		} else {
-			fmt.Println("✅ PASSED")
+			fmt.Println("[OK] PASSED")
 			checksPassed++
 		}
 		checksRun++
 
 	case "Single Database (.dump.gz)":
-		fmt.Print("🔍 PostgreSQL dump format check (gzip)... ")
+		fmt.Print("[CHK] PostgreSQL dump format check (gzip)... ")
 		if err := verifyPgDumpGzip(archivePath); err != nil {
-			fmt.Printf("❌ FAILED: %v\n", err)
+			fmt.Printf("[FAIL] FAILED: %v\n", err)
 		} else {
-			fmt.Println("✅ PASSED")
+			fmt.Println("[OK] PASSED")
 			checksPassed++
 		}
 		checksRun++
 
 	case "SQL Script (.sql)":
-		fmt.Print("📜 SQL script validation... ")
+		fmt.Print("[CHK] SQL script validation... ")
 		if err := verifySqlScript(archivePath); err != nil {
-			fmt.Printf("❌ FAILED: %v\n", err)
+			fmt.Printf("[FAIL] FAILED: %v\n", err)
 		} else {
-			fmt.Println("✅ PASSED")
+			fmt.Println("[OK] PASSED")
 			checksPassed++
 		}
 		checksRun++
 
 	case "SQL Script (.sql.gz)":
-		fmt.Print("📜 SQL script validation (gzip)... ")
+		fmt.Print("[CHK] SQL script validation (gzip)... ")
 		if err := verifyGzipSqlScript(archivePath); err != nil {
-			fmt.Printf("❌ FAILED: %v\n", err)
+			fmt.Printf("[FAIL] FAILED: %v\n", err)
 		} else {
-			fmt.Println("✅ PASSED")
+			fmt.Println("[OK] PASSED")
 			checksPassed++
 		}
 		checksRun++
 
 	case "Cluster Backup (.tar.gz)":
-		fmt.Print("📦 Archive extraction test... ")
+		fmt.Print("[CHK] Archive extraction test... ")
 		if err := verifyTarGz(archivePath); err != nil {
-			fmt.Printf("❌ FAILED: %v\n", err)
+			fmt.Printf("[FAIL] FAILED: %v\n", err)
 		} else {
-			fmt.Println("✅ PASSED")
+			fmt.Println("[OK] PASSED")
 			checksPassed++
 		}
 		checksRun++
@@ -598,11 +607,11 @@ func runVerify(ctx context.Context, archiveName string) error {
 
 	// Check for metadata file
 	metadataPath := archivePath + ".info"
-	fmt.Print("📋 Metadata file check... ")
+	fmt.Print("[CHK] Metadata file check... ")
 	if _, err := os.Stat(metadataPath); os.IsNotExist(err) {
-		fmt.Println("⚠️  WARNING: No metadata file found")
+		fmt.Println("[WARN] WARNING: No metadata file found")
 	} else {
-		fmt.Println("✅ PASSED")
+		fmt.Println("[OK] PASSED")
 		checksPassed++
 	}
 	checksRun++
@@ -611,13 +620,13 @@ func runVerify(ctx context.Context, archiveName string) error {
 	fmt.Printf("Verification Results: %d/%d checks passed\n", checksPassed, checksRun)
 
 	if checksPassed == checksRun {
-		fmt.Println("🎉 Archive verification completed successfully!")
+		fmt.Println("[SUCCESS] Archive verification completed successfully!")
 		return nil
 	} else if float64(checksPassed)/float64(checksRun) >= 0.8 {
-		fmt.Println("⚠️  Archive verification completed with warnings.")
+		fmt.Println("[WARN] Archive verification completed with warnings.")
 		return nil
 	} else {
-		fmt.Println("❌ Archive verification failed. Archive may be corrupted.")
+		fmt.Println("[FAIL] Archive verification failed. Archive may be corrupted.")
 		return fmt.Errorf("verification failed: %d/%d checks passed", checksPassed, checksRun)
 	}
 }

cmd/restore.go

@@ -13,8 +13,10 @@ import (
 
 	"dbbackup/internal/backup"
 	"dbbackup/internal/cloud"
+	"dbbackup/internal/config"
 	"dbbackup/internal/database"
 	"dbbackup/internal/pitr"
+	"dbbackup/internal/progress"
 	"dbbackup/internal/restore"
 	"dbbackup/internal/security"
 
@@ -28,6 +30,8 @@ var (
 	restoreClean        bool
 	restoreCreate       bool
 	restoreJobs         int
+	restoreParallelDBs  int    // Number of parallel database restores
+	restoreProfile      string // Resource profile: conservative, balanced, aggressive
 	restoreTarget       string
 	restoreVerbose      bool
 	restoreNoProgress   bool
@@ -35,11 +39,18 @@ var (
 	restoreCleanCluster bool
 	restoreDiagnose     bool   // Run diagnosis before restore
 	restoreSaveDebugLog string // Path to save debug log on failure
+	restoreDebugLocks   bool   // Enable detailed lock debugging
+
+	// Single database extraction from cluster flags
+	restoreDatabase  string // Single database to extract/restore from cluster
+	restoreDatabases string // Comma-separated list of databases to extract
+	restoreOutputDir string // Extract to directory (no restore)
+	restoreListDBs   bool   // List databases in cluster backup
 
 	// Diagnose flags
-	diagnoseJSON       bool
-	diagnoseDeep       bool
-	diagnoseKeepTemp   bool
+	diagnoseJSON     bool
+	diagnoseDeep     bool
+	diagnoseKeepTemp bool
 
 	// Encryption flags
 	restoreEncryptionKeyFile string
@@ -111,6 +122,9 @@ Examples:
   # Restore to different database
   dbbackup restore single mydb.dump.gz --target mydb_test --confirm
 
+  # Memory-constrained server (single-threaded, minimal memory)
+  dbbackup restore single mydb.dump.gz --profile=conservative --confirm
+
   # Clean target database before restore
   dbbackup restore single mydb.sql.gz --clean --confirm
 
@@ -130,6 +144,11 @@ var restoreClusterCmd = &cobra.Command{
 This command restores all databases that were backed up together
 in a cluster backup operation.
 
+Single Database Extraction:
+  Use --list-databases to see available databases
+  Use --database to extract/restore a specific database
+  Use --output-dir to extract without restoring
+
 Safety features:
   - Dry-run by default (use --confirm to execute)
   - Archive validation and listing
@@ -137,12 +156,33 @@ Safety features:
   - Sequential database restoration
 
 Examples:
+  # List databases in cluster backup
+  dbbackup restore cluster backup.tar.gz --list-databases
+
+  # Extract single database (no restore)
+  dbbackup restore cluster backup.tar.gz --database myapp --output-dir /tmp/extract
+
+  # Restore single database from cluster
+  dbbackup restore cluster backup.tar.gz --database myapp --confirm
+
+  # Restore single database with different name
+  dbbackup restore cluster backup.tar.gz --database myapp --target myapp_test --confirm
+
+  # Extract multiple databases
+  dbbackup restore cluster backup.tar.gz --databases "app1,app2,app3" --output-dir /tmp/extract
+
   # Preview cluster restore
   dbbackup restore cluster cluster_backup_20240101_120000.tar.gz
 
   # Restore full cluster
   dbbackup restore cluster cluster_backup_20240101_120000.tar.gz --confirm
 
+	# Memory-constrained server (conservative profile)
+	dbbackup restore cluster cluster_backup.tar.gz --profile=conservative --confirm
+
+	# Maximum performance (dedicated server)
+	dbbackup restore cluster cluster_backup.tar.gz --profile=aggressive --confirm
+
 	# Use parallel decompression
 	dbbackup restore cluster cluster_backup.tar.gz --jobs 4 --confirm
 
@@ -276,19 +316,27 @@ func init() {
 	restoreSingleCmd.Flags().BoolVar(&restoreClean, "clean", false, "Drop and recreate target database")
 	restoreSingleCmd.Flags().BoolVar(&restoreCreate, "create", false, "Create target database if it doesn't exist")
 	restoreSingleCmd.Flags().StringVar(&restoreTarget, "target", "", "Target database name (defaults to original)")
+	restoreSingleCmd.Flags().StringVar(&restoreProfile, "profile", "balanced", "Resource profile: conservative (--parallel=1, low memory), balanced, aggressive (max performance)")
 	restoreSingleCmd.Flags().BoolVar(&restoreVerbose, "verbose", false, "Show detailed restore progress")
 	restoreSingleCmd.Flags().BoolVar(&restoreNoProgress, "no-progress", false, "Disable progress indicators")
 	restoreSingleCmd.Flags().StringVar(&restoreEncryptionKeyFile, "encryption-key-file", "", "Path to encryption key file (required for encrypted backups)")
 	restoreSingleCmd.Flags().StringVar(&restoreEncryptionKeyEnv, "encryption-key-env", "DBBACKUP_ENCRYPTION_KEY", "Environment variable containing encryption key")
 	restoreSingleCmd.Flags().BoolVar(&restoreDiagnose, "diagnose", false, "Run deep diagnosis before restore to detect corruption/truncation")
 	restoreSingleCmd.Flags().StringVar(&restoreSaveDebugLog, "save-debug-log", "", "Save detailed error report to file on failure (e.g., /tmp/restore-debug.json)")
+	restoreSingleCmd.Flags().BoolVar(&restoreDebugLocks, "debug-locks", false, "Enable detailed lock debugging (captures PostgreSQL config, Guard decisions, boost attempts)")
 
 	// Cluster restore flags
+	restoreClusterCmd.Flags().BoolVar(&restoreListDBs, "list-databases", false, "List databases in cluster backup and exit")
+	restoreClusterCmd.Flags().StringVar(&restoreDatabase, "database", "", "Extract/restore single database from cluster")
+	restoreClusterCmd.Flags().StringVar(&restoreDatabases, "databases", "", "Extract multiple databases (comma-separated)")
+	restoreClusterCmd.Flags().StringVar(&restoreOutputDir, "output-dir", "", "Extract to directory without restoring (requires --database or --databases)")
 	restoreClusterCmd.Flags().BoolVar(&restoreConfirm, "confirm", false, "Confirm and execute restore (required)")
 	restoreClusterCmd.Flags().BoolVar(&restoreDryRun, "dry-run", false, "Show what would be done without executing")
 	restoreClusterCmd.Flags().BoolVar(&restoreForce, "force", false, "Skip safety checks and confirmations")
 	restoreClusterCmd.Flags().BoolVar(&restoreCleanCluster, "clean-cluster", false, "Drop all existing user databases before restore (disaster recovery)")
-	restoreClusterCmd.Flags().IntVar(&restoreJobs, "jobs", 0, "Number of parallel decompression jobs (0 = auto)")
+	restoreClusterCmd.Flags().StringVar(&restoreProfile, "profile", "conservative", "Resource profile: conservative (single-threaded, prevents lock issues), balanced (auto-detect), aggressive (max speed)")
+	restoreClusterCmd.Flags().IntVar(&restoreJobs, "jobs", 0, "Number of parallel decompression jobs (0 = auto, overrides profile)")
+	restoreClusterCmd.Flags().IntVar(&restoreParallelDBs, "parallel-dbs", 0, "Number of databases to restore in parallel (0 = use profile, 1 = sequential, -1 = auto-detect, overrides profile)")
 	restoreClusterCmd.Flags().StringVar(&restoreWorkdir, "workdir", "", "Working directory for extraction (use when system disk is small, e.g. /mnt/storage/restore_tmp)")
 	restoreClusterCmd.Flags().BoolVar(&restoreVerbose, "verbose", false, "Show detailed restore progress")
 	restoreClusterCmd.Flags().BoolVar(&restoreNoProgress, "no-progress", false, "Disable progress indicators")
@@ -296,6 +344,9 @@ func init() {
 	restoreClusterCmd.Flags().StringVar(&restoreEncryptionKeyEnv, "encryption-key-env", "DBBACKUP_ENCRYPTION_KEY", "Environment variable containing encryption key")
 	restoreClusterCmd.Flags().BoolVar(&restoreDiagnose, "diagnose", false, "Run deep diagnosis on all dumps before restore")
 	restoreClusterCmd.Flags().StringVar(&restoreSaveDebugLog, "save-debug-log", "", "Save detailed error report to file on failure (e.g., /tmp/restore-debug.json)")
+	restoreClusterCmd.Flags().BoolVar(&restoreDebugLocks, "debug-locks", false, "Enable detailed lock debugging (captures PostgreSQL config, Guard decisions, boost attempts)")
+	restoreClusterCmd.Flags().BoolVar(&restoreClean, "clean", false, "Drop and recreate target database (for single DB restore)")
+	restoreClusterCmd.Flags().BoolVar(&restoreCreate, "create", false, "Create target database if it doesn't exist (for single DB restore)")
 
 	// PITR restore flags
 	restorePITRCmd.Flags().StringVar(&pitrBaseBackup, "base-backup", "", "Path to base backup file (.tar.gz) (required)")
@@ -342,7 +393,7 @@ func runRestoreDiagnose(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("archive not found: %s", archivePath)
 	}
 
-	log.Info("🔍 Diagnosing backup file", "path", archivePath)
+	log.Info("[DIAG] Diagnosing backup file", "path", archivePath)
 
 	diagnoser := restore.NewDiagnoser(log, restoreVerbose)
 
@@ -350,10 +401,11 @@ func runRestoreDiagnose(cmd *cobra.Command, args []string) error {
 	format := restore.DetectArchiveFormat(archivePath)
 
 	if format.IsClusterBackup() && diagnoseDeep {
-		// Create temp directory for extraction
-		tempDir, err := os.MkdirTemp("", "dbbackup-diagnose-*")
+		// Create temp directory for extraction in configured WorkDir
+		workDir := cfg.GetEffectiveWorkDir()
+		tempDir, err := os.MkdirTemp(workDir, "dbbackup-diagnose-*")
 		if err != nil {
-			return fmt.Errorf("failed to create temp directory: %w", err)
+			return fmt.Errorf("failed to create temp directory in %s: %w", workDir, err)
 		}
 
 		if !diagnoseKeepTemp {
@@ -386,7 +438,7 @@ func runRestoreDiagnose(cmd *cobra.Command, args []string) error {
 		// Summary
 		if !diagnoseJSON {
 			fmt.Println("\n" + strings.Repeat("=", 70))
-			fmt.Printf("📊 CLUSTER SUMMARY: %d databases analyzed\n", len(results))
+			fmt.Printf("[SUMMARY] CLUSTER SUMMARY: %d databases analyzed\n", len(results))
 
 			validCount := 0
 			for _, r := range results {
@@ -396,9 +448,9 @@ func runRestoreDiagnose(cmd *cobra.Command, args []string) error {
 			}
 
 			if validCount == len(results) {
-				fmt.Println("✅ All dumps are valid")
+				fmt.Println("[OK] All dumps are valid")
 			} else {
-				fmt.Printf("❌ %d/%d dumps have issues\n", len(results)-validCount, len(results))
+				fmt.Printf("[FAIL] %d/%d dumps have issues\n", len(results)-validCount, len(results))
 			}
 			fmt.Println(strings.Repeat("=", 70))
 		}
@@ -425,7 +477,7 @@ func runRestoreDiagnose(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("backup file has validation errors")
 	}
 
-	log.Info("✅ Backup file appears valid")
+	log.Info("[OK] Backup file appears valid")
 	return nil
 }
 
@@ -433,6 +485,16 @@ func runRestoreDiagnose(cmd *cobra.Command, args []string) error {
 func runRestoreSingle(cmd *cobra.Command, args []string) error {
 	archivePath := args[0]
 
+	// Apply resource profile
+	if err := config.ApplyProfile(cfg, restoreProfile, restoreJobs, 0); err != nil {
+		log.Warn("Invalid profile, using balanced", "error", err)
+		restoreProfile = "balanced"
+		_ = config.ApplyProfile(cfg, restoreProfile, restoreJobs, 0)
+	}
+	if cfg.Debug && restoreProfile != "balanced" {
+		log.Info("Using restore profile", "profile", restoreProfile)
+	}
+
 	// Check if this is a cloud URI
 	var cleanupFunc func() error
 
@@ -544,7 +606,7 @@ func runRestoreSingle(cmd *cobra.Command, args []string) error {
 	isDryRun := restoreDryRun || !restoreConfirm
 
 	if isDryRun {
-		fmt.Println("\n🔍 DRY-RUN MODE - No changes will be made")
+		fmt.Println("\n[DRY-RUN] DRY-RUN MODE - No changes will be made")
 		fmt.Printf("\nWould restore:\n")
 		fmt.Printf("  Archive: %s\n", archivePath)
 		fmt.Printf("  Format: %s\n", format.String())
@@ -564,13 +626,19 @@ func runRestoreSingle(cmd *cobra.Command, args []string) error {
 
 	// Create restore engine
 	engine := restore.New(cfg, log, db)
-	
+
 	// Enable debug logging if requested
 	if restoreSaveDebugLog != "" {
 		engine.SetDebugLogPath(restoreSaveDebugLog)
 		log.Info("Debug logging enabled", "output", restoreSaveDebugLog)
 	}
 
+	// Enable lock debugging if requested (single restore)
+	if restoreDebugLocks {
+		cfg.DebugLocks = true
+		log.Info("🔍 Lock debugging enabled - will capture PostgreSQL lock config, Guard decisions, boost attempts")
+	}
+
 	// Setup signal handling
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
@@ -587,18 +655,18 @@ func runRestoreSingle(cmd *cobra.Command, args []string) error {
 
 	// Run pre-restore diagnosis if requested
 	if restoreDiagnose {
-		log.Info("🔍 Running pre-restore diagnosis...")
-		
+		log.Info("[DIAG] Running pre-restore diagnosis...")
+
 		diagnoser := restore.NewDiagnoser(log, restoreVerbose)
 		result, err := diagnoser.DiagnoseFile(archivePath)
 		if err != nil {
 			return fmt.Errorf("diagnosis failed: %w", err)
 		}
-		
+
 		diagnoser.PrintDiagnosis(result)
-		
+
 		if !result.IsValid {
-			log.Error("❌ Pre-restore diagnosis found issues")
+			log.Error("[FAIL] Pre-restore diagnosis found issues")
 			if result.IsTruncated {
 				log.Error("   The backup file appears to be TRUNCATED")
 			}
@@ -606,13 +674,13 @@ func runRestoreSingle(cmd *cobra.Command, args []string) error {
 				log.Error("   The backup file appears to be CORRUPTED")
 			}
 			fmt.Println("\nUse --force to attempt restore anyway.")
-			
+
 			if !restoreForce {
 				return fmt.Errorf("aborting restore due to backup file issues")
 			}
 			log.Warn("Continuing despite diagnosis errors (--force enabled)")
 		} else {
-			log.Info("✅ Backup file passed diagnosis")
+			log.Info("[OK] Backup file passed diagnosis")
 		}
 	}
 
@@ -632,7 +700,7 @@ func runRestoreSingle(cmd *cobra.Command, args []string) error {
 	// Audit log: restore success
 	auditLogger.LogRestoreComplete(user, targetDB, time.Since(startTime))
 
-	log.Info("✅ Restore completed successfully", "database", targetDB)
+	log.Info("[OK] Restore completed successfully", "database", targetDB)
 	return nil
 }
 
@@ -654,6 +722,203 @@ func runRestoreCluster(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("archive not found: %s", archivePath)
 	}
 
+	// Handle --list-databases flag
+	if restoreListDBs {
+		return runListDatabases(archivePath)
+	}
+
+	// Handle single/multiple database extraction
+	if restoreDatabase != "" || restoreDatabases != "" {
+		return runExtractDatabases(archivePath)
+	}
+
+	// Otherwise proceed with full cluster restore
+	return runFullClusterRestore(archivePath)
+}
+
+// runListDatabases lists all databases in a cluster backup
+func runListDatabases(archivePath string) error {
+	ctx := context.Background()
+
+	log.Info("Scanning cluster backup", "archive", filepath.Base(archivePath))
+	fmt.Println()
+
+	databases, err := restore.ListDatabasesInCluster(ctx, archivePath, log)
+	if err != nil {
+		return fmt.Errorf("failed to list databases: %w", err)
+	}
+
+	fmt.Printf("📦 Databases in cluster backup:\n")
+	var totalSize int64
+	for _, db := range databases {
+		sizeStr := formatSize(db.Size)
+		fmt.Printf("  - %-30s (%s)\n", db.Name, sizeStr)
+		totalSize += db.Size
+	}
+
+	fmt.Printf("\nTotal: %s across %d database(s)\n", formatSize(totalSize), len(databases))
+	return nil
+}
+
+// runExtractDatabases extracts single or multiple databases from cluster backup
+func runExtractDatabases(archivePath string) error {
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	// Setup signal handling
+	sigChan := make(chan os.Signal, 1)
+	signal.Notify(sigChan, os.Interrupt, syscall.SIGTERM)
+	defer signal.Stop(sigChan)
+
+	go func() {
+		<-sigChan
+		log.Warn("Extraction interrupted by user")
+		cancel()
+	}()
+
+	// Single database extraction
+	if restoreDatabase != "" {
+		return handleSingleDatabaseExtraction(ctx, archivePath, restoreDatabase)
+	}
+
+	// Multiple database extraction
+	if restoreDatabases != "" {
+		return handleMultipleDatabaseExtraction(ctx, archivePath, restoreDatabases)
+	}
+
+	return nil
+}
+
+// handleSingleDatabaseExtraction handles single database extraction or restore
+func handleSingleDatabaseExtraction(ctx context.Context, archivePath, dbName string) error {
+	// Extract-only mode (no restore)
+	if restoreOutputDir != "" {
+		return extractSingleDatabase(ctx, archivePath, dbName, restoreOutputDir)
+	}
+
+	// Restore mode
+	if !restoreConfirm {
+		fmt.Println("\n[DRY-RUN] DRY-RUN MODE - No changes will be made")
+		fmt.Printf("\nWould extract and restore:\n")
+		fmt.Printf("  Database: %s\n", dbName)
+		fmt.Printf("  From: %s\n", archivePath)
+		targetDB := restoreTarget
+		if targetDB == "" {
+			targetDB = dbName
+		}
+		fmt.Printf("  Target: %s\n", targetDB)
+		if restoreClean {
+			fmt.Printf("  Clean: true (drop and recreate)\n")
+		}
+		if restoreCreate {
+			fmt.Printf("  Create: true (create if missing)\n")
+		}
+		fmt.Println("\nTo execute this restore, add --confirm flag")
+		return nil
+	}
+
+	// Create database instance
+	db, err := database.New(cfg, log)
+	if err != nil {
+		return fmt.Errorf("failed to create database instance: %w", err)
+	}
+	defer db.Close()
+
+	// Create restore engine
+	engine := restore.New(cfg, log, db)
+
+	// Determine target database name
+	targetDB := restoreTarget
+	if targetDB == "" {
+		targetDB = dbName
+	}
+
+	log.Info("Restoring single database from cluster", "database", dbName, "target", targetDB)
+
+	// Restore single database from cluster
+	if err := engine.RestoreSingleFromCluster(ctx, archivePath, dbName, targetDB, restoreClean, restoreCreate); err != nil {
+		return fmt.Errorf("restore failed: %w", err)
+	}
+
+	fmt.Printf("\n✅ Successfully restored '%s' as '%s'\n", dbName, targetDB)
+	return nil
+}
+
+// extractSingleDatabase extracts a single database without restoring
+func extractSingleDatabase(ctx context.Context, archivePath, dbName, outputDir string) error {
+	log.Info("Extracting database", "database", dbName, "output", outputDir)
+
+	// Create progress indicator
+	prog := progress.NewIndicator(!restoreNoProgress, "dots")
+
+	extractedPath, err := restore.ExtractDatabaseFromCluster(ctx, archivePath, dbName, outputDir, log, prog)
+	if err != nil {
+		return fmt.Errorf("extraction failed: %w", err)
+	}
+
+	fmt.Printf("\n✅ Extracted: %s\n", extractedPath)
+	fmt.Printf("   Database: %s\n", dbName)
+	fmt.Printf("   Location: %s\n", outputDir)
+	return nil
+}
+
+// handleMultipleDatabaseExtraction handles multiple database extraction
+func handleMultipleDatabaseExtraction(ctx context.Context, archivePath, databases string) error {
+	if restoreOutputDir == "" {
+		return fmt.Errorf("--output-dir required when using --databases")
+	}
+
+	// Parse database list
+	dbNames := strings.Split(databases, ",")
+	for i := range dbNames {
+		dbNames[i] = strings.TrimSpace(dbNames[i])
+	}
+
+	log.Info("Extracting multiple databases", "count", len(dbNames), "output", restoreOutputDir)
+
+	// Create progress indicator
+	prog := progress.NewIndicator(!restoreNoProgress, "dots")
+
+	extractedPaths, err := restore.ExtractMultipleDatabasesFromCluster(ctx, archivePath, dbNames, restoreOutputDir, log, prog)
+	if err != nil {
+		return fmt.Errorf("extraction failed: %w", err)
+	}
+
+	fmt.Printf("\n✅ Extracted %d database(s):\n", len(extractedPaths))
+	for dbName, path := range extractedPaths {
+		fmt.Printf("   - %s → %s\n", dbName, filepath.Base(path))
+	}
+	fmt.Printf("   Location: %s\n", restoreOutputDir)
+	return nil
+}
+
+// runFullClusterRestore performs a full cluster restore
+func runFullClusterRestore(archivePath string) error {
+
+	// Apply resource profile
+	if err := config.ApplyProfile(cfg, restoreProfile, restoreJobs, restoreParallelDBs); err != nil {
+		log.Warn("Invalid profile, using balanced", "error", err)
+		restoreProfile = "balanced"
+		_ = config.ApplyProfile(cfg, restoreProfile, restoreJobs, restoreParallelDBs)
+	}
+	if cfg.Debug || restoreProfile != "balanced" {
+		log.Info("Using restore profile", "profile", restoreProfile, "parallel_dbs", cfg.ClusterParallelism, "jobs", cfg.Jobs)
+	}
+
+	// Convert to absolute path
+	if !filepath.IsAbs(archivePath) {
+		absPath, err := filepath.Abs(archivePath)
+		if err != nil {
+			return fmt.Errorf("invalid archive path: %w", err)
+		}
+		archivePath = absPath
+	}
+
+	// Check if file exists
+	if _, err := os.Stat(archivePath); err != nil {
+		return fmt.Errorf("archive not found: %s", archivePath)
+	}
+
 	// Check if backup is encrypted and decrypt if necessary
 	if backup.IsBackupEncrypted(archivePath) {
 		log.Info("Encrypted cluster backup detected, decrypting...")
@@ -700,7 +965,7 @@ func runRestoreCluster(cmd *cobra.Command, args []string) error {
 				}
 			}
 
-			log.Warn("⚠️  Using alternative working directory for extraction")
+			log.Warn("[WARN] Using alternative working directory for extraction")
 			log.Warn("    This is recommended when system disk space is limited")
 			log.Warn("    Location: " + restoreWorkdir)
 		}
@@ -753,7 +1018,7 @@ func runRestoreCluster(cmd *cobra.Command, args []string) error {
 	isDryRun := restoreDryRun || !restoreConfirm
 
 	if isDryRun {
-		fmt.Println("\n🔍 DRY-RUN MODE - No changes will be made")
+		fmt.Println("\n[DRY-RUN] DRY-RUN MODE - No changes will be made")
 		fmt.Printf("\nWould restore cluster:\n")
 		fmt.Printf("  Archive: %s\n", archivePath)
 		fmt.Printf("  Parallel Jobs: %d (0 = auto)\n", restoreJobs)
@@ -763,7 +1028,7 @@ func runRestoreCluster(cmd *cobra.Command, args []string) error {
 		if restoreCleanCluster {
 			fmt.Printf("  Clean Cluster: true (will drop %d existing database(s))\n", len(existingDBs))
 			if len(existingDBs) > 0 {
-				fmt.Printf("\n⚠️  Databases to be dropped:\n")
+				fmt.Printf("\n[WARN] Databases to be dropped:\n")
 				for _, dbName := range existingDBs {
 					fmt.Printf("    - %s\n", dbName)
 				}
@@ -775,22 +1040,39 @@ func runRestoreCluster(cmd *cobra.Command, args []string) error {
 
 	// Warning for clean-cluster
 	if restoreCleanCluster && len(existingDBs) > 0 {
-		log.Warn("🔥 Clean cluster mode enabled")
+		log.Warn("[!!] Clean cluster mode enabled")
 		log.Warn(fmt.Sprintf("   %d existing database(s) will be DROPPED before restore!", len(existingDBs)))
 		for _, dbName := range existingDBs {
 			log.Warn("   - " + dbName)
 		}
 	}
 
+	// Override cluster parallelism if --parallel-dbs is specified
+	if restoreParallelDBs == -1 {
+		// Auto-detect optimal parallelism based on system resources
+		autoParallel := restore.CalculateOptimalParallel()
+		cfg.ClusterParallelism = autoParallel
+		log.Info("Auto-detected optimal parallelism for database restores", "parallel_dbs", autoParallel, "mode", "auto")
+	} else if restoreParallelDBs > 0 {
+		cfg.ClusterParallelism = restoreParallelDBs
+		log.Info("Using custom parallelism for database restores", "parallel_dbs", restoreParallelDBs)
+	}
+
 	// Create restore engine
 	engine := restore.New(cfg, log, db)
-	
+
 	// Enable debug logging if requested
 	if restoreSaveDebugLog != "" {
 		engine.SetDebugLogPath(restoreSaveDebugLog)
 		log.Info("Debug logging enabled", "output", restoreSaveDebugLog)
 	}
 
+	// Enable lock debugging if requested (cluster restore)
+	if restoreDebugLocks {
+		cfg.DebugLocks = true
+		log.Info("🔍 Lock debugging enabled - will capture PostgreSQL lock config, Guard decisions, boost attempts")
+	}
+
 	// Setup signal handling
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
@@ -826,23 +1108,52 @@ func runRestoreCluster(cmd *cobra.Command, args []string) error {
 		log.Info("Database cleanup completed")
 	}
 
-	// Run pre-restore diagnosis if requested
+	// OPTIMIZATION: Pre-extract archive once for both diagnosis and restore
+	// This avoids extracting the same tar.gz twice (saves 5-10 min on large clusters)
+	var extractedDir string
+	var extractErr error
+
+	if restoreDiagnose || restoreConfirm {
+		log.Info("Pre-extracting cluster archive (shared for validation and restore)...")
+		extractedDir, extractErr = safety.ValidateAndExtractCluster(ctx, archivePath)
+		if extractErr != nil {
+			return fmt.Errorf("failed to extract cluster archive: %w", extractErr)
+		}
+		defer os.RemoveAll(extractedDir) // Cleanup at end
+		log.Info("Archive extracted successfully", "location", extractedDir)
+	}
+
+	// Run pre-restore diagnosis if requested (using already-extracted directory)
 	if restoreDiagnose {
-		log.Info("🔍 Running pre-restore diagnosis...")
-		
-		// Create temp directory for extraction
-		diagTempDir, err := os.MkdirTemp("", "dbbackup-diagnose-*")
-		if err != nil {
-			return fmt.Errorf("failed to create temp directory for diagnosis: %w", err)
-		}
-		defer os.RemoveAll(diagTempDir)
-		
+		log.Info("[DIAG] Running pre-restore diagnosis on extracted dumps...")
+
 		diagnoser := restore.NewDiagnoser(log, restoreVerbose)
-		results, err := diagnoser.DiagnoseClusterDumps(archivePath, diagTempDir)
-		if err != nil {
-			return fmt.Errorf("diagnosis failed: %w", err)
+		// Diagnose dumps directly from extracted directory
+		dumpsDir := filepath.Join(extractedDir, "dumps")
+		if _, err := os.Stat(dumpsDir); err != nil {
+			return fmt.Errorf("no dumps directory found in extracted archive: %w", err)
 		}
-		
+
+		entries, err := os.ReadDir(dumpsDir)
+		if err != nil {
+			return fmt.Errorf("failed to read dumps directory: %w", err)
+		}
+
+		// Diagnose each dump file
+		var results []*restore.DiagnoseResult
+		for _, entry := range entries {
+			if entry.IsDir() {
+				continue
+			}
+			dumpPath := filepath.Join(dumpsDir, entry.Name())
+			result, err := diagnoser.DiagnoseFile(dumpPath)
+			if err != nil {
+				log.Warn("Could not diagnose dump", "file", entry.Name(), "error", err)
+				continue
+			}
+			results = append(results, result)
+		}
+
 		// Check for any invalid dumps
 		var invalidDumps []string
 		for _, result := range results {
@@ -851,24 +1162,24 @@ func runRestoreCluster(cmd *cobra.Command, args []string) error {
 				diagnoser.PrintDiagnosis(result)
 			}
 		}
-		
+
 		if len(invalidDumps) > 0 {
-			log.Error("❌ Pre-restore diagnosis found issues",
+			log.Error("[FAIL] Pre-restore diagnosis found issues",
 				"invalid_dumps", len(invalidDumps),
 				"total_dumps", len(results))
-			fmt.Println("\n⚠️  The following dumps have issues and will likely fail during restore:")
+			fmt.Println("\n[WARN] The following dumps have issues and will likely fail during restore:")
 			for _, name := range invalidDumps {
 				fmt.Printf("    - %s\n", name)
 			}
 			fmt.Println("\nRun 'dbbackup restore diagnose <archive> --deep' for full details.")
 			fmt.Println("Use --force to attempt restore anyway.")
-			
+
 			if !restoreForce {
 				return fmt.Errorf("aborting restore due to %d invalid dump(s)", len(invalidDumps))
 			}
 			log.Warn("Continuing despite diagnosis errors (--force enabled)")
 		} else {
-			log.Info("✅ All dumps passed diagnosis", "count", len(results))
+			log.Info("[OK] All dumps passed diagnosis", "count", len(results))
 		}
 	}
 
@@ -880,7 +1191,8 @@ func runRestoreCluster(cmd *cobra.Command, args []string) error {
 	startTime := time.Now()
 	auditLogger.LogRestoreStart(user, "all_databases", archivePath)
 
-	if err := engine.RestoreCluster(ctx, archivePath); err != nil {
+	// Pass pre-extracted directory to avoid double extraction
+	if err := engine.RestoreCluster(ctx, archivePath, extractedDir); err != nil {
 		auditLogger.LogRestoreFailed(user, "all_databases", err)
 		return fmt.Errorf("cluster restore failed: %w", err)
 	}
@@ -888,7 +1200,7 @@ func runRestoreCluster(cmd *cobra.Command, args []string) error {
 	// Audit log: restore success
 	auditLogger.LogRestoreComplete(user, "all_databases", time.Since(startTime))
 
-	log.Info("✅ Cluster restore completed successfully")
+	log.Info("[OK] Cluster restore completed successfully")
 	return nil
 }
 
@@ -937,7 +1249,7 @@ func runRestoreList(cmd *cobra.Command, args []string) error {
 	}
 
 	// Print header
-	fmt.Printf("\n📦 Available backup archives in %s\n\n", backupDir)
+	fmt.Printf("\n[LIST] Available backup archives in %s\n\n", backupDir)
 	fmt.Printf("%-40s %-25s %-12s %-20s %s\n",
 		"FILENAME", "FORMAT", "SIZE", "MODIFIED", "DATABASE")
 	fmt.Println(strings.Repeat("-", 120))
@@ -1054,9 +1366,9 @@ func runRestorePITR(cmd *cobra.Command, args []string) error {
 	}
 
 	// Display recovery target info
-	log.Info("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+	log.Info("=====================================================")
 	log.Info("  Point-in-Time Recovery (PITR)")
-	log.Info("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+	log.Info("=====================================================")
 	log.Info("")
 	log.Info(target.String())
 	log.Info("")
@@ -1080,6 +1392,6 @@ func runRestorePITR(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("PITR restore failed: %w", err)
 	}
 
-	log.Info("✅ PITR restore completed successfully")
+	log.Info("[OK] PITR restore completed successfully")
 	return nil
 }

cmd/root.go

@@ -134,6 +134,7 @@ func Execute(ctx context.Context, config *config.Config, logger logger.Logger) e
 	rootCmd.PersistentFlags().StringVar(&cfg.BackupDir, "backup-dir", cfg.BackupDir, "Backup directory")
 	rootCmd.PersistentFlags().BoolVar(&cfg.NoColor, "no-color", cfg.NoColor, "Disable colored output")
 	rootCmd.PersistentFlags().BoolVar(&cfg.Debug, "debug", cfg.Debug, "Enable debug logging")
+	rootCmd.PersistentFlags().BoolVar(&cfg.DebugLocks, "debug-locks", cfg.DebugLocks, "Enable detailed lock debugging (captures PostgreSQL lock configuration, Large DB Guard decisions, boost attempts)")
 	rootCmd.PersistentFlags().IntVar(&cfg.Jobs, "jobs", cfg.Jobs, "Number of parallel jobs")
 	rootCmd.PersistentFlags().IntVar(&cfg.DumpJobs, "dump-jobs", cfg.DumpJobs, "Number of parallel dump jobs")
 	rootCmd.PersistentFlags().IntVar(&cfg.MaxCores, "max-cores", cfg.MaxCores, "Maximum CPU cores to use")

cmd/rto.go

@@ -181,13 +181,13 @@ func runRTOStatus(cmd *cobra.Command, args []string) error {
 
 	// Display status
 	fmt.Println()
-	fmt.Println("╔═══════════════════════════════════════════════════════════╗")
-	fmt.Println("║              RTO/RPO STATUS SUMMARY                       ║")
-	fmt.Println("╠═══════════════════════════════════════════════════════════╣")
-	fmt.Printf("║  Target RTO: %-15s  Target RPO: %-15s ║\n",
+	fmt.Println("+-----------------------------------------------------------+")
+	fmt.Println("|              RTO/RPO STATUS SUMMARY                       |")
+	fmt.Println("+-----------------------------------------------------------+")
+	fmt.Printf("|  Target RTO: %-15s  Target RPO: %-15s |\n",
 		formatDuration(config.TargetRTO),
 		formatDuration(config.TargetRPO))
-	fmt.Println("╠═══════════════════════════════════════════════════════════╣")
+	fmt.Println("+-----------------------------------------------------------+")
 
 	// Compliance status
 	rpoRate := 0.0
@@ -199,31 +199,31 @@ func runRTOStatus(cmd *cobra.Command, args []string) error {
 		fullRate = float64(summary.FullyCompliant) / float64(summary.TotalDatabases) * 100
 	}
 
-	fmt.Printf("║  Databases:     %-5d                                      ║\n", summary.TotalDatabases)
-	fmt.Printf("║  RPO Compliant: %-5d  (%.0f%%)                              ║\n", summary.RPOCompliant, rpoRate)
-	fmt.Printf("║  RTO Compliant: %-5d  (%.0f%%)                              ║\n", summary.RTOCompliant, rtoRate)
-	fmt.Printf("║  Fully Compliant: %-3d  (%.0f%%)                             ║\n", summary.FullyCompliant, fullRate)
+	fmt.Printf("|  Databases:     %-5d                                      |\n", summary.TotalDatabases)
+	fmt.Printf("|  RPO Compliant: %-5d  (%.0f%%)                              |\n", summary.RPOCompliant, rpoRate)
+	fmt.Printf("|  RTO Compliant: %-5d  (%.0f%%)                              |\n", summary.RTOCompliant, rtoRate)
+	fmt.Printf("|  Fully Compliant: %-3d  (%.0f%%)                             |\n", summary.FullyCompliant, fullRate)
 
 	if summary.CriticalIssues > 0 {
-		fmt.Printf("║  ⚠️  Critical Issues: %-3d                                  ║\n", summary.CriticalIssues)
+		fmt.Printf("|  [WARN]  Critical Issues: %-3d                                  |\n", summary.CriticalIssues)
 	}
 
-	fmt.Println("╠═══════════════════════════════════════════════════════════╣")
-	fmt.Printf("║  Average RPO: %-15s  Worst: %-15s    ║\n",
+	fmt.Println("+-----------------------------------------------------------+")
+	fmt.Printf("|  Average RPO: %-15s  Worst: %-15s    |\n",
 		formatDuration(summary.AverageRPO),
 		formatDuration(summary.WorstRPO))
-	fmt.Printf("║  Average RTO: %-15s  Worst: %-15s    ║\n",
+	fmt.Printf("|  Average RTO: %-15s  Worst: %-15s    |\n",
 		formatDuration(summary.AverageRTO),
 		formatDuration(summary.WorstRTO))
 
 	if summary.WorstRPODatabase != "" {
-		fmt.Printf("║  Worst RPO Database: %-38s║\n", summary.WorstRPODatabase)
+		fmt.Printf("|  Worst RPO Database: %-38s|\n", summary.WorstRPODatabase)
 	}
 	if summary.WorstRTODatabase != "" {
-		fmt.Printf("║  Worst RTO Database: %-38s║\n", summary.WorstRTODatabase)
+		fmt.Printf("|  Worst RTO Database: %-38s|\n", summary.WorstRTODatabase)
 	}
 
-	fmt.Println("╚═══════════════════════════════════════════════════════════╝")
+	fmt.Println("+-----------------------------------------------------------+")
 	fmt.Println()
 
 	// Per-database status
@@ -234,19 +234,19 @@ func runRTOStatus(cmd *cobra.Command, args []string) error {
 		fmt.Println(strings.Repeat("-", 70))
 
 		for _, a := range analyses {
-			status := "✅"
+			status := "[OK]"
 			if !a.RPOCompliant || !a.RTOCompliant {
-				status = "❌"
+				status = "[FAIL]"
 			}
 
 			rpoStr := formatDuration(a.CurrentRPO)
 			rtoStr := formatDuration(a.CurrentRTO)
 
 			if !a.RPOCompliant {
-				rpoStr = "⚠️ " + rpoStr
+				rpoStr = "[WARN] " + rpoStr
 			}
 			if !a.RTOCompliant {
-				rtoStr = "⚠️ " + rtoStr
+				rtoStr = "[WARN] " + rtoStr
 			}
 
 			fmt.Printf("%-25s %-12s %-12s %s\n",
@@ -306,21 +306,21 @@ func runRTOCheck(cmd *cobra.Command, args []string) error {
 	exitCode := 0
 	for _, a := range analyses {
 		if !a.RPOCompliant {
-			fmt.Printf("❌ %s: RPO violation - current %s exceeds target %s\n",
+			fmt.Printf("[FAIL] %s: RPO violation - current %s exceeds target %s\n",
 				a.Database,
 				formatDuration(a.CurrentRPO),
 				formatDuration(config.TargetRPO))
 			exitCode = 1
 		}
 		if !a.RTOCompliant {
-			fmt.Printf("❌ %s: RTO violation - estimated %s exceeds target %s\n",
+			fmt.Printf("[FAIL] %s: RTO violation - estimated %s exceeds target %s\n",
 				a.Database,
 				formatDuration(a.CurrentRTO),
 				formatDuration(config.TargetRTO))
 			exitCode = 1
 		}
 		if a.RPOCompliant && a.RTOCompliant {
-			fmt.Printf("✅ %s: Compliant (RPO: %s, RTO: %s)\n",
+			fmt.Printf("[OK] %s: Compliant (RPO: %s, RTO: %s)\n",
 				a.Database,
 				formatDuration(a.CurrentRPO),
 				formatDuration(a.CurrentRTO))
@@ -371,13 +371,13 @@ func outputAnalysisText(analyses []*rto.Analysis) error {
 		fmt.Println(strings.Repeat("=", 60))
 
 		// Status
-		rpoStatus := "✅ Compliant"
+		rpoStatus := "[OK] Compliant"
 		if !a.RPOCompliant {
-			rpoStatus = "❌ Violation"
+			rpoStatus = "[FAIL] Violation"
 		}
-		rtoStatus := "✅ Compliant"
+		rtoStatus := "[OK] Compliant"
 		if !a.RTOCompliant {
-			rtoStatus = "❌ Violation"
+			rtoStatus = "[FAIL] Violation"
 		}
 
 		fmt.Println()
@@ -420,7 +420,7 @@ func outputAnalysisText(analyses []*rto.Analysis) error {
 			fmt.Println("  Recommendations:")
 			fmt.Println(strings.Repeat("-", 50))
 			for _, r := range a.Recommendations {
-				icon := "💡"
+				icon := "[TIP]"
 				switch r.Priority {
 				case rto.PriorityCritical:
 					icon = "🔴"

cmd/status.go

@@ -141,7 +141,7 @@ func testConnection(ctx context.Context) error {
 
 	// Display results
 	fmt.Println("Connection Test Results:")
-	fmt.Printf("  Status:        Connected ✅\n")
+	fmt.Printf("  Status:        Connected [OK]\n")
 	fmt.Printf("  Version:       %s\n", version)
 	fmt.Printf("  Databases:     %d found\n", len(databases))
 
@@ -167,7 +167,7 @@ func testConnection(ctx context.Context) error {
 	}
 
 	fmt.Println()
-	fmt.Println("✅ Status check completed successfully!")
+	fmt.Println("[OK] Status check completed successfully!")
 
 	return nil
 }

cmd/verify.go

@@ -96,17 +96,17 @@ func runVerifyBackup(cmd *cobra.Command, args []string) error {
 			continue
 		}
 
-		fmt.Printf("📁 %s\n", filepath.Base(backupFile))
+		fmt.Printf("[FILE] %s\n", filepath.Base(backupFile))
 
 		if quickVerify {
 			// Quick check: size only
 			err := verification.QuickCheck(backupFile)
 			if err != nil {
-				fmt.Printf("   ❌ FAILED: %v\n\n", err)
+				fmt.Printf("   [FAIL] FAILED: %v\n\n", err)
 				failureCount++
 				continue
 			}
-			fmt.Printf("   ✅ VALID (quick check)\n\n")
+			fmt.Printf("   [OK] VALID (quick check)\n\n")
 			successCount++
 		} else {
 			// Full verification with SHA-256
@@ -116,7 +116,7 @@ func runVerifyBackup(cmd *cobra.Command, args []string) error {
 			}
 
 			if result.Valid {
-				fmt.Printf("   ✅ VALID\n")
+				fmt.Printf("   [OK] VALID\n")
 				if verboseVerify {
 					meta, _ := metadata.Load(backupFile)
 					fmt.Printf("   Size: %s\n", metadata.FormatSize(meta.SizeBytes))
@@ -127,7 +127,7 @@ func runVerifyBackup(cmd *cobra.Command, args []string) error {
 				fmt.Println()
 				successCount++
 			} else {
-				fmt.Printf("   ❌ FAILED: %v\n", result.Error)
+				fmt.Printf("   [FAIL] FAILED: %v\n", result.Error)
 				if verboseVerify {
 					if !result.FileExists {
 						fmt.Printf("   File does not exist\n")
@@ -147,11 +147,11 @@ func runVerifyBackup(cmd *cobra.Command, args []string) error {
 	}
 
 	// Summary
-	fmt.Println(strings.Repeat("─", 50))
+	fmt.Println(strings.Repeat("-", 50))
 	fmt.Printf("Total: %d backups\n", len(backupFiles))
-	fmt.Printf("✅ Valid: %d\n", successCount)
+	fmt.Printf("[OK] Valid: %d\n", successCount)
 	if failureCount > 0 {
-		fmt.Printf("❌ Failed: %d\n", failureCount)
+		fmt.Printf("[FAIL] Failed: %d\n", failureCount)
 		os.Exit(1)
 	}
 
@@ -195,16 +195,16 @@ func runVerifyCloudBackup(cmd *cobra.Command, args []string) error {
 
 	for _, uri := range args {
 		if !isCloudURI(uri) {
-			fmt.Printf("⚠️  Skipping non-cloud URI: %s\n", uri)
+			fmt.Printf("[WARN] Skipping non-cloud URI: %s\n", uri)
 			continue
 		}
 
-		fmt.Printf("☁️  %s\n", uri)
+		fmt.Printf("[CLOUD] %s\n", uri)
 
 		// Download and verify
 		result, err := verifyCloudBackup(cmd.Context(), uri, quickVerify, verboseVerify)
 		if err != nil {
-			fmt.Printf("   ❌ FAILED: %v\n\n", err)
+			fmt.Printf("   [FAIL] FAILED: %v\n\n", err)
 			failureCount++
 			continue
 		}
@@ -212,7 +212,7 @@ func runVerifyCloudBackup(cmd *cobra.Command, args []string) error {
 		// Cleanup temp file
 		defer result.Cleanup()
 
-		fmt.Printf("   ✅ VALID\n")
+		fmt.Printf("   [OK] VALID\n")
 		if verboseVerify && result.MetadataPath != "" {
 			meta, _ := metadata.Load(result.MetadataPath)
 			if meta != nil {
@@ -226,7 +226,7 @@ func runVerifyCloudBackup(cmd *cobra.Command, args []string) error {
 		successCount++
 	}
 
-	fmt.Printf("\n✅ Summary: %d valid, %d failed\n", successCount, failureCount)
+	fmt.Printf("\n[OK] Summary: %d valid, %d failed\n", successCount, failureCount)
 
 	if failureCount > 0 {
 		os.Exit(1)

diagnose_postgres_memory.sh

@@ -0,0 +1,359 @@
+#!/bin/bash
+#
+# PostgreSQL Memory and Resource Diagnostic Tool
+# Analyzes memory usage, locks, and system resources to identify restore issues
+#
+
+set -e
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m' # No Color
+
+echo "════════════════════════════════════════════════════════════"
+echo "  PostgreSQL Memory & Resource Diagnostics"
+echo "  $(date '+%Y-%m-%d %H:%M:%S')"
+echo "════════════════════════════════════════════════════════════"
+echo
+
+# Function to format bytes to human readable
+bytes_to_human() {
+    local bytes=$1
+    if [ "$bytes" -ge 1073741824 ]; then
+        echo "$(awk "BEGIN {printf \"%.2f GB\", $bytes/1073741824}")"
+    elif [ "$bytes" -ge 1048576 ]; then
+        echo "$(awk "BEGIN {printf \"%.2f MB\", $bytes/1048576}")"
+    else
+        echo "$(awk "BEGIN {printf \"%.2f KB\", $bytes/1024}")"
+    fi
+}
+
+# 1. SYSTEM MEMORY OVERVIEW
+echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo -e "${BLUE}📊 SYSTEM MEMORY OVERVIEW${NC}"
+echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo
+
+if command -v free &> /dev/null; then
+    free -h
+    echo
+    
+    # Calculate percentages
+    MEM_TOTAL=$(free -b | awk '/^Mem:/ {print $2}')
+    MEM_USED=$(free -b | awk '/^Mem:/ {print $3}')
+    MEM_FREE=$(free -b | awk '/^Mem:/ {print $4}')
+    MEM_AVAILABLE=$(free -b | awk '/^Mem:/ {print $7}')
+    
+    MEM_PERCENT=$(awk "BEGIN {printf \"%.1f\", ($MEM_USED/$MEM_TOTAL)*100}")
+    
+    echo "Memory Utilization: ${MEM_PERCENT}%"
+    echo "Total: $(bytes_to_human $MEM_TOTAL)"
+    echo "Used: $(bytes_to_human $MEM_USED)"
+    echo "Available: $(bytes_to_human $MEM_AVAILABLE)"
+    
+    if (( $(echo "$MEM_PERCENT > 90" | bc -l) )); then
+        echo -e "${RED}⚠️  WARNING: Memory usage is critically high (>90%)${NC}"
+    elif (( $(echo "$MEM_PERCENT > 70" | bc -l) )); then
+        echo -e "${YELLOW}⚠️  CAUTION: Memory usage is high (>70%)${NC}"
+    else
+        echo -e "${GREEN}✓ Memory usage is acceptable${NC}"
+    fi
+fi
+echo
+
+# 2. TOP MEMORY CONSUMERS
+echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo -e "${BLUE}🔍 TOP 15 MEMORY CONSUMING PROCESSES${NC}"
+echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo
+ps aux --sort=-%mem | head -16 | awk 'NR==1 {print $0} NR>1 {printf "%-8s %5s%% %7s %s\n", $1, $4, $6/1024"M", $11}'
+echo
+
+# 3. POSTGRESQL PROCESSES
+echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo -e "${BLUE}🐘 POSTGRESQL PROCESSES${NC}"
+echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo
+
+PG_PROCS=$(ps aux | grep -E "postgres.*:" | grep -v grep || true)
+if [ -z "$PG_PROCS" ]; then
+    echo "No PostgreSQL processes found"
+else
+    echo "$PG_PROCS" | awk '{printf "%-8s %5s%% %7s %s\n", $1, $4, $6/1024"M", $11}'
+    echo
+    
+    # Sum up PostgreSQL memory
+    PG_MEM_TOTAL=$(echo "$PG_PROCS" | awk '{sum+=$6} END {print sum/1024}')
+    echo "Total PostgreSQL Memory: ${PG_MEM_TOTAL} MB"
+fi
+echo
+
+# 4. POSTGRESQL CONFIGURATION
+echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo -e "${BLUE}⚙️  POSTGRESQL MEMORY CONFIGURATION${NC}"
+echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo
+
+if command -v psql &> /dev/null; then
+    PSQL_CMD="psql -t -A -c"
+    
+    # Try as postgres user first, then current user
+    if sudo -u postgres $PSQL_CMD "SELECT 1" &> /dev/null; then
+        PSQL_PREFIX="sudo -u postgres"
+    elif $PSQL_CMD "SELECT 1" &> /dev/null; then
+        PSQL_PREFIX=""
+    else
+        echo "❌ Cannot connect to PostgreSQL"
+        PSQL_PREFIX="NONE"
+    fi
+    
+    if [ "$PSQL_PREFIX" != "NONE" ]; then
+        echo "Key Memory Settings:"
+        echo "────────────────────────────────────────────────────────────"
+        
+        # Get all relevant settings (strip timing output)
+        SHARED_BUFFERS=$($PSQL_PREFIX psql -t -A -c "SHOW shared_buffers;" 2>/dev/null | head -1 || echo "unknown")
+        WORK_MEM=$($PSQL_PREFIX psql -t -A -c "SHOW work_mem;" 2>/dev/null | head -1 || echo "unknown")
+        MAINT_WORK_MEM=$($PSQL_PREFIX psql -t -A -c "SHOW maintenance_work_mem;" 2>/dev/null | head -1 || echo "unknown")
+        EFFECTIVE_CACHE=$($PSQL_PREFIX psql -t -A -c "SHOW effective_cache_size;" 2>/dev/null | head -1 || echo "unknown")
+        MAX_CONNECTIONS=$($PSQL_PREFIX psql -t -A -c "SHOW max_connections;" 2>/dev/null | head -1 || echo "unknown")
+        MAX_LOCKS=$($PSQL_PREFIX psql -t -A -c "SHOW max_locks_per_transaction;" 2>/dev/null | head -1 || echo "unknown")
+        MAX_PREPARED=$($PSQL_PREFIX psql -t -A -c "SHOW max_prepared_transactions;" 2>/dev/null | head -1 || echo "unknown")
+        
+        echo "shared_buffers:               $SHARED_BUFFERS"
+        echo "work_mem:                     $WORK_MEM"
+        echo "maintenance_work_mem:         $MAINT_WORK_MEM"
+        echo "effective_cache_size:         $EFFECTIVE_CACHE"
+        echo "max_connections:              $MAX_CONNECTIONS"
+        echo "max_locks_per_transaction:    $MAX_LOCKS"
+        echo "max_prepared_transactions:    $MAX_PREPARED"
+        echo
+        
+        # Calculate lock capacity
+        if [ "$MAX_LOCKS" != "unknown" ] && [ "$MAX_CONNECTIONS" != "unknown" ] && [ "$MAX_PREPARED" != "unknown" ]; then
+            # Ensure values are numeric
+            if [[ "$MAX_LOCKS" =~ ^[0-9]+$ ]] && [[ "$MAX_CONNECTIONS" =~ ^[0-9]+$ ]] && [[ "$MAX_PREPARED" =~ ^[0-9]+$ ]]; then
+                LOCK_CAPACITY=$((MAX_LOCKS * (MAX_CONNECTIONS + MAX_PREPARED)))
+                echo "Total Lock Capacity: $LOCK_CAPACITY locks"
+            
+                if [ "$MAX_LOCKS" -lt 1000 ]; then
+                    echo -e "${RED}⚠️  WARNING: max_locks_per_transaction is too low for large restores${NC}"
+                    echo -e "${YELLOW}   Recommended: 4096 or higher${NC}"
+                fi
+            fi
+        fi
+        echo
+    fi
+else
+    echo "❌ psql not found"
+fi
+
+# 5. CURRENT LOCKS AND CONNECTIONS
+echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo -e "${BLUE}🔒 CURRENT LOCKS AND CONNECTIONS${NC}"
+echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo
+
+if [ "$PSQL_PREFIX" != "NONE" ] && command -v psql &> /dev/null; then
+    # Active connections
+    ACTIVE_CONNS=$($PSQL_PREFIX psql -t -A -c "SELECT count(*) FROM pg_stat_activity;" 2>/dev/null | head -1 || echo "0")
+    echo "Active Connections: $ACTIVE_CONNS / $MAX_CONNECTIONS"
+    echo
+    
+    # Lock statistics
+    echo "Current Lock Usage:"
+    echo "────────────────────────────────────────────────────────────"
+    $PSQL_PREFIX psql -c "
+        SELECT 
+            mode,
+            COUNT(*) as count
+        FROM pg_locks
+        GROUP BY mode
+        ORDER BY count DESC;
+    " 2>/dev/null || echo "Unable to query locks"
+    echo
+    
+    # Total locks
+    TOTAL_LOCKS=$($PSQL_PREFIX psql -t -A -c "SELECT COUNT(*) FROM pg_locks;" 2>/dev/null | head -1 || echo "0")
+    echo "Total Active Locks: $TOTAL_LOCKS"
+    
+    if [ ! -z "$LOCK_CAPACITY" ] && [ ! -z "$TOTAL_LOCKS" ] && [[ "$TOTAL_LOCKS" =~ ^[0-9]+$ ]] && [ "$TOTAL_LOCKS" -gt 0 ] 2>/dev/null; then
+        LOCK_PERCENT=$((TOTAL_LOCKS * 100 / LOCK_CAPACITY))
+        echo "Lock Usage: ${LOCK_PERCENT}%"
+        
+        if [ "$LOCK_PERCENT" -gt 80 ]; then
+            echo -e "${RED}⚠️  WARNING: Lock table usage is critically high${NC}"
+        elif [ "$LOCK_PERCENT" -gt 60 ]; then
+            echo -e "${YELLOW}⚠️  CAUTION: Lock table usage is elevated${NC}"
+        fi
+    fi
+    echo
+    
+    # Blocking queries
+    echo "Blocking Queries:"
+    echo "────────────────────────────────────────────────────────────"
+    $PSQL_PREFIX psql -c "
+        SELECT 
+            blocked_locks.pid AS blocked_pid,
+            blocking_locks.pid AS blocking_pid,
+            blocked_activity.usename AS blocked_user,
+            blocking_activity.usename AS blocking_user,
+            blocked_activity.query AS blocked_query
+        FROM pg_catalog.pg_locks blocked_locks
+        JOIN pg_catalog.pg_stat_activity blocked_activity ON blocked_activity.pid = blocked_locks.pid
+        JOIN pg_catalog.pg_locks blocking_locks 
+            ON blocking_locks.locktype = blocked_locks.locktype
+            AND blocking_locks.relation IS NOT DISTINCT FROM blocked_locks.relation
+            AND blocking_locks.page IS NOT DISTINCT FROM blocked_locks.page
+            AND blocking_locks.tuple IS NOT DISTINCT FROM blocked_locks.tuple
+            AND blocking_locks.virtualxid IS NOT DISTINCT FROM blocked_locks.virtualxid
+            AND blocking_locks.transactionid IS NOT DISTINCT FROM blocked_locks.transactionid
+            AND blocking_locks.classid IS NOT DISTINCT FROM blocked_locks.classid
+            AND blocking_locks.objid IS NOT DISTINCT FROM blocked_locks.objid
+            AND blocking_locks.objsubid IS NOT DISTINCT FROM blocked_locks.objsubid
+            AND blocking_locks.pid != blocked_locks.pid
+        JOIN pg_catalog.pg_stat_activity blocking_activity ON blocking_activity.pid = blocking_locks.pid
+        WHERE NOT blocked_locks.granted;
+    " 2>/dev/null || echo "No blocking queries or unable to query"
+    echo
+fi
+
+# 6. SHARED MEMORY USAGE
+echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo -e "${BLUE}💾 SHARED MEMORY SEGMENTS${NC}"
+echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo
+
+if command -v ipcs &> /dev/null; then
+    ipcs -m
+    echo
+    
+    # Sum up shared memory
+    TOTAL_SHM=$(ipcs -m | awk '/^0x/ {sum+=$5} END {print sum}')
+    if [ ! -z "$TOTAL_SHM" ]; then
+        echo "Total Shared Memory: $(bytes_to_human $TOTAL_SHM)"
+    fi
+else
+    echo "ipcs command not available"
+fi
+echo
+
+# 7. DISK SPACE (relevant for temp files)
+echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo -e "${BLUE}💿 DISK SPACE${NC}"
+echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo
+
+df -h | grep -E "Filesystem|/$|/var|/tmp|/postgres"
+echo
+
+# Check for PostgreSQL temp files
+if [ "$PSQL_PREFIX" != "NONE" ] && command -v psql &> /dev/null; then
+    TEMP_FILES=$($PSQL_PREFIX psql -t -A -c "SELECT count(*) FROM pg_stat_database WHERE temp_files > 0;" 2>/dev/null | head -1 || echo "0")
+    if [ ! -z "$TEMP_FILES" ] && [ "$TEMP_FILES" -gt 0 ] 2>/dev/null; then
+        echo -e "${YELLOW}⚠️  Databases are using temporary files (work_mem may be too low)${NC}"
+        $PSQL_PREFIX psql -c "SELECT datname, temp_files, pg_size_pretty(temp_bytes) as temp_size FROM pg_stat_database WHERE temp_files > 0;" 2>/dev/null
+        echo
+    fi
+fi
+
+# 8. OTHER RESOURCE CONSUMERS
+echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo -e "${BLUE}🔍 OTHER POTENTIAL MEMORY CONSUMERS${NC}"
+echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo
+
+# Check for common memory hogs
+echo "Checking for common memory-intensive services..."
+echo
+
+for service in "mysqld" "mongodb" "redis" "elasticsearch" "java" "docker" "containerd"; do
+    MEM=$(ps aux | grep "$service" | grep -v grep | awk '{sum+=$4} END {printf "%.1f", sum}')
+    if [ ! -z "$MEM" ] && (( $(echo "$MEM > 0" | bc -l) )); then
+        echo "  ${service}: ${MEM}%"
+    fi
+done
+echo
+
+# 9. SWAP USAGE
+echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo -e "${BLUE}🔄 SWAP USAGE${NC}"
+echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo
+
+if command -v free &> /dev/null; then
+    SWAP_TOTAL=$(free -b | awk '/^Swap:/ {print $2}')
+    SWAP_USED=$(free -b | awk '/^Swap:/ {print $3}')
+    
+    if [ "$SWAP_TOTAL" -gt 0 ]; then
+        SWAP_PERCENT=$(awk "BEGIN {printf \"%.1f\", ($SWAP_USED/$SWAP_TOTAL)*100}")
+        echo "Swap Total: $(bytes_to_human $SWAP_TOTAL)"
+        echo "Swap Used: $(bytes_to_human $SWAP_USED) (${SWAP_PERCENT}%)"
+        
+        if (( $(echo "$SWAP_PERCENT > 50" | bc -l) )); then
+            echo -e "${RED}⚠️  WARNING: Heavy swap usage detected - system may be thrashing${NC}"
+        elif (( $(echo "$SWAP_PERCENT > 20" | bc -l) )); then
+            echo -e "${YELLOW}⚠️  CAUTION: System is using swap${NC}"
+        else
+            echo -e "${GREEN}✓ Swap usage is low${NC}"
+        fi
+    else
+        echo "No swap configured"
+    fi
+fi
+echo
+
+# 10. RECOMMENDATIONS
+echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo -e "${BLUE}💡 RECOMMENDATIONS${NC}"
+echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo
+
+echo "Based on the diagnostics:"
+echo
+
+# Memory recommendations
+if [ ! -z "$MEM_PERCENT" ]; then
+    if (( $(echo "$MEM_PERCENT > 80" | bc -l) )); then
+        echo "1. ⚠️  Memory Pressure:"
+        echo "   • System memory is ${MEM_PERCENT}% utilized"
+        echo "   • Stop non-essential services before restore"
+        echo "   • Consider increasing system RAM"
+        echo "   • Use 'dbbackup restore --parallel=1' to reduce memory usage"
+        echo
+    fi
+fi
+
+# Lock recommendations
+if [ "$MAX_LOCKS" != "unknown" ] && [ ! -z "$MAX_LOCKS" ] && [[ "$MAX_LOCKS" =~ ^[0-9]+$ ]]; then
+    if [ "$MAX_LOCKS" -lt 1000 ] 2>/dev/null; then
+        echo "2. ⚠️  Lock Configuration:"
+        echo "   • max_locks_per_transaction is too low: $MAX_LOCKS"
+        echo "   • Run: ./fix_postgres_locks.sh"
+        echo "   • Or manually: ALTER SYSTEM SET max_locks_per_transaction = 4096;"
+        echo "   • Then restart PostgreSQL"
+        echo
+    fi
+fi
+
+# Other recommendations
+echo "3. 🔧 Before Large Restores:"
+echo "   • Stop unnecessary services (web servers, cron jobs, etc.)"
+echo "   • Clear PostgreSQL idle connections"
+echo "   • Ensure adequate disk space for temp files"
+echo "   • Consider using --large-db mode for very large databases"
+echo
+
+echo "4. 📊 Monitor During Restore:"
+echo "   • Watch: watch -n 2 'ps aux | grep postgres | head -20'"
+echo "   • Locks: watch -n 5 'psql -c \"SELECT COUNT(*) FROM pg_locks;\"'"
+echo "   • Memory: watch -n 2 free -h"
+echo
+
+echo "════════════════════════════════════════════════════════════"
+echo "  Report generated: $(date '+%Y-%m-%d %H:%M:%S')"
+echo "  Save this output: $0 > diagnosis_$(date +%Y%m%d_%H%M%S).log"
+echo "════════════════════════════════════════════════════════════"

email_infra_team.txt

@@ -0,0 +1,112 @@
+Betreff: PostgreSQL Restore Fehler - "out of shared memory" auf RST Server
+
+Hallo Infra-Team,
+
+wir haben auf dem RST PostgreSQL Server (PostgreSQL 17.4) wiederholt Restore-Fehler mit "out of shared memory" Meldungen.
+
+═══════════════════════════════════════════════════════════
+ANALYSE (Stand: 20.01.2026)
+═══════════════════════════════════════════════════════════
+
+Server-Specs:
+• RAM: 31 GB (aktuell 19.6 GB belegt = 63.9%)
+• PostgreSQL nutzt nur ~118 MB für eigene Prozesse
+• Swap: 4 GB (6.4% genutzt)
+
+Lock-Konfiguration:
+• max_locks_per_transaction: 4096 ✓ (bereits korrekt)
+• max_connections: 100
+• Lock Capacity: 409.600 ✓ (ausreichend)
+
+═══════════════════════════════════════════════════════════
+PROBLEM-IDENTIFIKATION
+═══════════════════════════════════════════════════════════
+
+1. MEMORY CONSUMER (nicht-PostgreSQL):
+   • Nessus Agent:      ~173 MB
+   • Elastic Agent:     ~300 MB (mehrere Komponenten)
+   • Icinga:            ~24 MB
+   • Weitere Monitoring: ~100+ MB
+
+2. WORK_MEM ZU NIEDRIG:
+   • Aktuell: 64 MB
+   • 4 Datenbanken nutzen Temp-Files (Indikator für zu wenig work_mem):
+     - prodkc:    201 MB temp files
+     - keycloak:   45 MB temp files
+     - d7030:       6 MB temp files
+     - pgbench_db:  2 MB temp files
+
+═══════════════════════════════════════════════════════════
+EMPFOHLENE MASSNAHMEN
+═══════════════════════════════════════════════════════════
+
+VARIANTE A - Temporär für große Restores:
+-------------------------------------------
+1. Monitoring-Agents stoppen (frei: ~500 MB):
+   sudo systemctl stop nessus-agent
+   sudo systemctl stop elastic-agent
+
+2. work_mem erhöhen:
+   sudo -u postgres psql -c "ALTER SYSTEM SET work_mem = '256MB';"
+   sudo systemctl restart postgresql
+
+3. Restore durchführen
+
+4. Agents wieder starten:
+   sudo systemctl start nessus-agent
+   sudo systemctl start elastic-agent
+
+
+VARIANTE B - Permanente Lösung:
+-------------------------------------------
+1. work_mem auf 256 MB erhöhen (statt 64 MB)
+2. maintenance_work_mem optional auf 4 GB erhöhen (statt 2 GB)
+3. Falls möglich: Monitoring auf dedizierten Server verschieben
+
+SQL-Befehle:
+   ALTER SYSTEM SET work_mem = '256MB';
+   ALTER SYSTEM SET maintenance_work_mem = '4GB';
+   -- Anschließend PostgreSQL restart
+
+
+VARIANTE C - Falls keine Config-Änderung möglich:
+-------------------------------------------
+• Restore mit --profile=conservative durchführen (reduziert Memory-Druck)
+  dbbackup restore cluster backup.tar.gz --profile=conservative --confirm
+
+• Oder TUI-Modus nutzen (verwendet automatisch conservative profile):
+  dbbackup interactive
+
+• Monitoring während Restore-Fenster deaktivieren
+
+═══════════════════════════════════════════════════════════
+DETAIL-REPORT
+═══════════════════════════════════════════════════════════
+
+Vollständiger Diagnose-Report liegt bei bzw. kann jederzeit mit
+diesem Script generiert werden:
+
+  /path/to/diagnose_postgres_memory.sh
+
+Das Script analysiert:
+• System Memory Usage
+• PostgreSQL Konfiguration
+• Lock Usage
+• Temp File Usage
+• Blocking Queries
+• Shared Memory Segments
+
+═══════════════════════════════════════════════════════════
+
+Bevorzugt wäre Variante B (permanente work_mem Erhöhung), damit künftige
+große Restores ohne manuelle Eingriffe durchlaufen.
+
+Bitte um Rückmeldung, welche Variante ihr umsetzt bzw. ob ihr weitere
+Infos benötigt.
+
+Danke & Grüße
+[Dein Name]
+
+---
+Anhang: diagnose_postgres_memory.sh (falls nicht vorhanden)
+Error Log: /a01/dba/tmp/dbbackup-restore-debug-20260119-221730.json

fix_postgres_locks.sh

@@ -0,0 +1,140 @@
+#!/bin/bash
+#
+# Fix PostgreSQL Lock Table Exhaustion
+# Increases max_locks_per_transaction to handle large database restores
+#
+
+set -e
+
+echo "════════════════════════════════════════════════════════════"
+echo "  PostgreSQL Lock Configuration Fix"
+echo "════════════════════════════════════════════════════════════"
+echo
+
+# Check if running as postgres user or with sudo
+if [ "$EUID" -ne 0 ] && [ "$(whoami)" != "postgres" ]; then
+    echo "⚠️  This script should be run as:"
+    echo "   sudo $0"
+    echo "   or as the postgres user"
+    echo
+    read -p "Continue anyway? (y/N) " -n 1 -r
+    echo
+    if [[ ! $REPLY =~ ^[Yy]$ ]]; then
+        exit 1
+    fi
+fi
+
+# Detect PostgreSQL version and config
+PSQL=$(command -v psql || echo "")
+if [ -z "$PSQL" ]; then
+    echo "❌ psql not found in PATH"
+    exit 1
+fi
+
+echo "📊 Current PostgreSQL Configuration:"
+echo "────────────────────────────────────────────────────────────"
+sudo -u postgres psql -c "SHOW max_locks_per_transaction;" 2>/dev/null || psql -c "SHOW max_locks_per_transaction;" || echo "Unable to query current value"
+sudo -u postgres psql -c "SHOW max_connections;" 2>/dev/null || psql -c "SHOW max_connections;" || echo "Unable to query current value"
+sudo -u postgres psql -c "SHOW work_mem;" 2>/dev/null || psql -c "SHOW work_mem;" || echo "Unable to query current value"
+sudo -u postgres psql -c "SHOW maintenance_work_mem;" 2>/dev/null || psql -c "SHOW maintenance_work_mem;" || echo "Unable to query current value"
+echo
+
+# Recommended values
+RECOMMENDED_LOCKS=4096
+RECOMMENDED_WORK_MEM="256MB"
+RECOMMENDED_MAINTENANCE_WORK_MEM="4GB"
+
+echo "🔧 Applying Fixes:"
+echo "────────────────────────────────────────────────────────────"
+echo "1. Setting max_locks_per_transaction = $RECOMMENDED_LOCKS"
+echo "2. Setting work_mem = $RECOMMENDED_WORK_MEM (improves query performance)"
+echo "3. Setting maintenance_work_mem = $RECOMMENDED_MAINTENANCE_WORK_MEM (speeds up restore/vacuum)"
+echo
+
+# Apply the settings
+SUCCESS=0
+
+# Fix 1: max_locks_per_transaction
+if sudo -u postgres psql -c "ALTER SYSTEM SET max_locks_per_transaction = $RECOMMENDED_LOCKS;" 2>/dev/null; then
+    echo "✅ max_locks_per_transaction updated successfully"
+    SUCCESS=$((SUCCESS + 1))
+elif psql -c "ALTER SYSTEM SET max_locks_per_transaction = $RECOMMENDED_LOCKS;" 2>/dev/null; then
+    echo "✅ max_locks_per_transaction updated successfully"
+    SUCCESS=$((SUCCESS + 1))
+else
+    echo "❌ Failed to update max_locks_per_transaction"
+fi
+
+# Fix 2: work_mem
+if sudo -u postgres psql -c "ALTER SYSTEM SET work_mem = '$RECOMMENDED_WORK_MEM';" 2>/dev/null; then
+    echo "✅ work_mem updated successfully"
+    SUCCESS=$((SUCCESS + 1))
+elif psql -c "ALTER SYSTEM SET work_mem = '$RECOMMENDED_WORK_MEM';" 2>/dev/null; then
+    echo "✅ work_mem updated successfully"
+    SUCCESS=$((SUCCESS + 1))
+else
+    echo "❌ Failed to update work_mem"
+fi
+
+# Fix 3: maintenance_work_mem
+if sudo -u postgres psql -c "ALTER SYSTEM SET maintenance_work_mem = '$RECOMMENDED_MAINTENANCE_WORK_MEM';" 2>/dev/null; then
+    echo "✅ maintenance_work_mem updated successfully"
+    SUCCESS=$((SUCCESS + 1))
+elif psql -c "ALTER SYSTEM SET maintenance_work_mem = '$RECOMMENDED_MAINTENANCE_WORK_MEM';" 2>/dev/null; then
+    echo "✅ maintenance_work_mem updated successfully"
+    SUCCESS=$((SUCCESS + 1))
+else
+    echo "❌ Failed to update maintenance_work_mem"
+fi
+
+if [ $SUCCESS -eq 0 ]; then
+    echo
+    echo "❌ All configuration updates failed"
+    echo
+    echo "Manual steps:"
+    echo "1. Connect to PostgreSQL as superuser:"
+    echo "   sudo -u postgres psql"
+    echo
+    echo "2. Run these commands:"
+    echo "   ALTER SYSTEM SET max_locks_per_transaction = $RECOMMENDED_LOCKS;"
+    echo "   ALTER SYSTEM SET work_mem = '$RECOMMENDED_WORK_MEM';"
+    echo "   ALTER SYSTEM SET maintenance_work_mem = '$RECOMMENDED_MAINTENANCE_WORK_MEM';"
+    echo
+    exit 1
+fi
+
+echo
+echo "✅ Applied $SUCCESS out of 3 configuration changes"
+
+echo
+echo "⚠️  IMPORTANT: PostgreSQL restart required!"
+echo "────────────────────────────────────────────────────────────"
+echo
+echo "Restart PostgreSQL using one of these commands:"
+echo
+echo "  • systemd:     sudo systemctl restart postgresql"
+echo "  • pg_ctl:      sudo -u postgres pg_ctl restart -D /var/lib/postgresql/data"
+echo "  • service:     sudo service postgresql restart"
+echo
+echo "📊 Expected capacity after restart:"
+echo "────────────────────────────────────────────────────────────"
+echo "  Lock capacity: max_locks_per_transaction × (max_connections + max_prepared)"
+echo "                 = $RECOMMENDED_LOCKS × (connections + prepared)"
+echo
+echo "  Work memory:   $RECOMMENDED_WORK_MEM per query operation"
+echo "  Maintenance:   $RECOMMENDED_MAINTENANCE_WORK_MEM for restore/vacuum/index"
+echo
+echo "After restarting, verify with:"
+echo "  psql -c 'SHOW max_locks_per_transaction;'"
+echo "  psql -c 'SHOW work_mem;'"
+echo "  psql -c 'SHOW maintenance_work_mem;'"
+echo
+echo "💡 Benefits:"
+echo "  ✓ Prevents 'out of shared memory' errors during restore"
+echo "  ✓ Reduces temp file usage (better performance)"
+echo "  ✓ Faster restore, vacuum, and index operations"
+echo
+echo "🔍 For comprehensive diagnostics, run:"
+echo "  ./diagnose_postgres_memory.sh"
+echo
+echo "════════════════════════════════════════════════════════════"

go.mod

@@ -5,15 +5,27 @@ go 1.24.0
 toolchain go1.24.9
 
 require (
-	github.com/Netflix/go-expect v0.0.0-20220104043353-73e0943537d2
+	cloud.google.com/go/storage v1.57.2
+	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.20.0
+	github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.3
+	github.com/aws/aws-sdk-go-v2 v1.40.0
+	github.com/aws/aws-sdk-go-v2/config v1.32.2
+	github.com/aws/aws-sdk-go-v2/credentials v1.19.2
+	github.com/aws/aws-sdk-go-v2/feature/s3/manager v1.20.12
+	github.com/aws/aws-sdk-go-v2/service/s3 v1.92.1
 	github.com/charmbracelet/bubbles v0.21.0
 	github.com/charmbracelet/bubbletea v1.3.10
 	github.com/charmbracelet/lipgloss v1.1.0
+	github.com/dustin/go-humanize v1.0.1
 	github.com/go-sql-driver/mysql v1.9.3
 	github.com/jackc/pgx/v5 v5.7.6
+	github.com/mattn/go-sqlite3 v1.14.32
+	github.com/shirou/gopsutil/v3 v3.24.5
 	github.com/sirupsen/logrus v1.9.3
 	github.com/spf13/cobra v1.10.1
 	github.com/spf13/pflag v1.0.9
+	golang.org/x/crypto v0.43.0
+	google.golang.org/api v0.256.0
 )
 
 require (
@@ -24,20 +36,13 @@ require (
 	cloud.google.com/go/compute/metadata v0.9.0 // indirect
 	cloud.google.com/go/iam v1.5.2 // indirect
 	cloud.google.com/go/monitoring v1.24.2 // indirect
-	cloud.google.com/go/storage v1.57.2 // indirect
 	filippo.io/edwards25519 v1.1.0 // indirect
-	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.20.0 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.2 // indirect
-	github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.3 // indirect
 	github.com/GoogleCloudPlatform/opentelemetry-operations-go/detectors/gcp v1.29.0 // indirect
 	github.com/GoogleCloudPlatform/opentelemetry-operations-go/exporter/metric v0.53.0 // indirect
 	github.com/GoogleCloudPlatform/opentelemetry-operations-go/internal/resourcemapping v0.53.0 // indirect
-	github.com/aws/aws-sdk-go-v2 v1.40.0 // indirect
 	github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.3 // indirect
-	github.com/aws/aws-sdk-go-v2/config v1.32.2 // indirect
-	github.com/aws/aws-sdk-go-v2/credentials v1.19.2 // indirect
 	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.14 // indirect
-	github.com/aws/aws-sdk-go-v2/feature/s3/manager v1.20.12 // indirect
 	github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.14 // indirect
 	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.14 // indirect
 	github.com/aws/aws-sdk-go-v2/internal/ini v1.8.4 // indirect
@@ -46,47 +51,58 @@ require (
 	github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.9.5 // indirect
 	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.14 // indirect
 	github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.14 // indirect
-	github.com/aws/aws-sdk-go-v2/service/s3 v1.92.1 // indirect
 	github.com/aws/aws-sdk-go-v2/service/signin v1.0.2 // indirect
 	github.com/aws/aws-sdk-go-v2/service/sso v1.30.5 // indirect
 	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.35.10 // indirect
 	github.com/aws/aws-sdk-go-v2/service/sts v1.41.2 // indirect
 	github.com/aws/smithy-go v1.23.2 // indirect
 	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
+	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/charmbracelet/colorprofile v0.2.3-0.20250311203215-f60798e515dc // indirect
 	github.com/charmbracelet/x/ansi v0.10.1 // indirect
 	github.com/charmbracelet/x/cellbuf v0.0.13-0.20250311204145-2c3ea96c31dd // indirect
 	github.com/charmbracelet/x/term v0.2.1 // indirect
 	github.com/cncf/xds/go v0.0.0-20250501225837-2ac532fd4443 // indirect
-	github.com/creack/pty v1.1.17 // indirect
 	github.com/envoyproxy/go-control-plane/envoy v1.32.4 // indirect
 	github.com/envoyproxy/protoc-gen-validate v1.2.1 // indirect
 	github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f // indirect
+	github.com/fatih/color v1.18.0 // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
 	github.com/go-jose/go-jose/v4 v4.1.2 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/go-ole/go-ole v1.2.6 // indirect
 	github.com/google/s2a-go v0.1.9 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/googleapis/enterprise-certificate-proxy v0.3.7 // indirect
 	github.com/googleapis/gax-go/v2 v2.15.0 // indirect
+	github.com/hashicorp/errwrap v1.0.0 // indirect
+	github.com/hashicorp/go-multierror v1.1.1 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/jackc/pgpassfile v1.0.0 // indirect
 	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
 	github.com/jackc/puddle/v2 v2.2.2 // indirect
 	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
+	github.com/lufia/plan9stats v0.0.0-20211012122336-39d0f177ccd0 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mattn/go-localereader v0.0.1 // indirect
 	github.com/mattn/go-runewidth v0.0.16 // indirect
-	github.com/mattn/go-sqlite3 v1.14.32 // indirect
+	github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db // indirect
 	github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 // indirect
 	github.com/muesli/cancelreader v0.2.2 // indirect
 	github.com/muesli/termenv v0.16.0 // indirect
 	github.com/planetscale/vtprotobuf v0.6.1-0.20240319094008-0393e58bdf10 // indirect
+	github.com/power-devops/perfstat v0.0.0-20210106213030-5aafc221ea8c // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
+	github.com/schollz/progressbar/v3 v3.19.0 // indirect
+	github.com/spf13/afero v1.15.0 // indirect
 	github.com/spiffe/go-spiffe/v2 v2.5.0 // indirect
+	github.com/tklauser/go-sysconf v0.3.12 // indirect
+	github.com/tklauser/numcpus v0.6.1 // indirect
 	github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect
+	github.com/yusufpapurcu/wmi v1.2.4 // indirect
 	github.com/zeebo/errs v1.4.0 // indirect
 	go.opentelemetry.io/auto/sdk v1.1.0 // indirect
 	go.opentelemetry.io/contrib/detectors/gcp v1.36.0 // indirect
@@ -97,14 +113,13 @@ require (
 	go.opentelemetry.io/otel/sdk v1.37.0 // indirect
 	go.opentelemetry.io/otel/sdk/metric v1.37.0 // indirect
 	go.opentelemetry.io/otel/trace v1.37.0 // indirect
-	golang.org/x/crypto v0.43.0 // indirect
 	golang.org/x/net v0.46.0 // indirect
 	golang.org/x/oauth2 v0.33.0 // indirect
 	golang.org/x/sync v0.18.0 // indirect
 	golang.org/x/sys v0.38.0 // indirect
+	golang.org/x/term v0.36.0 // indirect
 	golang.org/x/text v0.30.0 // indirect
 	golang.org/x/time v0.14.0 // indirect
-	google.golang.org/api v0.256.0 // indirect
 	google.golang.org/genproto v0.0.0-20250603155806-513f23925822 // indirect
 	google.golang.org/genproto/googleapis/api v0.0.0-20250818200422-3122310a409c // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20251103181224-f26f9409b101 // indirect

go.sum

@@ -10,36 +10,44 @@ cloud.google.com/go/compute/metadata v0.9.0 h1:pDUj4QMoPejqq20dK0Pg2N4yG9zIkYGdB
 cloud.google.com/go/compute/metadata v0.9.0/go.mod h1:E0bWwX5wTnLPedCKqk3pJmVgCBSM6qQI1yTBdEb3C10=
 cloud.google.com/go/iam v1.5.2 h1:qgFRAGEmd8z6dJ/qyEchAuL9jpswyODjA2lS+w234g8=
 cloud.google.com/go/iam v1.5.2/go.mod h1:SE1vg0N81zQqLzQEwxL2WI6yhetBdbNQuTvIKCSkUHE=
+cloud.google.com/go/logging v1.13.0 h1:7j0HgAp0B94o1YRDqiqm26w4q1rDMH7XNRU34lJXHYc=
+cloud.google.com/go/logging v1.13.0/go.mod h1:36CoKh6KA/M0PbhPKMq6/qety2DCAErbhXT62TuXALA=
+cloud.google.com/go/longrunning v0.7.0 h1:FV0+SYF1RIj59gyoWDRi45GiYUMM3K1qO51qoboQT1E=
+cloud.google.com/go/longrunning v0.7.0/go.mod h1:ySn2yXmjbK9Ba0zsQqunhDkYi0+9rlXIwnoAf+h+TPY=
 cloud.google.com/go/monitoring v1.24.2 h1:5OTsoJ1dXYIiMiuL+sYscLc9BumrL3CarVLL7dd7lHM=
 cloud.google.com/go/monitoring v1.24.2/go.mod h1:x7yzPWcgDRnPEv3sI+jJGBkwl5qINf+6qY4eq0I9B4U=
 cloud.google.com/go/storage v1.57.2 h1:sVlym3cHGYhrp6XZKkKb+92I1V42ks2qKKpB0CF5Mb4=
 cloud.google.com/go/storage v1.57.2/go.mod h1:n5ijg4yiRXXpCu0sJTD6k+eMf7GRrJmPyr9YxLXGHOk=
+cloud.google.com/go/trace v1.11.6 h1:2O2zjPzqPYAHrn3OKl029qlqG6W8ZdYaOWRyr8NgMT4=
+cloud.google.com/go/trace v1.11.6/go.mod h1:GA855OeDEBiBMzcckLPE2kDunIpC72N+Pq8WFieFjnI=
 filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
 filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
 github.com/Azure/azure-sdk-for-go/sdk/azcore v1.20.0 h1:JXg2dwJUmPB9JmtVmdEB16APJ7jurfbY5jnfXpJoRMc=
 github.com/Azure/azure-sdk-for-go/sdk/azcore v1.20.0/go.mod h1:YD5h/ldMsG0XiIw7PdyNhLxaM317eFh5yNLccNfGdyw=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.13.0 h1:KpMC6LFL7mqpExyMC9jVOYRiVhLmamjeZfRsUpB7l4s=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.13.0/go.mod h1:J7MUC/wtRpfGVbQ5sIItY5/FuVWmvzlY21WAOfQnq/I=
 github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.2 h1:9iefClla7iYpfYWdzPCRDozdmndjTm8DXdpCzPajMgA=
 github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.2/go.mod h1:XtLgD3ZD34DAaVIIAyG3objl5DynM3CQ/vMcbBNJZGI=
+github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/storage/armstorage v1.8.1 h1:/Zt+cDPnpC3OVDm/JKLOs7M2DKmLRIIp3XIx9pHHiig=
+github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/storage/armstorage v1.8.1/go.mod h1:Ng3urmn6dYe8gnbCMoHHVl5APYz2txho3koEkV2o2HA=
 github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.3 h1:ZJJNFaQ86GVKQ9ehwqyAFE6pIfyicpuJ8IkVaPBc6/4=
 github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.3/go.mod h1:URuDvhmATVKqHBH9/0nOiNKk0+YcwfQ3WkK5PqHKxc8=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.5.0 h1:XkkQbfMyuH2jTSjQjSoihryI8GINRcs4xp8lNawg0FI=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.5.0/go.mod h1:HKpQxkWaGLJ+D/5H8QRpyQXA1eKjxkFlOMwck5+33Jk=
 github.com/GoogleCloudPlatform/opentelemetry-operations-go/detectors/gcp v1.29.0 h1:UQUsRi8WTzhZntp5313l+CHIAT95ojUI2lpP/ExlZa4=
 github.com/GoogleCloudPlatform/opentelemetry-operations-go/detectors/gcp v1.29.0/go.mod h1:Cz6ft6Dkn3Et6l2v2a9/RpN7epQ1GtDlO6lj8bEcOvw=
 github.com/GoogleCloudPlatform/opentelemetry-operations-go/exporter/metric v0.53.0 h1:owcC2UnmsZycprQ5RfRgjydWhuoxg71LUfyiQdijZuM=
 github.com/GoogleCloudPlatform/opentelemetry-operations-go/exporter/metric v0.53.0/go.mod h1:ZPpqegjbE99EPKsu3iUWV22A04wzGPcAY/ziSIQEEgs=
+github.com/GoogleCloudPlatform/opentelemetry-operations-go/internal/cloudmock v0.53.0 h1:4LP6hvB4I5ouTbGgWtixJhgED6xdf67twf9PoY96Tbg=
+github.com/GoogleCloudPlatform/opentelemetry-operations-go/internal/cloudmock v0.53.0/go.mod h1:jUZ5LYlw40WMd07qxcQJD5M40aUxrfwqQX1g7zxYnrQ=
 github.com/GoogleCloudPlatform/opentelemetry-operations-go/internal/resourcemapping v0.53.0 h1:Ron4zCA/yk6U7WOBXhTJcDpsUBG9npumK6xw2auFltQ=
 github.com/GoogleCloudPlatform/opentelemetry-operations-go/internal/resourcemapping v0.53.0/go.mod h1:cSgYe11MCNYunTnRXrKiR/tHc0eoKjICUuWpNZoVCOo=
-github.com/Netflix/go-expect v0.0.0-20220104043353-73e0943537d2 h1:+vx7roKuyA63nhn5WAunQHLTznkw5W8b1Xc0dNjp83s=
-github.com/Netflix/go-expect v0.0.0-20220104043353-73e0943537d2/go.mod h1:HBCaDeC1lPdgDeDbhX8XFpy1jqjK0IBG8W5K+xYqA0w=
 github.com/aws/aws-sdk-go-v2 v1.40.0 h1:/WMUA0kjhZExjOQN2z3oLALDREea1A7TobfuiBrKlwc=
 github.com/aws/aws-sdk-go-v2 v1.40.0/go.mod h1:c9pm7VwuW0UPxAEYGyTmyurVcNrbF6Rt/wixFqDhcjE=
 github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.3 h1:DHctwEM8P8iTXFxC/QK0MRjwEpWQeM9yzidCRjldUz0=
 github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.3/go.mod h1:xdCzcZEtnSTKVDOmUZs4l/j3pSV6rpo1WXl5ugNsL8Y=
-github.com/aws/aws-sdk-go-v2/config v1.32.1 h1:iODUDLgk3q8/flEC7ymhmxjfoAnBDwEEYEVyKZ9mzjU=
-github.com/aws/aws-sdk-go-v2/config v1.32.1/go.mod h1:xoAgo17AGrPpJBSLg81W+ikM0cpOZG8ad04T2r+d5P0=
 github.com/aws/aws-sdk-go-v2/config v1.32.2 h1:4liUsdEpUUPZs5WVapsJLx5NPmQhQdez7nYFcovrytk=
 github.com/aws/aws-sdk-go-v2/config v1.32.2/go.mod h1:l0hs06IFz1eCT+jTacU/qZtC33nvcnLADAPL/XyrkZI=
-github.com/aws/aws-sdk-go-v2/credentials v1.19.1 h1:JeW+EwmtTE0yXFK8SmklrFh/cGTTXsQJumgMZNlbxfM=
-github.com/aws/aws-sdk-go-v2/credentials v1.19.1/go.mod h1:BOoXiStwTF+fT2XufhO0Efssbi1CNIO/ZXpZu87N0pw=
 github.com/aws/aws-sdk-go-v2/credentials v1.19.2 h1:qZry8VUyTK4VIo5aEdUcBjPZHL2v4FyQ3QEOaWcFLu4=
 github.com/aws/aws-sdk-go-v2/credentials v1.19.2/go.mod h1:YUqm5a1/kBnoK+/NY5WEiMocZihKSo15/tJdmdXnM5g=
 github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.14 h1:WZVR5DbDgxzA0BJeudId89Kmgy6DIU4ORpxwsVHz0qA=
@@ -62,30 +70,22 @@ github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.14 h1:FIouAnCE
 github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.14/go.mod h1:UTwDc5COa5+guonQU8qBikJo1ZJ4ln2r1MkF7Dqag1E=
 github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.14 h1:FzQE21lNtUor0Fb7QNgnEyiRCBlolLTX/Z1j65S7teM=
 github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.14/go.mod h1:s1ydyWG9pm3ZwmmYN21HKyG9WzAZhYVW85wMHs5FV6w=
-github.com/aws/aws-sdk-go-v2/service/s3 v1.92.0 h1:8FshVvnV2sr9kOSAbOnc/vwVmmAwMjOedKH6JW2ddPM=
-github.com/aws/aws-sdk-go-v2/service/s3 v1.92.0/go.mod h1:wYNqY3L02Z3IgRYxOBPH9I1zD9Cjh9hI5QOy/eOjQvw=
 github.com/aws/aws-sdk-go-v2/service/s3 v1.92.1 h1:OgQy/+0+Kc3khtqiEOk23xQAglXi3Tj0y5doOxbi5tg=
 github.com/aws/aws-sdk-go-v2/service/s3 v1.92.1/go.mod h1:wYNqY3L02Z3IgRYxOBPH9I1zD9Cjh9hI5QOy/eOjQvw=
-github.com/aws/aws-sdk-go-v2/service/signin v1.0.1 h1:BDgIUYGEo5TkayOWv/oBLPphWwNm/A91AebUjAu5L5g=
-github.com/aws/aws-sdk-go-v2/service/signin v1.0.1/go.mod h1:iS6EPmNeqCsGo+xQmXv0jIMjyYtQfnwg36zl2FwEouk=
 github.com/aws/aws-sdk-go-v2/service/signin v1.0.2 h1:MxMBdKTYBjPQChlJhi4qlEueqB1p1KcbTEa7tD5aqPs=
 github.com/aws/aws-sdk-go-v2/service/signin v1.0.2/go.mod h1:iS6EPmNeqCsGo+xQmXv0jIMjyYtQfnwg36zl2FwEouk=
-github.com/aws/aws-sdk-go-v2/service/sso v1.30.4 h1:U//SlnkE1wOQiIImxzdY5PXat4Wq+8rlfVEw4Y7J8as=
-github.com/aws/aws-sdk-go-v2/service/sso v1.30.4/go.mod h1:av+ArJpoYf3pgyrj6tcehSFW+y9/QvAY8kMooR9bZCw=
 github.com/aws/aws-sdk-go-v2/service/sso v1.30.5 h1:ksUT5KtgpZd3SAiFJNJ0AFEJVva3gjBmN7eXUZjzUwQ=
 github.com/aws/aws-sdk-go-v2/service/sso v1.30.5/go.mod h1:av+ArJpoYf3pgyrj6tcehSFW+y9/QvAY8kMooR9bZCw=
-github.com/aws/aws-sdk-go-v2/service/ssooidc v1.35.9 h1:LU8S9W/mPDAU9q0FjCLi0TrCheLMGwzbRpvUMwYspcA=
-github.com/aws/aws-sdk-go-v2/service/ssooidc v1.35.9/go.mod h1:/j67Z5XBVDx8nZVp9EuFM9/BS5dvBznbqILGuu73hug=
 github.com/aws/aws-sdk-go-v2/service/ssooidc v1.35.10 h1:GtsxyiF3Nd3JahRBJbxLCCdYW9ltGQYrFWg8XdkGDd8=
 github.com/aws/aws-sdk-go-v2/service/ssooidc v1.35.10/go.mod h1:/j67Z5XBVDx8nZVp9EuFM9/BS5dvBznbqILGuu73hug=
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@@ -135,6 +153,10 @@ github.com/googleapis/enterprise-certificate-proxy v0.3.7 h1:zrn2Ee/nWmHulBx5sAV
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-github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
-github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
+github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
+github.com/tklauser/go-sysconf v0.3.12 h1:0QaGUFOdQaIVdPgfITYzaTegZvdCjmYO52cSFAEVmqU=
+github.com/tklauser/go-sysconf v0.3.12/go.mod h1:Ho14jnntGE1fpdOqQEEaiKRpvIavV0hSfmBq8nJbHYI=
+github.com/tklauser/numcpus v0.6.1 h1:ng9scYS7az0Bk4OZLvrNXNSAO2Pxr1XXRAPyjhIx+Fk=
+github.com/tklauser/numcpus v0.6.1/go.mod h1:1XfjsgE2zo8GVw7POkMbHENHzVg3GzmoZ9fESEdAacY=
 github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e h1:JVG44RsyaB9T2KIHavMF/ppJZNG9ZpyihvCd0w101no=
 github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e/go.mod h1:RbqR21r5mrJuqunuUZ/Dhy/avygyECGrLceyNeo4LiM=
+github.com/yusufpapurcu/wmi v1.2.4 h1:zFUKzehAFReQwLys1b/iSMl+JQGSCSjtVqQn9bBrPo0=
+github.com/yusufpapurcu/wmi v1.2.4/go.mod h1:SBZ9tNy3G9/m5Oi98Zks0QjeHVDvuK0qfxQmPyzfmi0=
 github.com/zeebo/errs v1.4.0 h1:XNdoD/RRMKP7HD0UhJnIzUy74ISdGGxURlYG8HSWSfM=
 github.com/zeebo/errs v1.4.0/go.mod h1:sgbWHsvVuTPHcqJJGQ1WhI5KbWlHYz+2+2C/LSEtCw4=
 go.opentelemetry.io/auto/sdk v1.1.0 h1:cH53jehLUN6UFLY71z+NDOiNJqDdPRaXzTel0sJySYA=
@@ -198,6 +244,8 @@ go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.61.0 h1:F7Jx+6h
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.61.0/go.mod h1:UHB22Z8QsdRDrnAtX4PntOl36ajSxcdUMt1sF7Y6E7Q=
 go.opentelemetry.io/otel v1.37.0 h1:9zhNfelUvx0KBfu/gb+ZgeAfAgtWrfHJZcAqFC228wQ=
 go.opentelemetry.io/otel v1.37.0/go.mod h1:ehE/umFRLnuLa/vSccNq9oS1ErUlkkK71gMcN34UG8I=
+go.opentelemetry.io/otel/exporters/stdout/stdoutmetric v1.36.0 h1:rixTyDGXFxRy1xzhKrotaHy3/KXdPhlWARrCgK+eqUY=
+go.opentelemetry.io/otel/exporters/stdout/stdoutmetric v1.36.0/go.mod h1:dowW6UsM9MKbJq5JTz2AMVp3/5iW5I/TStsk8S+CfHw=
 go.opentelemetry.io/otel/metric v1.37.0 h1:mvwbQS5m0tbmqML4NqK+e3aDiO02vsf/WgbsdpcPoZE=
 go.opentelemetry.io/otel/metric v1.37.0/go.mod h1:04wGrZurHYKOc+RKeye86GwKiTb9FKm1WHtO+4EVr2E=
 go.opentelemetry.io/otel/sdk v1.37.0 h1:ItB0QUqnjesGRvNcmAcU0LyvkVyGJ2xftD29bWdDvKI=
@@ -206,43 +254,35 @@ go.opentelemetry.io/otel/sdk/metric v1.37.0 h1:90lI228XrB9jCMuSdA0673aubgRobVZFh
 go.opentelemetry.io/otel/sdk/metric v1.37.0/go.mod h1:cNen4ZWfiD37l5NhS+Keb5RXVWZWpRE+9WyVCpbo5ps=
 go.opentelemetry.io/otel/trace v1.37.0 h1:HLdcFNbRQBE2imdSEgm/kwqmQj1Or1l/7bW6mxVK7z4=
 go.opentelemetry.io/otel/trace v1.37.0/go.mod h1:TlgrlQ+PtQO5XFerSPUYG0JSgGyryXewPGyayAWSBS0=
-golang.org/x/crypto v0.37.0 h1:kJNSjF/Xp7kU0iB2Z+9viTPMW4EqqsrywMXLJOOsXSE=
-golang.org/x/crypto v0.37.0/go.mod h1:vg+k43peMZ0pUMhYmVAWysMK35e6ioLh3wB8ZCAfbVc=
-golang.org/x/crypto v0.41.0 h1:WKYxWedPGCTVVl5+WHSSrOBT0O8lx32+zxmHxijgXp4=
-golang.org/x/crypto v0.41.0/go.mod h1:pO5AFd7FA68rFak7rOAGVuygIISepHftHnr8dr6+sUc=
 golang.org/x/crypto v0.43.0 h1:dduJYIi3A3KOfdGOHX8AVZ/jGiyPa3IbBozJ5kNuE04=
 golang.org/x/crypto v0.43.0/go.mod h1:BFbav4mRNlXJL4wNeejLpWxB7wMbc79PdRGhWKncxR0=
 golang.org/x/exp v0.0.0-20220909182711-5c715a9e8561 h1:MDc5xs78ZrZr3HMQugiXOAkSZtfTpbJLDr/lwfgO53E=
 golang.org/x/exp v0.0.0-20220909182711-5c715a9e8561/go.mod h1:cyybsKvd6eL0RnXn6p/Grxp8F5bW7iYuBgsNCOHpMYE=
-golang.org/x/net v0.43.0 h1:lat02VYK2j4aLzMzecihNvTlJNQUq316m2Mr9rnM6YE=
-golang.org/x/net v0.43.0/go.mod h1:vhO1fvI4dGsIjh73sWfUVjj3N7CA9WkKJNQm2svM6Jg=
 golang.org/x/net v0.46.0 h1:giFlY12I07fugqwPuWJi68oOnpfqFnJIJzaIIm2JVV4=
 golang.org/x/net v0.46.0/go.mod h1:Q9BGdFy1y4nkUwiLvT5qtyhAnEHgnQ/zd8PfU6nc210=
 golang.org/x/oauth2 v0.33.0 h1:4Q+qn+E5z8gPRJfmRy7C2gGG3T4jIprK6aSYgTXGRpo=
 golang.org/x/oauth2 v0.33.0/go.mod h1:lzm5WQJQwKZ3nwavOZ3IS5Aulzxi68dUSgRHujetwEA=
-golang.org/x/sync v0.13.0 h1:AauUjRAJ9OSnvULf/ARrrVywoJDy0YS2AwQ98I37610=
-golang.org/x/sync v0.13.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA=
-golang.org/x/sync v0.16.0 h1:ycBJEhp9p4vXvUZNszeOq0kGTPghopOL8q0fq3vstxw=
-golang.org/x/sync v0.16.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA=
 golang.org/x/sync v0.18.0 h1:kr88TuHDroi+UVf+0hZnirlk8o8T+4MrK6mr60WkH/I=
 golang.org/x/sync v0.18.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
+golang.org/x/sys v0.0.0-20190916202348-b4ddaad3f8a3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201204225414-ed752295db88/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.36.0 h1:KVRy2GtZBrk1cBYA7MKu5bEZFxQk4NIDV6RLVcC8o0k=
-golang.org/x/sys v0.36.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
-golang.org/x/sys v0.37.0 h1:fdNQudmxPjkdUTPnLn5mdQv7Zwvbvpaxqs831goi9kQ=
-golang.org/x/sys v0.37.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.11.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.38.0 h1:3yZWxaJjBmCWXqhN1qh02AkOnCQ1poK6oF+a7xWL6Gc=
 golang.org/x/sys v0.38.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
-golang.org/x/text v0.24.0 h1:dd5Bzh4yt5KYA8f9CJHCP4FB4D51c2c6JvN37xJJkJ0=
-golang.org/x/text v0.24.0/go.mod h1:L8rBsPeo2pSS+xqN0d5u2ikmjtmoJbDBT1b7nHvFCdU=
-golang.org/x/text v0.28.0 h1:rhazDwis8INMIwQ4tpjLDzUhx6RlXqZNPEM0huQojng=
-golang.org/x/text v0.28.0/go.mod h1:U8nCwOR8jO/marOQ0QbDiOngZVEBB7MAiitBuMjXiNU=
+golang.org/x/term v0.36.0 h1:zMPR+aF8gfksFprF/Nc/rd1wRS1EI6nDBGyWAvDzx2Q=
+golang.org/x/term v0.36.0/go.mod h1:Qu394IJq6V6dCBRgwqshf3mPF85AqzYEzofzRdZkWss=
 golang.org/x/text v0.30.0 h1:yznKA/E9zq54KzlzBEAWn1NXSQ8DIp/NYMy88xJjl4k=
 golang.org/x/text v0.30.0/go.mod h1:yDdHFIX9t+tORqspjENWgzaCVXgk0yYnYuSZ8UzzBVM=
 golang.org/x/time v0.14.0 h1:MRx4UaLrDotUKUdCIqzPC48t1Y9hANFKIRpNx+Te8PI=
 golang.org/x/time v0.14.0/go.mod h1:eL/Oa2bBBK0TkX57Fyni+NgnyQQN4LitPmob2Hjnqw4=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
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grafana/dbbackup-dashboard.json

@@ -0,0 +1,1294 @@
+{
+  "annotations": {
+    "list": [
+      {
+        "builtIn": 1,
+        "datasource": {
+          "type": "grafana",
+          "uid": "-- Grafana --"
+        },
+        "enable": true,
+        "hide": true,
+        "iconColor": "rgba(0, 211, 255, 1)",
+        "name": "Annotations & Alerts",
+        "type": "dashboard"
+      }
+    ]
+  },
+  "editable": true,
+  "fiscalYearStartMonth": 0,
+  "graphTooltip": 0,
+  "id": null,
+  "links": [],
+  "liveNow": false,
+  "panels": [
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "thresholds"
+          },
+          "mappings": [
+            {
+              "options": {
+                "0": {
+                  "color": "red",
+                  "index": 1,
+                  "text": "FAILED"
+                },
+                "1": {
+                  "color": "green",
+                  "index": 0,
+                  "text": "SUCCESS"
+                }
+              },
+              "type": "value"
+            }
+          ],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "red",
+                "value": null
+              },
+              {
+                "color": "green",
+                "value": 1
+              }
+            ]
+          }
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 4,
+        "w": 6,
+        "x": 0,
+        "y": 0
+      },
+      "id": 1,
+      "options": {
+        "colorMode": "background",
+        "graphMode": "none",
+        "justifyMode": "auto",
+        "orientation": "auto",
+        "reduceOptions": {
+          "calcs": [
+            "lastNotNull"
+          ],
+          "fields": "",
+          "values": false
+        },
+        "textMode": "auto"
+      },
+      "pluginVersion": "10.2.0",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_rpo_seconds{instance=~\"$instance\"} < bool 604800",
+          "legendFormat": "{{database}}",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Last Backup Status",
+      "type": "stat"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "thresholds"
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": null
+              },
+              {
+                "color": "yellow",
+                "value": 43200
+              },
+              {
+                "color": "red",
+                "value": 86400
+              }
+            ]
+          },
+          "unit": "s"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 4,
+        "w": 6,
+        "x": 6,
+        "y": 0
+      },
+      "id": 2,
+      "options": {
+        "colorMode": "value",
+        "graphMode": "area",
+        "justifyMode": "auto",
+        "orientation": "auto",
+        "reduceOptions": {
+          "calcs": [
+            "lastNotNull"
+          ],
+          "fields": "",
+          "values": false
+        },
+        "textMode": "auto"
+      },
+      "pluginVersion": "10.2.0",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_rpo_seconds{instance=~\"$instance\"}",
+          "legendFormat": "{{database}}",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Time Since Last Backup",
+      "type": "stat"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "thresholds"
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": null
+              }
+            ]
+          }
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 4,
+        "w": 6,
+        "x": 12,
+        "y": 0
+      },
+      "id": 3,
+      "options": {
+        "colorMode": "value",
+        "graphMode": "none",
+        "justifyMode": "auto",
+        "orientation": "auto",
+        "reduceOptions": {
+          "calcs": [
+            "lastNotNull"
+          ],
+          "fields": "",
+          "values": false
+        },
+        "textMode": "auto"
+      },
+      "pluginVersion": "10.2.0",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_backup_total{instance=~\"$instance\", status=\"success\"}",
+          "legendFormat": "{{database}}",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Total Successful Backups",
+      "type": "stat"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "thresholds"
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": null
+              },
+              {
+                "color": "red",
+                "value": 1
+              }
+            ]
+          }
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 4,
+        "w": 6,
+        "x": 18,
+        "y": 0
+      },
+      "id": 4,
+      "options": {
+        "colorMode": "value",
+        "graphMode": "none",
+        "justifyMode": "auto",
+        "orientation": "auto",
+        "reduceOptions": {
+          "calcs": [
+            "lastNotNull"
+          ],
+          "fields": "",
+          "values": false
+        },
+        "textMode": "auto"
+      },
+      "pluginVersion": "10.2.0",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_backup_total{instance=~\"$instance\", status=\"failure\"}",
+          "legendFormat": "{{database}}",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Total Failed Backups",
+      "type": "stat"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "palette-classic"
+          },
+          "custom": {
+            "axisCenteredZero": false,
+            "axisColorMode": "text",
+            "axisLabel": "",
+            "axisPlacement": "auto",
+            "barAlignment": 0,
+            "drawStyle": "line",
+            "fillOpacity": 10,
+            "gradientMode": "none",
+            "hideFrom": {
+              "legend": false,
+              "tooltip": false,
+              "viz": false
+            },
+            "insertNulls": false,
+            "lineInterpolation": "linear",
+            "lineWidth": 1,
+            "pointSize": 5,
+            "scaleDistribution": {
+              "type": "linear"
+            },
+            "showPoints": "auto",
+            "spanNulls": false,
+            "stacking": {
+              "group": "A",
+              "mode": "none"
+            },
+            "thresholdsStyle": {
+              "mode": "line"
+            }
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": null
+              },
+              {
+                "color": "red",
+                "value": 86400
+              }
+            ]
+          },
+          "unit": "s"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 8,
+        "w": 12,
+        "x": 0,
+        "y": 4
+      },
+      "id": 5,
+      "options": {
+        "legend": {
+          "calcs": [],
+          "displayMode": "list",
+          "placement": "bottom",
+          "showLegend": true
+        },
+        "tooltip": {
+          "mode": "single",
+          "sort": "none"
+        }
+      },
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_rpo_seconds{instance=~\"$instance\"}",
+          "legendFormat": "{{instance}} - {{database}}",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "RPO Over Time",
+      "type": "timeseries"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "palette-classic"
+          },
+          "custom": {
+            "axisCenteredZero": false,
+            "axisColorMode": "text",
+            "axisLabel": "",
+            "axisPlacement": "auto",
+            "barAlignment": 0,
+            "drawStyle": "bars",
+            "fillOpacity": 100,
+            "gradientMode": "none",
+            "hideFrom": {
+              "legend": false,
+              "tooltip": false,
+              "viz": false
+            },
+            "insertNulls": false,
+            "lineInterpolation": "linear",
+            "lineWidth": 1,
+            "pointSize": 5,
+            "scaleDistribution": {
+              "type": "linear"
+            },
+            "showPoints": "never",
+            "spanNulls": false,
+            "stacking": {
+              "group": "A",
+              "mode": "none"
+            },
+            "thresholdsStyle": {
+              "mode": "off"
+            }
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": null
+              }
+            ]
+          },
+          "unit": "bytes"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 8,
+        "w": 12,
+        "x": 12,
+        "y": 4
+      },
+      "id": 6,
+      "options": {
+        "legend": {
+          "calcs": [],
+          "displayMode": "list",
+          "placement": "bottom",
+          "showLegend": true
+        },
+        "tooltip": {
+          "mode": "single",
+          "sort": "none"
+        }
+      },
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_last_backup_size_bytes{instance=~\"$instance\"}",
+          "legendFormat": "{{instance}} - {{database}}",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Backup Size",
+      "type": "timeseries"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "palette-classic"
+          },
+          "custom": {
+            "axisCenteredZero": false,
+            "axisColorMode": "text",
+            "axisLabel": "",
+            "axisPlacement": "auto",
+            "barAlignment": 0,
+            "drawStyle": "line",
+            "fillOpacity": 10,
+            "gradientMode": "none",
+            "hideFrom": {
+              "legend": false,
+              "tooltip": false,
+              "viz": false
+            },
+            "insertNulls": false,
+            "lineInterpolation": "linear",
+            "lineWidth": 1,
+            "pointSize": 5,
+            "scaleDistribution": {
+              "type": "linear"
+            },
+            "showPoints": "auto",
+            "spanNulls": false,
+            "stacking": {
+              "group": "A",
+              "mode": "none"
+            },
+            "thresholdsStyle": {
+              "mode": "off"
+            }
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": null
+              }
+            ]
+          },
+          "unit": "s"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 8,
+        "w": 12,
+        "x": 0,
+        "y": 12
+      },
+      "id": 7,
+      "options": {
+        "legend": {
+          "calcs": [],
+          "displayMode": "list",
+          "placement": "bottom",
+          "showLegend": true
+        },
+        "tooltip": {
+          "mode": "single",
+          "sort": "none"
+        }
+      },
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_last_backup_duration_seconds{instance=~\"$instance\"}",
+          "legendFormat": "{{instance}} - {{database}}",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Backup Duration",
+      "type": "timeseries"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "thresholds"
+          },
+          "custom": {
+            "align": "auto",
+            "cellOptions": {
+              "type": "auto"
+            },
+            "inspect": false
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": null
+              }
+            ]
+          }
+        },
+        "overrides": [
+          {
+            "matcher": {
+              "id": "byName",
+              "options": "Status"
+            },
+            "properties": [
+              {
+                "id": "mappings",
+                "value": [
+                  {
+                    "options": {
+                      "0": {
+                        "color": "red",
+                        "index": 1,
+                        "text": "FAILED"
+                      },
+                      "1": {
+                        "color": "green",
+                        "index": 0,
+                        "text": "SUCCESS"
+                      }
+                    },
+                    "type": "value"
+                  }
+                ]
+              },
+              {
+                "id": "custom.cellOptions",
+                "value": {
+                  "mode": "basic",
+                  "type": "color-background"
+                }
+              }
+            ]
+          },
+          {
+            "matcher": {
+              "id": "byName",
+              "options": "RPO"
+            },
+            "properties": [
+              {
+                "id": "unit",
+                "value": "s"
+              },
+              {
+                "id": "thresholds",
+                "value": {
+                  "mode": "absolute",
+                  "steps": [
+                    {
+                      "color": "green",
+                      "value": null
+                    },
+                    {
+                      "color": "yellow",
+                      "value": 43200
+                    },
+                    {
+                      "color": "red",
+                      "value": 86400
+                    }
+                  ]
+                }
+              },
+              {
+                "id": "custom.cellOptions",
+                "value": {
+                  "mode": "basic",
+                  "type": "color-background"
+                }
+              }
+            ]
+          },
+          {
+            "matcher": {
+              "id": "byName",
+              "options": "Size"
+            },
+            "properties": [
+              {
+                "id": "unit",
+                "value": "bytes"
+              }
+            ]
+          }
+        ]
+      },
+      "gridPos": {
+        "h": 8,
+        "w": 12,
+        "x": 12,
+        "y": 12
+      },
+      "id": 8,
+      "options": {
+        "cellHeight": "sm",
+        "footer": {
+          "countRows": false,
+          "fields": "",
+          "reducer": [
+            "sum"
+          ],
+          "show": false
+        },
+        "showHeader": true
+      },
+      "pluginVersion": "10.2.0",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_rpo_seconds{instance=~\"$instance\"}",
+          "format": "table",
+          "hide": false,
+          "instant": true,
+          "legendFormat": "__auto",
+          "range": false,
+          "refId": "RPO"
+        },
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_last_backup_size_bytes{instance=~\"$instance\"}",
+          "format": "table",
+          "hide": false,
+          "instant": true,
+          "legendFormat": "__auto",
+          "range": false,
+          "refId": "Size"
+        }
+      ],
+      "title": "Backup Status Overview",
+      "transformations": [
+        {
+          "id": "joinByField",
+          "options": {
+            "byField": "database",
+            "mode": "outer"
+          }
+        },
+        {
+          "id": "organize",
+          "options": {
+            "excludeByName": {
+              "Time": true,
+              "Time 1": true,
+              "Time 2": true,
+              "__name__": true,
+              "__name__ 1": true,
+              "__name__ 2": true,
+              "instance 1": true,
+              "instance 2": true,
+              "job": true,
+              "job 1": true,
+              "job 2": true,
+              "engine 1": true,
+              "engine 2": true
+            },
+            "indexByName": {
+              "Database": 0,
+              "Instance": 1,
+              "Engine": 2,
+              "RPO": 3,
+              "Size": 4
+            },
+            "renameByName": {
+              "Value #RPO": "RPO",
+              "Value #Size": "Size",
+              "database": "Database",
+              "instance": "Instance",
+              "engine": "Engine"
+            }
+          }
+        }
+      ],
+      "type": "table"
+    },
+    {
+      "collapsed": false,
+      "gridPos": {
+        "h": 1,
+        "w": 24,
+        "x": 0,
+        "y": 30
+      },
+      "id": 100,
+      "panels": [],
+      "title": "Deduplication Statistics",
+      "type": "row"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "thresholds"
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "blue",
+                "value": null
+              }
+            ]
+          },
+          "unit": "percentunit"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 5,
+        "w": 6,
+        "x": 0,
+        "y": 31
+      },
+      "id": 101,
+      "options": {
+        "colorMode": "background",
+        "graphMode": "none",
+        "justifyMode": "auto",
+        "orientation": "auto",
+        "reduceOptions": {
+          "calcs": ["lastNotNull"],
+          "fields": "",
+          "values": false
+        },
+        "textMode": "auto"
+      },
+      "pluginVersion": "10.2.0",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_dedup_ratio{instance=~\"$instance\"}",
+          "legendFormat": "__auto",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Dedup Ratio",
+      "type": "stat"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "thresholds"
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": null
+              }
+            ]
+          },
+          "unit": "bytes"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 5,
+        "w": 6,
+        "x": 6,
+        "y": 31
+      },
+      "id": 102,
+      "options": {
+        "colorMode": "value",
+        "graphMode": "none",
+        "justifyMode": "auto",
+        "orientation": "auto",
+        "reduceOptions": {
+          "calcs": ["lastNotNull"],
+          "fields": "",
+          "values": false
+        },
+        "textMode": "auto"
+      },
+      "pluginVersion": "10.2.0",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_dedup_space_saved_bytes{instance=~\"$instance\"}",
+          "legendFormat": "__auto",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Space Saved",
+      "type": "stat"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "thresholds"
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "yellow",
+                "value": null
+              }
+            ]
+          },
+          "unit": "bytes"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 5,
+        "w": 6,
+        "x": 12,
+        "y": 31
+      },
+      "id": 103,
+      "options": {
+        "colorMode": "value",
+        "graphMode": "none",
+        "justifyMode": "auto",
+        "orientation": "auto",
+        "reduceOptions": {
+          "calcs": ["lastNotNull"],
+          "fields": "",
+          "values": false
+        },
+        "textMode": "auto"
+      },
+      "pluginVersion": "10.2.0",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_dedup_disk_usage_bytes{instance=~\"$instance\"}",
+          "legendFormat": "__auto",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Disk Usage",
+      "type": "stat"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "thresholds"
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "purple",
+                "value": null
+              }
+            ]
+          },
+          "unit": "short"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 5,
+        "w": 6,
+        "x": 18,
+        "y": 31
+      },
+      "id": 104,
+      "options": {
+        "colorMode": "value",
+        "graphMode": "none",
+        "justifyMode": "auto",
+        "orientation": "auto",
+        "reduceOptions": {
+          "calcs": ["lastNotNull"],
+          "fields": "",
+          "values": false
+        },
+        "textMode": "auto"
+      },
+      "pluginVersion": "10.2.0",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_dedup_chunks_total{instance=~\"$instance\"}",
+          "legendFormat": "__auto",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Total Chunks",
+      "type": "stat"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "palette-classic"
+          },
+          "custom": {
+            "axisBorderShow": false,
+            "axisCenteredZero": false,
+            "axisColorMode": "text",
+            "axisLabel": "",
+            "axisPlacement": "auto",
+            "barAlignment": 0,
+            "drawStyle": "line",
+            "fillOpacity": 10,
+            "gradientMode": "none",
+            "hideFrom": {
+              "legend": false,
+              "tooltip": false,
+              "viz": false
+            },
+            "insertNulls": false,
+            "lineInterpolation": "linear",
+            "lineWidth": 1,
+            "pointSize": 5,
+            "scaleDistribution": {
+              "type": "linear"
+            },
+            "showPoints": "auto",
+            "spanNulls": false,
+            "stacking": {
+              "group": "A",
+              "mode": "none"
+            },
+            "thresholdsStyle": {
+              "mode": "off"
+            }
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": null
+              }
+            ]
+          },
+          "unit": "percentunit"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 8,
+        "w": 12,
+        "x": 0,
+        "y": 36
+      },
+      "id": 105,
+      "options": {
+        "legend": {
+          "calcs": [],
+          "displayMode": "list",
+          "placement": "bottom",
+          "showLegend": true
+        },
+        "tooltip": {
+          "mode": "single",
+          "sort": "none"
+        }
+      },
+      "pluginVersion": "10.2.0",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_dedup_database_ratio{instance=~\"$instance\"}",
+          "legendFormat": "{{database}}",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Dedup Ratio by Database",
+      "type": "timeseries"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "palette-classic"
+          },
+          "custom": {
+            "axisBorderShow": false,
+            "axisCenteredZero": false,
+            "axisColorMode": "text",
+            "axisLabel": "",
+            "axisPlacement": "auto",
+            "barAlignment": 0,
+            "drawStyle": "line",
+            "fillOpacity": 10,
+            "gradientMode": "none",
+            "hideFrom": {
+              "legend": false,
+              "tooltip": false,
+              "viz": false
+            },
+            "insertNulls": false,
+            "lineInterpolation": "linear",
+            "lineWidth": 1,
+            "pointSize": 5,
+            "scaleDistribution": {
+              "type": "linear"
+            },
+            "showPoints": "auto",
+            "spanNulls": false,
+            "stacking": {
+              "group": "A",
+              "mode": "none"
+            },
+            "thresholdsStyle": {
+              "mode": "off"
+            }
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": null
+              }
+            ]
+          },
+          "unit": "bytes"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 8,
+        "w": 12,
+        "x": 12,
+        "y": 36
+      },
+      "id": 106,
+      "options": {
+        "legend": {
+          "calcs": [],
+          "displayMode": "list",
+          "placement": "bottom",
+          "showLegend": true
+        },
+        "tooltip": {
+          "mode": "single",
+          "sort": "none"
+        }
+      },
+      "pluginVersion": "10.2.0",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_dedup_space_saved_bytes{instance=~\"$instance\"}",
+          "legendFormat": "Space Saved",
+          "range": true,
+          "refId": "A"
+        },
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_dedup_disk_usage_bytes{instance=~\"$instance\"}",
+          "legendFormat": "Disk Usage",
+          "range": true,
+          "refId": "B"
+        }
+      ],
+      "title": "Dedup Storage Over Time",
+      "type": "timeseries"
+    }
+  ],
+  "refresh": "30s",
+  "schemaVersion": 38,
+  "tags": [
+    "dbbackup",
+    "backup",
+    "database",
+    "dedup"
+  ],
+  "templating": {
+    "list": [
+      {
+        "current": {
+          "selected": false,
+          "text": "All",
+          "value": "$__all"
+        },
+        "datasource": {
+          "type": "prometheus",
+          "uid": "${DS_PROMETHEUS}"
+        },
+        "definition": "label_values(dbbackup_rpo_seconds, instance)",
+        "hide": 0,
+        "includeAll": true,
+        "label": "Instance",
+        "multi": true,
+        "name": "instance",
+        "options": [],
+        "query": {
+          "query": "label_values(dbbackup_rpo_seconds, instance)",
+          "refId": "StandardVariableQuery"
+        },
+        "refresh": 2,
+        "regex": "",
+        "skipUrlSync": false,
+        "sort": 1,
+        "type": "query"
+      },
+      {
+        "hide": 2,
+        "name": "DS_PROMETHEUS",
+        "query": "prometheus",
+        "skipUrlSync": false,
+        "type": "datasource"
+      }
+    ]
+  },
+  "time": {
+    "from": "now-24h",
+    "to": "now"
+  },
+  "timepicker": {},
+  "timezone": "",
+  "title": "DBBackup Overview",
+  "uid": "dbbackup-overview",
+  "version": 1,
+  "weekStart": ""
+}

internal/auth/helper.go

@@ -2,12 +2,14 @@ package auth
 
 import (
 	"bufio"
+	"context"
 	"fmt"
 	"os"
 	"os/exec"
 	"path/filepath"
 	"strconv"
 	"strings"
+	"time"
 
 	"dbbackup/internal/config"
 )
@@ -69,7 +71,10 @@ func checkPgHbaConf(user string) AuthMethod {
 
 // findHbaFileViaPostgres asks PostgreSQL for the hba_file location
 func findHbaFileViaPostgres() string {
-	cmd := exec.Command("psql", "-U", "postgres", "-t", "-c", "SHOW hba_file;")
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	cmd := exec.CommandContext(ctx, "psql", "-U", "postgres", "-t", "-c", "SHOW hba_file;")
 	output, err := cmd.Output()
 	if err != nil {
 		return ""
@@ -79,16 +84,13 @@ func findHbaFileViaPostgres() string {
 
 // parsePgHbaConf parses pg_hba.conf and returns the authentication method
 func parsePgHbaConf(path string, user string) AuthMethod {
-	// Try with sudo if we can't read directly
+	// Try to read the file directly - do NOT use sudo as it triggers password prompts
+	// If we can't read pg_hba.conf, we'll rely on connection attempts to determine auth
 	file, err := os.Open(path)
 	if err != nil {
-		// Try with sudo
-		cmd := exec.Command("sudo", "cat", path)
-		output, err := cmd.Output()
-		if err != nil {
-			return AuthUnknown
-		}
-		return parseHbaContent(string(output), user)
+		// If we can't read the file, return unknown and let the connection determine auth
+		// This avoids sudo password prompts when running as postgres via su
+		return AuthUnknown
 	}
 	defer file.Close()
 
@@ -196,13 +198,13 @@ func CheckAuthenticationMismatch(cfg *config.Config) (bool, string) {
 func buildAuthMismatchMessage(osUser, dbUser string, method AuthMethod) string {
 	var msg strings.Builder
 
-	msg.WriteString("\n⚠️  Authentication Mismatch Detected\n")
+	msg.WriteString("\n[WARN]  Authentication Mismatch Detected\n")
 	msg.WriteString(strings.Repeat("=", 60) + "\n\n")
 
 	msg.WriteString(fmt.Sprintf("   PostgreSQL is using '%s' authentication\n", method))
 	msg.WriteString(fmt.Sprintf("   OS user '%s' cannot authenticate as DB user '%s'\n\n", osUser, dbUser))
 
-	msg.WriteString("💡 Solutions (choose one):\n\n")
+	msg.WriteString("[TIP] Solutions (choose one):\n\n")
 
 	msg.WriteString(fmt.Sprintf("   1. Run as matching user:\n"))
 	msg.WriteString(fmt.Sprintf("      sudo -u %s %s\n\n", dbUser, getCommandLine()))
@@ -218,7 +220,7 @@ func buildAuthMismatchMessage(osUser, dbUser string, method AuthMethod) string {
 	msg.WriteString("   4. Provide password via flag:\n")
 	msg.WriteString(fmt.Sprintf("      %s --password your_password\n\n", getCommandLine()))
 
-	msg.WriteString("📝 Note: For production use, ~/.pgpass or PGPASSWORD are recommended\n")
+	msg.WriteString("[NOTE] Note: For production use, ~/.pgpass or PGPASSWORD are recommended\n")
 	msg.WriteString("         to avoid exposing passwords in command history.\n\n")
 
 	msg.WriteString(strings.Repeat("=", 60) + "\n")

internal/backup/encryption.go

@@ -87,20 +87,46 @@ func IsBackupEncrypted(backupPath string) bool {
 		return meta.Encrypted
 	}
 
-	// Fallback: check if file starts with encryption nonce
+	// No metadata found - check file format to determine if encrypted
+	// Known unencrypted formats have specific magic bytes:
+	// - Gzip: 1f 8b
+	// - PGDMP (PostgreSQL custom): 50 47 44 4d 50 (PGDMP)
+	// - Plain SQL: starts with text (-- or SET or CREATE)
+	// - Tar: 75 73 74 61 72 (ustar) at offset 257
+	//
+	// If file doesn't match any known format, it MIGHT be encrypted,
+	// but we return false to avoid false positives. User must provide
+	// metadata file or use --encrypt flag explicitly.
 	file, err := os.Open(backupPath)
 	if err != nil {
 		return false
 	}
 	defer file.Close()
 
-	// Try to read nonce - if it succeeds, likely encrypted
-	nonce := make([]byte, crypto.NonceSize)
-	if n, err := file.Read(nonce); err != nil || n != crypto.NonceSize {
+	header := make([]byte, 6)
+	if n, err := file.Read(header); err != nil || n < 2 {
 		return false
 	}
 
-	return true
+	// Check for known unencrypted formats
+	// Gzip magic: 1f 8b
+	if header[0] == 0x1f && header[1] == 0x8b {
+		return false // Gzip compressed - not encrypted
+	}
+
+	// PGDMP magic (PostgreSQL custom format)
+	if len(header) >= 5 && string(header[:5]) == "PGDMP" {
+		return false // PostgreSQL custom dump - not encrypted
+	}
+
+	// Plain text SQL (starts with --, SET, CREATE, etc.)
+	if header[0] == '-' || header[0] == 'S' || header[0] == 'C' || header[0] == '/' {
+		return false // Plain text SQL - not encrypted
+	}
+
+	// Without metadata, we cannot reliably determine encryption status
+	// Return false to avoid blocking restores with false positives
+	return false
 }
 
 // DecryptBackupFile decrypts an encrypted backup file

internal/backup/engine.go

@@ -28,14 +28,22 @@ import (
 	"dbbackup/internal/swap"
 )
 
+// ProgressCallback is called with byte-level progress updates during backup operations
+type ProgressCallback func(current, total int64, description string)
+
+// DatabaseProgressCallback is called with database count progress during cluster backup
+type DatabaseProgressCallback func(done, total int, dbName string)
+
 // Engine handles backup operations
 type Engine struct {
-	cfg              *config.Config
-	log              logger.Logger
-	db               database.Database
-	progress         progress.Indicator
-	detailedReporter *progress.DetailedReporter
-	silent           bool // Silent mode for TUI
+	cfg                *config.Config
+	log                logger.Logger
+	db                 database.Database
+	progress           progress.Indicator
+	detailedReporter   *progress.DetailedReporter
+	silent             bool // Silent mode for TUI
+	progressCallback   ProgressCallback
+	dbProgressCallback DatabaseProgressCallback
 }
 
 // New creates a new backup engine
@@ -86,6 +94,30 @@ func NewSilent(cfg *config.Config, log logger.Logger, db database.Database, prog
 	}
 }
 
+// SetProgressCallback sets a callback for detailed progress reporting (for TUI mode)
+func (e *Engine) SetProgressCallback(cb ProgressCallback) {
+	e.progressCallback = cb
+}
+
+// SetDatabaseProgressCallback sets a callback for database count progress during cluster backup
+func (e *Engine) SetDatabaseProgressCallback(cb DatabaseProgressCallback) {
+	e.dbProgressCallback = cb
+}
+
+// reportProgress reports progress to the callback if set
+func (e *Engine) reportProgress(current, total int64, description string) {
+	if e.progressCallback != nil {
+		e.progressCallback(current, total, description)
+	}
+}
+
+// reportDatabaseProgress reports database count progress to the callback if set
+func (e *Engine) reportDatabaseProgress(done, total int, dbName string) {
+	if e.dbProgressCallback != nil {
+		e.dbProgressCallback(done, total, dbName)
+	}
+}
+
 // loggerAdapter adapts our logger to the progress.Logger interface
 type loggerAdapter struct {
 	logger logger.Logger
@@ -443,6 +475,14 @@ func (e *Engine) BackupCluster(ctx context.Context) error {
 			defer wg.Done()
 			defer func() { <-semaphore }() // Release
 
+			// Panic recovery - prevent one database failure from crashing entire cluster backup
+			defer func() {
+				if r := recover(); r != nil {
+					e.log.Error("Panic in database backup goroutine", "database", name, "panic", r)
+					atomic.AddInt32(&failCount, 1)
+				}
+			}()
+
 			// Check for cancellation at start of goroutine
 			select {
 			case <-ctx.Done():
@@ -457,6 +497,8 @@ func (e *Engine) BackupCluster(ctx context.Context) error {
 			estimator.UpdateProgress(idx)
 			e.printf("   [%d/%d] Backing up database: %s\n", idx+1, len(databases), name)
 			quietProgress.Update(fmt.Sprintf("Backing up database %d/%d: %s", idx+1, len(databases), name))
+			// Report database progress to TUI callback
+			e.reportDatabaseProgress(idx+1, len(databases), name)
 			mu.Unlock()
 
 			// Check database size and warn if very large
@@ -465,7 +507,7 @@ func (e *Engine) BackupCluster(ctx context.Context) error {
 				mu.Lock()
 				e.printf("       Database size: %s\n", sizeStr)
 				if size > 10*1024*1024*1024 { // > 10GB
-					e.printf("       ⚠️  Large database detected - this may take a while\n")
+					e.printf("       [WARN]  Large database detected - this may take a while\n")
 				}
 				mu.Unlock()
 			}
@@ -502,40 +544,24 @@ func (e *Engine) BackupCluster(ctx context.Context) error {
 
 			cmd := e.db.BuildBackupCommand(name, dumpFile, options)
 
-			// Calculate timeout based on database size:
-			// - Minimum 2 hours for small databases
-			// - Add 1 hour per 20GB for large databases
-			// - This allows ~69GB database to take up to 5+ hours
-			timeout := 2 * time.Hour
-			if size, err := e.db.GetDatabaseSize(ctx, name); err == nil {
-				sizeGB := size / (1024 * 1024 * 1024)
-				if sizeGB > 20 {
-					extraHours := (sizeGB / 20) + 1
-					timeout = time.Duration(2+extraHours) * time.Hour
-					mu.Lock()
-					e.printf("       Extended timeout: %v (for %dGB database)\n", timeout, sizeGB)
-					mu.Unlock()
-				}
-			}
-
-			dbCtx, cancel := context.WithTimeout(ctx, timeout)
-			defer cancel()
-			err := e.executeCommand(dbCtx, cmd, dumpFile)
-			cancel()
+			// NO TIMEOUT for individual database backups
+			// Large databases with large objects can take many hours
+			// The parent context handles cancellation if needed
+			err := e.executeCommand(ctx, cmd, dumpFile)
 
 			if err != nil {
 				e.log.Warn("Failed to backup database", "database", name, "error", err)
 				mu.Lock()
-				e.printf("   ⚠️  WARNING: Failed to backup %s: %v\n", name, err)
+				e.printf("   [WARN]  WARNING: Failed to backup %s: %v\n", name, err)
 				mu.Unlock()
 				atomic.AddInt32(&failCount, 1)
 			} else {
 				compressedCandidate := strings.TrimSuffix(dumpFile, ".dump") + ".sql.gz"
 				mu.Lock()
 				if info, err := os.Stat(compressedCandidate); err == nil {
-					e.printf("   ✅ Completed %s (%s)\n", name, formatBytes(info.Size()))
+					e.printf("   [OK] Completed %s (%s)\n", name, formatBytes(info.Size()))
 				} else if info, err := os.Stat(dumpFile); err == nil {
-					e.printf("   ✅ Completed %s (%s)\n", name, formatBytes(info.Size()))
+					e.printf("   [OK] Completed %s (%s)\n", name, formatBytes(info.Size()))
 				}
 				mu.Unlock()
 				atomic.AddInt32(&successCount, 1)
@@ -614,12 +640,36 @@ func (e *Engine) executeCommandWithProgress(ctx context.Context, cmdArgs []strin
 		return fmt.Errorf("failed to start command: %w", err)
 	}
 
-	// Monitor progress via stderr
-	go e.monitorCommandProgress(stderr, tracker)
+	// Monitor progress via stderr in goroutine
+	stderrDone := make(chan struct{})
+	go func() {
+		defer close(stderrDone)
+		e.monitorCommandProgress(stderr, tracker)
+	}()
 
-	// Wait for command to complete
-	if err := cmd.Wait(); err != nil {
-		return fmt.Errorf("backup command failed: %w", err)
+	// Wait for command to complete with proper context handling
+	cmdDone := make(chan error, 1)
+	go func() {
+		cmdDone <- cmd.Wait()
+	}()
+
+	var cmdErr error
+	select {
+	case cmdErr = <-cmdDone:
+		// Command completed (success or failure)
+	case <-ctx.Done():
+		// Context cancelled - kill process to unblock
+		e.log.Warn("Backup cancelled - killing process")
+		cmd.Process.Kill()
+		<-cmdDone // Wait for goroutine to finish
+		cmdErr = ctx.Err()
+	}
+
+	// Wait for stderr reader to finish
+	<-stderrDone
+
+	if cmdErr != nil {
+		return fmt.Errorf("backup command failed: %w", cmdErr)
 	}
 
 	return nil
@@ -696,8 +746,12 @@ func (e *Engine) executeMySQLWithProgressAndCompression(ctx context.Context, cmd
 		return fmt.Errorf("failed to get stderr pipe: %w", err)
 	}
 
-	// Start monitoring progress
-	go e.monitorCommandProgress(stderr, tracker)
+	// Start monitoring progress in goroutine
+	stderrDone := make(chan struct{})
+	go func() {
+		defer close(stderrDone)
+		e.monitorCommandProgress(stderr, tracker)
+	}()
 
 	// Start both commands
 	if err := gzipCmd.Start(); err != nil {
@@ -705,20 +759,41 @@ func (e *Engine) executeMySQLWithProgressAndCompression(ctx context.Context, cmd
 	}
 
 	if err := dumpCmd.Start(); err != nil {
+		gzipCmd.Process.Kill()
 		return fmt.Errorf("failed to start mysqldump: %w", err)
 	}
 
-	// Wait for mysqldump to complete
-	if err := dumpCmd.Wait(); err != nil {
-		return fmt.Errorf("mysqldump failed: %w", err)
+	// Wait for mysqldump with context handling
+	dumpDone := make(chan error, 1)
+	go func() {
+		dumpDone <- dumpCmd.Wait()
+	}()
+
+	var dumpErr error
+	select {
+	case dumpErr = <-dumpDone:
+		// mysqldump completed
+	case <-ctx.Done():
+		e.log.Warn("Backup cancelled - killing mysqldump")
+		dumpCmd.Process.Kill()
+		gzipCmd.Process.Kill()
+		<-dumpDone
+		return ctx.Err()
 	}
 
+	// Wait for stderr reader
+	<-stderrDone
+
 	// Close pipe and wait for gzip
 	pipe.Close()
 	if err := gzipCmd.Wait(); err != nil {
 		return fmt.Errorf("gzip failed: %w", err)
 	}
 
+	if dumpErr != nil {
+		return fmt.Errorf("mysqldump failed: %w", dumpErr)
+	}
+
 	return nil
 }
 
@@ -749,19 +824,45 @@ func (e *Engine) executeMySQLWithCompression(ctx context.Context, cmdArgs []stri
 	gzipCmd.Stdin = stdin
 	gzipCmd.Stdout = outFile
 
-	// Start both commands
+	// Start gzip first
 	if err := gzipCmd.Start(); err != nil {
 		return fmt.Errorf("failed to start gzip: %w", err)
 	}
 
-	if err := dumpCmd.Run(); err != nil {
-		return fmt.Errorf("mysqldump failed: %w", err)
+	// Start mysqldump
+	if err := dumpCmd.Start(); err != nil {
+		gzipCmd.Process.Kill()
+		return fmt.Errorf("failed to start mysqldump: %w", err)
 	}
 
+	// Wait for mysqldump with context handling
+	dumpDone := make(chan error, 1)
+	go func() {
+		dumpDone <- dumpCmd.Wait()
+	}()
+
+	var dumpErr error
+	select {
+	case dumpErr = <-dumpDone:
+		// mysqldump completed
+	case <-ctx.Done():
+		e.log.Warn("Backup cancelled - killing mysqldump")
+		dumpCmd.Process.Kill()
+		gzipCmd.Process.Kill()
+		<-dumpDone
+		return ctx.Err()
+	}
+
+	// Close pipe and wait for gzip
+	stdin.Close()
 	if err := gzipCmd.Wait(); err != nil {
 		return fmt.Errorf("gzip failed: %w", err)
 	}
 
+	if dumpErr != nil {
+		return fmt.Errorf("mysqldump failed: %w", dumpErr)
+	}
+
 	return nil
 }
 
@@ -836,11 +937,15 @@ func (e *Engine) createSampleBackup(ctx context.Context, databaseName, outputFil
 func (e *Engine) backupGlobals(ctx context.Context, tempDir string) error {
 	globalsFile := filepath.Join(tempDir, "globals.sql")
 
-	cmd := exec.CommandContext(ctx, "pg_dumpall", "--globals-only")
-	if e.cfg.Host != "localhost" {
-		cmd.Args = append(cmd.Args, "-h", e.cfg.Host, "-p", fmt.Sprintf("%d", e.cfg.Port))
+	// CRITICAL: Always pass port even for localhost - user may have non-standard port
+	cmd := exec.CommandContext(ctx, "pg_dumpall", "--globals-only",
+		"-p", fmt.Sprintf("%d", e.cfg.Port),
+		"-U", e.cfg.User)
+
+	// Only add -h flag for non-localhost to use Unix socket for peer auth
+	if e.cfg.Host != "localhost" && e.cfg.Host != "127.0.0.1" && e.cfg.Host != "" {
+		cmd.Args = append([]string{cmd.Args[0], "-h", e.cfg.Host}, cmd.Args[1:]...)
 	}
-	cmd.Args = append(cmd.Args, "-U", e.cfg.User)
 
 	cmd.Env = os.Environ()
 	if e.cfg.Password != "" {
@@ -898,15 +1003,46 @@ func (e *Engine) createArchive(ctx context.Context, sourceDir, outputFile string
 			goto regularTar
 		}
 
-		// Wait for tar to finish
-		if err := cmd.Wait(); err != nil {
+		// Wait for tar with proper context handling
+		tarDone := make(chan error, 1)
+		go func() {
+			tarDone <- cmd.Wait()
+		}()
+
+		var tarErr error
+		select {
+		case tarErr = <-tarDone:
+			// tar completed
+		case <-ctx.Done():
+			e.log.Warn("Archive creation cancelled - killing processes")
+			cmd.Process.Kill()
 			pigzCmd.Process.Kill()
-			return fmt.Errorf("tar failed: %w", err)
+			<-tarDone
+			return ctx.Err()
 		}
 
-		// Wait for pigz to finish
-		if err := pigzCmd.Wait(); err != nil {
-			return fmt.Errorf("pigz compression failed: %w", err)
+		if tarErr != nil {
+			pigzCmd.Process.Kill()
+			return fmt.Errorf("tar failed: %w", tarErr)
+		}
+
+		// Wait for pigz with proper context handling
+		pigzDone := make(chan error, 1)
+		go func() {
+			pigzDone <- pigzCmd.Wait()
+		}()
+
+		var pigzErr error
+		select {
+		case pigzErr = <-pigzDone:
+		case <-ctx.Done():
+			pigzCmd.Process.Kill()
+			<-pigzDone
+			return ctx.Err()
+		}
+
+		if pigzErr != nil {
+			return fmt.Errorf("pigz compression failed: %w", pigzErr)
 		}
 		return nil
 	}
@@ -1144,23 +1280,29 @@ func (e *Engine) uploadToCloud(ctx context.Context, backupFile string, tracker *
 	filename := filepath.Base(backupFile)
 	e.log.Info("Uploading backup to cloud", "file", filename, "size", cloud.FormatSize(info.Size()))
 
-	// Progress callback
-	var lastPercent int
+	// Create schollz progressbar for visual upload progress
+	bar := progress.NewSchollzBar(info.Size(), fmt.Sprintf("Uploading %s", filename))
+
+	// Progress callback with schollz progressbar
+	var lastBytes int64
 	progressCallback := func(transferred, total int64) {
-		percent := int(float64(transferred) / float64(total) * 100)
-		if percent != lastPercent && percent%10 == 0 {
-			e.log.Debug("Upload progress", "percent", percent, "transferred", cloud.FormatSize(transferred), "total", cloud.FormatSize(total))
-			lastPercent = percent
+		delta := transferred - lastBytes
+		if delta > 0 {
+			_ = bar.Add64(delta)
 		}
+		lastBytes = transferred
 	}
 
 	// Upload to cloud
 	err = backend.Upload(ctx, backupFile, filename, progressCallback)
 	if err != nil {
+		bar.Fail("Upload failed")
 		uploadStep.Fail(fmt.Errorf("cloud upload failed: %w", err))
 		return err
 	}
 
+	_ = bar.Finish()
+
 	// Also upload metadata file
 	metaFile := backupFile + ".meta.json"
 	if _, err := os.Stat(metaFile); err == nil {
@@ -1230,6 +1372,27 @@ func (e *Engine) executeCommand(ctx context.Context, cmdArgs []string, outputFil
 	// NO GO BUFFERING - pg_dump writes directly to disk
 	cmd := exec.CommandContext(ctx, cmdArgs[0], cmdArgs[1:]...)
 
+	// Start heartbeat ticker for backup progress
+	backupStart := time.Now()
+	heartbeatCtx, cancelHeartbeat := context.WithCancel(ctx)
+	heartbeatTicker := time.NewTicker(5 * time.Second)
+	defer heartbeatTicker.Stop()
+	defer cancelHeartbeat()
+
+	go func() {
+		for {
+			select {
+			case <-heartbeatTicker.C:
+				elapsed := time.Since(backupStart)
+				if e.progress != nil {
+					e.progress.Update(fmt.Sprintf("Backing up database... (elapsed: %s)", formatDuration(elapsed)))
+				}
+			case <-heartbeatCtx.Done():
+				return
+			}
+		}
+	}()
+
 	// Set environment variables for database tools
 	cmd.Env = os.Environ()
 	if e.cfg.Password != "" {
@@ -1251,8 +1414,10 @@ func (e *Engine) executeCommand(ctx context.Context, cmdArgs []string, outputFil
 		return fmt.Errorf("failed to start backup command: %w", err)
 	}
 
-	// Stream stderr output (don't buffer it all in memory)
+	// Stream stderr output in goroutine (don't buffer it all in memory)
+	stderrDone := make(chan struct{})
 	go func() {
+		defer close(stderrDone)
 		scanner := bufio.NewScanner(stderr)
 		scanner.Buffer(make([]byte, 64*1024), 1024*1024) // 1MB max line size
 		for scanner.Scan() {
@@ -1263,10 +1428,30 @@ func (e *Engine) executeCommand(ctx context.Context, cmdArgs []string, outputFil
 		}
 	}()
 
-	// Wait for command to complete
-	if err := cmd.Wait(); err != nil {
-		e.log.Error("Backup command failed", "error", err, "database", filepath.Base(outputFile))
-		return fmt.Errorf("backup command failed: %w", err)
+	// Wait for command to complete with proper context handling
+	cmdDone := make(chan error, 1)
+	go func() {
+		cmdDone <- cmd.Wait()
+	}()
+
+	var cmdErr error
+	select {
+	case cmdErr = <-cmdDone:
+		// Command completed (success or failure)
+	case <-ctx.Done():
+		// Context cancelled - kill process to unblock
+		e.log.Warn("Backup cancelled - killing pg_dump process")
+		cmd.Process.Kill()
+		<-cmdDone // Wait for goroutine to finish
+		cmdErr = ctx.Err()
+	}
+
+	// Wait for stderr reader to finish
+	<-stderrDone
+
+	if cmdErr != nil {
+		e.log.Error("Backup command failed", "error", cmdErr, "database", filepath.Base(outputFile))
+		return fmt.Errorf("backup command failed: %w", cmdErr)
 	}
 
 	return nil
@@ -1434,3 +1619,22 @@ func formatBytes(bytes int64) string {
 	}
 	return fmt.Sprintf("%.1f %cB", float64(bytes)/float64(div), "KMGTPE"[exp])
 }
+
+// formatDuration formats a duration to human readable format (e.g., "3m 45s", "1h 23m", "45s")
+func formatDuration(d time.Duration) string {
+	if d < time.Second {
+		return "0s"
+	}
+
+	hours := int(d.Hours())
+	minutes := int(d.Minutes()) % 60
+	seconds := int(d.Seconds()) % 60
+
+	if hours > 0 {
+		return fmt.Sprintf("%dh %dm", hours, minutes)
+	}
+	if minutes > 0 {
+		return fmt.Sprintf("%dm %ds", minutes, seconds)
+	}
+	return fmt.Sprintf("%ds", seconds)
+}

internal/backup/incremental_test.go

@@ -242,7 +242,7 @@ func TestIncrementalBackupRestore(t *testing.T) {
 		t.Errorf("Unchanged file base/12345/1235 not found in restore: %v", err)
 	}
 
-	t.Log("✅ Incremental backup and restore test completed successfully")
+	t.Log("[OK] Incremental backup and restore test completed successfully")
 }
 
 // TestIncrementalBackupErrors tests error handling

internal/checks/disk_check.go

@@ -75,16 +75,16 @@ func FormatDiskSpaceMessage(check *DiskSpaceCheck) string {
 
 	if check.Critical {
 		status = "CRITICAL"
-		icon = "❌"
+		icon = "[X]"
 	} else if check.Warning {
 		status = "WARNING"
-		icon = "⚠️ "
+		icon = "[!]"
 	} else {
 		status = "OK"
-		icon = "✓"
+		icon = "[+]"
 	}
 
-	msg := fmt.Sprintf(`📊 Disk Space Check (%s):
+	msg := fmt.Sprintf(`[DISK] Disk Space Check (%s):
    Path: %s
    Total: %s
    Available: %s (%.1f%% used)
@@ -98,13 +98,13 @@ func FormatDiskSpaceMessage(check *DiskSpaceCheck) string {
 		status)
 
 	if check.Critical {
-		msg += "\n   \n   ⚠️  CRITICAL: Insufficient disk space!"
+		msg += "\n   \n   [!!] CRITICAL: Insufficient disk space!"
 		msg += "\n   Operation blocked. Free up space before continuing."
 	} else if check.Warning {
-		msg += "\n   \n   ⚠️  WARNING: Low disk space!"
+		msg += "\n   \n   [!] WARNING: Low disk space!"
 		msg += "\n   Backup may fail if database is larger than estimated."
 	} else {
-		msg += "\n   \n   ✓ Sufficient space available"
+		msg += "\n   \n   [+] Sufficient space available"
 	}
 
 	return msg

internal/checks/disk_check_bsd.go

@@ -75,16 +75,16 @@ func FormatDiskSpaceMessage(check *DiskSpaceCheck) string {
 
 	if check.Critical {
 		status = "CRITICAL"
-		icon = "❌"
+		icon = "[X]"
 	} else if check.Warning {
 		status = "WARNING"
-		icon = "⚠️ "
+		icon = "[!]"
 	} else {
 		status = "OK"
-		icon = "✓"
+		icon = "[+]"
 	}
 
-	msg := fmt.Sprintf(`📊 Disk Space Check (%s):
+	msg := fmt.Sprintf(`[DISK] Disk Space Check (%s):
    Path: %s
    Total: %s
    Available: %s (%.1f%% used)
@@ -98,13 +98,13 @@ func FormatDiskSpaceMessage(check *DiskSpaceCheck) string {
 		status)
 
 	if check.Critical {
-		msg += "\n   \n   ⚠️  CRITICAL: Insufficient disk space!"
+		msg += "\n   \n   [!!] CRITICAL: Insufficient disk space!"
 		msg += "\n   Operation blocked. Free up space before continuing."
 	} else if check.Warning {
-		msg += "\n   \n   ⚠️  WARNING: Low disk space!"
+		msg += "\n   \n   [!] WARNING: Low disk space!"
 		msg += "\n   Backup may fail if database is larger than estimated."
 	} else {
-		msg += "\n   \n   ✓ Sufficient space available"
+		msg += "\n   \n   [+] Sufficient space available"
 	}
 
 	return msg

internal/checks/disk_check_netbsd.go

@@ -58,16 +58,16 @@ func FormatDiskSpaceMessage(check *DiskSpaceCheck) string {
 
 	if check.Critical {
 		status = "CRITICAL"
-		icon = "❌"
+		icon = "[X]"
 	} else if check.Warning {
 		status = "WARNING"
-		icon = "⚠️ "
+		icon = "[!]"
 	} else {
 		status = "OK"
-		icon = "✓"
+		icon = "[+]"
 	}
 
-	msg := fmt.Sprintf(`📊 Disk Space Check (%s):
+	msg := fmt.Sprintf(`[DISK] Disk Space Check (%s):
    Path: %s
    Total: %s
    Available: %s (%.1f%% used)
@@ -81,13 +81,13 @@ func FormatDiskSpaceMessage(check *DiskSpaceCheck) string {
 		status)
 
 	if check.Critical {
-		msg += "\n   \n   ⚠️  CRITICAL: Insufficient disk space!"
+		msg += "\n   \n   [!!] CRITICAL: Insufficient disk space!"
 		msg += "\n   Operation blocked. Free up space before continuing."
 	} else if check.Warning {
-		msg += "\n   \n   ⚠️  WARNING: Low disk space!"
+		msg += "\n   \n   [!] WARNING: Low disk space!"
 		msg += "\n   Backup may fail if database is larger than estimated."
 	} else {
-		msg += "\n   \n   ✓ Sufficient space available"
+		msg += "\n   \n   [+] Sufficient space available"
 	}
 
 	return msg

internal/checks/disk_check_windows.go

@@ -94,16 +94,16 @@ func FormatDiskSpaceMessage(check *DiskSpaceCheck) string {
 
 	if check.Critical {
 		status = "CRITICAL"
-		icon = "❌"
+		icon = "[X]"
 	} else if check.Warning {
 		status = "WARNING"
-		icon = "⚠️ "
+		icon = "[!]"
 	} else {
 		status = "OK"
-		icon = "✓"
+		icon = "[+]"
 	}
 
-	msg := fmt.Sprintf(`📊 Disk Space Check (%s):
+	msg := fmt.Sprintf(`[DISK] Disk Space Check (%s):
    Path: %s
    Total: %s
    Available: %s (%.1f%% used)
@@ -117,13 +117,13 @@ func FormatDiskSpaceMessage(check *DiskSpaceCheck) string {
 		status)
 
 	if check.Critical {
-		msg += "\n   \n   ⚠️  CRITICAL: Insufficient disk space!"
+		msg += "\n   \n   [!!] CRITICAL: Insufficient disk space!"
 		msg += "\n   Operation blocked. Free up space before continuing."
 	} else if check.Warning {
-		msg += "\n   \n   ⚠️  WARNING: Low disk space!"
+		msg += "\n   \n   [!] WARNING: Low disk space!"
 		msg += "\n   Backup may fail if database is larger than estimated."
 	} else {
-		msg += "\n   \n   ✓ Sufficient space available"
+		msg += "\n   \n   [+] Sufficient space available"
 	}
 
 	return msg

internal/checks/error_hints.go

@@ -68,8 +68,8 @@ func ClassifyError(errorMsg string) *ErrorClassification {
 			Type:     "critical",
 			Category: "locks",
 			Message:  errorMsg,
-			Hint:     "Lock table exhausted - typically caused by large objects in parallel restore",
-			Action:   "Increase max_locks_per_transaction in postgresql.conf to 512 or higher",
+			Hint:     "Lock table exhausted. Total capacity = max_locks_per_transaction × (max_connections + max_prepared_transactions). If you reduced VM size or max_connections, you need higher max_locks_per_transaction to compensate.",
+			Action:   "Fix: ALTER SYSTEM SET max_locks_per_transaction = 4096; then RESTART PostgreSQL. For smaller VMs with fewer connections, you need higher max_locks_per_transaction values.",
 			Severity: 2,
 		}
 	case "permission_denied":
@@ -142,8 +142,8 @@ func ClassifyError(errorMsg string) *ErrorClassification {
 			Type:     "critical",
 			Category: "locks",
 			Message:  errorMsg,
-			Hint:     "Lock table exhausted - typically caused by large objects in parallel restore",
-			Action:   "Increase max_locks_per_transaction in postgresql.conf to 512 or higher",
+			Hint:     "Lock table exhausted. Total capacity = max_locks_per_transaction × (max_connections + max_prepared_transactions). If you reduced VM size or max_connections, you need higher max_locks_per_transaction to compensate.",
+			Action:   "Fix: ALTER SYSTEM SET max_locks_per_transaction = 4096; then RESTART PostgreSQL. For smaller VMs with fewer connections, you need higher max_locks_per_transaction values.",
 			Severity: 2,
 		}
 	}
@@ -234,22 +234,22 @@ func FormatErrorWithHint(errorMsg string) string {
 	var icon string
 	switch classification.Type {
 	case "ignorable":
-		icon = "ℹ️ "
+		icon = "[i]"
 	case "warning":
-		icon = "⚠️ "
+		icon = "[!]"
 	case "critical":
-		icon = "❌"
+		icon = "[X]"
 	case "fatal":
-		icon = "🛑"
+		icon = "[!!]"
 	default:
-		icon = "⚠️ "
+		icon = "[!]"
 	}
 
 	output := fmt.Sprintf("%s %s Error\n\n", icon, strings.ToUpper(classification.Type))
 	output += fmt.Sprintf("Category: %s\n", classification.Category)
 	output += fmt.Sprintf("Message: %s\n\n", classification.Message)
-	output += fmt.Sprintf("💡 Hint: %s\n\n", classification.Hint)
-	output += fmt.Sprintf("🔧 Action: %s\n", classification.Action)
+	output += fmt.Sprintf("[HINT] Hint: %s\n\n", classification.Hint)
+	output += fmt.Sprintf("[ACTION] Action: %s\n", classification.Action)
 
 	return output
 }
@@ -257,7 +257,7 @@ func FormatErrorWithHint(errorMsg string) string {
 // FormatMultipleErrors formats multiple errors with classification
 func FormatMultipleErrors(errors []string) string {
 	if len(errors) == 0 {
-		return "✓ No errors"
+		return "[+] No errors"
 	}
 
 	ignorable := 0
@@ -285,22 +285,22 @@ func FormatMultipleErrors(errors []string) string {
 		}
 	}
 
-	output := "📊 Error Summary:\n\n"
+	output := "[SUMMARY] Error Summary:\n\n"
 	if ignorable > 0 {
-		output += fmt.Sprintf("   ℹ️  %d ignorable (objects already exist)\n", ignorable)
+		output += fmt.Sprintf("   [i] %d ignorable (objects already exist)\n", ignorable)
 	}
 	if warnings > 0 {
-		output += fmt.Sprintf("   ⚠️  %d warnings\n", warnings)
+		output += fmt.Sprintf("   [!] %d warnings\n", warnings)
 	}
 	if critical > 0 {
-		output += fmt.Sprintf("   ❌ %d critical errors\n", critical)
+		output += fmt.Sprintf("   [X] %d critical errors\n", critical)
 	}
 	if fatal > 0 {
-		output += fmt.Sprintf("   🛑 %d fatal errors\n", fatal)
+		output += fmt.Sprintf("   [!!] %d fatal errors\n", fatal)
 	}
 
 	if len(criticalErrors) > 0 {
-		output += "\n📝 Critical Issues:\n\n"
+		output += "\n[CRITICAL] Critical Issues:\n\n"
 		for i, err := range criticalErrors {
 			class := ClassifyError(err)
 			output += fmt.Sprintf("%d. %s\n", i+1, class.Hint)

internal/checks/preflight.go

@@ -49,15 +49,15 @@ func (s CheckStatus) String() string {
 func (s CheckStatus) Icon() string {
 	switch s {
 	case StatusPassed:
-		return "✓"
+		return "[+]"
 	case StatusWarning:
-		return "⚠"
+		return "[!]"
 	case StatusFailed:
-		return "✗"
+		return "[-]"
 	case StatusSkipped:
-		return "○"
+		return "[ ]"
 	default:
-		return "?"
+		return "[?]"
 	}
 }
 

internal/checks/report.go

@@ -11,9 +11,9 @@ func FormatPreflightReport(result *PreflightResult, dbName string, verbose bool)
 	var sb strings.Builder
 
 	sb.WriteString("\n")
-	sb.WriteString("╔══════════════════════════════════════════════════════════════╗\n")
-	sb.WriteString("║             [DRY RUN] Preflight Check Results                ║\n")
-	sb.WriteString("╚══════════════════════════════════════════════════════════════╝\n")
+	sb.WriteString("+==============================================================+\n")
+	sb.WriteString("|             [DRY RUN] Preflight Check Results                |\n")
+	sb.WriteString("+==============================================================+\n")
 	sb.WriteString("\n")
 
 	// Database info
@@ -29,7 +29,7 @@ func FormatPreflightReport(result *PreflightResult, dbName string, verbose bool)
 
 	// Check results
 	sb.WriteString("  Checks:\n")
-	sb.WriteString("  ─────────────────────────────────────────────────────────────\n")
+	sb.WriteString("  --------------------------------------------------------------\n")
 
 	for _, check := range result.Checks {
 		icon := check.Status.Icon()
@@ -40,26 +40,26 @@ func FormatPreflightReport(result *PreflightResult, dbName string, verbose bool)
 			color, icon, reset, check.Name+":", check.Message))
 
 		if verbose && check.Details != "" {
-			sb.WriteString(fmt.Sprintf("      └─ %s\n", check.Details))
+			sb.WriteString(fmt.Sprintf("      +- %s\n", check.Details))
 		}
 	}
 
-	sb.WriteString("  ─────────────────────────────────────────────────────────────\n")
+	sb.WriteString("  --------------------------------------------------------------\n")
 	sb.WriteString("\n")
 
 	// Summary
 	if result.AllPassed {
 		if result.HasWarnings {
-			sb.WriteString("  ⚠️  All checks passed with warnings\n")
+			sb.WriteString("  [!] All checks passed with warnings\n")
 			sb.WriteString("\n")
 			sb.WriteString("  Ready to backup. Remove --dry-run to execute.\n")
 		} else {
-			sb.WriteString("  ✅ All checks passed\n")
+			sb.WriteString("  [OK] All checks passed\n")
 			sb.WriteString("\n")
 			sb.WriteString("  Ready to backup. Remove --dry-run to execute.\n")
 		}
 	} else {
-		sb.WriteString(fmt.Sprintf("  ❌ %d check(s) failed\n", result.FailureCount))
+		sb.WriteString(fmt.Sprintf("  [FAIL] %d check(s) failed\n", result.FailureCount))
 		sb.WriteString("\n")
 		sb.WriteString("  Fix the issues above before running backup.\n")
 	}
@@ -96,7 +96,7 @@ func FormatPreflightReportPlain(result *PreflightResult, dbName string) string {
 		status := fmt.Sprintf("[%s]", check.Status.String())
 		sb.WriteString(fmt.Sprintf("  %-10s %-25s %s\n", status, check.Name+":", check.Message))
 		if check.Details != "" {
-			sb.WriteString(fmt.Sprintf("             └─ %s\n", check.Details))
+			sb.WriteString(fmt.Sprintf("             +- %s\n", check.Details))
 		}
 	}
 

internal/cleanup/processes.go

@@ -12,6 +12,7 @@ import (
 	"strings"
 	"sync"
 	"syscall"
+	"time"
 
 	"dbbackup/internal/logger"
 )
@@ -116,8 +117,11 @@ func KillOrphanedProcesses(log logger.Logger) error {
 
 // findProcessesByName returns PIDs of processes matching the given name
 func findProcessesByName(name string, excludePID int) ([]int, error) {
-	// Use pgrep for efficient process searching
-	cmd := exec.Command("pgrep", "-x", name)
+	// Use pgrep for efficient process searching with timeout
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	cmd := exec.CommandContext(ctx, "pgrep", "-x", name)
 	output, err := cmd.Output()
 	if err != nil {
 		// Exit code 1 means no processes found (not an error)

internal/cloud/azure.go

@@ -90,7 +90,7 @@ func NewAzureBackend(cfg *Config) (*AzureBackend, error) {
 			}
 		} else {
 			// Use default Azure credential (managed identity, environment variables, etc.)
-			return nil, fmt.Errorf("Azure authentication requires account name and key, or use AZURE_STORAGE_CONNECTION_STRING environment variable")
+			return nil, fmt.Errorf("azure authentication requires account name and key, or use AZURE_STORAGE_CONNECTION_STRING environment variable")
 		}
 	}
 
@@ -151,37 +151,46 @@ func (a *AzureBackend) Upload(ctx context.Context, localPath, remotePath string,
 	return a.uploadSimple(ctx, file, blobName, fileSize, progress)
 }
 
-// uploadSimple uploads a file using simple upload (single request)
+// uploadSimple uploads a file using simple upload (single request) with retry
 func (a *AzureBackend) uploadSimple(ctx context.Context, file *os.File, blobName string, fileSize int64, progress ProgressCallback) error {
-	blockBlobClient := a.client.ServiceClient().NewContainerClient(a.containerName).NewBlockBlobClient(blobName)
+	return RetryOperationWithNotify(ctx, DefaultRetryConfig(), func() error {
+		// Reset file position for retry
+		if _, err := file.Seek(0, 0); err != nil {
+			return fmt.Errorf("failed to reset file position: %w", err)
+		}
 
-	// Wrap reader with progress tracking
-	reader := NewProgressReader(file, fileSize, progress)
+		blockBlobClient := a.client.ServiceClient().NewContainerClient(a.containerName).NewBlockBlobClient(blobName)
 
-	// Calculate MD5 hash for integrity
-	hash := sha256.New()
-	teeReader := io.TeeReader(reader, hash)
+		// Wrap reader with progress tracking
+		reader := NewProgressReader(file, fileSize, progress)
 
-	_, err := blockBlobClient.UploadStream(ctx, teeReader, &blockblob.UploadStreamOptions{
-		BlockSize: 4 * 1024 * 1024, // 4MB blocks
+		// Calculate MD5 hash for integrity
+		hash := sha256.New()
+		teeReader := io.TeeReader(reader, hash)
+
+		_, err := blockBlobClient.UploadStream(ctx, teeReader, &blockblob.UploadStreamOptions{
+			BlockSize: 4 * 1024 * 1024, // 4MB blocks
+		})
+		if err != nil {
+			return fmt.Errorf("failed to upload blob: %w", err)
+		}
+
+		// Store checksum as metadata
+		checksum := hex.EncodeToString(hash.Sum(nil))
+		metadata := map[string]*string{
+			"sha256": &checksum,
+		}
+
+		_, err = blockBlobClient.SetMetadata(ctx, metadata, nil)
+		if err != nil {
+			// Non-fatal: upload succeeded but metadata failed
+			fmt.Fprintf(os.Stderr, "Warning: failed to set blob metadata: %v\n", err)
+		}
+
+		return nil
+	}, func(err error, duration time.Duration) {
+		fmt.Printf("[Azure] Upload retry in %v: %v\n", duration, err)
 	})
-	if err != nil {
-		return fmt.Errorf("failed to upload blob: %w", err)
-	}
-
-	// Store checksum as metadata
-	checksum := hex.EncodeToString(hash.Sum(nil))
-	metadata := map[string]*string{
-		"sha256": &checksum,
-	}
-
-	_, err = blockBlobClient.SetMetadata(ctx, metadata, nil)
-	if err != nil {
-		// Non-fatal: upload succeeded but metadata failed
-		fmt.Fprintf(os.Stderr, "Warning: failed to set blob metadata: %v\n", err)
-	}
-
-	return nil
 }
 
 // uploadBlocks uploads a file using block blob staging (for large files)
@@ -251,7 +260,7 @@ func (a *AzureBackend) uploadBlocks(ctx context.Context, file *os.File, blobName
 	return nil
 }
 
-// Download downloads a file from Azure Blob Storage
+// Download downloads a file from Azure Blob Storage with retry
 func (a *AzureBackend) Download(ctx context.Context, remotePath, localPath string, progress ProgressCallback) error {
 	blobName := strings.TrimPrefix(remotePath, "/")
 	blockBlobClient := a.client.ServiceClient().NewContainerClient(a.containerName).NewBlockBlobClient(blobName)
@@ -264,30 +273,34 @@ func (a *AzureBackend) Download(ctx context.Context, remotePath, localPath strin
 
 	fileSize := *props.ContentLength
 
-	// Download blob
-	resp, err := blockBlobClient.DownloadStream(ctx, nil)
-	if err != nil {
-		return fmt.Errorf("failed to download blob: %w", err)
-	}
-	defer resp.Body.Close()
+	return RetryOperationWithNotify(ctx, DefaultRetryConfig(), func() error {
+		// Download blob
+		resp, err := blockBlobClient.DownloadStream(ctx, nil)
+		if err != nil {
+			return fmt.Errorf("failed to download blob: %w", err)
+		}
+		defer resp.Body.Close()
 
-	// Create local file
-	file, err := os.Create(localPath)
-	if err != nil {
-		return fmt.Errorf("failed to create file: %w", err)
-	}
-	defer file.Close()
+		// Create/truncate local file
+		file, err := os.Create(localPath)
+		if err != nil {
+			return fmt.Errorf("failed to create file: %w", err)
+		}
+		defer file.Close()
 
-	// Wrap reader with progress tracking
-	reader := NewProgressReader(resp.Body, fileSize, progress)
+		// Wrap reader with progress tracking
+		reader := NewProgressReader(resp.Body, fileSize, progress)
 
-	// Copy with progress
-	_, err = io.Copy(file, reader)
-	if err != nil {
-		return fmt.Errorf("failed to write file: %w", err)
-	}
+		// Copy with progress
+		_, err = io.Copy(file, reader)
+		if err != nil {
+			return fmt.Errorf("failed to write file: %w", err)
+		}
 
-	return nil
+		return nil
+	}, func(err error, duration time.Duration) {
+		fmt.Printf("[Azure] Download retry in %v: %v\n", duration, err)
+	})
 }
 
 // Delete deletes a file from Azure Blob Storage

internal/cloud/gcs.go

@@ -89,7 +89,7 @@ func (g *GCSBackend) Name() string {
 	return "gcs"
 }
 
-// Upload uploads a file to Google Cloud Storage
+// Upload uploads a file to Google Cloud Storage with retry
 func (g *GCSBackend) Upload(ctx context.Context, localPath, remotePath string, progress ProgressCallback) error {
 	file, err := os.Open(localPath)
 	if err != nil {
@@ -106,45 +106,54 @@ func (g *GCSBackend) Upload(ctx context.Context, localPath, remotePath string, p
 	// Remove leading slash from remote path
 	objectName := strings.TrimPrefix(remotePath, "/")
 
-	bucket := g.client.Bucket(g.bucketName)
-	object := bucket.Object(objectName)
+	return RetryOperationWithNotify(ctx, DefaultRetryConfig(), func() error {
+		// Reset file position for retry
+		if _, err := file.Seek(0, 0); err != nil {
+			return fmt.Errorf("failed to reset file position: %w", err)
+		}
 
-	// Create writer with automatic chunking for large files
-	writer := object.NewWriter(ctx)
-	writer.ChunkSize = 16 * 1024 * 1024 // 16MB chunks for streaming
+		bucket := g.client.Bucket(g.bucketName)
+		object := bucket.Object(objectName)
 
-	// Wrap reader with progress tracking and hash calculation
-	hash := sha256.New()
-	reader := NewProgressReader(io.TeeReader(file, hash), fileSize, progress)
+		// Create writer with automatic chunking for large files
+		writer := object.NewWriter(ctx)
+		writer.ChunkSize = 16 * 1024 * 1024 // 16MB chunks for streaming
 
-	// Upload with progress tracking
-	_, err = io.Copy(writer, reader)
-	if err != nil {
-		writer.Close()
-		return fmt.Errorf("failed to upload object: %w", err)
-	}
+		// Wrap reader with progress tracking and hash calculation
+		hash := sha256.New()
+		reader := NewProgressReader(io.TeeReader(file, hash), fileSize, progress)
 
-	// Close writer (finalizes upload)
-	if err := writer.Close(); err != nil {
-		return fmt.Errorf("failed to finalize upload: %w", err)
-	}
+		// Upload with progress tracking
+		_, err = io.Copy(writer, reader)
+		if err != nil {
+			writer.Close()
+			return fmt.Errorf("failed to upload object: %w", err)
+		}
 
-	// Store checksum as metadata
-	checksum := hex.EncodeToString(hash.Sum(nil))
-	_, err = object.Update(ctx, storage.ObjectAttrsToUpdate{
-		Metadata: map[string]string{
-			"sha256": checksum,
-		},
+		// Close writer (finalizes upload)
+		if err := writer.Close(); err != nil {
+			return fmt.Errorf("failed to finalize upload: %w", err)
+		}
+
+		// Store checksum as metadata
+		checksum := hex.EncodeToString(hash.Sum(nil))
+		_, err = object.Update(ctx, storage.ObjectAttrsToUpdate{
+			Metadata: map[string]string{
+				"sha256": checksum,
+			},
+		})
+		if err != nil {
+			// Non-fatal: upload succeeded but metadata failed
+			fmt.Fprintf(os.Stderr, "Warning: failed to set object metadata: %v\n", err)
+		}
+
+		return nil
+	}, func(err error, duration time.Duration) {
+		fmt.Printf("[GCS] Upload retry in %v: %v\n", duration, err)
 	})
-	if err != nil {
-		// Non-fatal: upload succeeded but metadata failed
-		fmt.Fprintf(os.Stderr, "Warning: failed to set object metadata: %v\n", err)
-	}
-
-	return nil
 }
 
-// Download downloads a file from Google Cloud Storage
+// Download downloads a file from Google Cloud Storage with retry
 func (g *GCSBackend) Download(ctx context.Context, remotePath, localPath string, progress ProgressCallback) error {
 	objectName := strings.TrimPrefix(remotePath, "/")
 
@@ -159,30 +168,34 @@ func (g *GCSBackend) Download(ctx context.Context, remotePath, localPath string,
 
 	fileSize := attrs.Size
 
-	// Create reader
-	reader, err := object.NewReader(ctx)
-	if err != nil {
-		return fmt.Errorf("failed to download object: %w", err)
-	}
-	defer reader.Close()
+	return RetryOperationWithNotify(ctx, DefaultRetryConfig(), func() error {
+		// Create reader
+		reader, err := object.NewReader(ctx)
+		if err != nil {
+			return fmt.Errorf("failed to download object: %w", err)
+		}
+		defer reader.Close()
 
-	// Create local file
-	file, err := os.Create(localPath)
-	if err != nil {
-		return fmt.Errorf("failed to create file: %w", err)
-	}
-	defer file.Close()
+		// Create/truncate local file
+		file, err := os.Create(localPath)
+		if err != nil {
+			return fmt.Errorf("failed to create file: %w", err)
+		}
+		defer file.Close()
 
-	// Wrap reader with progress tracking
-	progressReader := NewProgressReader(reader, fileSize, progress)
+		// Wrap reader with progress tracking
+		progressReader := NewProgressReader(reader, fileSize, progress)
 
-	// Copy with progress
-	_, err = io.Copy(file, progressReader)
-	if err != nil {
-		return fmt.Errorf("failed to write file: %w", err)
-	}
+		// Copy with progress
+		_, err = io.Copy(file, progressReader)
+		if err != nil {
+			return fmt.Errorf("failed to write file: %w", err)
+		}
 
-	return nil
+		return nil
+	}, func(err error, duration time.Duration) {
+		fmt.Printf("[GCS] Download retry in %v: %v\n", duration, err)
+	})
 }
 
 // Delete deletes a file from Google Cloud Storage

internal/cloud/retry.go

@@ -0,0 +1,257 @@
+package cloud
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"strings"
+	"time"
+
+	"github.com/cenkalti/backoff/v4"
+)
+
+// RetryConfig configures retry behavior
+type RetryConfig struct {
+	MaxRetries      int           // Maximum number of retries (0 = unlimited)
+	InitialInterval time.Duration // Initial backoff interval
+	MaxInterval     time.Duration // Maximum backoff interval
+	MaxElapsedTime  time.Duration // Maximum total time for retries
+	Multiplier      float64       // Backoff multiplier
+}
+
+// DefaultRetryConfig returns sensible defaults for cloud operations
+func DefaultRetryConfig() *RetryConfig {
+	return &RetryConfig{
+		MaxRetries:      5,
+		InitialInterval: 500 * time.Millisecond,
+		MaxInterval:     30 * time.Second,
+		MaxElapsedTime:  5 * time.Minute,
+		Multiplier:      2.0,
+	}
+}
+
+// AggressiveRetryConfig returns config for critical operations that need more retries
+func AggressiveRetryConfig() *RetryConfig {
+	return &RetryConfig{
+		MaxRetries:      10,
+		InitialInterval: 1 * time.Second,
+		MaxInterval:     60 * time.Second,
+		MaxElapsedTime:  15 * time.Minute,
+		Multiplier:      1.5,
+	}
+}
+
+// QuickRetryConfig returns config for operations that should fail fast
+func QuickRetryConfig() *RetryConfig {
+	return &RetryConfig{
+		MaxRetries:      3,
+		InitialInterval: 100 * time.Millisecond,
+		MaxInterval:     5 * time.Second,
+		MaxElapsedTime:  30 * time.Second,
+		Multiplier:      2.0,
+	}
+}
+
+// RetryOperation executes an operation with exponential backoff retry
+func RetryOperation(ctx context.Context, cfg *RetryConfig, operation func() error) error {
+	if cfg == nil {
+		cfg = DefaultRetryConfig()
+	}
+
+	// Create exponential backoff
+	expBackoff := backoff.NewExponentialBackOff()
+	expBackoff.InitialInterval = cfg.InitialInterval
+	expBackoff.MaxInterval = cfg.MaxInterval
+	expBackoff.MaxElapsedTime = cfg.MaxElapsedTime
+	expBackoff.Multiplier = cfg.Multiplier
+	expBackoff.Reset()
+
+	// Wrap with max retries if specified
+	var b backoff.BackOff = expBackoff
+	if cfg.MaxRetries > 0 {
+		b = backoff.WithMaxRetries(expBackoff, uint64(cfg.MaxRetries))
+	}
+
+	// Add context support
+	b = backoff.WithContext(b, ctx)
+
+	// Track attempts for logging
+	attempt := 0
+
+	// Wrap operation to handle permanent vs retryable errors
+	wrappedOp := func() error {
+		attempt++
+		err := operation()
+		if err == nil {
+			return nil
+		}
+
+		// Check if error is permanent (should not retry)
+		if IsPermanentError(err) {
+			return backoff.Permanent(err)
+		}
+
+		return err
+	}
+
+	return backoff.Retry(wrappedOp, b)
+}
+
+// RetryOperationWithNotify executes an operation with retry and calls notify on each retry
+func RetryOperationWithNotify(ctx context.Context, cfg *RetryConfig, operation func() error, notify func(err error, duration time.Duration)) error {
+	if cfg == nil {
+		cfg = DefaultRetryConfig()
+	}
+
+	// Create exponential backoff
+	expBackoff := backoff.NewExponentialBackOff()
+	expBackoff.InitialInterval = cfg.InitialInterval
+	expBackoff.MaxInterval = cfg.MaxInterval
+	expBackoff.MaxElapsedTime = cfg.MaxElapsedTime
+	expBackoff.Multiplier = cfg.Multiplier
+	expBackoff.Reset()
+
+	// Wrap with max retries if specified
+	var b backoff.BackOff = expBackoff
+	if cfg.MaxRetries > 0 {
+		b = backoff.WithMaxRetries(expBackoff, uint64(cfg.MaxRetries))
+	}
+
+	// Add context support
+	b = backoff.WithContext(b, ctx)
+
+	// Wrap operation to handle permanent vs retryable errors
+	wrappedOp := func() error {
+		err := operation()
+		if err == nil {
+			return nil
+		}
+
+		// Check if error is permanent (should not retry)
+		if IsPermanentError(err) {
+			return backoff.Permanent(err)
+		}
+
+		return err
+	}
+
+	return backoff.RetryNotify(wrappedOp, b, notify)
+}
+
+// IsPermanentError returns true if the error should not be retried
+func IsPermanentError(err error) bool {
+	if err == nil {
+		return false
+	}
+
+	errStr := strings.ToLower(err.Error())
+
+	// Authentication/authorization errors - don't retry
+	permanentPatterns := []string{
+		"access denied",
+		"forbidden",
+		"unauthorized",
+		"invalid credentials",
+		"invalid access key",
+		"invalid secret",
+		"no such bucket",
+		"bucket not found",
+		"container not found",
+		"nosuchbucket",
+		"nosuchkey",
+		"invalid argument",
+		"malformed",
+		"invalid request",
+		"permission denied",
+		"access control",
+		"policy",
+	}
+
+	for _, pattern := range permanentPatterns {
+		if strings.Contains(errStr, pattern) {
+			return true
+		}
+	}
+
+	return false
+}
+
+// IsRetryableError returns true if the error is transient and should be retried
+func IsRetryableError(err error) bool {
+	if err == nil {
+		return false
+	}
+
+	// Network errors are typically retryable
+	var netErr net.Error
+	if ok := isNetError(err, &netErr); ok {
+		return netErr.Timeout() || netErr.Temporary()
+	}
+
+	errStr := strings.ToLower(err.Error())
+
+	// Transient errors - should retry
+	retryablePatterns := []string{
+		"timeout",
+		"connection reset",
+		"connection refused",
+		"connection closed",
+		"eof",
+		"broken pipe",
+		"temporary failure",
+		"service unavailable",
+		"internal server error",
+		"bad gateway",
+		"gateway timeout",
+		"too many requests",
+		"rate limit",
+		"throttl",
+		"slowdown",
+		"try again",
+		"retry",
+	}
+
+	for _, pattern := range retryablePatterns {
+		if strings.Contains(errStr, pattern) {
+			return true
+		}
+	}
+
+	return false
+}
+
+// isNetError checks if err wraps a net.Error
+func isNetError(err error, target *net.Error) bool {
+	for err != nil {
+		if ne, ok := err.(net.Error); ok {
+			*target = ne
+			return true
+		}
+		// Try to unwrap
+		if unwrapper, ok := err.(interface{ Unwrap() error }); ok {
+			err = unwrapper.Unwrap()
+		} else {
+			break
+		}
+	}
+	return false
+}
+
+// WithRetry is a helper that wraps a function with default retry logic
+func WithRetry(ctx context.Context, operationName string, fn func() error) error {
+	notify := func(err error, duration time.Duration) {
+		// Log retry attempts (caller can provide their own logger if needed)
+		fmt.Printf("[RETRY] %s failed, retrying in %v: %v\n", operationName, duration, err)
+	}
+
+	return RetryOperationWithNotify(ctx, DefaultRetryConfig(), fn, notify)
+}
+
+// WithRetryConfig is a helper that wraps a function with custom retry config
+func WithRetryConfig(ctx context.Context, cfg *RetryConfig, operationName string, fn func() error) error {
+	notify := func(err error, duration time.Duration) {
+		fmt.Printf("[RETRY] %s failed, retrying in %v: %v\n", operationName, duration, err)
+	}
+
+	return RetryOperationWithNotify(ctx, cfg, fn, notify)
+}

internal/cloud/s3.go

@@ -7,6 +7,7 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+	"time"
 
 	"github.com/aws/aws-sdk-go-v2/aws"
 	"github.com/aws/aws-sdk-go-v2/config"
@@ -123,63 +124,81 @@ func (s *S3Backend) Upload(ctx context.Context, localPath, remotePath string, pr
 	return s.uploadSimple(ctx, file, key, fileSize, progress)
 }
 
-// uploadSimple performs a simple single-part upload
+// uploadSimple performs a simple single-part upload with retry
 func (s *S3Backend) uploadSimple(ctx context.Context, file *os.File, key string, fileSize int64, progress ProgressCallback) error {
-	// Create progress reader
-	var reader io.Reader = file
-	if progress != nil {
-		reader = NewProgressReader(file, fileSize, progress)
-	}
+	return RetryOperationWithNotify(ctx, DefaultRetryConfig(), func() error {
+		// Reset file position for retry
+		if _, err := file.Seek(0, 0); err != nil {
+			return fmt.Errorf("failed to reset file position: %w", err)
+		}
 
-	// Upload to S3
-	_, err := s.client.PutObject(ctx, &s3.PutObjectInput{
-		Bucket: aws.String(s.bucket),
-		Key:    aws.String(key),
-		Body:   reader,
+		// Create progress reader
+		var reader io.Reader = file
+		if progress != nil {
+			reader = NewProgressReader(file, fileSize, progress)
+		}
+
+		// Upload to S3
+		_, err := s.client.PutObject(ctx, &s3.PutObjectInput{
+			Bucket: aws.String(s.bucket),
+			Key:    aws.String(key),
+			Body:   reader,
+		})
+
+		if err != nil {
+			return fmt.Errorf("failed to upload to S3: %w", err)
+		}
+
+		return nil
+	}, func(err error, duration time.Duration) {
+		fmt.Printf("[S3] Upload retry in %v: %v\n", duration, err)
 	})
-
-	if err != nil {
-		return fmt.Errorf("failed to upload to S3: %w", err)
-	}
-
-	return nil
 }
 
-// uploadMultipart performs a multipart upload for large files
+// uploadMultipart performs a multipart upload for large files with retry
 func (s *S3Backend) uploadMultipart(ctx context.Context, file *os.File, key string, fileSize int64, progress ProgressCallback) error {
-	// Create uploader with custom options
-	uploader := manager.NewUploader(s.client, func(u *manager.Uploader) {
-		// Part size: 10MB
-		u.PartSize = 10 * 1024 * 1024
+	return RetryOperationWithNotify(ctx, AggressiveRetryConfig(), func() error {
+		// Reset file position for retry
+		if _, err := file.Seek(0, 0); err != nil {
+			return fmt.Errorf("failed to reset file position: %w", err)
+		}
 
-		// Upload up to 10 parts concurrently
-		u.Concurrency = 10
+		// Create uploader with custom options
+		uploader := manager.NewUploader(s.client, func(u *manager.Uploader) {
+			// Part size: 10MB
+			u.PartSize = 10 * 1024 * 1024
 
-		// Leave parts on failure for debugging
-		u.LeavePartsOnError = false
+			// Upload up to 10 parts concurrently
+			u.Concurrency = 10
+
+			// Leave parts on failure for debugging
+			u.LeavePartsOnError = false
+		})
+
+		// Wrap file with progress reader
+		var reader io.Reader = file
+		if progress != nil {
+			reader = NewProgressReader(file, fileSize, progress)
+		}
+
+		// Upload with multipart
+		_, err := uploader.Upload(ctx, &s3.PutObjectInput{
+			Bucket: aws.String(s.bucket),
+			Key:    aws.String(key),
+			Body:   reader,
+		})
+
+		if err != nil {
+			return fmt.Errorf("multipart upload failed: %w", err)
+		}
+
+		return nil
+	}, func(err error, duration time.Duration) {
+		fmt.Printf("[S3] Multipart upload retry in %v: %v\n", duration, err)
 	})
-
-	// Wrap file with progress reader
-	var reader io.Reader = file
-	if progress != nil {
-		reader = NewProgressReader(file, fileSize, progress)
-	}
-
-	// Upload with multipart
-	_, err := uploader.Upload(ctx, &s3.PutObjectInput{
-		Bucket: aws.String(s.bucket),
-		Key:    aws.String(key),
-		Body:   reader,
-	})
-
-	if err != nil {
-		return fmt.Errorf("multipart upload failed: %w", err)
-	}
-
-	return nil
 }
 
-// Download downloads a file from S3
+// Download downloads a file from S3 with retry
 func (s *S3Backend) Download(ctx context.Context, remotePath, localPath string, progress ProgressCallback) error {
 	// Build S3 key
 	key := s.buildKey(remotePath)
@@ -190,39 +209,44 @@ func (s *S3Backend) Download(ctx context.Context, remotePath, localPath string,
 		return fmt.Errorf("failed to get object size: %w", err)
 	}
 
-	// Download from S3
-	result, err := s.client.GetObject(ctx, &s3.GetObjectInput{
-		Bucket: aws.String(s.bucket),
-		Key:    aws.String(key),
-	})
-	if err != nil {
-		return fmt.Errorf("failed to download from S3: %w", err)
-	}
-	defer result.Body.Close()
-
-	// Create local file
+	// Create directory for local file
 	if err := os.MkdirAll(filepath.Dir(localPath), 0755); err != nil {
 		return fmt.Errorf("failed to create directory: %w", err)
 	}
 
-	outFile, err := os.Create(localPath)
-	if err != nil {
-		return fmt.Errorf("failed to create local file: %w", err)
-	}
-	defer outFile.Close()
+	return RetryOperationWithNotify(ctx, DefaultRetryConfig(), func() error {
+		// Download from S3
+		result, err := s.client.GetObject(ctx, &s3.GetObjectInput{
+			Bucket: aws.String(s.bucket),
+			Key:    aws.String(key),
+		})
+		if err != nil {
+			return fmt.Errorf("failed to download from S3: %w", err)
+		}
+		defer result.Body.Close()
 
-	// Copy with progress tracking
-	var reader io.Reader = result.Body
-	if progress != nil {
-		reader = NewProgressReader(result.Body, size, progress)
-	}
+		// Create/truncate local file
+		outFile, err := os.Create(localPath)
+		if err != nil {
+			return fmt.Errorf("failed to create local file: %w", err)
+		}
+		defer outFile.Close()
 
-	_, err = io.Copy(outFile, reader)
-	if err != nil {
-		return fmt.Errorf("failed to write file: %w", err)
-	}
+		// Copy with progress tracking
+		var reader io.Reader = result.Body
+		if progress != nil {
+			reader = NewProgressReader(result.Body, size, progress)
+		}
 
-	return nil
+		_, err = io.Copy(outFile, reader)
+		if err != nil {
+			return fmt.Errorf("failed to write file: %w", err)
+		}
+
+		return nil
+	}, func(err error, duration time.Duration) {
+		fmt.Printf("[S3] Download retry in %v: %v\n", duration, err)
+	})
 }
 
 // List lists all backup files in S3

internal/config/config.go

@@ -36,19 +36,25 @@ type Config struct {
 	AutoDetectCores  bool
 	CPUWorkloadType  string // "cpu-intensive", "io-intensive", "balanced"
 
+	// Resource profile for backup/restore operations
+	ResourceProfile string // "conservative", "balanced", "performance", "max-performance"
+	LargeDBMode     bool   // Enable large database mode (reduces parallelism, increases max_locks)
+
 	// CPU detection
 	CPUDetector *cpu.Detector
 	CPUInfo     *cpu.CPUInfo
+	MemoryInfo  *cpu.MemoryInfo // System memory information
 
 	// Sample backup options
 	SampleStrategy string // "ratio", "percent", "count"
 	SampleValue    int
 
 	// Output options
-	NoColor   bool
-	Debug     bool
-	LogLevel  string
-	LogFormat string
+	NoColor    bool
+	Debug      bool
+	DebugLocks bool // Extended lock debugging (captures lock detection, Guard decisions, boost attempts)
+	LogLevel   string
+	LogFormat  string
 
 	// Config persistence
 	NoSaveConfig bool
@@ -178,6 +184,13 @@ func New() *Config {
 		sslMode = ""
 	}
 
+	// Detect memory information
+	memInfo, _ := cpu.DetectMemory()
+
+	// Determine recommended resource profile
+	recommendedProfile := cpu.RecommendProfile(cpuInfo, memInfo, false)
+	defaultProfile := getEnvString("RESOURCE_PROFILE", recommendedProfile.Name)
+
 	cfg := &Config{
 		// Database defaults
 		Host:         host,
@@ -189,18 +202,21 @@ func New() *Config {
 		SSLMode:      sslMode,
 		Insecure:     getEnvBool("INSECURE", false),
 
-		// Backup defaults
+		// Backup defaults - use recommended profile's settings for small VMs
 		BackupDir:        backupDir,
 		CompressionLevel: getEnvInt("COMPRESS_LEVEL", 6),
-		Jobs:             getEnvInt("JOBS", getDefaultJobs(cpuInfo)),
-		DumpJobs:         getEnvInt("DUMP_JOBS", getDefaultDumpJobs(cpuInfo)),
+		Jobs:             getEnvInt("JOBS", recommendedProfile.Jobs),
+		DumpJobs:         getEnvInt("DUMP_JOBS", recommendedProfile.DumpJobs),
 		MaxCores:         getEnvInt("MAX_CORES", getDefaultMaxCores(cpuInfo)),
 		AutoDetectCores:  getEnvBool("AUTO_DETECT_CORES", true),
 		CPUWorkloadType:  getEnvString("CPU_WORKLOAD_TYPE", "balanced"),
+		ResourceProfile:  defaultProfile,
+		LargeDBMode:      getEnvBool("LARGE_DB_MODE", false),
 
-		// CPU detection
+		// CPU and memory detection
 		CPUDetector: cpuDetector,
 		CPUInfo:     cpuInfo,
+		MemoryInfo:  memInfo,
 
 		// Sample backup defaults
 		SampleStrategy: getEnvString("SAMPLE_STRATEGY", "ratio"),
@@ -217,14 +233,17 @@ func New() *Config {
 		SingleDBName:  getEnvString("SINGLE_DB_NAME", ""),
 		RestoreDBName: getEnvString("RESTORE_DB_NAME", ""),
 
-		// Timeouts
-		ClusterTimeoutMinutes: getEnvInt("CLUSTER_TIMEOUT_MIN", 240),
+		// Timeouts - default 24 hours (1440 min) to handle very large databases with large objects
+		ClusterTimeoutMinutes: getEnvInt("CLUSTER_TIMEOUT_MIN", 1440),
 
-		// Cluster parallelism (default: 2 concurrent operations for faster cluster backup/restore)
-		ClusterParallelism: getEnvInt("CLUSTER_PARALLELISM", 2),
+		// Cluster parallelism - use recommended profile's setting for small VMs
+		ClusterParallelism: getEnvInt("CLUSTER_PARALLELISM", recommendedProfile.ClusterParallelism),
+
+		// Working directory for large operations (default: system temp)
+		WorkDir: getEnvString("WORK_DIR", ""),
 
 		// Swap file management
-		SwapFilePath:   getEnvString("SWAP_FILE_PATH", "/tmp/dbbackup_swap"),
+		SwapFilePath:   "",                                // Will be set after WorkDir is initialized
 		SwapFileSizeGB: getEnvInt("SWAP_FILE_SIZE_GB", 0), // 0 = disabled by default
 		AutoSwap:       getEnvBool("AUTO_SWAP", false),
 
@@ -264,6 +283,13 @@ func New() *Config {
 		cfg.SSLMode = "prefer"
 	}
 
+	// Set SwapFilePath using WorkDir if not explicitly set via env var
+	if envSwap := os.Getenv("SWAP_FILE_PATH"); envSwap != "" {
+		cfg.SwapFilePath = envSwap
+	} else {
+		cfg.SwapFilePath = filepath.Join(cfg.GetEffectiveWorkDir(), "dbbackup_swap")
+	}
+
 	return cfg
 }
 
@@ -399,6 +425,62 @@ func (c *Config) OptimizeForCPU() error {
 	return nil
 }
 
+// ApplyResourceProfile applies a resource profile to the configuration
+// This adjusts parallelism settings based on the chosen profile
+func (c *Config) ApplyResourceProfile(profileName string) error {
+	profile := cpu.GetProfileByName(profileName)
+	if profile == nil {
+		return &ConfigError{
+			Field:   "resource_profile",
+			Value:   profileName,
+			Message: "unknown profile. Valid profiles: conservative, balanced, performance, max-performance",
+		}
+	}
+
+	// Validate profile against current system
+	isValid, warnings := cpu.ValidateProfileForSystem(profile, c.CPUInfo, c.MemoryInfo)
+	if !isValid {
+		// Log warnings but don't block - user may know what they're doing
+		_ = warnings // In production, log these warnings
+	}
+
+	// Apply profile settings
+	c.ResourceProfile = profile.Name
+
+	// If LargeDBMode is enabled, apply its modifiers
+	if c.LargeDBMode {
+		profile = cpu.ApplyLargeDBMode(profile)
+	}
+
+	c.ClusterParallelism = profile.ClusterParallelism
+	c.Jobs = profile.Jobs
+	c.DumpJobs = profile.DumpJobs
+
+	return nil
+}
+
+// GetResourceProfileRecommendation returns the recommended profile and reason
+func (c *Config) GetResourceProfileRecommendation(isLargeDB bool) (string, string) {
+	profile, reason := cpu.RecommendProfileWithReason(c.CPUInfo, c.MemoryInfo, isLargeDB)
+	return profile.Name, reason
+}
+
+// GetCurrentProfile returns the current resource profile details
+// If LargeDBMode is enabled, returns a modified profile with reduced parallelism
+func (c *Config) GetCurrentProfile() *cpu.ResourceProfile {
+	profile := cpu.GetProfileByName(c.ResourceProfile)
+	if profile == nil {
+		return nil
+	}
+
+	// Apply LargeDBMode modifier if enabled
+	if c.LargeDBMode {
+		return cpu.ApplyLargeDBMode(profile)
+	}
+
+	return profile
+}
+
 // GetCPUInfo returns CPU information, detecting if necessary
 func (c *Config) GetCPUInfo() (*cpu.CPUInfo, error) {
 	if c.CPUInfo != nil {
@@ -499,6 +581,14 @@ func GetCurrentOSUser() string {
 	return getCurrentUser()
 }
 
+// GetEffectiveWorkDir returns the configured WorkDir or system temp as fallback
+func (c *Config) GetEffectiveWorkDir() string {
+	if c.WorkDir != "" {
+		return c.WorkDir
+	}
+	return os.TempDir()
+}
+
 func getDefaultBackupDir() string {
 	// Try to create a sensible default backup directory
 	homeDir, _ := os.UserHomeDir()
@@ -516,7 +606,7 @@ func getDefaultBackupDir() string {
 		return "/var/lib/pgsql/pg_backups"
 	}
 
-	return "/tmp/db_backups"
+	return filepath.Join(os.TempDir(), "db_backups")
 }
 
 // CPU-related helper functions

internal/config/persist.go

@@ -28,8 +28,11 @@ type LocalConfig struct {
 	DumpJobs    int
 
 	// Performance settings
-	CPUWorkload string
-	MaxCores    int
+	CPUWorkload     string
+	MaxCores        int
+	ClusterTimeout  int // Cluster operation timeout in minutes (default: 1440 = 24 hours)
+	ResourceProfile string
+	LargeDBMode     bool // Enable large database mode (reduces parallelism, increases locks)
 
 	// Security settings
 	RetentionDays int
@@ -121,6 +124,14 @@ func LoadLocalConfig() (*LocalConfig, error) {
 				if mc, err := strconv.Atoi(value); err == nil {
 					cfg.MaxCores = mc
 				}
+			case "cluster_timeout":
+				if ct, err := strconv.Atoi(value); err == nil {
+					cfg.ClusterTimeout = ct
+				}
+			case "resource_profile":
+				cfg.ResourceProfile = value
+			case "large_db_mode":
+				cfg.LargeDBMode = value == "true" || value == "1"
 			}
 		case "security":
 			switch key {
@@ -199,6 +210,15 @@ func SaveLocalConfig(cfg *LocalConfig) error {
 	if cfg.MaxCores != 0 {
 		sb.WriteString(fmt.Sprintf("max_cores = %d\n", cfg.MaxCores))
 	}
+	if cfg.ClusterTimeout != 0 {
+		sb.WriteString(fmt.Sprintf("cluster_timeout = %d\n", cfg.ClusterTimeout))
+	}
+	if cfg.ResourceProfile != "" {
+		sb.WriteString(fmt.Sprintf("resource_profile = %s\n", cfg.ResourceProfile))
+	}
+	if cfg.LargeDBMode {
+		sb.WriteString("large_db_mode = true\n")
+	}
 	sb.WriteString("\n")
 
 	// Security section
@@ -268,6 +288,18 @@ func ApplyLocalConfig(cfg *Config, local *LocalConfig) {
 	if local.MaxCores != 0 {
 		cfg.MaxCores = local.MaxCores
 	}
+	// Apply cluster timeout from config file (overrides default)
+	if local.ClusterTimeout != 0 {
+		cfg.ClusterTimeoutMinutes = local.ClusterTimeout
+	}
+	// Apply resource profile settings
+	if local.ResourceProfile != "" {
+		cfg.ResourceProfile = local.ResourceProfile
+	}
+	// LargeDBMode is a boolean - apply if true in config
+	if local.LargeDBMode {
+		cfg.LargeDBMode = true
+	}
 	if cfg.RetentionDays == 30 && local.RetentionDays != 0 {
 		cfg.RetentionDays = local.RetentionDays
 	}
@@ -282,21 +314,24 @@ func ApplyLocalConfig(cfg *Config, local *LocalConfig) {
 // ConfigFromConfig creates a LocalConfig from a Config
 func ConfigFromConfig(cfg *Config) *LocalConfig {
 	return &LocalConfig{
-		DBType:        cfg.DatabaseType,
-		Host:          cfg.Host,
-		Port:          cfg.Port,
-		User:          cfg.User,
-		Database:      cfg.Database,
-		SSLMode:       cfg.SSLMode,
-		BackupDir:     cfg.BackupDir,
-		WorkDir:       cfg.WorkDir,
-		Compression:   cfg.CompressionLevel,
-		Jobs:          cfg.Jobs,
-		DumpJobs:      cfg.DumpJobs,
-		CPUWorkload:   cfg.CPUWorkloadType,
-		MaxCores:      cfg.MaxCores,
-		RetentionDays: cfg.RetentionDays,
-		MinBackups:    cfg.MinBackups,
-		MaxRetries:    cfg.MaxRetries,
+		DBType:          cfg.DatabaseType,
+		Host:            cfg.Host,
+		Port:            cfg.Port,
+		User:            cfg.User,
+		Database:        cfg.Database,
+		SSLMode:         cfg.SSLMode,
+		BackupDir:       cfg.BackupDir,
+		WorkDir:         cfg.WorkDir,
+		Compression:     cfg.CompressionLevel,
+		Jobs:            cfg.Jobs,
+		DumpJobs:        cfg.DumpJobs,
+		CPUWorkload:     cfg.CPUWorkloadType,
+		MaxCores:        cfg.MaxCores,
+		ClusterTimeout:  cfg.ClusterTimeoutMinutes,
+		ResourceProfile: cfg.ResourceProfile,
+		LargeDBMode:     cfg.LargeDBMode,
+		RetentionDays:   cfg.RetentionDays,
+		MinBackups:      cfg.MinBackups,
+		MaxRetries:      cfg.MaxRetries,
 	}
 }

internal/config/profile.go

@@ -0,0 +1,128 @@
+package config
+
+import (
+	"fmt"
+	"strings"
+)
+
+// RestoreProfile defines resource settings for restore operations
+type RestoreProfile struct {
+	Name               string
+	ParallelDBs        int  // Number of databases to restore in parallel
+	Jobs               int  // Parallel decompression jobs
+	DisableProgress    bool // Disable progress indicators to reduce overhead
+	MemoryConservative bool // Use memory-conservative settings
+}
+
+// GetRestoreProfile returns the profile settings for a given profile name
+func GetRestoreProfile(profileName string) (*RestoreProfile, error) {
+	profileName = strings.ToLower(strings.TrimSpace(profileName))
+
+	switch profileName {
+	case "conservative":
+		return &RestoreProfile{
+			Name:               "conservative",
+			ParallelDBs:        1, // Single-threaded restore
+			Jobs:               1, // Single-threaded decompression
+			DisableProgress:    false,
+			MemoryConservative: true,
+		}, nil
+
+	case "balanced", "":
+		return &RestoreProfile{
+			Name:               "balanced",
+			ParallelDBs:        0, // Use config default or auto-detect
+			Jobs:               0, // Use config default or auto-detect
+			DisableProgress:    false,
+			MemoryConservative: false,
+		}, nil
+
+	case "aggressive", "performance", "max":
+		return &RestoreProfile{
+			Name:               "aggressive",
+			ParallelDBs:        -1, // Auto-detect based on resources
+			Jobs:               -1, // Auto-detect based on CPU
+			DisableProgress:    false,
+			MemoryConservative: false,
+		}, nil
+
+	case "potato":
+		// Easter egg: same as conservative but with a fun name
+		return &RestoreProfile{
+			Name:               "potato",
+			ParallelDBs:        1,
+			Jobs:               1,
+			DisableProgress:    false,
+			MemoryConservative: true,
+		}, nil
+
+	default:
+		return nil, fmt.Errorf("unknown profile: %s (valid: conservative, balanced, aggressive)", profileName)
+	}
+}
+
+// ApplyProfile applies profile settings to config, respecting explicit user overrides
+func ApplyProfile(cfg *Config, profileName string, explicitJobs, explicitParallelDBs int) error {
+	profile, err := GetRestoreProfile(profileName)
+	if err != nil {
+		return err
+	}
+
+	// Show profile being used
+	if cfg.Debug {
+		fmt.Printf("Using restore profile: %s\n", profile.Name)
+		if profile.MemoryConservative {
+			fmt.Println("Memory-conservative mode enabled")
+		}
+	}
+
+	// Apply profile settings only if not explicitly overridden
+	if explicitJobs == 0 && profile.Jobs > 0 {
+		cfg.Jobs = profile.Jobs
+	}
+
+	if explicitParallelDBs == 0 && profile.ParallelDBs != 0 {
+		cfg.ClusterParallelism = profile.ParallelDBs
+	}
+
+	// Store profile name
+	cfg.ResourceProfile = profile.Name
+
+	// Conservative profile implies large DB mode settings
+	if profile.MemoryConservative {
+		cfg.LargeDBMode = true
+	}
+
+	return nil
+}
+
+// GetProfileDescription returns a human-readable description of the profile
+func GetProfileDescription(profileName string) string {
+	profile, err := GetRestoreProfile(profileName)
+	if err != nil {
+		return "Unknown profile"
+	}
+
+	switch profile.Name {
+	case "conservative":
+		return "Conservative: --parallel=1, single-threaded, minimal memory usage. Best for resource-constrained servers or when other services are running."
+	case "potato":
+		return "Potato Mode: Same as conservative, for servers running on a potato 🥔"
+	case "balanced":
+		return "Balanced: Auto-detect resources, moderate parallelism. Good default for most scenarios."
+	case "aggressive":
+		return "Aggressive: Maximum parallelism, all available resources. Best for dedicated database servers with ample resources."
+	default:
+		return profile.Name
+	}
+}
+
+// ListProfiles returns a list of all available profiles with descriptions
+func ListProfiles() map[string]string {
+	return map[string]string{
+		"conservative": GetProfileDescription("conservative"),
+		"balanced":     GetProfileDescription("balanced"),
+		"aggressive":   GetProfileDescription("aggressive"),
+		"potato":       GetProfileDescription("potato"),
+	}
+}

internal/cpu/profiles.go

@@ -0,0 +1,475 @@
+package cpu
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"os/exec"
+	"runtime"
+	"strconv"
+	"strings"
+)
+
+// MemoryInfo holds system memory information
+type MemoryInfo struct {
+	TotalBytes     int64  `json:"total_bytes"`
+	AvailableBytes int64  `json:"available_bytes"`
+	FreeBytes      int64  `json:"free_bytes"`
+	UsedBytes      int64  `json:"used_bytes"`
+	SwapTotalBytes int64  `json:"swap_total_bytes"`
+	SwapFreeBytes  int64  `json:"swap_free_bytes"`
+	TotalGB        int    `json:"total_gb"`
+	AvailableGB    int    `json:"available_gb"`
+	Platform       string `json:"platform"`
+}
+
+// ResourceProfile defines a resource allocation profile for backup/restore operations
+type ResourceProfile struct {
+	Name                string `json:"name"`
+	Description         string `json:"description"`
+	ClusterParallelism  int    `json:"cluster_parallelism"`   // Concurrent databases
+	Jobs                int    `json:"jobs"`                  // Parallel jobs within pg_restore
+	DumpJobs            int    `json:"dump_jobs"`             // Parallel jobs for pg_dump
+	MaintenanceWorkMem  string `json:"maintenance_work_mem"`  // PostgreSQL recommendation
+	MaxLocksPerTxn      int    `json:"max_locks_per_txn"`     // PostgreSQL recommendation
+	RecommendedForLarge bool   `json:"recommended_for_large"` // Suitable for large DBs?
+	MinMemoryGB         int    `json:"min_memory_gb"`         // Minimum memory for this profile
+	MinCores            int    `json:"min_cores"`             // Minimum cores for this profile
+}
+
+// Predefined resource profiles
+var (
+	// ProfileConservative - Safe for constrained VMs, avoids shared memory issues
+	ProfileConservative = ResourceProfile{
+		Name:                "conservative",
+		Description:         "Safe for small VMs (2-4 cores, <16GB). Sequential operations, minimal memory pressure. Best for large DBs on limited hardware.",
+		ClusterParallelism:  1,
+		Jobs:                1,
+		DumpJobs:            2,
+		MaintenanceWorkMem:  "256MB",
+		MaxLocksPerTxn:      4096,
+		RecommendedForLarge: true,
+		MinMemoryGB:         4,
+		MinCores:            2,
+	}
+
+	// ProfileBalanced - Default profile, works for most scenarios
+	ProfileBalanced = ResourceProfile{
+		Name:                "balanced",
+		Description:         "Balanced for medium VMs (4-8 cores, 16-32GB). Moderate parallelism with good safety margin.",
+		ClusterParallelism:  2,
+		Jobs:                2,
+		DumpJobs:            4,
+		MaintenanceWorkMem:  "512MB",
+		MaxLocksPerTxn:      2048,
+		RecommendedForLarge: true,
+		MinMemoryGB:         16,
+		MinCores:            4,
+	}
+
+	// ProfilePerformance - Aggressive parallelism for powerful servers
+	ProfilePerformance = ResourceProfile{
+		Name:                "performance",
+		Description:         "Aggressive for powerful servers (8+ cores, 32GB+). Maximum parallelism for fast operations.",
+		ClusterParallelism:  4,
+		Jobs:                4,
+		DumpJobs:            8,
+		MaintenanceWorkMem:  "1GB",
+		MaxLocksPerTxn:      1024,
+		RecommendedForLarge: false, // Large DBs may still need conservative
+		MinMemoryGB:         32,
+		MinCores:            8,
+	}
+
+	// ProfileMaxPerformance - Maximum parallelism for high-end servers
+	ProfileMaxPerformance = ResourceProfile{
+		Name:                "max-performance",
+		Description:         "Maximum for high-end servers (16+ cores, 64GB+). Full CPU utilization.",
+		ClusterParallelism:  8,
+		Jobs:                8,
+		DumpJobs:            16,
+		MaintenanceWorkMem:  "2GB",
+		MaxLocksPerTxn:      512,
+		RecommendedForLarge: false, // Large DBs should use LargeDBMode
+		MinMemoryGB:         64,
+		MinCores:            16,
+	}
+
+	// AllProfiles contains all available profiles (VM resource-based)
+	AllProfiles = []ResourceProfile{
+		ProfileConservative,
+		ProfileBalanced,
+		ProfilePerformance,
+		ProfileMaxPerformance,
+	}
+)
+
+// GetProfileByName returns a profile by its name
+func GetProfileByName(name string) *ResourceProfile {
+	for _, p := range AllProfiles {
+		if strings.EqualFold(p.Name, name) {
+			return &p
+		}
+	}
+	return nil
+}
+
+// ApplyLargeDBMode modifies a profile for large database operations.
+// This is a modifier that reduces parallelism and increases max_locks_per_transaction
+// to prevent "out of shared memory" errors with large databases (many tables, LOBs, etc.).
+// It returns a new profile with adjusted settings, leaving the original unchanged.
+func ApplyLargeDBMode(profile *ResourceProfile) *ResourceProfile {
+	if profile == nil {
+		return nil
+	}
+
+	// Create a copy with adjusted settings
+	modified := *profile
+
+	// Add "(large-db)" suffix to indicate this is modified
+	modified.Name = profile.Name + " +large-db"
+	modified.Description = fmt.Sprintf("%s [LargeDBMode: reduced parallelism, high locks]", profile.Description)
+
+	// Reduce parallelism to avoid lock exhaustion
+	// Rule: halve parallelism, minimum 1
+	modified.ClusterParallelism = max(1, profile.ClusterParallelism/2)
+	modified.Jobs = max(1, profile.Jobs/2)
+	modified.DumpJobs = max(2, profile.DumpJobs/2)
+
+	// Force high max_locks_per_transaction for large schemas
+	modified.MaxLocksPerTxn = 8192
+
+	// Increase maintenance_work_mem for complex operations
+	// Keep or boost maintenance work mem
+	modified.MaintenanceWorkMem = "1GB"
+	if profile.MinMemoryGB >= 32 {
+		modified.MaintenanceWorkMem = "2GB"
+	}
+
+	modified.RecommendedForLarge = true
+
+	return &modified
+}
+
+// max returns the larger of two integers
+func max(a, b int) int {
+	if a > b {
+		return a
+	}
+	return b
+}
+
+// DetectMemory detects system memory information
+func DetectMemory() (*MemoryInfo, error) {
+	info := &MemoryInfo{
+		Platform: runtime.GOOS,
+	}
+
+	switch runtime.GOOS {
+	case "linux":
+		if err := detectLinuxMemory(info); err != nil {
+			return info, fmt.Errorf("linux memory detection failed: %w", err)
+		}
+	case "darwin":
+		if err := detectDarwinMemory(info); err != nil {
+			return info, fmt.Errorf("darwin memory detection failed: %w", err)
+		}
+	case "windows":
+		if err := detectWindowsMemory(info); err != nil {
+			return info, fmt.Errorf("windows memory detection failed: %w", err)
+		}
+	default:
+		// Fallback: use Go runtime memory stats
+		var memStats runtime.MemStats
+		runtime.ReadMemStats(&memStats)
+		info.TotalBytes = int64(memStats.Sys)
+		info.AvailableBytes = int64(memStats.Sys - memStats.Alloc)
+	}
+
+	// Calculate GB values
+	info.TotalGB = int(info.TotalBytes / (1024 * 1024 * 1024))
+	info.AvailableGB = int(info.AvailableBytes / (1024 * 1024 * 1024))
+
+	return info, nil
+}
+
+// detectLinuxMemory reads memory info from /proc/meminfo
+func detectLinuxMemory(info *MemoryInfo) error {
+	file, err := os.Open("/proc/meminfo")
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		line := scanner.Text()
+		parts := strings.Fields(line)
+		if len(parts) < 2 {
+			continue
+		}
+
+		key := strings.TrimSuffix(parts[0], ":")
+		value, err := strconv.ParseInt(parts[1], 10, 64)
+		if err != nil {
+			continue
+		}
+
+		// Values are in kB
+		valueBytes := value * 1024
+
+		switch key {
+		case "MemTotal":
+			info.TotalBytes = valueBytes
+		case "MemAvailable":
+			info.AvailableBytes = valueBytes
+		case "MemFree":
+			info.FreeBytes = valueBytes
+		case "SwapTotal":
+			info.SwapTotalBytes = valueBytes
+		case "SwapFree":
+			info.SwapFreeBytes = valueBytes
+		}
+	}
+
+	info.UsedBytes = info.TotalBytes - info.AvailableBytes
+
+	return scanner.Err()
+}
+
+// detectDarwinMemory detects memory on macOS
+func detectDarwinMemory(info *MemoryInfo) error {
+	// Use sysctl for total memory
+	if output, err := runCommand("sysctl", "-n", "hw.memsize"); err == nil {
+		if val, err := strconv.ParseInt(strings.TrimSpace(output), 10, 64); err == nil {
+			info.TotalBytes = val
+		}
+	}
+
+	// Use vm_stat for available memory (more complex parsing required)
+	if output, err := runCommand("vm_stat"); err == nil {
+		pageSize := int64(4096) // Default page size
+		var freePages, inactivePages int64
+
+		lines := strings.Split(output, "\n")
+		for _, line := range lines {
+			if strings.Contains(line, "page size of") {
+				parts := strings.Fields(line)
+				for i, p := range parts {
+					if p == "of" && i+1 < len(parts) {
+						if ps, err := strconv.ParseInt(parts[i+1], 10, 64); err == nil {
+							pageSize = ps
+						}
+					}
+				}
+			} else if strings.Contains(line, "Pages free:") {
+				val := extractNumberFromLine(line)
+				freePages = val
+			} else if strings.Contains(line, "Pages inactive:") {
+				val := extractNumberFromLine(line)
+				inactivePages = val
+			}
+		}
+
+		info.FreeBytes = freePages * pageSize
+		info.AvailableBytes = (freePages + inactivePages) * pageSize
+	}
+
+	info.UsedBytes = info.TotalBytes - info.AvailableBytes
+	return nil
+}
+
+// detectWindowsMemory detects memory on Windows
+func detectWindowsMemory(info *MemoryInfo) error {
+	// Use wmic for memory info
+	if output, err := runCommand("wmic", "OS", "get", "TotalVisibleMemorySize,FreePhysicalMemory", "/format:list"); err == nil {
+		lines := strings.Split(output, "\n")
+		for _, line := range lines {
+			line = strings.TrimSpace(line)
+			if strings.HasPrefix(line, "TotalVisibleMemorySize=") {
+				val := strings.TrimPrefix(line, "TotalVisibleMemorySize=")
+				if v, err := strconv.ParseInt(strings.TrimSpace(val), 10, 64); err == nil {
+					info.TotalBytes = v * 1024 // KB to bytes
+				}
+			} else if strings.HasPrefix(line, "FreePhysicalMemory=") {
+				val := strings.TrimPrefix(line, "FreePhysicalMemory=")
+				if v, err := strconv.ParseInt(strings.TrimSpace(val), 10, 64); err == nil {
+					info.FreeBytes = v * 1024
+					info.AvailableBytes = v * 1024
+				}
+			}
+		}
+	}
+
+	info.UsedBytes = info.TotalBytes - info.AvailableBytes
+	return nil
+}
+
+// RecommendProfile recommends a resource profile based on system resources and workload
+func RecommendProfile(cpuInfo *CPUInfo, memInfo *MemoryInfo, isLargeDB bool) *ResourceProfile {
+	cores := 0
+	if cpuInfo != nil {
+		cores = cpuInfo.PhysicalCores
+		if cores == 0 {
+			cores = cpuInfo.LogicalCores
+		}
+	}
+	if cores == 0 {
+		cores = runtime.NumCPU()
+	}
+
+	memGB := 0
+	if memInfo != nil {
+		memGB = memInfo.TotalGB
+	}
+
+	// Special case: large databases should use conservative profile
+	// The caller should also enable LargeDBMode for increased MaxLocksPerTxn
+	if isLargeDB {
+		// For large DBs, recommend conservative regardless of resources
+		// LargeDBMode flag will handle the lock settings separately
+		return &ProfileConservative
+	}
+
+	// Resource-based selection
+	if cores >= 16 && memGB >= 64 {
+		return &ProfileMaxPerformance
+	} else if cores >= 8 && memGB >= 32 {
+		return &ProfilePerformance
+	} else if cores >= 4 && memGB >= 16 {
+		return &ProfileBalanced
+	}
+
+	// Default to conservative for constrained systems
+	return &ProfileConservative
+}
+
+// RecommendProfileWithReason returns a profile recommendation with explanation
+func RecommendProfileWithReason(cpuInfo *CPUInfo, memInfo *MemoryInfo, isLargeDB bool) (*ResourceProfile, string) {
+	cores := 0
+	if cpuInfo != nil {
+		cores = cpuInfo.PhysicalCores
+		if cores == 0 {
+			cores = cpuInfo.LogicalCores
+		}
+	}
+	if cores == 0 {
+		cores = runtime.NumCPU()
+	}
+
+	memGB := 0
+	if memInfo != nil {
+		memGB = memInfo.TotalGB
+	}
+
+	// Build reason string
+	var reason strings.Builder
+	reason.WriteString(fmt.Sprintf("System: %d cores, %dGB RAM. ", cores, memGB))
+
+	profile := RecommendProfile(cpuInfo, memInfo, isLargeDB)
+
+	if isLargeDB {
+		reason.WriteString("Large database mode - using conservative settings. Enable LargeDBMode for higher max_locks.")
+	} else if profile.Name == "conservative" {
+		reason.WriteString("Limited resources detected - using conservative profile for stability.")
+	} else if profile.Name == "max-performance" {
+		reason.WriteString("High-end server detected - using maximum parallelism.")
+	} else if profile.Name == "performance" {
+		reason.WriteString("Good resources detected - using performance profile.")
+	} else {
+		reason.WriteString("Using balanced profile for optimal performance/stability trade-off.")
+	}
+
+	return profile, reason.String()
+}
+
+// ValidateProfileForSystem checks if a profile is suitable for the current system
+func ValidateProfileForSystem(profile *ResourceProfile, cpuInfo *CPUInfo, memInfo *MemoryInfo) (bool, []string) {
+	var warnings []string
+
+	cores := 0
+	if cpuInfo != nil {
+		cores = cpuInfo.PhysicalCores
+		if cores == 0 {
+			cores = cpuInfo.LogicalCores
+		}
+	}
+	if cores == 0 {
+		cores = runtime.NumCPU()
+	}
+
+	memGB := 0
+	if memInfo != nil {
+		memGB = memInfo.TotalGB
+	}
+
+	// Check minimum requirements
+	if cores < profile.MinCores {
+		warnings = append(warnings,
+			fmt.Sprintf("Profile '%s' recommends %d+ cores (system has %d)", profile.Name, profile.MinCores, cores))
+	}
+
+	if memGB < profile.MinMemoryGB {
+		warnings = append(warnings,
+			fmt.Sprintf("Profile '%s' recommends %dGB+ RAM (system has %dGB)", profile.Name, profile.MinMemoryGB, memGB))
+	}
+
+	// Check for potential issues
+	if profile.ClusterParallelism > cores {
+		warnings = append(warnings,
+			fmt.Sprintf("Cluster parallelism (%d) exceeds CPU cores (%d) - may cause contention",
+				profile.ClusterParallelism, cores))
+	}
+
+	// Memory pressure warning
+	memPerWorker := 2 // Rough estimate: 2GB per parallel worker for large DB operations
+	requiredMem := profile.ClusterParallelism * profile.Jobs * memPerWorker
+	if memGB > 0 && requiredMem > memGB {
+		warnings = append(warnings,
+			fmt.Sprintf("High parallelism may require ~%dGB RAM (system has %dGB) - risk of OOM",
+				requiredMem, memGB))
+	}
+
+	return len(warnings) == 0, warnings
+}
+
+// FormatProfileSummary returns a formatted summary of a profile
+func (p *ResourceProfile) FormatProfileSummary() string {
+	return fmt.Sprintf("[%s] Parallel: %d DBs, %d jobs | Recommended for large DBs: %v",
+		strings.ToUpper(p.Name),
+		p.ClusterParallelism,
+		p.Jobs,
+		p.RecommendedForLarge)
+}
+
+// PostgreSQLRecommendations returns PostgreSQL configuration recommendations for this profile
+func (p *ResourceProfile) PostgreSQLRecommendations() []string {
+	return []string{
+		fmt.Sprintf("ALTER SYSTEM SET max_locks_per_transaction = %d;", p.MaxLocksPerTxn),
+		fmt.Sprintf("ALTER SYSTEM SET maintenance_work_mem = '%s';", p.MaintenanceWorkMem),
+		"-- Restart PostgreSQL after changes to max_locks_per_transaction",
+	}
+}
+
+// Helper functions
+
+func runCommand(name string, args ...string) (string, error) {
+	cmd := exec.Command(name, args...)
+	output, err := cmd.Output()
+	if err != nil {
+		return "", err
+	}
+	return string(output), nil
+}
+
+func extractNumberFromLine(line string) int64 {
+	// Extract number before the period at end (e.g., "Pages free:   123456.")
+	parts := strings.Fields(line)
+	for _, p := range parts {
+		p = strings.TrimSuffix(p, ".")
+		if val, err := strconv.ParseInt(p, 10, 64); err == nil && val > 0 {
+			return val
+		}
+	}
+	return 0
+}

internal/database/postgresql.go

@@ -15,7 +15,6 @@ import (
 
 	"github.com/jackc/pgx/v5/pgxpool"
 	"github.com/jackc/pgx/v5/stdlib"
-	_ "github.com/jackc/pgx/v5/stdlib" // PostgreSQL driver (pgx)
 )
 
 // PostgreSQL implements Database interface for PostgreSQL
@@ -317,11 +316,12 @@ func (p *PostgreSQL) BuildBackupCommand(database, outputFile string, options Bac
 	cmd := []string{"pg_dump"}
 
 	// Connection parameters
-	if p.cfg.Host != "localhost" {
+	// CRITICAL: Always pass port even for localhost - user may have non-standard port
+	if p.cfg.Host != "localhost" && p.cfg.Host != "127.0.0.1" && p.cfg.Host != "" {
 		cmd = append(cmd, "-h", p.cfg.Host)
-		cmd = append(cmd, "-p", strconv.Itoa(p.cfg.Port))
 		cmd = append(cmd, "--no-password")
 	}
+	cmd = append(cmd, "-p", strconv.Itoa(p.cfg.Port))
 	cmd = append(cmd, "-U", p.cfg.User)
 
 	// Format and compression
@@ -381,11 +381,12 @@ func (p *PostgreSQL) BuildRestoreCommand(database, inputFile string, options Res
 	cmd := []string{"pg_restore"}
 
 	// Connection parameters
-	if p.cfg.Host != "localhost" {
+	// CRITICAL: Always pass port even for localhost - user may have non-standard port
+	if p.cfg.Host != "localhost" && p.cfg.Host != "127.0.0.1" && p.cfg.Host != "" {
 		cmd = append(cmd, "-h", p.cfg.Host)
-		cmd = append(cmd, "-p", strconv.Itoa(p.cfg.Port))
 		cmd = append(cmd, "--no-password")
 	}
+	cmd = append(cmd, "-p", strconv.Itoa(p.cfg.Port))
 	cmd = append(cmd, "-U", p.cfg.User)
 
 	// Parallel jobs (incompatible with --single-transaction per PostgreSQL docs)

internal/dedup/chunker.go

@@ -0,0 +1,228 @@
+// Package dedup provides content-defined chunking and deduplication
+// for database backups, similar to restic/borgbackup but with native
+// database dump support.
+package dedup
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"io"
+)
+
+// Chunker constants for content-defined chunking
+const (
+	// DefaultMinChunkSize is the minimum chunk size (4KB)
+	DefaultMinChunkSize = 4 * 1024
+
+	// DefaultAvgChunkSize is the target average chunk size (8KB)
+	DefaultAvgChunkSize = 8 * 1024
+
+	// DefaultMaxChunkSize is the maximum chunk size (32KB)
+	DefaultMaxChunkSize = 32 * 1024
+
+	// WindowSize for the rolling hash
+	WindowSize = 48
+
+	// ChunkMask determines average chunk size
+	// For 8KB average: we look for hash % 8192 == 0
+	ChunkMask = DefaultAvgChunkSize - 1
+)
+
+// Gear hash table - random values for each byte
+// This is used for the Gear rolling hash which is simpler and faster than Buzhash
+var gearTable = [256]uint64{
+	0x5c95c078, 0x22408989, 0x2d48a214, 0x12842087, 0x530f8afb, 0x474536b9, 0x2963b4f1, 0x44cb738b,
+	0x4ea7403d, 0x4d606b6e, 0x074ec5d3, 0x3f7e82f4, 0x4e3d26e7, 0x5cb4e82f, 0x7b0a1ef5, 0x3d4e7c92,
+	0x2a81ed69, 0x7f853df8, 0x452c8cf7, 0x0f4f3c9d, 0x3a5e81b7, 0x6cb2d819, 0x2e4c5f93, 0x7e8a1c57,
+	0x1f9d3e8c, 0x4b7c2a5d, 0x3c8f1d6e, 0x5d2a7b4f, 0x6e9c3f8a, 0x7a4d1e5c, 0x2b8c4f7d, 0x4f7d2c9e,
+	0x5a1e3d7c, 0x6b4f8a2d, 0x3e7c9d5a, 0x7d2a4f8b, 0x4c9e7d3a, 0x5b8a1c6e, 0x2d5f4a9c, 0x7a3c8d6b,
+	0x6e2a7b4d, 0x3f8c5d9a, 0x4a7d3e5b, 0x5c9a2d7e, 0x7b4e8f3c, 0x2a6d9c5b, 0x3e4a7d8c, 0x5d7b2e9a,
+	0x4c8a3d7b, 0x6e9d5c8a, 0x7a3e4d9c, 0x2b5c8a7d, 0x4d7e3a9c, 0x5a9c7d3e, 0x3c8b5a7d, 0x7d4e9c2a,
+	0x6a3d8c5b, 0x4e7a9d3c, 0x5c2a7b9e, 0x3a9d4e7c, 0x7b8c5a2d, 0x2d7e4a9c, 0x4a3c9d7b, 0x5e9a7c3d,
+	0x6c4d8a5b, 0x3b7e9c4a, 0x7a5c2d8b, 0x4d9a3e7c, 0x5b7c4a9e, 0x2e8a5d3c, 0x3c9e7a4d, 0x7d4a8c5b,
+	0x6b2d9a7c, 0x4a8c3e5d, 0x5d7a9c2e, 0x3e4c7b9a, 0x7c9d5a4b, 0x2a7e8c3d, 0x4c5a9d7e, 0x5a3e7c4b,
+	0x6d8a2c9e, 0x3c7b4a8d, 0x7e2d9c5a, 0x4b9a7e3c, 0x5c4d8a7b, 0x2d9e3c5a, 0x3a7c9d4e, 0x7b5a4c8d,
+	0x6a9c2e7b, 0x4d3e8a9c, 0x5e7b4d2a, 0x3b9a7c5d, 0x7c4e8a3b, 0x2e7d9c4a, 0x4a8b3e7d, 0x5d2c9a7e,
+	0x6c7a5d3e, 0x3e9c4a7b, 0x7a8d2c5e, 0x4c3e9a7d, 0x5b9c7e2a, 0x2a4d7c9e, 0x3d8a5c4b, 0x7e7b9a3c,
+	0x6b4a8d9e, 0x4e9c3b7a, 0x5a7d4e9c, 0x3c2a8b7d, 0x7d9e5c4a, 0x2b8a7d3e, 0x4d5c9a2b, 0x5e3a7c8d,
+	0x6a9d4b7c, 0x3b7a9c5e, 0x7c4b8a2d, 0x4a9e7c3b, 0x5d2b9a4e, 0x2e7c4d9a, 0x3a9b7e4c, 0x7e5a3c8b,
+	0x6c8a9d4e, 0x4b7c2a5e, 0x5a3e9c7d, 0x3d9a4b7c, 0x7a2d5e9c, 0x2c8b7a3d, 0x4e9c5a2b, 0x5b4d7e9a,
+	0x6d7a3c8b, 0x3e2b9a5d, 0x7c9d4a7e, 0x4a5e3c9b, 0x5e7a9d2c, 0x2b3c7e9a, 0x3a9e4b7d, 0x7d8a5c3e,
+	0x6b9c2d4a, 0x4c7e9a3b, 0x5a2c8b7e, 0x3b4d9a5c, 0x7e9b3a4d, 0x2d5a7c9e, 0x4b8d3e7a, 0x5c9a4b2d,
+	0x6a7c8d9e, 0x3c9e5a7b, 0x7b4a2c9d, 0x4d3b7e9a, 0x5e9c4a3b, 0x2a7b9d4e, 0x3e5c8a7b, 0x7a9d3e5c,
+	0x6c2a7b8d, 0x4e9a5c3b, 0x5b7d2a9e, 0x3a4e9c7b, 0x7d8b3a5c, 0x2c9e7a4b, 0x4a3d5e9c, 0x5d7b8a2e,
+	0x6b9a4c7d, 0x3d5a9e4b, 0x7e2c7b9a, 0x4b9d3a5e, 0x5c4e7a9d, 0x2e8a3c7b, 0x3b7c9e5a, 0x7a4d8b3e,
+	0x6d9c5a2b, 0x4a7e3d9c, 0x5e2a9b7d, 0x3c9a7e4b, 0x7b3e5c9a, 0x2a4b8d7e, 0x4d9c2a5b, 0x5a7d9e3c,
+	0x6c3b8a7d, 0x3e9d4a5c, 0x7d5c2b9e, 0x4c8a7d3b, 0x5b9e3c7a, 0x2d7a9c4e, 0x3a5e7b9d, 0x7e8b4a3c,
+	0x6a2d9e7b, 0x4b3e5a9d, 0x5d9c7b2a, 0x3b7d4e9c, 0x7c9a3b5e, 0x2e5c8a7d, 0x4a7b9d3e, 0x5c3a7e9b,
+	0x6d9e5c4a, 0x3c4a7b9e, 0x7a9d2e5c, 0x4e7c9a3d, 0x5a8b4e7c, 0x2b9a3d7e, 0x3d5b8a9c, 0x7b4e9a2d,
+	0x6c7d3a9e, 0x4a9c5e3b, 0x5e2b7d9a, 0x3a8d4c7b, 0x7d3e9a5c, 0x2c7a8b9e, 0x4b5d3a7c, 0x5c9a7e2b,
+	0x6a4b9d3e, 0x3e7c2a9d, 0x7c8a5b4e, 0x4d9e3c7a, 0x5b3a9e7c, 0x2e9c7b4a, 0x3b4e8a9d, 0x7a9c4e3b,
+	0x6d2a7c9e, 0x4c8b9a5d, 0x5a9e2b7c, 0x3c3d7a9e, 0x7e5a9c4b, 0x2a8d3e7c, 0x4e7a5c9b, 0x5d9b8a2e,
+	0x6b4c9e7a, 0x3a9d5b4e, 0x7b2e8a9c, 0x4a5c3e9b, 0x5c9a4d7e, 0x2d7e9a3c, 0x3e8b7c5a, 0x7c9e2a4d,
+	0x6a3b7d9c, 0x4d9a8b3e, 0x5e5c2a7b, 0x3b4a9d7c, 0x7a7c5e9b, 0x2c9b4a8d, 0x4b3e7c9a, 0x5a9d3b7e,
+	0x6c8a4e9d, 0x3d7b9c5a, 0x7e2a4b9c, 0x4c9e5d3a, 0x5b7a9c4e, 0x2e4d8a7b, 0x3a9c7e5d, 0x7b8d3a9e,
+	0x6d5c9a4b, 0x4a2e7b9d, 0x5d9b4c8a, 0x3c7a9e2b, 0x7d4b8c9e, 0x2b9a5c4d, 0x4e7d3a9c, 0x5c8a9e7b,
+}
+
+// Chunk represents a single deduplicated chunk
+type Chunk struct {
+	// Hash is the SHA-256 hash of the chunk data (content-addressed)
+	Hash string
+
+	// Data is the raw chunk bytes
+	Data []byte
+
+	// Offset is the byte offset in the original file
+	Offset int64
+
+	// Length is the size of this chunk
+	Length int
+}
+
+// ChunkerConfig holds configuration for the chunker
+type ChunkerConfig struct {
+	MinSize int // Minimum chunk size
+	AvgSize int // Target average chunk size
+	MaxSize int // Maximum chunk size
+}
+
+// DefaultChunkerConfig returns sensible defaults
+func DefaultChunkerConfig() ChunkerConfig {
+	return ChunkerConfig{
+		MinSize: DefaultMinChunkSize,
+		AvgSize: DefaultAvgChunkSize,
+		MaxSize: DefaultMaxChunkSize,
+	}
+}
+
+// Chunker performs content-defined chunking using Gear hash
+type Chunker struct {
+	reader io.Reader
+	config ChunkerConfig
+
+	// Rolling hash state
+	hash uint64
+
+	// Current chunk state
+	buf    []byte
+	offset int64
+	mask   uint64
+}
+
+// NewChunker creates a new chunker for the given reader
+func NewChunker(r io.Reader, config ChunkerConfig) *Chunker {
+	// Calculate mask for target average size
+	// We want: avg_size = 1 / P(boundary)
+	// With mask, P(boundary) = 1 / (mask + 1)
+	// So mask = avg_size - 1
+	mask := uint64(config.AvgSize - 1)
+
+	return &Chunker{
+		reader: r,
+		config: config,
+		buf:    make([]byte, 0, config.MaxSize),
+		mask:   mask,
+	}
+}
+
+// Next returns the next chunk from the input stream
+// Returns io.EOF when no more data is available
+func (c *Chunker) Next() (*Chunk, error) {
+	c.buf = c.buf[:0]
+	c.hash = 0
+
+	// Read bytes until we find a chunk boundary or hit max size
+	singleByte := make([]byte, 1)
+
+	for {
+		n, err := c.reader.Read(singleByte)
+		if n == 0 {
+			if err == io.EOF {
+				// Return remaining data as final chunk
+				if len(c.buf) > 0 {
+					return c.makeChunk(), nil
+				}
+				return nil, io.EOF
+			}
+			if err != nil {
+				return nil, err
+			}
+			continue
+		}
+
+		b := singleByte[0]
+		c.buf = append(c.buf, b)
+
+		// Update Gear rolling hash
+		// Gear hash: hash = (hash << 1) + gear_table[byte]
+		c.hash = (c.hash << 1) + gearTable[b]
+
+		// Check for chunk boundary after minimum size
+		if len(c.buf) >= c.config.MinSize {
+			// Check if we hit a boundary (hash matches mask pattern)
+			if (c.hash & c.mask) == 0 {
+				return c.makeChunk(), nil
+			}
+		}
+
+		// Force boundary at max size
+		if len(c.buf) >= c.config.MaxSize {
+			return c.makeChunk(), nil
+		}
+	}
+}
+
+// makeChunk creates a Chunk from the current buffer
+func (c *Chunker) makeChunk() *Chunk {
+	// Compute SHA-256 hash
+	h := sha256.Sum256(c.buf)
+	hash := hex.EncodeToString(h[:])
+
+	// Copy data
+	data := make([]byte, len(c.buf))
+	copy(data, c.buf)
+
+	chunk := &Chunk{
+		Hash:   hash,
+		Data:   data,
+		Offset: c.offset,
+		Length: len(data),
+	}
+
+	c.offset += int64(len(data))
+	return chunk
+}
+
+// ChunkReader splits a reader into content-defined chunks
+// and returns them via a channel for concurrent processing
+func ChunkReader(r io.Reader, config ChunkerConfig) (<-chan *Chunk, <-chan error) {
+	chunks := make(chan *Chunk, 100)
+	errs := make(chan error, 1)
+
+	go func() {
+		defer close(chunks)
+		defer close(errs)
+
+		chunker := NewChunker(r, config)
+		for {
+			chunk, err := chunker.Next()
+			if err == io.EOF {
+				return
+			}
+			if err != nil {
+				errs <- err
+				return
+			}
+			chunks <- chunk
+		}
+	}()
+
+	return chunks, errs
+}
+
+// HashData computes SHA-256 hash of data
+func HashData(data []byte) string {
+	h := sha256.Sum256(data)
+	return hex.EncodeToString(h[:])
+}

internal/dedup/chunker_test.go

@@ -0,0 +1,221 @@
+package dedup
+
+import (
+	"bytes"
+	"crypto/rand"
+	"io"
+	mathrand "math/rand"
+	"testing"
+)
+
+func TestChunker_Basic(t *testing.T) {
+	// Create test data
+	data := make([]byte, 100*1024) // 100KB
+	rand.Read(data)
+
+	chunker := NewChunker(bytes.NewReader(data), DefaultChunkerConfig())
+
+	var chunks []*Chunk
+	var totalBytes int
+
+	for {
+		chunk, err := chunker.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			t.Fatalf("Chunker.Next() error: %v", err)
+		}
+
+		chunks = append(chunks, chunk)
+		totalBytes += chunk.Length
+
+		// Verify chunk properties
+		if chunk.Length < DefaultMinChunkSize && len(chunks) < 10 {
+			// Only the last chunk can be smaller than min
+			// (unless file is smaller than min)
+		}
+		if chunk.Length > DefaultMaxChunkSize {
+			t.Errorf("Chunk %d exceeds max size: %d > %d", len(chunks), chunk.Length, DefaultMaxChunkSize)
+		}
+		if chunk.Hash == "" {
+			t.Errorf("Chunk %d has empty hash", len(chunks))
+		}
+		if len(chunk.Hash) != 64 { // SHA-256 hex length
+			t.Errorf("Chunk %d has invalid hash length: %d", len(chunks), len(chunk.Hash))
+		}
+	}
+
+	if totalBytes != len(data) {
+		t.Errorf("Total bytes mismatch: got %d, want %d", totalBytes, len(data))
+	}
+
+	t.Logf("Chunked %d bytes into %d chunks", totalBytes, len(chunks))
+	t.Logf("Average chunk size: %d bytes", totalBytes/len(chunks))
+}
+
+func TestChunker_Deterministic(t *testing.T) {
+	// Same data should produce same chunks
+	data := make([]byte, 50*1024)
+	rand.Read(data)
+
+	// First pass
+	chunker1 := NewChunker(bytes.NewReader(data), DefaultChunkerConfig())
+	var hashes1 []string
+	for {
+		chunk, err := chunker1.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			t.Fatal(err)
+		}
+		hashes1 = append(hashes1, chunk.Hash)
+	}
+
+	// Second pass
+	chunker2 := NewChunker(bytes.NewReader(data), DefaultChunkerConfig())
+	var hashes2 []string
+	for {
+		chunk, err := chunker2.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			t.Fatal(err)
+		}
+		hashes2 = append(hashes2, chunk.Hash)
+	}
+
+	// Compare
+	if len(hashes1) != len(hashes2) {
+		t.Fatalf("Different chunk counts: %d vs %d", len(hashes1), len(hashes2))
+	}
+
+	for i := range hashes1 {
+		if hashes1[i] != hashes2[i] {
+			t.Errorf("Hash mismatch at chunk %d: %s vs %s", i, hashes1[i], hashes2[i])
+		}
+	}
+}
+
+func TestChunker_ShiftedData(t *testing.T) {
+	// Test that shifted data still shares chunks (the key CDC benefit)
+	// Use deterministic random data for reproducible test results
+	rng := mathrand.New(mathrand.NewSource(42))
+
+	original := make([]byte, 100*1024)
+	rng.Read(original)
+
+	// Create shifted version (prepend some bytes)
+	prefix := make([]byte, 1000)
+	rng.Read(prefix)
+	shifted := append(prefix, original...)
+
+	// Chunk both
+	config := DefaultChunkerConfig()
+
+	chunker1 := NewChunker(bytes.NewReader(original), config)
+	hashes1 := make(map[string]bool)
+	for {
+		chunk, err := chunker1.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			t.Fatal(err)
+		}
+		hashes1[chunk.Hash] = true
+	}
+
+	chunker2 := NewChunker(bytes.NewReader(shifted), config)
+	var matched, total int
+	for {
+		chunk, err := chunker2.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			t.Fatal(err)
+		}
+		total++
+		if hashes1[chunk.Hash] {
+			matched++
+		}
+	}
+
+	// Should have significant overlap despite the shift
+	overlapRatio := float64(matched) / float64(total)
+	t.Logf("Chunk overlap after %d-byte shift: %.1f%% (%d/%d chunks)",
+		len(prefix), overlapRatio*100, matched, total)
+
+	// We expect at least 50% overlap for content-defined chunking
+	if overlapRatio < 0.5 {
+		t.Errorf("Low chunk overlap: %.1f%% (expected >50%%)", overlapRatio*100)
+	}
+}
+
+func TestChunker_SmallFile(t *testing.T) {
+	// File smaller than min chunk size
+	data := []byte("hello world")
+	chunker := NewChunker(bytes.NewReader(data), DefaultChunkerConfig())
+
+	chunk, err := chunker.Next()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if chunk.Length != len(data) {
+		t.Errorf("Expected chunk length %d, got %d", len(data), chunk.Length)
+	}
+
+	// Should be EOF after
+	_, err = chunker.Next()
+	if err != io.EOF {
+		t.Errorf("Expected EOF, got %v", err)
+	}
+}
+
+func TestChunker_EmptyFile(t *testing.T) {
+	chunker := NewChunker(bytes.NewReader(nil), DefaultChunkerConfig())
+
+	_, err := chunker.Next()
+	if err != io.EOF {
+		t.Errorf("Expected EOF for empty file, got %v", err)
+	}
+}
+
+func TestHashData(t *testing.T) {
+	hash := HashData([]byte("test"))
+	if len(hash) != 64 {
+		t.Errorf("Expected 64-char hash, got %d", len(hash))
+	}
+
+	// Known SHA-256 of "test"
+	expected := "9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08"
+	if hash != expected {
+		t.Errorf("Hash mismatch: got %s, want %s", hash, expected)
+	}
+}
+
+func BenchmarkChunker(b *testing.B) {
+	// 1MB of random data
+	data := make([]byte, 1024*1024)
+	rand.Read(data)
+
+	b.ResetTimer()
+	b.SetBytes(int64(len(data)))
+
+	for i := 0; i < b.N; i++ {
+		chunker := NewChunker(bytes.NewReader(data), DefaultChunkerConfig())
+		for {
+			_, err := chunker.Next()
+			if err == io.EOF {
+				break
+			}
+			if err != nil {
+				b.Fatal(err)
+			}
+		}
+	}
+}

internal/dedup/index.go

@@ -0,0 +1,306 @@
+package dedup
+
+import (
+	"database/sql"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+
+	_ "github.com/mattn/go-sqlite3" // SQLite driver
+)
+
+// ChunkIndex provides fast chunk lookups using SQLite
+type ChunkIndex struct {
+	db     *sql.DB
+	dbPath string
+}
+
+// NewChunkIndex opens or creates a chunk index database at the default location
+func NewChunkIndex(basePath string) (*ChunkIndex, error) {
+	dbPath := filepath.Join(basePath, "chunks.db")
+	return NewChunkIndexAt(dbPath)
+}
+
+// NewChunkIndexAt opens or creates a chunk index database at a specific path
+// Use this to put the SQLite index on local storage when chunks are on NFS/CIFS
+func NewChunkIndexAt(dbPath string) (*ChunkIndex, error) {
+	// Ensure parent directory exists
+	if err := os.MkdirAll(filepath.Dir(dbPath), 0700); err != nil {
+		return nil, fmt.Errorf("failed to create index directory: %w", err)
+	}
+
+	// Add busy_timeout to handle lock contention gracefully
+	db, err := sql.Open("sqlite3", dbPath+"?_journal_mode=WAL&_synchronous=NORMAL&_busy_timeout=5000")
+	if err != nil {
+		return nil, fmt.Errorf("failed to open chunk index: %w", err)
+	}
+
+	// Test the connection and check for locking issues
+	if err := db.Ping(); err != nil {
+		db.Close()
+		if isNFSLockingError(err) {
+			return nil, fmt.Errorf("database locked (common on NFS/CIFS): %w\n\n"+
+				"HINT: Use --index-db to put the SQLite index on local storage:\n"+
+				"  dbbackup dedup ... --index-db /var/lib/dbbackup/dedup-index.db", err)
+		}
+		return nil, fmt.Errorf("failed to connect to chunk index: %w", err)
+	}
+
+	idx := &ChunkIndex{db: db, dbPath: dbPath}
+	if err := idx.migrate(); err != nil {
+		db.Close()
+		if isNFSLockingError(err) {
+			return nil, fmt.Errorf("database locked during migration (common on NFS/CIFS): %w\n\n"+
+				"HINT: Use --index-db to put the SQLite index on local storage:\n"+
+				"  dbbackup dedup ... --index-db /var/lib/dbbackup/dedup-index.db", err)
+		}
+		return nil, err
+	}
+
+	return idx, nil
+}
+
+// isNFSLockingError checks if an error is likely due to NFS/CIFS locking issues
+func isNFSLockingError(err error) bool {
+	if err == nil {
+		return false
+	}
+	errStr := err.Error()
+	return strings.Contains(errStr, "database is locked") ||
+		strings.Contains(errStr, "SQLITE_BUSY") ||
+		strings.Contains(errStr, "cannot lock") ||
+		strings.Contains(errStr, "lock protocol")
+}
+
+// migrate creates the schema if needed
+func (idx *ChunkIndex) migrate() error {
+	schema := `
+		CREATE TABLE IF NOT EXISTS chunks (
+			hash TEXT PRIMARY KEY,
+			size_raw INTEGER NOT NULL,
+			size_stored INTEGER NOT NULL,
+			created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+			last_accessed DATETIME,
+			ref_count INTEGER DEFAULT 1
+		);
+
+		CREATE TABLE IF NOT EXISTS manifests (
+			id TEXT PRIMARY KEY,
+			database_type TEXT,
+			database_name TEXT,
+			database_host TEXT,
+			created_at DATETIME,
+			original_size INTEGER,
+			stored_size INTEGER,
+			chunk_count INTEGER,
+			new_chunks INTEGER,
+			dedup_ratio REAL,
+			sha256 TEXT,
+			verified_at DATETIME
+		);
+
+		CREATE INDEX IF NOT EXISTS idx_chunks_created ON chunks(created_at);
+		CREATE INDEX IF NOT EXISTS idx_chunks_accessed ON chunks(last_accessed);
+		CREATE INDEX IF NOT EXISTS idx_manifests_created ON manifests(created_at);
+		CREATE INDEX IF NOT EXISTS idx_manifests_database ON manifests(database_name);
+	`
+
+	_, err := idx.db.Exec(schema)
+	return err
+}
+
+// Close closes the database
+func (idx *ChunkIndex) Close() error {
+	return idx.db.Close()
+}
+
+// AddChunk records a chunk in the index
+func (idx *ChunkIndex) AddChunk(hash string, sizeRaw, sizeStored int) error {
+	_, err := idx.db.Exec(`
+		INSERT INTO chunks (hash, size_raw, size_stored, created_at, last_accessed, ref_count)
+		VALUES (?, ?, ?, ?, ?, 1)
+		ON CONFLICT(hash) DO UPDATE SET
+			ref_count = ref_count + 1,
+			last_accessed = ?
+	`, hash, sizeRaw, sizeStored, time.Now(), time.Now(), time.Now())
+	return err
+}
+
+// HasChunk checks if a chunk exists in the index
+func (idx *ChunkIndex) HasChunk(hash string) (bool, error) {
+	var count int
+	err := idx.db.QueryRow("SELECT COUNT(*) FROM chunks WHERE hash = ?", hash).Scan(&count)
+	return count > 0, err
+}
+
+// GetChunk retrieves chunk metadata
+func (idx *ChunkIndex) GetChunk(hash string) (*ChunkMeta, error) {
+	var m ChunkMeta
+	err := idx.db.QueryRow(`
+		SELECT hash, size_raw, size_stored, created_at, ref_count
+		FROM chunks WHERE hash = ?
+	`, hash).Scan(&m.Hash, &m.SizeRaw, &m.SizeStored, &m.CreatedAt, &m.RefCount)
+	if err == sql.ErrNoRows {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, err
+	}
+	return &m, nil
+}
+
+// ChunkMeta holds metadata about a chunk
+type ChunkMeta struct {
+	Hash       string
+	SizeRaw    int64
+	SizeStored int64
+	CreatedAt  time.Time
+	RefCount   int
+}
+
+// DecrementRef decreases the reference count for a chunk
+// Returns true if the chunk should be deleted (ref_count <= 0)
+func (idx *ChunkIndex) DecrementRef(hash string) (shouldDelete bool, err error) {
+	result, err := idx.db.Exec(`
+		UPDATE chunks SET ref_count = ref_count - 1 WHERE hash = ?
+	`, hash)
+	if err != nil {
+		return false, err
+	}
+
+	affected, _ := result.RowsAffected()
+	if affected == 0 {
+		return false, nil
+	}
+
+	var refCount int
+	err = idx.db.QueryRow("SELECT ref_count FROM chunks WHERE hash = ?", hash).Scan(&refCount)
+	if err != nil {
+		return false, err
+	}
+
+	return refCount <= 0, nil
+}
+
+// RemoveChunk removes a chunk from the index
+func (idx *ChunkIndex) RemoveChunk(hash string) error {
+	_, err := idx.db.Exec("DELETE FROM chunks WHERE hash = ?", hash)
+	return err
+}
+
+// AddManifest records a manifest in the index
+func (idx *ChunkIndex) AddManifest(m *Manifest) error {
+	_, err := idx.db.Exec(`
+		INSERT OR REPLACE INTO manifests
+		(id, database_type, database_name, database_host, created_at, 
+		 original_size, stored_size, chunk_count, new_chunks, dedup_ratio, sha256)
+		VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`, m.ID, m.DatabaseType, m.DatabaseName, m.DatabaseHost, m.CreatedAt,
+		m.OriginalSize, m.StoredSize, m.ChunkCount, m.NewChunks, m.DedupRatio, m.SHA256)
+	return err
+}
+
+// RemoveManifest removes a manifest from the index
+func (idx *ChunkIndex) RemoveManifest(id string) error {
+	_, err := idx.db.Exec("DELETE FROM manifests WHERE id = ?", id)
+	return err
+}
+
+// UpdateManifestVerified updates the verified timestamp for a manifest
+func (idx *ChunkIndex) UpdateManifestVerified(id string, verifiedAt time.Time) error {
+	_, err := idx.db.Exec("UPDATE manifests SET verified_at = ? WHERE id = ?", verifiedAt, id)
+	return err
+}
+
+// IndexStats holds statistics about the dedup index
+type IndexStats struct {
+	TotalChunks     int64
+	TotalManifests  int64
+	TotalSizeRaw    int64   // Uncompressed, undeduplicated (per-chunk)
+	TotalSizeStored int64   // On-disk after dedup+compression (per-chunk)
+	DedupRatio      float64 // Based on manifests (real dedup ratio)
+	OldestChunk     time.Time
+	NewestChunk     time.Time
+
+	// Manifest-based stats (accurate dedup calculation)
+	TotalBackupSize int64 // Sum of all backup original sizes
+	TotalNewData    int64 // Sum of all new chunks stored
+	SpaceSaved      int64 // Difference = what dedup saved
+}
+
+// Stats returns statistics about the index
+func (idx *ChunkIndex) Stats() (*IndexStats, error) {
+	stats := &IndexStats{}
+
+	var oldestStr, newestStr string
+	err := idx.db.QueryRow(`
+		SELECT 
+			COUNT(*),
+			COALESCE(SUM(size_raw), 0),
+			COALESCE(SUM(size_stored), 0),
+			COALESCE(MIN(created_at), ''),
+			COALESCE(MAX(created_at), '')
+		FROM chunks
+	`).Scan(&stats.TotalChunks, &stats.TotalSizeRaw, &stats.TotalSizeStored,
+		&oldestStr, &newestStr)
+	if err != nil {
+		return nil, err
+	}
+
+	// Parse time strings
+	if oldestStr != "" {
+		stats.OldestChunk, _ = time.Parse("2006-01-02 15:04:05", oldestStr)
+	}
+	if newestStr != "" {
+		stats.NewestChunk, _ = time.Parse("2006-01-02 15:04:05", newestStr)
+	}
+
+	idx.db.QueryRow("SELECT COUNT(*) FROM manifests").Scan(&stats.TotalManifests)
+
+	// Calculate accurate dedup ratio from manifests
+	// Sum all backup original sizes and all new data stored
+	err = idx.db.QueryRow(`
+		SELECT 
+			COALESCE(SUM(original_size), 0),
+			COALESCE(SUM(stored_size), 0)
+		FROM manifests
+	`).Scan(&stats.TotalBackupSize, &stats.TotalNewData)
+	if err != nil {
+		return nil, err
+	}
+
+	// Calculate real dedup ratio: how much data was deduplicated across all backups
+	if stats.TotalBackupSize > 0 {
+		stats.DedupRatio = 1.0 - float64(stats.TotalNewData)/float64(stats.TotalBackupSize)
+		stats.SpaceSaved = stats.TotalBackupSize - stats.TotalNewData
+	}
+
+	return stats, nil
+}
+
+// ListOrphanedChunks returns chunks that have ref_count <= 0
+func (idx *ChunkIndex) ListOrphanedChunks() ([]string, error) {
+	rows, err := idx.db.Query("SELECT hash FROM chunks WHERE ref_count <= 0")
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var hashes []string
+	for rows.Next() {
+		var hash string
+		if err := rows.Scan(&hash); err != nil {
+			continue
+		}
+		hashes = append(hashes, hash)
+	}
+	return hashes, rows.Err()
+}
+
+// Vacuum cleans up the database
+func (idx *ChunkIndex) Vacuum() error {
+	_, err := idx.db.Exec("VACUUM")
+	return err
+}

internal/dedup/manifest.go

@@ -0,0 +1,189 @@
+package dedup
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"time"
+)
+
+// Manifest describes a single backup as a list of chunks
+type Manifest struct {
+	// ID is the unique identifier (typically timestamp-based)
+	ID string `json:"id"`
+
+	// Name is an optional human-readable name
+	Name string `json:"name,omitempty"`
+
+	// CreatedAt is when this backup was created
+	CreatedAt time.Time `json:"created_at"`
+
+	// Database information
+	DatabaseType string `json:"database_type"` // postgres, mysql
+	DatabaseName string `json:"database_name"`
+	DatabaseHost string `json:"database_host"`
+
+	// Chunks is the ordered list of chunk hashes
+	// The file is reconstructed by concatenating chunks in order
+	Chunks []ChunkRef `json:"chunks"`
+
+	// Stats about the backup
+	OriginalSize int64 `json:"original_size"`  // Size before deduplication
+	StoredSize   int64 `json:"stored_size"`    // Size after dedup (new chunks only)
+	ChunkCount   int   `json:"chunk_count"`    // Total chunks
+	NewChunks    int   `json:"new_chunks"`     // Chunks that weren't deduplicated
+	DedupRatio   float64 `json:"dedup_ratio"` // 1.0 = no dedup, 0.0 = 100% dedup
+
+	// Encryption and compression settings used
+	Encrypted    bool `json:"encrypted"`
+	Compressed   bool `json:"compressed"`
+	Decompressed bool `json:"decompressed,omitempty"` // Input was auto-decompressed before chunking
+
+	// Verification
+	SHA256     string    `json:"sha256"`              // Hash of reconstructed file
+	VerifiedAt time.Time `json:"verified_at,omitempty"`
+}
+
+// ChunkRef references a chunk in the manifest
+type ChunkRef struct {
+	Hash   string `json:"h"`           // SHA-256 hash (64 chars)
+	Offset int64  `json:"o"`           // Offset in original file
+	Length int    `json:"l"`           // Chunk length
+}
+
+// ManifestStore manages backup manifests
+type ManifestStore struct {
+	basePath string
+}
+
+// NewManifestStore creates a new manifest store
+func NewManifestStore(basePath string) (*ManifestStore, error) {
+	manifestDir := filepath.Join(basePath, "manifests")
+	if err := os.MkdirAll(manifestDir, 0700); err != nil {
+		return nil, fmt.Errorf("failed to create manifest directory: %w", err)
+	}
+	return &ManifestStore{basePath: basePath}, nil
+}
+
+// manifestPath returns the path for a manifest ID
+func (s *ManifestStore) manifestPath(id string) string {
+	return filepath.Join(s.basePath, "manifests", id+".manifest.json")
+}
+
+// Save writes a manifest to disk
+func (s *ManifestStore) Save(m *Manifest) error {
+	path := s.manifestPath(m.ID)
+
+	data, err := json.MarshalIndent(m, "", "  ")
+	if err != nil {
+		return fmt.Errorf("failed to marshal manifest: %w", err)
+	}
+
+	// Atomic write
+	tmpPath := path + ".tmp"
+	if err := os.WriteFile(tmpPath, data, 0600); err != nil {
+		return fmt.Errorf("failed to write manifest: %w", err)
+	}
+
+	if err := os.Rename(tmpPath, path); err != nil {
+		os.Remove(tmpPath)
+		return fmt.Errorf("failed to commit manifest: %w", err)
+	}
+
+	return nil
+}
+
+// Load reads a manifest from disk
+func (s *ManifestStore) Load(id string) (*Manifest, error) {
+	path := s.manifestPath(id)
+
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return nil, fmt.Errorf("failed to read manifest %s: %w", id, err)
+	}
+
+	var m Manifest
+	if err := json.Unmarshal(data, &m); err != nil {
+		return nil, fmt.Errorf("failed to parse manifest %s: %w", id, err)
+	}
+
+	return &m, nil
+}
+
+// Delete removes a manifest
+func (s *ManifestStore) Delete(id string) error {
+	path := s.manifestPath(id)
+	if err := os.Remove(path); err != nil && !os.IsNotExist(err) {
+		return fmt.Errorf("failed to delete manifest %s: %w", id, err)
+	}
+	return nil
+}
+
+// List returns all manifest IDs
+func (s *ManifestStore) List() ([]string, error) {
+	manifestDir := filepath.Join(s.basePath, "manifests")
+	entries, err := os.ReadDir(manifestDir)
+	if err != nil {
+		return nil, fmt.Errorf("failed to list manifests: %w", err)
+	}
+
+	var ids []string
+	for _, e := range entries {
+		if e.IsDir() {
+			continue
+		}
+		name := e.Name()
+		if len(name) > 14 && name[len(name)-14:] == ".manifest.json" {
+			ids = append(ids, name[:len(name)-14])
+		}
+	}
+
+	return ids, nil
+}
+
+// ListAll returns all manifests sorted by creation time (newest first)
+func (s *ManifestStore) ListAll() ([]*Manifest, error) {
+	ids, err := s.List()
+	if err != nil {
+		return nil, err
+	}
+
+	var manifests []*Manifest
+	for _, id := range ids {
+		m, err := s.Load(id)
+		if err != nil {
+			continue // Skip corrupted manifests
+		}
+		manifests = append(manifests, m)
+	}
+
+	// Sort by creation time (newest first)
+	for i := 0; i < len(manifests)-1; i++ {
+		for j := i + 1; j < len(manifests); j++ {
+			if manifests[j].CreatedAt.After(manifests[i].CreatedAt) {
+				manifests[i], manifests[j] = manifests[j], manifests[i]
+			}
+		}
+	}
+
+	return manifests, nil
+}
+
+// GetChunkHashes returns all unique chunk hashes referenced by manifests
+func (s *ManifestStore) GetChunkHashes() (map[string]int, error) {
+	manifests, err := s.ListAll()
+	if err != nil {
+		return nil, err
+	}
+
+	// Map hash -> reference count
+	refs := make(map[string]int)
+	for _, m := range manifests {
+		for _, c := range m.Chunks {
+			refs[c.Hash]++
+		}
+	}
+
+	return refs, nil
+}

internal/dedup/metrics.go

@@ -0,0 +1,235 @@
+package dedup
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+// DedupMetrics holds deduplication statistics for Prometheus
+type DedupMetrics struct {
+	// Global stats
+	TotalChunks     int64
+	TotalManifests  int64
+	TotalBackupSize int64   // Sum of all backup original sizes
+	TotalNewData    int64   // Sum of all new chunks stored
+	SpaceSaved      int64   // Bytes saved by deduplication
+	DedupRatio      float64 // Overall dedup ratio (0-1)
+	DiskUsage       int64   // Actual bytes on disk
+
+	// Per-database stats
+	ByDatabase map[string]*DatabaseDedupMetrics
+}
+
+// DatabaseDedupMetrics holds per-database dedup stats
+type DatabaseDedupMetrics struct {
+	Database       string
+	BackupCount    int
+	TotalSize      int64
+	StoredSize     int64
+	DedupRatio     float64
+	LastBackupTime time.Time
+	LastVerified   time.Time
+}
+
+// CollectMetrics gathers dedup statistics from the index and store
+func CollectMetrics(basePath string, indexPath string) (*DedupMetrics, error) {
+	var idx *ChunkIndex
+	var err error
+
+	if indexPath != "" {
+		idx, err = NewChunkIndexAt(indexPath)
+	} else {
+		idx, err = NewChunkIndex(basePath)
+	}
+	if err != nil {
+		return nil, fmt.Errorf("failed to open chunk index: %w", err)
+	}
+	defer idx.Close()
+
+	store, err := NewChunkStore(StoreConfig{BasePath: basePath})
+	if err != nil {
+		return nil, fmt.Errorf("failed to open chunk store: %w", err)
+	}
+
+	// Get index stats
+	stats, err := idx.Stats()
+	if err != nil {
+		return nil, fmt.Errorf("failed to get index stats: %w", err)
+	}
+
+	// Get store stats
+	storeStats, err := store.Stats()
+	if err != nil {
+		return nil, fmt.Errorf("failed to get store stats: %w", err)
+	}
+
+	metrics := &DedupMetrics{
+		TotalChunks:     stats.TotalChunks,
+		TotalManifests:  stats.TotalManifests,
+		TotalBackupSize: stats.TotalBackupSize,
+		TotalNewData:    stats.TotalNewData,
+		SpaceSaved:      stats.SpaceSaved,
+		DedupRatio:      stats.DedupRatio,
+		DiskUsage:       storeStats.TotalSize,
+		ByDatabase:      make(map[string]*DatabaseDedupMetrics),
+	}
+
+	// Collect per-database metrics from manifest store
+	manifestStore, err := NewManifestStore(basePath)
+	if err != nil {
+		return metrics, nil // Return partial metrics
+	}
+
+	manifests, err := manifestStore.ListAll()
+	if err != nil {
+		return metrics, nil // Return partial metrics
+	}
+
+	for _, m := range manifests {
+		dbKey := m.DatabaseName
+		if dbKey == "" {
+			dbKey = "_default"
+		}
+
+		dbMetrics, ok := metrics.ByDatabase[dbKey]
+		if !ok {
+			dbMetrics = &DatabaseDedupMetrics{
+				Database: dbKey,
+			}
+			metrics.ByDatabase[dbKey] = dbMetrics
+		}
+
+		dbMetrics.BackupCount++
+		dbMetrics.TotalSize += m.OriginalSize
+		dbMetrics.StoredSize += m.StoredSize
+
+		if m.CreatedAt.After(dbMetrics.LastBackupTime) {
+			dbMetrics.LastBackupTime = m.CreatedAt
+		}
+		if !m.VerifiedAt.IsZero() && m.VerifiedAt.After(dbMetrics.LastVerified) {
+			dbMetrics.LastVerified = m.VerifiedAt
+		}
+	}
+
+	// Calculate per-database dedup ratios
+	for _, dbMetrics := range metrics.ByDatabase {
+		if dbMetrics.TotalSize > 0 {
+			dbMetrics.DedupRatio = 1.0 - float64(dbMetrics.StoredSize)/float64(dbMetrics.TotalSize)
+		}
+	}
+
+	return metrics, nil
+}
+
+// WritePrometheusTextfile writes dedup metrics in Prometheus format
+func WritePrometheusTextfile(path string, instance string, basePath string, indexPath string) error {
+	metrics, err := CollectMetrics(basePath, indexPath)
+	if err != nil {
+		return err
+	}
+
+	output := FormatPrometheusMetrics(metrics, instance)
+
+	// Atomic write
+	dir := filepath.Dir(path)
+	if err := os.MkdirAll(dir, 0755); err != nil {
+		return fmt.Errorf("failed to create directory: %w", err)
+	}
+
+	tmpPath := path + ".tmp"
+	if err := os.WriteFile(tmpPath, []byte(output), 0644); err != nil {
+		return fmt.Errorf("failed to write temp file: %w", err)
+	}
+
+	if err := os.Rename(tmpPath, path); err != nil {
+		os.Remove(tmpPath)
+		return fmt.Errorf("failed to rename temp file: %w", err)
+	}
+
+	return nil
+}
+
+// FormatPrometheusMetrics formats dedup metrics in Prometheus exposition format
+func FormatPrometheusMetrics(m *DedupMetrics, instance string) string {
+	var b strings.Builder
+	now := time.Now().Unix()
+
+	b.WriteString("# DBBackup Deduplication Prometheus Metrics\n")
+	b.WriteString(fmt.Sprintf("# Generated at: %s\n", time.Now().Format(time.RFC3339)))
+	b.WriteString(fmt.Sprintf("# Instance: %s\n", instance))
+	b.WriteString("\n")
+
+	// Global dedup metrics
+	b.WriteString("# HELP dbbackup_dedup_chunks_total Total number of unique chunks stored\n")
+	b.WriteString("# TYPE dbbackup_dedup_chunks_total gauge\n")
+	b.WriteString(fmt.Sprintf("dbbackup_dedup_chunks_total{instance=%q} %d\n", instance, m.TotalChunks))
+	b.WriteString("\n")
+
+	b.WriteString("# HELP dbbackup_dedup_manifests_total Total number of deduplicated backups\n")
+	b.WriteString("# TYPE dbbackup_dedup_manifests_total gauge\n")
+	b.WriteString(fmt.Sprintf("dbbackup_dedup_manifests_total{instance=%q} %d\n", instance, m.TotalManifests))
+	b.WriteString("\n")
+
+	b.WriteString("# HELP dbbackup_dedup_backup_bytes_total Total logical size of all backups in bytes\n")
+	b.WriteString("# TYPE dbbackup_dedup_backup_bytes_total gauge\n")
+	b.WriteString(fmt.Sprintf("dbbackup_dedup_backup_bytes_total{instance=%q} %d\n", instance, m.TotalBackupSize))
+	b.WriteString("\n")
+
+	b.WriteString("# HELP dbbackup_dedup_stored_bytes_total Total unique data stored in bytes (after dedup)\n")
+	b.WriteString("# TYPE dbbackup_dedup_stored_bytes_total gauge\n")
+	b.WriteString(fmt.Sprintf("dbbackup_dedup_stored_bytes_total{instance=%q} %d\n", instance, m.TotalNewData))
+	b.WriteString("\n")
+
+	b.WriteString("# HELP dbbackup_dedup_space_saved_bytes Bytes saved by deduplication\n")
+	b.WriteString("# TYPE dbbackup_dedup_space_saved_bytes gauge\n")
+	b.WriteString(fmt.Sprintf("dbbackup_dedup_space_saved_bytes{instance=%q} %d\n", instance, m.SpaceSaved))
+	b.WriteString("\n")
+
+	b.WriteString("# HELP dbbackup_dedup_ratio Deduplication ratio (0-1, higher is better)\n")
+	b.WriteString("# TYPE dbbackup_dedup_ratio gauge\n")
+	b.WriteString(fmt.Sprintf("dbbackup_dedup_ratio{instance=%q} %.4f\n", instance, m.DedupRatio))
+	b.WriteString("\n")
+
+	b.WriteString("# HELP dbbackup_dedup_disk_usage_bytes Actual disk usage of chunk store\n")
+	b.WriteString("# TYPE dbbackup_dedup_disk_usage_bytes gauge\n")
+	b.WriteString(fmt.Sprintf("dbbackup_dedup_disk_usage_bytes{instance=%q} %d\n", instance, m.DiskUsage))
+	b.WriteString("\n")
+
+	// Per-database metrics
+	if len(m.ByDatabase) > 0 {
+		b.WriteString("# HELP dbbackup_dedup_database_backup_count Number of deduplicated backups per database\n")
+		b.WriteString("# TYPE dbbackup_dedup_database_backup_count gauge\n")
+		for _, db := range m.ByDatabase {
+			b.WriteString(fmt.Sprintf("dbbackup_dedup_database_backup_count{instance=%q,database=%q} %d\n",
+				instance, db.Database, db.BackupCount))
+		}
+		b.WriteString("\n")
+
+		b.WriteString("# HELP dbbackup_dedup_database_ratio Deduplication ratio per database (0-1)\n")
+		b.WriteString("# TYPE dbbackup_dedup_database_ratio gauge\n")
+		for _, db := range m.ByDatabase {
+			b.WriteString(fmt.Sprintf("dbbackup_dedup_database_ratio{instance=%q,database=%q} %.4f\n",
+				instance, db.Database, db.DedupRatio))
+		}
+		b.WriteString("\n")
+
+		b.WriteString("# HELP dbbackup_dedup_database_last_backup_timestamp Last backup timestamp per database\n")
+		b.WriteString("# TYPE dbbackup_dedup_database_last_backup_timestamp gauge\n")
+		for _, db := range m.ByDatabase {
+			if !db.LastBackupTime.IsZero() {
+				b.WriteString(fmt.Sprintf("dbbackup_dedup_database_last_backup_timestamp{instance=%q,database=%q} %d\n",
+					instance, db.Database, db.LastBackupTime.Unix()))
+			}
+		}
+		b.WriteString("\n")
+	}
+
+	b.WriteString("# HELP dbbackup_dedup_scrape_timestamp Unix timestamp when dedup metrics were collected\n")
+	b.WriteString("# TYPE dbbackup_dedup_scrape_timestamp gauge\n")
+	b.WriteString(fmt.Sprintf("dbbackup_dedup_scrape_timestamp{instance=%q} %d\n", instance, now))
+
+	return b.String()
+}

internal/dedup/store.go

@@ -0,0 +1,367 @@
+package dedup
+
+import (
+	"compress/gzip"
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/rand"
+	"crypto/sha256"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"sync"
+)
+
+// ChunkStore manages content-addressed chunk storage
+// Chunks are stored as: <base>/<prefix>/<hash>.chunk[.gz][.enc]
+type ChunkStore struct {
+	basePath       string
+	compress       bool
+	encryptionKey  []byte // 32 bytes for AES-256
+	mu             sync.RWMutex
+	existingChunks map[string]bool // Cache of known chunks
+}
+
+// StoreConfig holds configuration for the chunk store
+type StoreConfig struct {
+	BasePath      string
+	Compress      bool   // Enable gzip compression
+	EncryptionKey string // Optional: hex-encoded 32-byte key for AES-256-GCM
+}
+
+// NewChunkStore creates a new chunk store
+func NewChunkStore(config StoreConfig) (*ChunkStore, error) {
+	store := &ChunkStore{
+		basePath:       config.BasePath,
+		compress:       config.Compress,
+		existingChunks: make(map[string]bool),
+	}
+
+	// Parse encryption key if provided
+	if config.EncryptionKey != "" {
+		key, err := hex.DecodeString(config.EncryptionKey)
+		if err != nil {
+			return nil, fmt.Errorf("invalid encryption key: %w", err)
+		}
+		if len(key) != 32 {
+			return nil, fmt.Errorf("encryption key must be 32 bytes (got %d)", len(key))
+		}
+		store.encryptionKey = key
+	}
+
+	// Create base directory structure
+	if err := os.MkdirAll(config.BasePath, 0700); err != nil {
+		return nil, fmt.Errorf("failed to create chunk store: %w", err)
+	}
+
+	// Create chunks and manifests directories
+	for _, dir := range []string{"chunks", "manifests"} {
+		if err := os.MkdirAll(filepath.Join(config.BasePath, dir), 0700); err != nil {
+			return nil, fmt.Errorf("failed to create %s directory: %w", dir, err)
+		}
+	}
+
+	return store, nil
+}
+
+// chunkPath returns the filesystem path for a chunk hash
+// Uses 2-character prefix for directory sharding (256 subdirs)
+func (s *ChunkStore) chunkPath(hash string) string {
+	if len(hash) < 2 {
+		return filepath.Join(s.basePath, "chunks", "xx", hash+s.chunkExt())
+	}
+	prefix := hash[:2]
+	return filepath.Join(s.basePath, "chunks", prefix, hash+s.chunkExt())
+}
+
+// chunkExt returns the file extension based on compression/encryption settings
+func (s *ChunkStore) chunkExt() string {
+	ext := ".chunk"
+	if s.compress {
+		ext += ".gz"
+	}
+	if s.encryptionKey != nil {
+		ext += ".enc"
+	}
+	return ext
+}
+
+// Has checks if a chunk exists in the store
+func (s *ChunkStore) Has(hash string) bool {
+	s.mu.RLock()
+	if exists, ok := s.existingChunks[hash]; ok {
+		s.mu.RUnlock()
+		return exists
+	}
+	s.mu.RUnlock()
+
+	// Check filesystem
+	path := s.chunkPath(hash)
+	_, err := os.Stat(path)
+	exists := err == nil
+
+	s.mu.Lock()
+	s.existingChunks[hash] = exists
+	s.mu.Unlock()
+
+	return exists
+}
+
+// Put stores a chunk, returning true if it was new (not deduplicated)
+func (s *ChunkStore) Put(chunk *Chunk) (isNew bool, err error) {
+	// Check if already exists (deduplication!)
+	if s.Has(chunk.Hash) {
+		return false, nil
+	}
+
+	path := s.chunkPath(chunk.Hash)
+
+	// Create prefix directory
+	if err := os.MkdirAll(filepath.Dir(path), 0700); err != nil {
+		return false, fmt.Errorf("failed to create chunk directory: %w", err)
+	}
+
+	// Prepare data
+	data := chunk.Data
+
+	// Compress if enabled
+	if s.compress {
+		data, err = s.compressData(data)
+		if err != nil {
+			return false, fmt.Errorf("compression failed: %w", err)
+		}
+	}
+
+	// Encrypt if enabled
+	if s.encryptionKey != nil {
+		data, err = s.encryptData(data)
+		if err != nil {
+			return false, fmt.Errorf("encryption failed: %w", err)
+		}
+	}
+
+	// Write atomically (write to temp, then rename)
+	tmpPath := path + ".tmp"
+	if err := os.WriteFile(tmpPath, data, 0600); err != nil {
+		return false, fmt.Errorf("failed to write chunk: %w", err)
+	}
+
+	if err := os.Rename(tmpPath, path); err != nil {
+		os.Remove(tmpPath)
+		return false, fmt.Errorf("failed to commit chunk: %w", err)
+	}
+
+	// Update cache
+	s.mu.Lock()
+	s.existingChunks[chunk.Hash] = true
+	s.mu.Unlock()
+
+	return true, nil
+}
+
+// Get retrieves a chunk by hash
+func (s *ChunkStore) Get(hash string) (*Chunk, error) {
+	path := s.chunkPath(hash)
+
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return nil, fmt.Errorf("failed to read chunk %s: %w", hash, err)
+	}
+
+	// Decrypt if encrypted
+	if s.encryptionKey != nil {
+		data, err = s.decryptData(data)
+		if err != nil {
+			return nil, fmt.Errorf("decryption failed: %w", err)
+		}
+	}
+
+	// Decompress if compressed
+	if s.compress {
+		data, err = s.decompressData(data)
+		if err != nil {
+			return nil, fmt.Errorf("decompression failed: %w", err)
+		}
+	}
+
+	// Verify hash
+	h := sha256.Sum256(data)
+	actualHash := hex.EncodeToString(h[:])
+	if actualHash != hash {
+		return nil, fmt.Errorf("chunk hash mismatch: expected %s, got %s", hash, actualHash)
+	}
+
+	return &Chunk{
+		Hash:   hash,
+		Data:   data,
+		Length: len(data),
+	}, nil
+}
+
+// Delete removes a chunk from the store
+func (s *ChunkStore) Delete(hash string) error {
+	path := s.chunkPath(hash)
+
+	if err := os.Remove(path); err != nil && !os.IsNotExist(err) {
+		return fmt.Errorf("failed to delete chunk %s: %w", hash, err)
+	}
+
+	s.mu.Lock()
+	delete(s.existingChunks, hash)
+	s.mu.Unlock()
+
+	return nil
+}
+
+// Stats returns storage statistics
+type StoreStats struct {
+	TotalChunks   int64
+	TotalSize     int64 // Bytes on disk (after compression/encryption)
+	UniqueSize    int64 // Bytes of unique data
+	Directories   int
+}
+
+// Stats returns statistics about the chunk store
+func (s *ChunkStore) Stats() (*StoreStats, error) {
+	stats := &StoreStats{}
+
+	chunksDir := filepath.Join(s.basePath, "chunks")
+	err := filepath.Walk(chunksDir, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if info.IsDir() {
+			stats.Directories++
+			return nil
+		}
+		stats.TotalChunks++
+		stats.TotalSize += info.Size()
+		return nil
+	})
+
+	return stats, err
+}
+
+// LoadIndex loads the existing chunk hashes into memory
+func (s *ChunkStore) LoadIndex() error {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	s.existingChunks = make(map[string]bool)
+
+	chunksDir := filepath.Join(s.basePath, "chunks")
+	return filepath.Walk(chunksDir, func(path string, info os.FileInfo, err error) error {
+		if err != nil || info.IsDir() {
+			return err
+		}
+
+		// Extract hash from filename
+		base := filepath.Base(path)
+		hash := base
+		// Remove extensions
+		for _, ext := range []string{".enc", ".gz", ".chunk"} {
+			if len(hash) > len(ext) && hash[len(hash)-len(ext):] == ext {
+				hash = hash[:len(hash)-len(ext)]
+			}
+		}
+		if len(hash) == 64 { // SHA-256 hex length
+			s.existingChunks[hash] = true
+		}
+
+		return nil
+	})
+}
+
+// compressData compresses data using gzip
+func (s *ChunkStore) compressData(data []byte) ([]byte, error) {
+	var buf []byte
+	w, err := gzip.NewWriterLevel((*bytesBuffer)(&buf), gzip.BestCompression)
+	if err != nil {
+		return nil, err
+	}
+	if _, err := w.Write(data); err != nil {
+		return nil, err
+	}
+	if err := w.Close(); err != nil {
+		return nil, err
+	}
+	return buf, nil
+}
+
+// bytesBuffer is a simple io.Writer that appends to a byte slice
+type bytesBuffer []byte
+
+func (b *bytesBuffer) Write(p []byte) (int, error) {
+	*b = append(*b, p...)
+	return len(p), nil
+}
+
+// decompressData decompresses gzip data
+func (s *ChunkStore) decompressData(data []byte) ([]byte, error) {
+	r, err := gzip.NewReader(&bytesReader{data: data})
+	if err != nil {
+		return nil, err
+	}
+	defer r.Close()
+	return io.ReadAll(r)
+}
+
+// bytesReader is a simple io.Reader from a byte slice
+type bytesReader struct {
+	data []byte
+	pos  int
+}
+
+func (r *bytesReader) Read(p []byte) (int, error) {
+	if r.pos >= len(r.data) {
+		return 0, io.EOF
+	}
+	n := copy(p, r.data[r.pos:])
+	r.pos += n
+	return n, nil
+}
+
+// encryptData encrypts data using AES-256-GCM
+func (s *ChunkStore) encryptData(plaintext []byte) ([]byte, error) {
+	block, err := aes.NewCipher(s.encryptionKey)
+	if err != nil {
+		return nil, err
+	}
+
+	gcm, err := cipher.NewGCM(block)
+	if err != nil {
+		return nil, err
+	}
+
+	nonce := make([]byte, gcm.NonceSize())
+	if _, err := rand.Read(nonce); err != nil {
+		return nil, err
+	}
+
+	// Prepend nonce to ciphertext
+	return gcm.Seal(nonce, nonce, plaintext, nil), nil
+}
+
+// decryptData decrypts AES-256-GCM encrypted data
+func (s *ChunkStore) decryptData(ciphertext []byte) ([]byte, error) {
+	block, err := aes.NewCipher(s.encryptionKey)
+	if err != nil {
+		return nil, err
+	}
+
+	gcm, err := cipher.NewGCM(block)
+	if err != nil {
+		return nil, err
+	}
+
+	if len(ciphertext) < gcm.NonceSize() {
+		return nil, fmt.Errorf("ciphertext too short")
+	}
+
+	nonce := ciphertext[:gcm.NonceSize()]
+	ciphertext = ciphertext[gcm.NonceSize():]
+
+	return gcm.Open(nil, nonce, ciphertext, nil)
+}

internal/drill/drill.go

@@ -223,11 +223,11 @@ func (r *DrillResult) IsSuccess() bool {
 
 // Summary returns a human-readable summary of the drill
 func (r *DrillResult) Summary() string {
-	status := "✅ PASSED"
+	status := "[OK] PASSED"
 	if !r.Success {
-		status = "❌ FAILED"
+		status = "[FAIL] FAILED"
 	} else if r.Status == StatusPartial {
-		status = "⚠️ PARTIAL"
+		status = "[WARN] PARTIAL"
 	}
 
 	return fmt.Sprintf("%s - %s (%.2fs) - %d tables, %d rows",

internal/drill/engine.go

@@ -41,20 +41,20 @@ func (e *Engine) Run(ctx context.Context, config *DrillConfig) (*DrillResult, er
 		TargetRTO:    float64(config.MaxRestoreSeconds),
 	}
 
-	e.log.Info("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
-	e.log.Info("  🧪 DR Drill: " + result.DrillID)
-	e.log.Info("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+	e.log.Info("=====================================================")
+	e.log.Info("  [TEST] DR Drill: " + result.DrillID)
+	e.log.Info("=====================================================")
 	e.log.Info("")
 
 	// Cleanup function for error cases
 	var containerID string
 	cleanup := func() {
 		if containerID != "" && config.CleanupOnExit && (result.Success || !config.KeepOnFailure) {
-			e.log.Info("🗑️  Cleaning up container...")
+			e.log.Info("[DEL]  Cleaning up container...")
 			e.docker.RemoveContainer(context.Background(), containerID)
 		} else if containerID != "" {
 			result.ContainerKept = true
-			e.log.Info("📦 Container kept for debugging: " + containerID)
+			e.log.Info("[PKG] Container kept for debugging: " + containerID)
 		}
 	}
 	defer cleanup()
@@ -88,7 +88,7 @@ func (e *Engine) Run(ctx context.Context, config *DrillConfig) (*DrillResult, er
 	}
 	containerID = container.ID
 	result.ContainerID = containerID
-	e.log.Info("📦 Container started: " + containerID[:12])
+	e.log.Info("[PKG] Container started: " + containerID[:12])
 
 	// Wait for container to be healthy
 	if err := e.docker.WaitForHealth(ctx, containerID, config.DatabaseType, config.ContainerTimeout); err != nil {
@@ -118,7 +118,7 @@ func (e *Engine) Run(ctx context.Context, config *DrillConfig) (*DrillResult, er
 	result.RestoreTime = time.Since(restoreStart).Seconds()
 	e.completePhase(&phase, fmt.Sprintf("Restored in %.2fs", result.RestoreTime))
 	result.Phases = append(result.Phases, phase)
-	e.log.Info(fmt.Sprintf("✅ Backup restored in %.2fs", result.RestoreTime))
+	e.log.Info(fmt.Sprintf("[OK] Backup restored in %.2fs", result.RestoreTime))
 
 	// Phase 4: Validate
 	phase = e.startPhase("Validate Database")
@@ -182,24 +182,24 @@ func (e *Engine) preflightChecks(ctx context.Context, config *DrillConfig) error
 	if err := e.docker.CheckDockerAvailable(ctx); err != nil {
 		return fmt.Errorf("docker not available: %w", err)
 	}
-	e.log.Info("✓ Docker is available")
+	e.log.Info("[OK] Docker is available")
 
 	// Check backup file exists
 	if _, err := os.Stat(config.BackupPath); err != nil {
 		return fmt.Errorf("backup file not found: %s", config.BackupPath)
 	}
-	e.log.Info("✓ Backup file exists: " + filepath.Base(config.BackupPath))
+	e.log.Info("[OK] Backup file exists: " + filepath.Base(config.BackupPath))
 
 	// Pull Docker image
 	image := config.ContainerImage
 	if image == "" {
 		image = GetDefaultImage(config.DatabaseType, "")
 	}
-	e.log.Info("⬇️  Pulling image: " + image)
+	e.log.Info("[DOWN]  Pulling image: " + image)
 	if err := e.docker.PullImage(ctx, image); err != nil {
 		return fmt.Errorf("failed to pull image: %w", err)
 	}
-	e.log.Info("✓ Image ready: " + image)
+	e.log.Info("[OK] Image ready: " + image)
 
 	return nil
 }
@@ -243,7 +243,7 @@ func (e *Engine) restoreBackup(ctx context.Context, config *DrillConfig, contain
 	backupName := filepath.Base(config.BackupPath)
 	containerBackupPath := "/tmp/" + backupName
 
-	e.log.Info("📁 Copying backup to container...")
+	e.log.Info("[DIR] Copying backup to container...")
 	if err := e.docker.CopyToContainer(ctx, containerID, config.BackupPath, containerBackupPath); err != nil {
 		return fmt.Errorf("failed to copy backup: %w", err)
 	}
@@ -256,7 +256,7 @@ func (e *Engine) restoreBackup(ctx context.Context, config *DrillConfig, contain
 	}
 
 	// Restore based on database type and format
-	e.log.Info("🔄 Restoring backup...")
+	e.log.Info("[EXEC] Restoring backup...")
 	return e.executeRestore(ctx, config, containerID, containerBackupPath, containerConfig)
 }
 
@@ -366,13 +366,13 @@ func (e *Engine) validateDatabase(ctx context.Context, config *DrillConfig, resu
 	tables, err := validator.GetTableList(ctx)
 	if err == nil {
 		result.TableCount = len(tables)
-		e.log.Info(fmt.Sprintf("📊 Tables found: %d", result.TableCount))
+		e.log.Info(fmt.Sprintf("[STATS] Tables found: %d", result.TableCount))
 	}
 
 	totalRows, err := validator.GetTotalRowCount(ctx)
 	if err == nil {
 		result.TotalRows = totalRows
-		e.log.Info(fmt.Sprintf("📊 Total rows: %d", result.TotalRows))
+		e.log.Info(fmt.Sprintf("[STATS] Total rows: %d", result.TotalRows))
 	}
 
 	dbSize, err := validator.GetDatabaseSize(ctx, config.DatabaseName)
@@ -387,9 +387,9 @@ func (e *Engine) validateDatabase(ctx context.Context, config *DrillConfig, resu
 			result.CheckResults = append(result.CheckResults, tr)
 			if !tr.Success {
 				errorCount++
-				e.log.Warn("❌ " + tr.Message)
+				e.log.Warn("[FAIL] " + tr.Message)
 			} else {
-				e.log.Info("✓ " + tr.Message)
+				e.log.Info("[OK] " + tr.Message)
 			}
 		}
 	}
@@ -404,9 +404,9 @@ func (e *Engine) validateDatabase(ctx context.Context, config *DrillConfig, resu
 			totalQueryTime += qr.Duration
 			if !qr.Success {
 				errorCount++
-				e.log.Warn(fmt.Sprintf("❌ %s: %s", qr.Name, qr.Error))
+				e.log.Warn(fmt.Sprintf("[FAIL] %s: %s", qr.Name, qr.Error))
 			} else {
-				e.log.Info(fmt.Sprintf("✓ %s: %s (%.0fms)", qr.Name, qr.Result, qr.Duration))
+				e.log.Info(fmt.Sprintf("[OK] %s: %s (%.0fms)", qr.Name, qr.Result, qr.Duration))
 			}
 		}
 		if len(queryResults) > 0 {
@@ -421,9 +421,9 @@ func (e *Engine) validateDatabase(ctx context.Context, config *DrillConfig, resu
 			result.CheckResults = append(result.CheckResults, cr)
 			if !cr.Success {
 				errorCount++
-				e.log.Warn("❌ " + cr.Message)
+				e.log.Warn("[FAIL] " + cr.Message)
 			} else {
-				e.log.Info("✓ " + cr.Message)
+				e.log.Info("[OK] " + cr.Message)
 			}
 		}
 	}
@@ -433,7 +433,7 @@ func (e *Engine) validateDatabase(ctx context.Context, config *DrillConfig, resu
 		errorCount++
 		msg := fmt.Sprintf("Total rows (%d) below minimum (%d)", result.TotalRows, config.MinRowCount)
 		result.Warnings = append(result.Warnings, msg)
-		e.log.Warn("⚠️ " + msg)
+		e.log.Warn("[WARN] " + msg)
 	}
 
 	return errorCount
@@ -441,7 +441,7 @@ func (e *Engine) validateDatabase(ctx context.Context, config *DrillConfig, resu
 
 // startPhase starts a new drill phase
 func (e *Engine) startPhase(name string) DrillPhase {
-	e.log.Info("▶️  " + name)
+	e.log.Info("[RUN]  " + name)
 	return DrillPhase{
 		Name:      name,
 		Status:    "running",
@@ -463,7 +463,7 @@ func (e *Engine) failPhase(phase *DrillPhase, message string) {
 	phase.Duration = phase.EndTime.Sub(phase.StartTime).Seconds()
 	phase.Status = "failed"
 	phase.Message = message
-	e.log.Error("❌ Phase failed: " + message)
+	e.log.Error("[FAIL] Phase failed: " + message)
 }
 
 // finalize completes the drill result
@@ -472,9 +472,9 @@ func (e *Engine) finalize(result *DrillResult) {
 	result.Duration = result.EndTime.Sub(result.StartTime).Seconds()
 
 	e.log.Info("")
-	e.log.Info("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+	e.log.Info("=====================================================")
 	e.log.Info("  " + result.Summary())
-	e.log.Info("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+	e.log.Info("=====================================================")
 
 	if result.Success {
 		e.log.Info(fmt.Sprintf("  RTO: %.2fs (target: %.0fs) %s",
@@ -484,9 +484,9 @@ func (e *Engine) finalize(result *DrillResult) {
 
 func boolIcon(b bool) string {
 	if b {
-		return "✅"
+		return "[OK]"
 	}
-	return "❌"
+	return "[FAIL]"
 }
 
 // Cleanup removes drill resources
@@ -498,7 +498,7 @@ func (e *Engine) Cleanup(ctx context.Context, drillID string) error {
 
 	for _, c := range containers {
 		if strings.Contains(c.Name, drillID) || (drillID == "" && strings.HasPrefix(c.Name, "drill_")) {
-			e.log.Info("🗑️  Removing container: " + c.Name)
+			e.log.Info("[DEL]  Removing container: " + c.Name)
 			if err := e.docker.RemoveContainer(ctx, c.ID); err != nil {
 				e.log.Warn("Failed to remove container", "id", c.ID, "error", err)
 			}

internal/encryption/encryption_test.go

@@ -8,7 +8,7 @@ import (
 
 func TestEncryptDecrypt(t *testing.T) {
 	// Test data
-	original := []byte("This is a secret database backup that needs encryption! 🔒")
+	original := []byte("This is a secret database backup that needs encryption! [LOCK]")
 
 	// Test with passphrase
 	t.Run("Passphrase", func(t *testing.T) {
@@ -57,7 +57,7 @@ func TestEncryptDecrypt(t *testing.T) {
 				string(original), string(decrypted))
 		}
 
-		t.Log("✅ Encryption/decryption successful")
+		t.Log("[OK] Encryption/decryption successful")
 	})
 
 	// Test with direct key
@@ -102,7 +102,7 @@ func TestEncryptDecrypt(t *testing.T) {
 			t.Errorf("Decrypted data doesn't match original")
 		}
 
-		t.Log("✅ Direct key encryption/decryption successful")
+		t.Log("[OK] Direct key encryption/decryption successful")
 	})
 
 	// Test wrong password
@@ -133,7 +133,7 @@ func TestEncryptDecrypt(t *testing.T) {
 			t.Error("Expected decryption to fail with wrong password, but it succeeded")
 		}
 
-		t.Logf("✅ Wrong password correctly rejected: %v", err)
+		t.Logf("[OK] Wrong password correctly rejected: %v", err)
 	})
 }
 
@@ -183,7 +183,7 @@ func TestLargeData(t *testing.T) {
 		t.Errorf("Large data decryption failed")
 	}
 
-	t.Log("✅ Large data encryption/decryption successful")
+	t.Log("[OK] Large data encryption/decryption successful")
 }
 
 func TestKeyGeneration(t *testing.T) {
@@ -207,7 +207,7 @@ func TestKeyGeneration(t *testing.T) {
 		t.Error("Generated keys are identical - randomness broken!")
 	}
 
-	t.Log("✅ Key generation successful")
+	t.Log("[OK] Key generation successful")
 }
 
 func TestKeyDerivation(t *testing.T) {
@@ -230,5 +230,5 @@ func TestKeyDerivation(t *testing.T) {
 		t.Error("Different salts produced same key")
 	}
 
-	t.Log("✅ Key derivation successful")
+	t.Log("[OK] Key derivation successful")
 }

internal/engine/clone.go

@@ -339,7 +339,7 @@ func (e *CloneEngine) Backup(ctx context.Context, opts *BackupOptions) (*BackupR
 
 	// Save metadata
 	meta := &metadata.BackupMetadata{
-		Version:      "3.40.0",
+		Version:      "3.42.1",
 		Timestamp:    startTime,
 		Database:     opts.Database,
 		DatabaseType: "mysql",

internal/engine/mysqldump.go

@@ -234,10 +234,26 @@ func (e *MySQLDumpEngine) Backup(ctx context.Context, opts *BackupOptions) (*Bac
 		gzWriter.Close()
 	}
 
-	// Wait for command
-	if err := cmd.Wait(); err != nil {
+	// Wait for command with proper context handling
+	cmdDone := make(chan error, 1)
+	go func() {
+		cmdDone <- cmd.Wait()
+	}()
+
+	var cmdErr error
+	select {
+	case cmdErr = <-cmdDone:
+		// Command completed
+	case <-ctx.Done():
+		e.log.Warn("MySQL backup cancelled - killing process")
+		cmd.Process.Kill()
+		<-cmdDone
+		cmdErr = ctx.Err()
+	}
+
+	if cmdErr != nil {
 		stderr := stderrBuf.String()
-		return nil, fmt.Errorf("mysqldump failed: %w\n%s", err, stderr)
+		return nil, fmt.Errorf("mysqldump failed: %w\n%s", cmdErr, stderr)
 	}
 
 	// Get file info
@@ -254,7 +270,7 @@ func (e *MySQLDumpEngine) Backup(ctx context.Context, opts *BackupOptions) (*Bac
 
 	// Save metadata
 	meta := &metadata.BackupMetadata{
-		Version:      "3.40.0",
+		Version:      "3.42.1",
 		Timestamp:    startTime,
 		Database:     opts.Database,
 		DatabaseType: "mysql",
@@ -442,8 +458,25 @@ func (e *MySQLDumpEngine) BackupToWriter(ctx context.Context, w io.Writer, opts
 		gzWriter.Close()
 	}
 
-	if err := cmd.Wait(); err != nil {
-		return nil, fmt.Errorf("mysqldump failed: %w\n%s", err, stderrBuf.String())
+	// Wait for command with proper context handling
+	cmdDone := make(chan error, 1)
+	go func() {
+		cmdDone <- cmd.Wait()
+	}()
+
+	var cmdErr error
+	select {
+	case cmdErr = <-cmdDone:
+		// Command completed
+	case <-ctx.Done():
+		e.log.Warn("MySQL streaming backup cancelled - killing process")
+		cmd.Process.Kill()
+		<-cmdDone
+		cmdErr = ctx.Err()
+	}
+
+	if cmdErr != nil {
+		return nil, fmt.Errorf("mysqldump failed: %w\n%s", cmdErr, stderrBuf.String())
 	}
 
 	return &BackupResult{

internal/engine/snapshot/btrfs.go

@@ -63,7 +63,7 @@ func (b *BtrfsBackend) Detect(dataDir string) (bool, error) {
 // CreateSnapshot creates a Btrfs snapshot
 func (b *BtrfsBackend) CreateSnapshot(ctx context.Context, opts SnapshotOptions) (*Snapshot, error) {
 	if b.config == nil || b.config.Subvolume == "" {
-		return nil, fmt.Errorf("Btrfs subvolume not configured")
+		return nil, fmt.Errorf("btrfs subvolume not configured")
 	}
 
 	// Generate snapshot name

internal/engine/snapshot_engine.go

@@ -188,6 +188,8 @@ func (e *SnapshotEngine) Backup(ctx context.Context, opts *BackupOptions) (*Back
 	// Step 4: Mount snapshot
 	mountPoint := e.config.MountPoint
 	if mountPoint == "" {
+		// Note: snapshot engine uses snapshot.Config which doesnt have GetEffectiveWorkDir()
+		// TODO: Refactor to use main config.Config for WorkDir support
 		mountPoint = filepath.Join(os.TempDir(), fmt.Sprintf("dbbackup_snap_%s", timestamp))
 	}
 
@@ -223,7 +225,7 @@ func (e *SnapshotEngine) Backup(ctx context.Context, opts *BackupOptions) (*Back
 
 	// Save metadata
 	meta := &metadata.BackupMetadata{
-		Version:      "3.40.0",
+		Version:      "3.42.1",
 		Timestamp:    startTime,
 		Database:     opts.Database,
 		DatabaseType: "mysql",

internal/fs/fs.go

@@ -0,0 +1,223 @@
+// Package fs provides filesystem abstraction using spf13/afero for testability.
+// It allows swapping the real filesystem with an in-memory mock for unit tests.
+package fs
+
+import (
+	"io"
+	"os"
+	"path/filepath"
+	"time"
+
+	"github.com/spf13/afero"
+)
+
+// FS is the global filesystem interface used throughout the application.
+// By default, it uses the real OS filesystem.
+// For testing, use SetFS(afero.NewMemMapFs()) to use an in-memory filesystem.
+var FS afero.Fs = afero.NewOsFs()
+
+// SetFS sets the global filesystem (useful for testing)
+func SetFS(fs afero.Fs) {
+	FS = fs
+}
+
+// ResetFS resets to the real OS filesystem
+func ResetFS() {
+	FS = afero.NewOsFs()
+}
+
+// NewMemMapFs creates a new in-memory filesystem for testing
+func NewMemMapFs() afero.Fs {
+	return afero.NewMemMapFs()
+}
+
+// NewReadOnlyFs wraps a filesystem to make it read-only
+func NewReadOnlyFs(base afero.Fs) afero.Fs {
+	return afero.NewReadOnlyFs(base)
+}
+
+// NewBasePathFs creates a filesystem rooted at a specific path
+func NewBasePathFs(base afero.Fs, path string) afero.Fs {
+	return afero.NewBasePathFs(base, path)
+}
+
+// --- File Operations (use global FS) ---
+
+// Create creates a file
+func Create(name string) (afero.File, error) {
+	return FS.Create(name)
+}
+
+// Open opens a file for reading
+func Open(name string) (afero.File, error) {
+	return FS.Open(name)
+}
+
+// OpenFile opens a file with specified flags and permissions
+func OpenFile(name string, flag int, perm os.FileMode) (afero.File, error) {
+	return FS.OpenFile(name, flag, perm)
+}
+
+// Remove removes a file or empty directory
+func Remove(name string) error {
+	return FS.Remove(name)
+}
+
+// RemoveAll removes a path and any children it contains
+func RemoveAll(path string) error {
+	return FS.RemoveAll(path)
+}
+
+// Rename renames (moves) a file
+func Rename(oldname, newname string) error {
+	return FS.Rename(oldname, newname)
+}
+
+// Stat returns file info
+func Stat(name string) (os.FileInfo, error) {
+	return FS.Stat(name)
+}
+
+// Chmod changes file mode
+func Chmod(name string, mode os.FileMode) error {
+	return FS.Chmod(name, mode)
+}
+
+// Chown changes file ownership (may not work on all filesystems)
+func Chown(name string, uid, gid int) error {
+	return FS.Chown(name, uid, gid)
+}
+
+// Chtimes changes file access and modification times
+func Chtimes(name string, atime, mtime time.Time) error {
+	return FS.Chtimes(name, atime, mtime)
+}
+
+// --- Directory Operations ---
+
+// Mkdir creates a directory
+func Mkdir(name string, perm os.FileMode) error {
+	return FS.Mkdir(name, perm)
+}
+
+// MkdirAll creates a directory and all parents
+func MkdirAll(path string, perm os.FileMode) error {
+	return FS.MkdirAll(path, perm)
+}
+
+// ReadDir reads a directory
+func ReadDir(dirname string) ([]os.FileInfo, error) {
+	return afero.ReadDir(FS, dirname)
+}
+
+// --- File Content Operations ---
+
+// ReadFile reads an entire file
+func ReadFile(filename string) ([]byte, error) {
+	return afero.ReadFile(FS, filename)
+}
+
+// WriteFile writes data to a file
+func WriteFile(filename string, data []byte, perm os.FileMode) error {
+	return afero.WriteFile(FS, filename, data, perm)
+}
+
+// --- Existence Checks ---
+
+// Exists checks if a file or directory exists
+func Exists(path string) (bool, error) {
+	return afero.Exists(FS, path)
+}
+
+// DirExists checks if a directory exists
+func DirExists(path string) (bool, error) {
+	return afero.DirExists(FS, path)
+}
+
+// IsDir checks if path is a directory
+func IsDir(path string) (bool, error) {
+	return afero.IsDir(FS, path)
+}
+
+// IsEmpty checks if a directory is empty
+func IsEmpty(path string) (bool, error) {
+	return afero.IsEmpty(FS, path)
+}
+
+// --- Utility Functions ---
+
+// Walk walks a directory tree
+func Walk(root string, walkFn filepath.WalkFunc) error {
+	return afero.Walk(FS, root, walkFn)
+}
+
+// Glob returns the names of all files matching pattern
+func Glob(pattern string) ([]string, error) {
+	return afero.Glob(FS, pattern)
+}
+
+// TempDir creates a temporary directory
+func TempDir(dir, prefix string) (string, error) {
+	return afero.TempDir(FS, dir, prefix)
+}
+
+// TempFile creates a temporary file
+func TempFile(dir, pattern string) (afero.File, error) {
+	return afero.TempFile(FS, dir, pattern)
+}
+
+// CopyFile copies a file from src to dst
+func CopyFile(src, dst string) error {
+	srcFile, err := FS.Open(src)
+	if err != nil {
+		return err
+	}
+	defer srcFile.Close()
+
+	srcInfo, err := srcFile.Stat()
+	if err != nil {
+		return err
+	}
+
+	dstFile, err := FS.OpenFile(dst, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, srcInfo.Mode())
+	if err != nil {
+		return err
+	}
+	defer dstFile.Close()
+
+	_, err = io.Copy(dstFile, srcFile)
+	return err
+}
+
+// FileSize returns the size of a file
+func FileSize(path string) (int64, error) {
+	info, err := FS.Stat(path)
+	if err != nil {
+		return 0, err
+	}
+	return info.Size(), nil
+}
+
+// --- Testing Helpers ---
+
+// WithMemFs executes a function with an in-memory filesystem, then restores the original
+func WithMemFs(fn func(fs afero.Fs)) {
+	original := FS
+	memFs := afero.NewMemMapFs()
+	FS = memFs
+	defer func() { FS = original }()
+	fn(memFs)
+}
+
+// SetupTestDir creates a test directory structure in-memory
+func SetupTestDir(files map[string]string) afero.Fs {
+	memFs := afero.NewMemMapFs()
+	for path, content := range files {
+		dir := filepath.Dir(path)
+		if dir != "." && dir != "/" {
+			_ = memFs.MkdirAll(dir, 0755)
+		}
+		_ = afero.WriteFile(memFs, path, []byte(content), 0644)
+	}
+	return memFs
+}

internal/fs/fs_test.go

@@ -0,0 +1,191 @@
+package fs
+
+import (
+	"os"
+	"testing"
+
+	"github.com/spf13/afero"
+)
+
+func TestMemMapFs(t *testing.T) {
+	// Use in-memory filesystem for testing
+	WithMemFs(func(memFs afero.Fs) {
+		// Create a file
+		err := WriteFile("/test/file.txt", []byte("hello world"), 0644)
+		if err != nil {
+			t.Fatalf("WriteFile failed: %v", err)
+		}
+
+		// Read it back
+		content, err := ReadFile("/test/file.txt")
+		if err != nil {
+			t.Fatalf("ReadFile failed: %v", err)
+		}
+
+		if string(content) != "hello world" {
+			t.Errorf("expected 'hello world', got '%s'", string(content))
+		}
+
+		// Check existence
+		exists, err := Exists("/test/file.txt")
+		if err != nil {
+			t.Fatalf("Exists failed: %v", err)
+		}
+		if !exists {
+			t.Error("file should exist")
+		}
+
+		// Check non-existent file
+		exists, err = Exists("/nonexistent.txt")
+		if err != nil {
+			t.Fatalf("Exists failed: %v", err)
+		}
+		if exists {
+			t.Error("file should not exist")
+		}
+	})
+}
+
+func TestSetupTestDir(t *testing.T) {
+	// Create test directory structure
+	testFs := SetupTestDir(map[string]string{
+		"/backups/db1.dump":     "database 1 content",
+		"/backups/db2.dump":     "database 2 content",
+		"/config/settings.json": `{"key": "value"}`,
+	})
+
+	// Verify files exist
+	content, err := afero.ReadFile(testFs, "/backups/db1.dump")
+	if err != nil {
+		t.Fatalf("ReadFile failed: %v", err)
+	}
+	if string(content) != "database 1 content" {
+		t.Errorf("unexpected content: %s", string(content))
+	}
+
+	// Verify directory structure
+	files, err := afero.ReadDir(testFs, "/backups")
+	if err != nil {
+		t.Fatalf("ReadDir failed: %v", err)
+	}
+	if len(files) != 2 {
+		t.Errorf("expected 2 files, got %d", len(files))
+	}
+}
+
+func TestCopyFile(t *testing.T) {
+	WithMemFs(func(memFs afero.Fs) {
+		// Create source file
+		err := WriteFile("/source.txt", []byte("copy me"), 0644)
+		if err != nil {
+			t.Fatalf("WriteFile failed: %v", err)
+		}
+
+		// Copy file
+		err = CopyFile("/source.txt", "/dest.txt")
+		if err != nil {
+			t.Fatalf("CopyFile failed: %v", err)
+		}
+
+		// Verify copy
+		content, err := ReadFile("/dest.txt")
+		if err != nil {
+			t.Fatalf("ReadFile failed: %v", err)
+		}
+		if string(content) != "copy me" {
+			t.Errorf("unexpected content: %s", string(content))
+		}
+	})
+}
+
+func TestFileSize(t *testing.T) {
+	WithMemFs(func(memFs afero.Fs) {
+		data := []byte("12345678901234567890") // 20 bytes
+		err := WriteFile("/sized.txt", data, 0644)
+		if err != nil {
+			t.Fatalf("WriteFile failed: %v", err)
+		}
+
+		size, err := FileSize("/sized.txt")
+		if err != nil {
+			t.Fatalf("FileSize failed: %v", err)
+		}
+		if size != 20 {
+			t.Errorf("expected size 20, got %d", size)
+		}
+	})
+}
+
+func TestTempDir(t *testing.T) {
+	WithMemFs(func(memFs afero.Fs) {
+		// Create temp dir
+		dir, err := TempDir("", "test-")
+		if err != nil {
+			t.Fatalf("TempDir failed: %v", err)
+		}
+
+		// Verify it exists
+		isDir, err := IsDir(dir)
+		if err != nil {
+			t.Fatalf("IsDir failed: %v", err)
+		}
+		if !isDir {
+			t.Error("temp dir should be a directory")
+		}
+
+		// Verify it's empty
+		isEmpty, err := IsEmpty(dir)
+		if err != nil {
+			t.Fatalf("IsEmpty failed: %v", err)
+		}
+		if !isEmpty {
+			t.Error("temp dir should be empty")
+		}
+	})
+}
+
+func TestWalk(t *testing.T) {
+	WithMemFs(func(memFs afero.Fs) {
+		// Create directory structure
+		_ = MkdirAll("/root/a/b", 0755)
+		_ = WriteFile("/root/file1.txt", []byte("1"), 0644)
+		_ = WriteFile("/root/a/file2.txt", []byte("2"), 0644)
+		_ = WriteFile("/root/a/b/file3.txt", []byte("3"), 0644)
+
+		var files []string
+		err := Walk("/root", func(path string, info os.FileInfo, err error) error {
+			if err != nil {
+				return err
+			}
+			if !info.IsDir() {
+				files = append(files, path)
+			}
+			return nil
+		})
+
+		if err != nil {
+			t.Fatalf("Walk failed: %v", err)
+		}
+
+		if len(files) != 3 {
+			t.Errorf("expected 3 files, got %d: %v", len(files), files)
+		}
+	})
+}
+
+func TestGlob(t *testing.T) {
+	WithMemFs(func(memFs afero.Fs) {
+		_ = WriteFile("/data/backup1.dump", []byte("1"), 0644)
+		_ = WriteFile("/data/backup2.dump", []byte("2"), 0644)
+		_ = WriteFile("/data/config.json", []byte("{}"), 0644)
+
+		matches, err := Glob("/data/*.dump")
+		if err != nil {
+			t.Fatalf("Glob failed: %v", err)
+		}
+
+		if len(matches) != 2 {
+			t.Errorf("expected 2 matches, got %d: %v", len(matches), matches)
+		}
+	})
+}

internal/installer/installer.go

@@ -53,16 +53,16 @@ type InstallOptions struct {
 
 // ServiceStatus contains information about installed services
 type ServiceStatus struct {
-	Installed     bool
-	Enabled       bool
-	Active        bool
-	TimerEnabled  bool
-	TimerActive   bool
-	LastRun       string
-	NextRun       string
-	ServicePath   string
-	TimerPath     string
-	ExporterPath  string
+	Installed    bool
+	Enabled      bool
+	Active       bool
+	TimerEnabled bool
+	TimerActive  bool
+	LastRun      string
+	NextRun      string
+	ServicePath  string
+	TimerPath    string
+	ExporterPath string
 }
 
 // NewInstaller creates a new Installer
@@ -188,7 +188,7 @@ func (i *Installer) Uninstall(ctx context.Context, instance string, purge bool)
 	if instance != "cluster" && instance != "" {
 		templateService := filepath.Join(i.unitDir, "dbbackup@.service")
 		templateTimer := filepath.Join(i.unitDir, "dbbackup@.timer")
-		
+
 		// Only remove templates if no other instances are using them
 		if i.canRemoveTemplates() {
 			if !i.dryRun {
@@ -644,11 +644,11 @@ func (i *Installer) canRemoveTemplates() bool {
 	// Check if any dbbackup@*.service instances exist
 	pattern := filepath.Join(i.unitDir, "dbbackup@*.service")
 	matches, _ := filepath.Glob(pattern)
-	
+
 	// Also check for running instances
 	cmd := exec.Command("systemctl", "list-units", "--type=service", "--all", "dbbackup@*")
 	output, _ := cmd.Output()
-	
+
 	return len(matches) == 0 && !strings.Contains(string(output), "dbbackup@")
 }
 
@@ -658,9 +658,9 @@ func (i *Installer) printNextSteps(opts InstallOptions) {
 	serviceName := strings.Replace(timerName, ".timer", ".service", 1)
 
 	fmt.Println()
-	fmt.Println("✅ Installation successful!")
+	fmt.Println("[OK] Installation successful!")
 	fmt.Println()
-	fmt.Println("📋 Next steps:")
+	fmt.Println("[NEXT] Next steps:")
 	fmt.Println()
 	fmt.Printf("  1. Edit configuration:     sudo nano %s\n", opts.ConfigPath)
 	fmt.Printf("  2. Set credentials:        sudo nano /etc/dbbackup/env.d/%s.conf\n", opts.Instance)
@@ -668,12 +668,12 @@ func (i *Installer) printNextSteps(opts InstallOptions) {
 	fmt.Printf("  4. Verify timer status:    sudo systemctl status %s\n", timerName)
 	fmt.Printf("  5. Run backup manually:    sudo systemctl start %s\n", serviceName)
 	fmt.Println()
-	fmt.Println("📊 View backup logs:")
+	fmt.Println("[LOGS] View backup logs:")
 	fmt.Printf("  journalctl -u %s -f\n", serviceName)
 	fmt.Println()
 
 	if opts.WithMetrics {
-		fmt.Println("📈 Prometheus metrics:")
+		fmt.Println("[METRICS] Prometheus metrics:")
 		fmt.Printf("  curl http://localhost:%d/metrics\n", opts.MetricsPort)
 		fmt.Println()
 	}

internal/installer/templates/dbbackup-cluster.service

@@ -33,8 +33,11 @@ RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6
 # Environment
 EnvironmentFile=-/etc/dbbackup/env.d/cluster.conf
 
+# Working directory (config is loaded from .dbbackup.conf here)
+WorkingDirectory=/var/lib/dbbackup
+
 # Execution - cluster backup (all databases)
-ExecStart={{.BinaryPath}} backup cluster --config {{.ConfigPath}}
+ExecStart={{.BinaryPath}} backup cluster --backup-dir {{.BackupDir}}
 TimeoutStartSec={{.TimeoutSeconds}}
 
 # Post-backup metrics export

internal/installer/templates/dbbackup@.service

@@ -33,8 +33,11 @@ RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6
 # Environment
 EnvironmentFile=-/etc/dbbackup/env.d/%i.conf
 
+# Working directory (config is loaded from .dbbackup.conf here)
+WorkingDirectory=/var/lib/dbbackup
+
 # Execution
-ExecStart={{.BinaryPath}} backup {{.BackupType}} %i --config {{.ConfigPath}}
+ExecStart={{.BinaryPath}} backup {{.BackupType}} %i --backup-dir {{.BackupDir}}
 TimeoutStartSec={{.TimeoutSeconds}}
 
 # Post-backup metrics export

internal/logger/colors.go

@@ -0,0 +1,118 @@
+package logger
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/fatih/color"
+)
+
+// CLI output helpers using fatih/color for cross-platform support
+
+// Success prints a success message with green checkmark
+func Success(format string, args ...interface{}) {
+	msg := fmt.Sprintf(format, args...)
+	SuccessColor.Fprint(os.Stdout, "✓ ")
+	fmt.Println(msg)
+}
+
+// Error prints an error message with red X
+func Error(format string, args ...interface{}) {
+	msg := fmt.Sprintf(format, args...)
+	ErrorColor.Fprint(os.Stderr, "✗ ")
+	fmt.Fprintln(os.Stderr, msg)
+}
+
+// Warning prints a warning message with yellow exclamation
+func Warning(format string, args ...interface{}) {
+	msg := fmt.Sprintf(format, args...)
+	WarnColor.Fprint(os.Stdout, "⚠ ")
+	fmt.Println(msg)
+}
+
+// Info prints an info message with blue arrow
+func Info(format string, args ...interface{}) {
+	msg := fmt.Sprintf(format, args...)
+	InfoColor.Fprint(os.Stdout, "→ ")
+	fmt.Println(msg)
+}
+
+// Header prints a bold header
+func Header(format string, args ...interface{}) {
+	msg := fmt.Sprintf(format, args...)
+	HighlightColor.Println(msg)
+}
+
+// Dim prints dimmed/secondary text
+func Dim(format string, args ...interface{}) {
+	msg := fmt.Sprintf(format, args...)
+	DimColor.Println(msg)
+}
+
+// Bold returns bold text
+func Bold(text string) string {
+	return color.New(color.Bold).Sprint(text)
+}
+
+// Green returns green text
+func Green(text string) string {
+	return SuccessColor.Sprint(text)
+}
+
+// Red returns red text
+func Red(text string) string {
+	return ErrorColor.Sprint(text)
+}
+
+// Yellow returns yellow text
+func Yellow(text string) string {
+	return WarnColor.Sprint(text)
+}
+
+// Cyan returns cyan text
+func Cyan(text string) string {
+	return InfoColor.Sprint(text)
+}
+
+// StatusLine prints a key-value status line
+func StatusLine(key, value string) {
+	DimColor.Printf("  %s: ", key)
+	fmt.Println(value)
+}
+
+// ProgressStatus prints operation status with timing
+func ProgressStatus(operation string, status string, isSuccess bool) {
+	if isSuccess {
+		SuccessColor.Print("[OK] ")
+	} else {
+		ErrorColor.Print("[FAIL] ")
+	}
+	fmt.Printf("%s: %s\n", operation, status)
+}
+
+// Table prints a simple formatted table row
+func TableRow(cols ...string) {
+	for i, col := range cols {
+		if i == 0 {
+			InfoColor.Printf("%-20s", col)
+		} else {
+			fmt.Printf("%-15s", col)
+		}
+	}
+	fmt.Println()
+}
+
+// DisableColors disables all color output (for non-TTY or --no-color flag)
+func DisableColors() {
+	color.NoColor = true
+}
+
+// EnableColors enables color output
+func EnableColors() {
+	color.NoColor = false
+}
+
+// IsColorEnabled returns whether colors are enabled
+func IsColorEnabled() bool {
+	return !color.NoColor
+}

internal/logger/logger.go

@@ -7,9 +7,29 @@ import (
 	"strings"
 	"time"
 
+	"github.com/fatih/color"
 	"github.com/sirupsen/logrus"
 )
 
+// Color printers for consistent output across the application
+var (
+	// Status colors
+	SuccessColor = color.New(color.FgGreen, color.Bold)
+	ErrorColor   = color.New(color.FgRed, color.Bold)
+	WarnColor    = color.New(color.FgYellow, color.Bold)
+	InfoColor    = color.New(color.FgCyan)
+	DebugColor   = color.New(color.FgWhite)
+
+	// Highlight colors
+	HighlightColor = color.New(color.FgMagenta, color.Bold)
+	DimColor       = color.New(color.FgHiBlack)
+
+	// Data colors
+	NumberColor = color.New(color.FgYellow)
+	PathColor   = color.New(color.FgBlue, color.Underline)
+	TimeColor   = color.New(color.FgCyan)
+)
+
 // Logger defines the interface for logging
 type Logger interface {
 	Debug(msg string, args ...any)
@@ -226,34 +246,32 @@ type CleanFormatter struct{}
 func (f *CleanFormatter) Format(entry *logrus.Entry) ([]byte, error) {
 	timestamp := entry.Time.Format("2006-01-02T15:04:05")
 
-	// Color codes for different log levels
-	var levelColor, levelText string
+	// Get level color and text using fatih/color
+	var levelPrinter *color.Color
+	var levelText string
 	switch entry.Level {
 	case logrus.DebugLevel:
-		levelColor = "\033[36m" // Cyan
+		levelPrinter = DebugColor
 		levelText = "DEBUG"
 	case logrus.InfoLevel:
-		levelColor = "\033[32m" // Green
+		levelPrinter = SuccessColor
 		levelText = "INFO "
 	case logrus.WarnLevel:
-		levelColor = "\033[33m" // Yellow
+		levelPrinter = WarnColor
 		levelText = "WARN "
 	case logrus.ErrorLevel:
-		levelColor = "\033[31m" // Red
+		levelPrinter = ErrorColor
 		levelText = "ERROR"
 	default:
-		levelColor = "\033[0m" // Reset
+		levelPrinter = InfoColor
 		levelText = "INFO "
 	}
-	resetColor := "\033[0m"
 
 	// Build the message with perfectly aligned columns
 	var output strings.Builder
 
 	// Column 1: Level (with color, fixed width 5 chars)
-	output.WriteString(levelColor)
-	output.WriteString(levelText)
-	output.WriteString(resetColor)
+	output.WriteString(levelPrinter.Sprint(levelText))
 	output.WriteString(" ")
 
 	// Column 2: Timestamp (fixed format)

internal/migrate/engine.go

@@ -117,7 +117,7 @@ func NewEngine(sourceCfg, targetCfg *config.Config, log logger.Logger) (*Engine,
 		targetDB:    targetDB,
 		log:         log,
 		progress:    progress.NewSpinner(),
-		workDir:     os.TempDir(),
+		workDir:     sourceCfg.GetEffectiveWorkDir(),
 		keepBackup:  false,
 		jobs:        4,
 		dryRun:      false,

internal/notify/batch.go

@@ -202,9 +202,9 @@ func (b *Batcher) formatSummaryDigest(events []*Event, success, failure, dbCount
 
 func (b *Batcher) formatCompactDigest(events []*Event, success, failure int) string {
 	if failure > 0 {
-		return fmt.Sprintf("⚠️ %d/%d operations failed", failure, len(events))
+		return fmt.Sprintf("[WARN] %d/%d operations failed", failure, len(events))
 	}
-	return fmt.Sprintf("✅ All %d operations successful", success)
+	return fmt.Sprintf("[OK] All %d operations successful", success)
 }
 
 func (b *Batcher) formatDetailedDigest(events []*Event) string {
@@ -215,9 +215,9 @@ func (b *Batcher) formatDetailedDigest(events []*Event) string {
 		icon := "•"
 		switch e.Severity {
 		case SeverityError, SeverityCritical:
-			icon = "❌"
+			icon = "[FAIL]"
 		case SeverityWarning:
-			icon = "⚠️"
+			icon = "[WARN]"
 		}
 
 		msg += fmt.Sprintf("%s [%s] %s: %s\n",

internal/notify/notify.go

@@ -183,43 +183,43 @@ func DefaultConfig() Config {
 
 // FormatEventSubject generates a subject line for notifications
 func FormatEventSubject(event *Event) string {
-	icon := "ℹ️"
+	icon := "[INFO]"
 	switch event.Severity {
 	case SeverityWarning:
-		icon = "⚠️"
+		icon = "[WARN]"
 	case SeverityError, SeverityCritical:
-		icon = "❌"
+		icon = "[FAIL]"
 	}
 
 	verb := "Event"
 	switch event.Type {
 	case EventBackupStarted:
 		verb = "Backup Started"
-		icon = "🔄"
+		icon = "[EXEC]"
 	case EventBackupCompleted:
 		verb = "Backup Completed"
-		icon = "✅"
+		icon = "[OK]"
 	case EventBackupFailed:
 		verb = "Backup Failed"
-		icon = "❌"
+		icon = "[FAIL]"
 	case EventRestoreStarted:
 		verb = "Restore Started"
-		icon = "🔄"
+		icon = "[EXEC]"
 	case EventRestoreCompleted:
 		verb = "Restore Completed"
-		icon = "✅"
+		icon = "[OK]"
 	case EventRestoreFailed:
 		verb = "Restore Failed"
-		icon = "❌"
+		icon = "[FAIL]"
 	case EventCleanupCompleted:
 		verb = "Cleanup Completed"
-		icon = "🗑️"
+		icon = "[DEL]"
 	case EventVerifyCompleted:
 		verb = "Verification Passed"
-		icon = "✅"
+		icon = "[OK]"
 	case EventVerifyFailed:
 		verb = "Verification Failed"
-		icon = "❌"
+		icon = "[FAIL]"
 	case EventPITRRecovery:
 		verb = "PITR Recovery"
 		icon = "⏪"

internal/notify/templates.go

@@ -30,52 +30,52 @@ type Templates struct {
 func DefaultTemplates() map[EventType]Templates {
 	return map[EventType]Templates{
 		EventBackupStarted: {
-			Subject:  "🔄 Backup Started: {{.Database}} on {{.Hostname}}",
+			Subject:  "[EXEC] Backup Started: {{.Database}} on {{.Hostname}}",
 			TextBody: backupStartedText,
 			HTMLBody: backupStartedHTML,
 		},
 		EventBackupCompleted: {
-			Subject:  "✅ Backup Completed: {{.Database}} on {{.Hostname}}",
+			Subject:  "[OK] Backup Completed: {{.Database}} on {{.Hostname}}",
 			TextBody: backupCompletedText,
 			HTMLBody: backupCompletedHTML,
 		},
 		EventBackupFailed: {
-			Subject:  "❌ Backup FAILED: {{.Database}} on {{.Hostname}}",
+			Subject:  "[FAIL] Backup FAILED: {{.Database}} on {{.Hostname}}",
 			TextBody: backupFailedText,
 			HTMLBody: backupFailedHTML,
 		},
 		EventRestoreStarted: {
-			Subject:  "🔄 Restore Started: {{.Database}} on {{.Hostname}}",
+			Subject:  "[EXEC] Restore Started: {{.Database}} on {{.Hostname}}",
 			TextBody: restoreStartedText,
 			HTMLBody: restoreStartedHTML,
 		},
 		EventRestoreCompleted: {
-			Subject:  "✅ Restore Completed: {{.Database}} on {{.Hostname}}",
+			Subject:  "[OK] Restore Completed: {{.Database}} on {{.Hostname}}",
 			TextBody: restoreCompletedText,
 			HTMLBody: restoreCompletedHTML,
 		},
 		EventRestoreFailed: {
-			Subject:  "❌ Restore FAILED: {{.Database}} on {{.Hostname}}",
+			Subject:  "[FAIL] Restore FAILED: {{.Database}} on {{.Hostname}}",
 			TextBody: restoreFailedText,
 			HTMLBody: restoreFailedHTML,
 		},
 		EventVerificationPassed: {
-			Subject:  "✅ Verification Passed: {{.Database}}",
+			Subject:  "[OK] Verification Passed: {{.Database}}",
 			TextBody: verificationPassedText,
 			HTMLBody: verificationPassedHTML,
 		},
 		EventVerificationFailed: {
-			Subject:  "❌ Verification FAILED: {{.Database}}",
+			Subject:  "[FAIL] Verification FAILED: {{.Database}}",
 			TextBody: verificationFailedText,
 			HTMLBody: verificationFailedHTML,
 		},
 		EventDRDrillPassed: {
-			Subject:  "✅ DR Drill Passed: {{.Database}}",
+			Subject:  "[OK] DR Drill Passed: {{.Database}}",
 			TextBody: drDrillPassedText,
 			HTMLBody: drDrillPassedHTML,
 		},
 		EventDRDrillFailed: {
-			Subject:  "❌ DR Drill FAILED: {{.Database}}",
+			Subject:  "[FAIL] DR Drill FAILED: {{.Database}}",
 			TextBody: drDrillFailedText,
 			HTMLBody: drDrillFailedHTML,
 		},
@@ -95,7 +95,7 @@ Started At: {{formatTime .Timestamp}}
 
 const backupStartedHTML = `
 <div style="font-family: Arial, sans-serif; padding: 20px;">
-  <h2 style="color: #3498db;">🔄 Backup Started</h2>
+  <h2 style="color: #3498db;">[EXEC] Backup Started</h2>
   <table style="border-collapse: collapse; width: 100%; max-width: 600px;">
     <tr><td style="padding: 8px; font-weight: bold;">Database:</td><td style="padding: 8px;">{{.Database}}</td></tr>
     <tr><td style="padding: 8px; font-weight: bold;">Hostname:</td><td style="padding: 8px;">{{.Hostname}}</td></tr>
@@ -121,7 +121,7 @@ Completed:  {{formatTime .Timestamp}}
 
 const backupCompletedHTML = `
 <div style="font-family: Arial, sans-serif; padding: 20px;">
-  <h2 style="color: #27ae60;">✅ Backup Completed</h2>
+  <h2 style="color: #27ae60;">[OK] Backup Completed</h2>
   <table style="border-collapse: collapse; width: 100%; max-width: 600px;">
     <tr><td style="padding: 8px; font-weight: bold;">Database:</td><td style="padding: 8px;">{{.Database}}</td></tr>
     <tr><td style="padding: 8px; font-weight: bold;">Hostname:</td><td style="padding: 8px;">{{.Hostname}}</td></tr>
@@ -137,7 +137,7 @@ const backupCompletedHTML = `
 `
 
 const backupFailedText = `
-⚠️ BACKUP FAILED ⚠️
+[WARN] BACKUP FAILED [WARN]
 
 Database:   {{.Database}}
 Hostname:   {{.Hostname}}
@@ -152,7 +152,7 @@ Please investigate immediately.
 
 const backupFailedHTML = `
 <div style="font-family: Arial, sans-serif; padding: 20px;">
-  <h2 style="color: #e74c3c;">❌ Backup FAILED</h2>
+  <h2 style="color: #e74c3c;">[FAIL] Backup FAILED</h2>
   <table style="border-collapse: collapse; width: 100%; max-width: 600px;">
     <tr><td style="padding: 8px; font-weight: bold;">Database:</td><td style="padding: 8px;">{{.Database}}</td></tr>
     <tr><td style="padding: 8px; font-weight: bold;">Hostname:</td><td style="padding: 8px;">{{.Hostname}}</td></tr>
@@ -176,7 +176,7 @@ Started At: {{formatTime .Timestamp}}
 
 const restoreStartedHTML = `
 <div style="font-family: Arial, sans-serif; padding: 20px;">
-  <h2 style="color: #3498db;">🔄 Restore Started</h2>
+  <h2 style="color: #3498db;">[EXEC] Restore Started</h2>
   <table style="border-collapse: collapse; width: 100%; max-width: 600px;">
     <tr><td style="padding: 8px; font-weight: bold;">Database:</td><td style="padding: 8px;">{{.Database}}</td></tr>
     <tr><td style="padding: 8px; font-weight: bold;">Hostname:</td><td style="padding: 8px;">{{.Hostname}}</td></tr>
@@ -200,7 +200,7 @@ Completed:  {{formatTime .Timestamp}}
 
 const restoreCompletedHTML = `
 <div style="font-family: Arial, sans-serif; padding: 20px;">
-  <h2 style="color: #27ae60;">✅ Restore Completed</h2>
+  <h2 style="color: #27ae60;">[OK] Restore Completed</h2>
   <table style="border-collapse: collapse; width: 100%; max-width: 600px;">
     <tr><td style="padding: 8px; font-weight: bold;">Database:</td><td style="padding: 8px;">{{.Database}}</td></tr>
     <tr><td style="padding: 8px; font-weight: bold;">Hostname:</td><td style="padding: 8px;">{{.Hostname}}</td></tr>
@@ -214,7 +214,7 @@ const restoreCompletedHTML = `
 `
 
 const restoreFailedText = `
-⚠️ RESTORE FAILED ⚠️
+[WARN] RESTORE FAILED [WARN]
 
 Database:   {{.Database}}
 Hostname:   {{.Hostname}}
@@ -229,7 +229,7 @@ Please investigate immediately.
 
 const restoreFailedHTML = `
 <div style="font-family: Arial, sans-serif; padding: 20px;">
-  <h2 style="color: #e74c3c;">❌ Restore FAILED</h2>
+  <h2 style="color: #e74c3c;">[FAIL] Restore FAILED</h2>
   <table style="border-collapse: collapse; width: 100%; max-width: 600px;">
     <tr><td style="padding: 8px; font-weight: bold;">Database:</td><td style="padding: 8px;">{{.Database}}</td></tr>
     <tr><td style="padding: 8px; font-weight: bold;">Hostname:</td><td style="padding: 8px;">{{.Hostname}}</td></tr>
@@ -255,7 +255,7 @@ Verified:   {{formatTime .Timestamp}}
 
 const verificationPassedHTML = `
 <div style="font-family: Arial, sans-serif; padding: 20px;">
-  <h2 style="color: #27ae60;">✅ Verification Passed</h2>
+  <h2 style="color: #27ae60;">[OK] Verification Passed</h2>
   <table style="border-collapse: collapse; width: 100%; max-width: 600px;">
     <tr><td style="padding: 8px; font-weight: bold;">Database:</td><td style="padding: 8px;">{{.Database}}</td></tr>
     <tr><td style="padding: 8px; font-weight: bold;">Hostname:</td><td style="padding: 8px;">{{.Hostname}}</td></tr>
@@ -269,7 +269,7 @@ const verificationPassedHTML = `
 `
 
 const verificationFailedText = `
-⚠️ VERIFICATION FAILED ⚠️
+[WARN] VERIFICATION FAILED [WARN]
 
 Database:   {{.Database}}
 Hostname:   {{.Hostname}}
@@ -284,7 +284,7 @@ Backup integrity may be compromised. Please investigate.
 
 const verificationFailedHTML = `
 <div style="font-family: Arial, sans-serif; padding: 20px;">
-  <h2 style="color: #e74c3c;">❌ Verification FAILED</h2>
+  <h2 style="color: #e74c3c;">[FAIL] Verification FAILED</h2>
   <table style="border-collapse: collapse; width: 100%; max-width: 600px;">
     <tr><td style="padding: 8px; font-weight: bold;">Database:</td><td style="padding: 8px;">{{.Database}}</td></tr>
     <tr><td style="padding: 8px; font-weight: bold;">Hostname:</td><td style="padding: 8px;">{{.Hostname}}</td></tr>
@@ -314,7 +314,7 @@ Backup restore capability verified.
 
 const drDrillPassedHTML = `
 <div style="font-family: Arial, sans-serif; padding: 20px;">
-  <h2 style="color: #27ae60;">✅ DR Drill Passed</h2>
+  <h2 style="color: #27ae60;">[OK] DR Drill Passed</h2>
   <table style="border-collapse: collapse; width: 100%; max-width: 600px;">
     <tr><td style="padding: 8px; font-weight: bold;">Database:</td><td style="padding: 8px;">{{.Database}}</td></tr>
     <tr><td style="padding: 8px; font-weight: bold;">Hostname:</td><td style="padding: 8px;">{{.Hostname}}</td></tr>
@@ -326,12 +326,12 @@ const drDrillPassedHTML = `
     {{end}}
   </table>
   {{if .Message}}<p style="margin-top: 20px; color: #27ae60;">{{.Message}}</p>{{end}}
-  <p style="margin-top: 20px; color: #27ae60;">✓ Backup restore capability verified</p>
+  <p style="margin-top: 20px; color: #27ae60;">[OK] Backup restore capability verified</p>
 </div>
 `
 
 const drDrillFailedText = `
-⚠️ DR DRILL FAILED ⚠️
+[WARN] DR DRILL FAILED [WARN]
 
 Database:   {{.Database}}
 Hostname:   {{.Hostname}}
@@ -346,7 +346,7 @@ Backup may not be restorable. Please investigate immediately.
 
 const drDrillFailedHTML = `
 <div style="font-family: Arial, sans-serif; padding: 20px;">
-  <h2 style="color: #e74c3c;">❌ DR Drill FAILED</h2>
+  <h2 style="color: #e74c3c;">[FAIL] DR Drill FAILED</h2>
   <table style="border-collapse: collapse; width: 100%; max-width: 600px;">
     <tr><td style="padding: 8px; font-weight: bold;">Database:</td><td style="padding: 8px;">{{.Database}}</td></tr>
     <tr><td style="padding: 8px; font-weight: bold;">Hostname:</td><td style="padding: 8px;">{{.Hostname}}</td></tr>

internal/pitr/binlog.go

@@ -212,7 +212,11 @@ func (m *BinlogManager) detectTools() error {
 
 // detectServerType determines if we're working with MySQL or MariaDB
 func (m *BinlogManager) detectServerType() DatabaseType {
-	cmd := exec.Command(m.mysqlbinlogPath, "--version")
+	// Use timeout to prevent blocking if command hangs
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	cmd := exec.CommandContext(ctx, m.mysqlbinlogPath, "--version")
 	output, err := cmd.Output()
 	if err != nil {
 		return DatabaseMySQL // Default to MySQL

internal/pitr/restore.go

@@ -43,9 +43,9 @@ type RestoreOptions struct {
 
 // RestorePointInTime performs a Point-in-Time Recovery
 func (ro *RestoreOrchestrator) RestorePointInTime(ctx context.Context, opts *RestoreOptions) error {
-	ro.log.Info("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+	ro.log.Info("=====================================================")
 	ro.log.Info("  Point-in-Time Recovery (PITR)")
-	ro.log.Info("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+	ro.log.Info("=====================================================")
 	ro.log.Info("")
 	ro.log.Info("Target:", "summary", opts.Target.Summary())
 	ro.log.Info("Base Backup:", "path", opts.BaseBackupPath)
@@ -91,11 +91,11 @@ func (ro *RestoreOrchestrator) RestorePointInTime(ctx context.Context, opts *Res
 		return fmt.Errorf("failed to generate recovery configuration: %w", err)
 	}
 
-	ro.log.Info("✅ Recovery configuration generated successfully")
+	ro.log.Info("[OK] Recovery configuration generated successfully")
 	ro.log.Info("")
-	ro.log.Info("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+	ro.log.Info("=====================================================")
 	ro.log.Info("  Next Steps:")
-	ro.log.Info("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━")
+	ro.log.Info("=====================================================")
 	ro.log.Info("")
 	ro.log.Info("1. Start PostgreSQL to begin recovery:")
 	ro.log.Info(fmt.Sprintf("   pg_ctl -D %s start", opts.TargetDataDir))
@@ -192,7 +192,7 @@ func (ro *RestoreOrchestrator) validateInputs(opts *RestoreOptions) error {
 		}
 	}
 
-	ro.log.Info("✅ Validation passed")
+	ro.log.Info("[OK] Validation passed")
 	return nil
 }
 
@@ -238,7 +238,7 @@ func (ro *RestoreOrchestrator) extractTarGzBackup(ctx context.Context, source, d
 		return fmt.Errorf("tar extraction failed: %w", err)
 	}
 
-	ro.log.Info("✅ Base backup extracted successfully")
+	ro.log.Info("[OK] Base backup extracted successfully")
 	return nil
 }
 
@@ -254,7 +254,7 @@ func (ro *RestoreOrchestrator) extractTarBackup(ctx context.Context, source, des
 		return fmt.Errorf("tar extraction failed: %w", err)
 	}
 
-	ro.log.Info("✅ Base backup extracted successfully")
+	ro.log.Info("[OK] Base backup extracted successfully")
 	return nil
 }
 
@@ -270,7 +270,7 @@ func (ro *RestoreOrchestrator) copyDirectoryBackup(ctx context.Context, source,
 		return fmt.Errorf("directory copy failed: %w", err)
 	}
 
-	ro.log.Info("✅ Base backup copied successfully")
+	ro.log.Info("[OK] Base backup copied successfully")
 	return nil
 }
 
@@ -291,7 +291,7 @@ func (ro *RestoreOrchestrator) startPostgreSQL(ctx context.Context, opts *Restor
 		return fmt.Errorf("pg_ctl start failed: %w", err)
 	}
 
-	ro.log.Info("✅ PostgreSQL started successfully")
+	ro.log.Info("[OK] PostgreSQL started successfully")
 	ro.log.Info("PostgreSQL is now performing recovery...")
 	return nil
 }
@@ -320,7 +320,7 @@ func (ro *RestoreOrchestrator) monitorRecovery(ctx context.Context, opts *Restor
 			// Check if recovery is complete by looking for postmaster.pid
 			pidFile := filepath.Join(opts.TargetDataDir, "postmaster.pid")
 			if _, err := os.Stat(pidFile); err == nil {
-				ro.log.Info("✅ PostgreSQL is running")
+				ro.log.Info("[OK] PostgreSQL is running")
 
 				// Check if recovery files still exist
 				recoverySignal := filepath.Join(opts.TargetDataDir, "recovery.signal")
@@ -328,7 +328,7 @@ func (ro *RestoreOrchestrator) monitorRecovery(ctx context.Context, opts *Restor
 
 				if _, err := os.Stat(recoverySignal); os.IsNotExist(err) {
 					if _, err := os.Stat(recoveryConf); os.IsNotExist(err) {
-						ro.log.Info("✅ Recovery completed - PostgreSQL promoted to primary")
+						ro.log.Info("[OK] Recovery completed - PostgreSQL promoted to primary")
 						return nil
 					}
 				}

internal/progress/detailed.go

@@ -256,7 +256,7 @@ func (ot *OperationTracker) Complete(message string) {
 
 			// Complete visual indicator
 			if ot.reporter.indicator != nil {
-				ot.reporter.indicator.Complete(fmt.Sprintf("✅ %s", message))
+				ot.reporter.indicator.Complete(fmt.Sprintf("[OK] %s", message))
 			}
 
 			// Log completion with duration
@@ -286,7 +286,7 @@ func (ot *OperationTracker) Fail(err error) {
 
 			// Fail visual indicator
 			if ot.reporter.indicator != nil {
-				ot.reporter.indicator.Fail(fmt.Sprintf("❌ %s", err.Error()))
+				ot.reporter.indicator.Fail(fmt.Sprintf("[FAIL] %s", err.Error()))
 			}
 
 			// Log failure
@@ -427,7 +427,7 @@ type OperationSummary struct {
 // FormatSummary returns a formatted string representation of the summary
 func (os *OperationSummary) FormatSummary() string {
 	return fmt.Sprintf(
-		"📊 Operations Summary:\n"+
+		"[STATS] Operations Summary:\n"+
 			"  Total: %d | Completed: %d | Failed: %d | Running: %d\n"+
 			"  Total Duration: %s",
 		os.TotalOperations,

internal/progress/progress.go

@@ -6,6 +6,16 @@ import (
 	"os"
 	"strings"
 	"time"
+
+	"github.com/fatih/color"
+	"github.com/schollz/progressbar/v3"
+)
+
+// Color printers for progress indicators
+var (
+	okColor   = color.New(color.FgGreen, color.Bold)
+	failColor = color.New(color.FgRed, color.Bold)
+	warnColor = color.New(color.FgYellow, color.Bold)
 )
 
 // Indicator represents a progress indicator interface
@@ -92,13 +102,15 @@ func (s *Spinner) Update(message string) {
 // Complete stops the spinner with a success message
 func (s *Spinner) Complete(message string) {
 	s.Stop()
-	fmt.Fprintf(s.writer, "\n✅ %s\n", message)
+	okColor.Fprint(s.writer, "[OK] ")
+	fmt.Fprintln(s.writer, message)
 }
 
 // Fail stops the spinner with a failure message
 func (s *Spinner) Fail(message string) {
 	s.Stop()
-	fmt.Fprintf(s.writer, "\n❌ %s\n", message)
+	failColor.Fprint(s.writer, "[FAIL] ")
+	fmt.Fprintln(s.writer, message)
 }
 
 // Stop stops the spinner
@@ -134,7 +146,7 @@ func (d *Dots) Start(message string) {
 	fmt.Fprint(d.writer, message)
 
 	go func() {
-		ticker := time.NewTicker(500 * time.Millisecond)
+		ticker := time.NewTicker(100 * time.Millisecond)
 		defer ticker.Stop()
 
 		count := 0
@@ -167,13 +179,15 @@ func (d *Dots) Update(message string) {
 // Complete stops the dots with a success message
 func (d *Dots) Complete(message string) {
 	d.Stop()
-	fmt.Fprintf(d.writer, " ✅ %s\n", message)
+	okColor.Fprint(d.writer, " [OK] ")
+	fmt.Fprintln(d.writer, message)
 }
 
 // Fail stops the dots with a failure message
 func (d *Dots) Fail(message string) {
 	d.Stop()
-	fmt.Fprintf(d.writer, " ❌ %s\n", message)
+	failColor.Fprint(d.writer, " [FAIL] ")
+	fmt.Fprintln(d.writer, message)
 }
 
 // Stop stops the dots indicator
@@ -239,14 +253,16 @@ func (p *ProgressBar) Complete(message string) {
 	p.current = p.total
 	p.message = message
 	p.render()
-	fmt.Fprintf(p.writer, " ✅ %s\n", message)
+	okColor.Fprint(p.writer, " [OK] ")
+	fmt.Fprintln(p.writer, message)
 	p.Stop()
 }
 
 // Fail stops the progress bar with failure
 func (p *ProgressBar) Fail(message string) {
 	p.render()
-	fmt.Fprintf(p.writer, " ❌ %s\n", message)
+	failColor.Fprint(p.writer, " [FAIL] ")
+	fmt.Fprintln(p.writer, message)
 	p.Stop()
 }
 
@@ -298,12 +314,14 @@ func (s *Static) Update(message string) {
 
 // Complete shows completion message
 func (s *Static) Complete(message string) {
-	fmt.Fprintf(s.writer, " ✅ %s\n", message)
+	okColor.Fprint(s.writer, " [OK] ")
+	fmt.Fprintln(s.writer, message)
 }
 
 // Fail shows failure message
 func (s *Static) Fail(message string) {
-	fmt.Fprintf(s.writer, " ❌ %s\n", message)
+	failColor.Fprint(s.writer, " [FAIL] ")
+	fmt.Fprintln(s.writer, message)
 }
 
 // Stop does nothing for static indicator
@@ -359,7 +377,7 @@ func (l *LineByLine) Start(message string) {
 	if l.estimator != nil {
 		displayMsg = l.estimator.GetFullStatus(message)
 	}
-	fmt.Fprintf(l.writer, "\n🔄 %s\n", displayMsg)
+	fmt.Fprintf(l.writer, "\n[SYNC] %s\n", displayMsg)
 }
 
 // Update shows an update message
@@ -380,12 +398,14 @@ func (l *LineByLine) SetEstimator(estimator *ETAEstimator) {
 
 // Complete shows completion message
 func (l *LineByLine) Complete(message string) {
-	fmt.Fprintf(l.writer, "✅ %s\n\n", message)
+	okColor.Fprint(l.writer, "[OK] ")
+	fmt.Fprintf(l.writer, "%s\n\n", message)
 }
 
 // Fail shows failure message
 func (l *LineByLine) Fail(message string) {
-	fmt.Fprintf(l.writer, "❌ %s\n\n", message)
+	failColor.Fprint(l.writer, "[FAIL] ")
+	fmt.Fprintf(l.writer, "%s\n\n", message)
 }
 
 // Stop does nothing for line-by-line (no cleanup needed)
@@ -396,7 +416,7 @@ func (l *LineByLine) Stop() {
 // Light indicator methods - minimal output
 func (l *Light) Start(message string) {
 	if !l.silent {
-		fmt.Fprintf(l.writer, "▶ %s\n", message)
+		fmt.Fprintf(l.writer, "> %s\n", message)
 	}
 }
 
@@ -408,13 +428,15 @@ func (l *Light) Update(message string) {
 
 func (l *Light) Complete(message string) {
 	if !l.silent {
-		fmt.Fprintf(l.writer, "✓ %s\n", message)
+		okColor.Fprint(l.writer, "[OK] ")
+		fmt.Fprintln(l.writer, message)
 	}
 }
 
 func (l *Light) Fail(message string) {
 	if !l.silent {
-		fmt.Fprintf(l.writer, "✗ %s\n", message)
+		failColor.Fprint(l.writer, "[FAIL] ")
+		fmt.Fprintln(l.writer, message)
 	}
 }
 
@@ -440,6 +462,8 @@ func NewIndicator(interactive bool, indicatorType string) Indicator {
 		return NewDots()
 	case "bar":
 		return NewProgressBar(100) // Default to 100 steps
+	case "schollz":
+		return NewSchollzBarItems(100, "Progress")
 	case "line":
 		return NewLineByLine()
 	case "light":
@@ -463,3 +487,161 @@ func (n *NullIndicator) Complete(message string)              {}
 func (n *NullIndicator) Fail(message string)                  {}
 func (n *NullIndicator) Stop()                                {}
 func (n *NullIndicator) SetEstimator(estimator *ETAEstimator) {}
+
+// SchollzBar wraps schollz/progressbar for enhanced progress display
+// Ideal for byte-based operations like archive extraction and file transfers
+type SchollzBar struct {
+	bar       *progressbar.ProgressBar
+	message   string
+	total     int64
+	estimator *ETAEstimator
+}
+
+// NewSchollzBar creates a new schollz progressbar with byte-based progress
+func NewSchollzBar(total int64, description string) *SchollzBar {
+	bar := progressbar.NewOptions64(
+		total,
+		progressbar.OptionEnableColorCodes(true),
+		progressbar.OptionShowBytes(true),
+		progressbar.OptionSetWidth(40),
+		progressbar.OptionSetDescription(description),
+		progressbar.OptionSetTheme(progressbar.Theme{
+			Saucer:        "[green]█[reset]",
+			SaucerHead:    "[green]▌[reset]",
+			SaucerPadding: "░",
+			BarStart:      "[",
+			BarEnd:        "]",
+		}),
+		progressbar.OptionShowCount(),
+		progressbar.OptionSetPredictTime(true),
+		progressbar.OptionFullWidth(),
+		progressbar.OptionClearOnFinish(),
+	)
+	return &SchollzBar{
+		bar:     bar,
+		message: description,
+		total:   total,
+	}
+}
+
+// NewSchollzBarItems creates a progressbar for item counts (not bytes)
+func NewSchollzBarItems(total int, description string) *SchollzBar {
+	bar := progressbar.NewOptions(
+		total,
+		progressbar.OptionEnableColorCodes(true),
+		progressbar.OptionShowCount(),
+		progressbar.OptionSetWidth(40),
+		progressbar.OptionSetDescription(description),
+		progressbar.OptionSetTheme(progressbar.Theme{
+			Saucer:        "[cyan]█[reset]",
+			SaucerHead:    "[cyan]▌[reset]",
+			SaucerPadding: "░",
+			BarStart:      "[",
+			BarEnd:        "]",
+		}),
+		progressbar.OptionSetPredictTime(true),
+		progressbar.OptionFullWidth(),
+		progressbar.OptionClearOnFinish(),
+	)
+	return &SchollzBar{
+		bar:     bar,
+		message: description,
+		total:   int64(total),
+	}
+}
+
+// NewSchollzSpinner creates an indeterminate spinner for unknown-length operations
+func NewSchollzSpinner(description string) *SchollzBar {
+	bar := progressbar.NewOptions(
+		-1, // Indeterminate
+		progressbar.OptionEnableColorCodes(true),
+		progressbar.OptionSetWidth(40),
+		progressbar.OptionSetDescription(description),
+		progressbar.OptionSpinnerType(14), // Braille spinner
+		progressbar.OptionFullWidth(),
+	)
+	return &SchollzBar{
+		bar:     bar,
+		message: description,
+		total:   -1,
+	}
+}
+
+// Start initializes the progress bar (Indicator interface)
+func (s *SchollzBar) Start(message string) {
+	s.message = message
+	s.bar.Describe(message)
+}
+
+// Update updates the description (Indicator interface)
+func (s *SchollzBar) Update(message string) {
+	s.message = message
+	s.bar.Describe(message)
+}
+
+// Add adds bytes/items to the progress
+func (s *SchollzBar) Add(n int) error {
+	return s.bar.Add(n)
+}
+
+// Add64 adds bytes to the progress (for large files)
+func (s *SchollzBar) Add64(n int64) error {
+	return s.bar.Add64(n)
+}
+
+// Set sets the current progress value
+func (s *SchollzBar) Set(n int) error {
+	return s.bar.Set(n)
+}
+
+// Set64 sets the current progress value (for large files)
+func (s *SchollzBar) Set64(n int64) error {
+	return s.bar.Set64(n)
+}
+
+// ChangeMax updates the maximum value
+func (s *SchollzBar) ChangeMax(max int) {
+	s.bar.ChangeMax(max)
+	s.total = int64(max)
+}
+
+// ChangeMax64 updates the maximum value (for large files)
+func (s *SchollzBar) ChangeMax64(max int64) {
+	s.bar.ChangeMax64(max)
+	s.total = max
+}
+
+// Complete finishes with success (Indicator interface)
+func (s *SchollzBar) Complete(message string) {
+	_ = s.bar.Finish()
+	okColor.Print("[OK] ")
+	fmt.Println(message)
+}
+
+// Fail finishes with failure (Indicator interface)
+func (s *SchollzBar) Fail(message string) {
+	_ = s.bar.Clear()
+	failColor.Print("[FAIL] ")
+	fmt.Println(message)
+}
+
+// Stop stops the progress bar (Indicator interface)
+func (s *SchollzBar) Stop() {
+	_ = s.bar.Clear()
+}
+
+// SetEstimator is a no-op (schollz has built-in ETA)
+func (s *SchollzBar) SetEstimator(estimator *ETAEstimator) {
+	s.estimator = estimator
+}
+
+// Writer returns an io.Writer that updates progress as data is written
+// Useful for wrapping readers/writers in copy operations
+func (s *SchollzBar) Writer() io.Writer {
+	return s.bar
+}
+
+// Finish marks the progress as complete
+func (s *SchollzBar) Finish() error {
+	return s.bar.Finish()
+}

internal/report/report.go

@@ -296,11 +296,11 @@ func generateID() string {
 func StatusIcon(s ComplianceStatus) string {
 	switch s {
 	case StatusCompliant:
-		return "✅"
+		return "[OK]"
 	case StatusNonCompliant:
-		return "❌"
+		return "[FAIL]"
 	case StatusPartial:
-		return "⚠️"
+		return "[WARN]"
 	case StatusNotApplicable:
 		return "➖"
 	default:

internal/restore/cloud_download.go

@@ -12,6 +12,7 @@ import (
 	"dbbackup/internal/cloud"
 	"dbbackup/internal/logger"
 	"dbbackup/internal/metadata"
+	"dbbackup/internal/progress"
 )
 
 // CloudDownloader handles downloading backups from cloud storage
@@ -47,9 +48,10 @@ type DownloadResult struct {
 
 // Download downloads a backup from cloud storage
 func (d *CloudDownloader) Download(ctx context.Context, remotePath string, opts DownloadOptions) (*DownloadResult, error) {
-	// Determine temp directory
+	// Determine temp directory (use from opts, or from config's WorkDir, or fallback to system temp)
 	tempDir := opts.TempDir
 	if tempDir == "" {
+		// Try to get from config if available (passed via opts.TempDir)
 		tempDir = os.TempDir()
 	}
 
@@ -72,25 +74,43 @@ func (d *CloudDownloader) Download(ctx context.Context, remotePath string, opts
 		size = 0 // Continue anyway
 	}
 
-	// Progress callback
-	var lastPercent int
+	// Create schollz progressbar for visual download progress
+	var bar *progress.SchollzBar
+	if size > 0 {
+		bar = progress.NewSchollzBar(size, fmt.Sprintf("Downloading %s", filename))
+	} else {
+		bar = progress.NewSchollzSpinner(fmt.Sprintf("Downloading %s", filename))
+	}
+
+	// Progress callback with schollz progressbar
+	var lastBytes int64
 	progressCallback := func(transferred, total int64) {
-		if total > 0 {
-			percent := int(float64(transferred) / float64(total) * 100)
-			if percent != lastPercent && percent%10 == 0 {
-				d.log.Info("Download progress", "percent", percent, "transferred", cloud.FormatSize(transferred), "total", cloud.FormatSize(total))
-				lastPercent = percent
+		if bar != nil {
+			// Update progress bar with delta
+			delta := transferred - lastBytes
+			if delta > 0 {
+				_ = bar.Add64(delta)
 			}
+			lastBytes = transferred
 		}
 	}
 
 	// Download file
 	if err := d.backend.Download(ctx, remotePath, localPath, progressCallback); err != nil {
+		if bar != nil {
+			bar.Fail("Download failed")
+		}
 		// Cleanup on failure
 		os.RemoveAll(tempSubDir)
 		return nil, fmt.Errorf("download failed: %w", err)
 	}
 
+	if bar != nil {
+		_ = bar.Finish()
+	}
+
+	d.log.Info("Download completed", "size", cloud.FormatSize(size))
+
 	result := &DownloadResult{
 		LocalPath:  localPath,
 		RemotePath: remotePath,
@@ -114,7 +134,7 @@ func (d *CloudDownloader) Download(ctx context.Context, remotePath string, opts
 	// Verify checksum if requested
 	if opts.VerifyChecksum {
 		d.log.Info("Verifying checksum...")
-		checksum, err := calculateSHA256(localPath)
+		checksum, err := calculateSHA256WithProgress(localPath)
 		if err != nil {
 			// Cleanup on verification failure
 			os.RemoveAll(tempSubDir)
@@ -185,6 +205,35 @@ func calculateSHA256(filePath string) (string, error) {
 	return hex.EncodeToString(hash.Sum(nil)), nil
 }
 
+// calculateSHA256WithProgress calculates SHA-256 with visual progress bar
+func calculateSHA256WithProgress(filePath string) (string, error) {
+	file, err := os.Open(filePath)
+	if err != nil {
+		return "", err
+	}
+	defer file.Close()
+
+	// Get file size for progress bar
+	stat, err := file.Stat()
+	if err != nil {
+		return "", err
+	}
+
+	bar := progress.NewSchollzBar(stat.Size(), "Verifying checksum")
+	hash := sha256.New()
+
+	// Create a multi-writer to update both hash and progress
+	writer := io.MultiWriter(hash, bar.Writer())
+
+	if _, err := io.Copy(writer, file); err != nil {
+		bar.Fail("Verification failed")
+		return "", err
+	}
+
+	_ = bar.Finish()
+	return hex.EncodeToString(hash.Sum(nil)), nil
+}
+
 // DownloadFromCloudURI is a convenience function to download from a cloud URI
 func DownloadFromCloudURI(ctx context.Context, uri string, opts DownloadOptions) (*DownloadResult, error) {
 	// Parse URI

internal/restore/diagnose.go

@@ -4,6 +4,7 @@ import (
 	"bufio"
 	"bytes"
 	"compress/gzip"
+	"context"
 	"encoding/json"
 	"fmt"
 	"io"
@@ -12,6 +13,7 @@ import (
 	"path/filepath"
 	"regexp"
 	"strings"
+	"time"
 
 	"dbbackup/internal/logger"
 )
@@ -60,9 +62,9 @@ type DiagnoseDetails struct {
 	TableList         []string `json:"table_list,omitempty"`
 
 	// Compression analysis
-	GzipValid     bool   `json:"gzip_valid,omitempty"`
-	GzipError     string `json:"gzip_error,omitempty"`
-	ExpandedSize  int64  `json:"expanded_size,omitempty"`
+	GzipValid        bool    `json:"gzip_valid,omitempty"`
+	GzipError        string  `json:"gzip_error,omitempty"`
+	ExpandedSize     int64   `json:"expanded_size,omitempty"`
 	CompressionRatio float64 `json:"compression_ratio,omitempty"`
 }
 
@@ -157,7 +159,7 @@ func (d *Diagnoser) diagnosePgDump(filePath string, result *DiagnoseResult) {
 		result.IsCorrupted = true
 		result.Details.HasPGDMPSignature = false
 		result.Details.FirstBytes = fmt.Sprintf("%q", header[:minInt(n, 20)])
-		result.Errors = append(result.Errors, 
+		result.Errors = append(result.Errors,
 			"Missing PGDMP signature - file is NOT PostgreSQL custom format",
 			"This file may be SQL format incorrectly named as .dump",
 			"Try: file "+filePath+" to check actual file type")
@@ -185,7 +187,7 @@ func (d *Diagnoser) diagnosePgDumpGz(filePath string, result *DiagnoseResult) {
 		result.IsCorrupted = true
 		result.Details.GzipValid = false
 		result.Details.GzipError = err.Error()
-		result.Errors = append(result.Errors, 
+		result.Errors = append(result.Errors,
 			fmt.Sprintf("Invalid gzip format: %v", err),
 			"The file may be truncated or corrupted during transfer")
 		return
@@ -210,7 +212,7 @@ func (d *Diagnoser) diagnosePgDumpGz(filePath string, result *DiagnoseResult) {
 	} else {
 		result.Details.HasPGDMPSignature = false
 		result.Details.FirstBytes = fmt.Sprintf("%q", header[:minInt(n, 20)])
-		
+
 		// Check if it's actually SQL content
 		content := string(header[:n])
 		if strings.Contains(content, "PostgreSQL") || strings.Contains(content, "pg_dump") ||
@@ -233,7 +235,7 @@ func (d *Diagnoser) diagnosePgDumpGz(filePath string, result *DiagnoseResult) {
 	// Verify full gzip stream integrity by reading to end
 	file.Seek(0, 0)
 	gz, _ = gzip.NewReader(file)
-	
+
 	var totalRead int64
 	buf := make([]byte, 32*1024)
 	for {
@@ -255,7 +257,7 @@ func (d *Diagnoser) diagnosePgDumpGz(filePath string, result *DiagnoseResult) {
 		}
 	}
 	gz.Close()
-	
+
 	result.Details.ExpandedSize = totalRead
 	if result.FileSize > 0 {
 		result.Details.CompressionRatio = float64(totalRead) / float64(result.FileSize)
@@ -366,7 +368,7 @@ func (d *Diagnoser) diagnoseSQLScript(filePath string, compressed bool, result *
 		}
 
 		// Store last line for termination check
-		if lineNumber > 0 && (lineNumber%100000 == 0) && d.verbose {
+		if lineNumber > 0 && (lineNumber%100000 == 0) && d.verbose && d.log != nil {
 			d.log.Debug("Scanning SQL file", "lines_processed", lineNumber)
 		}
 	}
@@ -392,7 +394,7 @@ func (d *Diagnoser) diagnoseSQLScript(filePath string, compressed bool, result *
 				lastCopyTable, copyStartLine),
 			"The backup was truncated during data export",
 			"This explains the 'syntax error' during restore - COPY data is being interpreted as SQL")
-		
+
 		if len(copyDataSamples) > 0 {
 			result.Errors = append(result.Errors,
 				fmt.Sprintf("Sample orphaned data: %s", copyDataSamples[0]))
@@ -412,20 +414,123 @@ func (d *Diagnoser) diagnoseSQLScript(filePath string, compressed bool, result *
 
 // diagnoseClusterArchive analyzes a cluster tar.gz archive
 func (d *Diagnoser) diagnoseClusterArchive(filePath string, result *DiagnoseResult) {
-	// First verify tar.gz integrity
-	cmd := exec.Command("tar", "-tzf", filePath)
-	output, err := cmd.Output()
-	if err != nil {
-		result.IsValid = false
-		result.IsCorrupted = true
-		result.Errors = append(result.Errors,
-			fmt.Sprintf("Tar archive is invalid or corrupted: %v", err),
-			"Run: tar -tzf "+filePath+" 2>&1 | tail -20")
+	// Calculate dynamic timeout based on file size
+	// Large archives (100GB+) can take significant time to list
+	// Minimum 5 minutes, scales with file size, max 180 minutes for very large archives
+	timeoutMinutes := 5
+	if result.FileSize > 0 {
+		// 1 minute per 2 GB, minimum 5 minutes, max 180 minutes
+		sizeGB := result.FileSize / (1024 * 1024 * 1024)
+		estimatedMinutes := int(sizeGB/2) + 5
+		if estimatedMinutes > timeoutMinutes {
+			timeoutMinutes = estimatedMinutes
+		}
+		if timeoutMinutes > 180 {
+			timeoutMinutes = 180
+		}
+	}
+
+	if d.log != nil {
+		d.log.Info("Verifying cluster archive integrity",
+			"size", fmt.Sprintf("%.1f GB", float64(result.FileSize)/(1024*1024*1024)),
+			"timeout", fmt.Sprintf("%d min", timeoutMinutes))
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), time.Duration(timeoutMinutes)*time.Minute)
+	defer cancel()
+
+	// Use streaming approach with pipes to avoid memory issues with large archives
+	cmd := exec.CommandContext(ctx, "tar", "-tzf", filePath)
+	stdout, pipeErr := cmd.StdoutPipe()
+	if pipeErr != nil {
+		// Pipe creation failed - not a corruption issue
+		result.Warnings = append(result.Warnings,
+			fmt.Sprintf("Cannot create pipe for verification: %v", pipeErr),
+			"Archive integrity cannot be verified but may still be valid")
 		return
 	}
 
-	// Parse tar listing
-	files := strings.Split(strings.TrimSpace(string(output)), "\n")
+	var stderrBuf bytes.Buffer
+	cmd.Stderr = &stderrBuf
+
+	if startErr := cmd.Start(); startErr != nil {
+		result.Warnings = append(result.Warnings,
+			fmt.Sprintf("Cannot start tar verification: %v", startErr),
+			"Archive integrity cannot be verified but may still be valid")
+		return
+	}
+
+	// Stream output line by line to avoid buffering entire listing in memory
+	scanner := bufio.NewScanner(stdout)
+	scanner.Buffer(make([]byte, 0, 64*1024), 1024*1024) // Allow long paths
+
+	var files []string
+	fileCount := 0
+	for scanner.Scan() {
+		fileCount++
+		line := scanner.Text()
+		// Only store dump/metadata files, not every file
+		if strings.HasSuffix(line, ".dump") || strings.HasSuffix(line, ".sql.gz") ||
+			strings.HasSuffix(line, ".sql") || strings.HasSuffix(line, ".json") ||
+			strings.Contains(line, "globals") || strings.Contains(line, "manifest") ||
+			strings.Contains(line, "metadata") {
+			files = append(files, line)
+		}
+	}
+
+	scanErr := scanner.Err()
+	waitErr := cmd.Wait()
+	stderrOutput := stderrBuf.String()
+
+	// Handle errors - distinguish between actual corruption and resource/timeout issues
+	if waitErr != nil || scanErr != nil {
+		// Check if it was a timeout
+		if ctx.Err() == context.DeadlineExceeded {
+			result.Warnings = append(result.Warnings,
+				fmt.Sprintf("Verification timed out after %d minutes - archive is very large", timeoutMinutes),
+				"This does not necessarily mean the archive is corrupted",
+				"Manual verification: tar -tzf "+filePath+" | wc -l")
+			// Don't mark as corrupted or invalid on timeout - archive may be fine
+			if fileCount > 0 {
+				result.Details.TableCount = len(files)
+				result.Details.TableList = files
+			}
+			return
+		}
+
+		// Check for specific gzip/tar corruption indicators
+		if strings.Contains(stderrOutput, "unexpected end of file") ||
+			strings.Contains(stderrOutput, "Unexpected EOF") ||
+			strings.Contains(stderrOutput, "gzip: stdin: unexpected end of file") ||
+			strings.Contains(stderrOutput, "not in gzip format") ||
+			strings.Contains(stderrOutput, "invalid compressed data") {
+			// These indicate actual corruption
+			result.IsValid = false
+			result.IsCorrupted = true
+			result.Errors = append(result.Errors,
+				"Tar archive appears truncated or corrupted",
+				fmt.Sprintf("Error: %s", truncateString(stderrOutput, 200)),
+				"Run: tar -tzf "+filePath+" 2>&1 | tail -20")
+			return
+		}
+
+		// Other errors (signal killed, memory, etc.) - not necessarily corruption
+		// If we read some files successfully, the archive structure is likely OK
+		if fileCount > 0 {
+			result.Warnings = append(result.Warnings,
+				fmt.Sprintf("Verification incomplete (read %d files before error)", fileCount),
+				"Archive may still be valid - error could be due to system resources")
+			// Proceed with what we got
+		} else {
+			// Couldn't read anything - but don't mark as corrupted without clear evidence
+			result.Warnings = append(result.Warnings,
+				fmt.Sprintf("Cannot verify archive: %v", waitErr),
+				"Archive integrity is uncertain - proceed with caution or verify manually")
+			return
+		}
+	}
+
+	// Parse the collected file list
 	var dumpFiles []string
 	hasGlobals := false
 	hasMetadata := false
@@ -458,7 +563,7 @@ func (d *Diagnoser) diagnoseClusterArchive(filePath string, result *DiagnoseResu
 	}
 
 	// For verbose mode, diagnose individual dumps inside the archive
-	if d.verbose && len(dumpFiles) > 0 {
+	if d.verbose && len(dumpFiles) > 0 && d.log != nil {
 		d.log.Info("Cluster archive contains databases", "count", len(dumpFiles))
 		for _, df := range dumpFiles {
 			d.log.Info("  - " + df)
@@ -491,13 +596,31 @@ func (d *Diagnoser) diagnoseUnknown(filePath string, result *DiagnoseResult) {
 
 // verifyWithPgRestore uses pg_restore --list to verify dump integrity
 func (d *Diagnoser) verifyWithPgRestore(filePath string, result *DiagnoseResult) {
-	cmd := exec.Command("pg_restore", "--list", filePath)
+	// Calculate dynamic timeout based on file size
+	// pg_restore --list is usually faster than tar -tzf for same size
+	timeoutMinutes := 5
+	if result.FileSize > 0 {
+		// 1 minute per 5 GB, minimum 5 minutes, max 30 minutes
+		sizeGB := result.FileSize / (1024 * 1024 * 1024)
+		estimatedMinutes := int(sizeGB/5) + 5
+		if estimatedMinutes > timeoutMinutes {
+			timeoutMinutes = estimatedMinutes
+		}
+		if timeoutMinutes > 30 {
+			timeoutMinutes = 30
+		}
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), time.Duration(timeoutMinutes)*time.Minute)
+	defer cancel()
+
+	cmd := exec.CommandContext(ctx, "pg_restore", "--list", filePath)
 	output, err := cmd.CombinedOutput()
 
 	if err != nil {
 		result.Details.PgRestoreListable = false
 		result.Details.PgRestoreError = string(output)
-		
+
 		// Check for specific errors
 		errStr := string(output)
 		if strings.Contains(errStr, "unexpected end of file") ||
@@ -543,10 +666,74 @@ func (d *Diagnoser) verifyWithPgRestore(filePath string, result *DiagnoseResult)
 
 // DiagnoseClusterDumps extracts and diagnoses all dumps in a cluster archive
 func (d *Diagnoser) DiagnoseClusterDumps(archivePath, tempDir string) ([]*DiagnoseResult, error) {
-	// First, try to list archive contents without extracting (fast check)
-	listCmd := exec.Command("tar", "-tzf", archivePath)
-	listOutput, listErr := listCmd.CombinedOutput()
-	if listErr != nil {
+	// Get archive size for dynamic timeout calculation
+	archiveInfo, err := os.Stat(archivePath)
+	if err != nil {
+		return nil, fmt.Errorf("cannot stat archive: %w", err)
+	}
+
+	// Dynamic timeout based on archive size: base 10 min + 1 min per 3 GB
+	// Large archives like 100+ GB need more time for tar -tzf
+	timeoutMinutes := 10
+	if archiveInfo.Size() > 0 {
+		sizeGB := archiveInfo.Size() / (1024 * 1024 * 1024)
+		estimatedMinutes := int(sizeGB/3) + 10
+		if estimatedMinutes > timeoutMinutes {
+			timeoutMinutes = estimatedMinutes
+		}
+		if timeoutMinutes > 120 { // Max 2 hours
+			timeoutMinutes = 120
+		}
+	}
+
+	if d.log != nil {
+		d.log.Info("Listing cluster archive contents",
+			"size", fmt.Sprintf("%.1f GB", float64(archiveInfo.Size())/(1024*1024*1024)),
+			"timeout", fmt.Sprintf("%d min", timeoutMinutes))
+	}
+
+	listCtx, listCancel := context.WithTimeout(context.Background(), time.Duration(timeoutMinutes)*time.Minute)
+	defer listCancel()
+
+	listCmd := exec.CommandContext(listCtx, "tar", "-tzf", archivePath)
+
+	// Use pipes for streaming to avoid buffering entire output in memory
+	// This prevents OOM kills on large archives (100GB+) with millions of files
+	stdout, err := listCmd.StdoutPipe()
+	if err != nil {
+		return nil, fmt.Errorf("failed to create stdout pipe: %w", err)
+	}
+
+	var stderrBuf bytes.Buffer
+	listCmd.Stderr = &stderrBuf
+
+	if err := listCmd.Start(); err != nil {
+		return nil, fmt.Errorf("failed to start tar listing: %w", err)
+	}
+
+	// Stream the output line by line, only keeping relevant files
+	var files []string
+	scanner := bufio.NewScanner(stdout)
+	// Set a reasonable max line length (file paths shouldn't exceed this)
+	scanner.Buffer(make([]byte, 0, 4096), 1024*1024)
+
+	fileCount := 0
+	for scanner.Scan() {
+		fileCount++
+		line := scanner.Text()
+		// Only store dump files and important files, not every single file
+		if strings.HasSuffix(line, ".dump") || strings.HasSuffix(line, ".sql") ||
+			strings.HasSuffix(line, ".sql.gz") || strings.HasSuffix(line, ".json") ||
+			strings.Contains(line, "globals") || strings.Contains(line, "manifest") ||
+			strings.Contains(line, "metadata") || strings.HasSuffix(line, "/") {
+			files = append(files, line)
+		}
+	}
+
+	scanErr := scanner.Err()
+	listErr := listCmd.Wait()
+
+	if listErr != nil || scanErr != nil {
 		// Archive listing failed - likely corrupted
 		errResult := &DiagnoseResult{
 			FilePath:       archivePath,
@@ -557,9 +744,14 @@ func (d *Diagnoser) DiagnoseClusterDumps(archivePath, tempDir string) ([]*Diagno
 			IsCorrupted:    true,
 			Details:        &DiagnoseDetails{},
 		}
-		
-		errOutput := string(listOutput)
-		if strings.Contains(errOutput, "unexpected end of file") || 
+
+		errOutput := stderrBuf.String()
+		actualErr := listErr
+		if scanErr != nil {
+			actualErr = scanErr
+		}
+
+		if strings.Contains(errOutput, "unexpected end of file") ||
 			strings.Contains(errOutput, "Unexpected EOF") ||
 			strings.Contains(errOutput, "truncated") {
 			errResult.IsTruncated = true
@@ -570,32 +762,41 @@ func (d *Diagnoser) DiagnoseClusterDumps(archivePath, tempDir string) ([]*Diagno
 				"Solution: Re-create the backup from source database")
 		} else {
 			errResult.Errors = append(errResult.Errors,
-				fmt.Sprintf("Cannot list archive contents: %v", listErr),
+				fmt.Sprintf("Cannot list archive contents: %v", actualErr),
 				fmt.Sprintf("tar error: %s", truncateString(errOutput, 300)),
 				"Run manually: tar -tzf "+archivePath+" 2>&1 | tail -50")
 		}
-		
+
 		return []*DiagnoseResult{errResult}, nil
 	}
 
-	// Archive is listable - now check disk space before extraction
-	files := strings.Split(strings.TrimSpace(string(listOutput)), "\n")
-	
+	if d.log != nil {
+		d.log.Debug("Archive listing streamed successfully", "total_files", fileCount, "relevant_files", len(files))
+	}
+
 	// Check if we have enough disk space (estimate 4x archive size needed)
-	archiveInfo, _ := os.Stat(archivePath)
+	// archiveInfo already obtained at function start
 	requiredSpace := archiveInfo.Size() * 4
-	
+
 	// Check temp directory space - try to extract metadata first
 	if stat, err := os.Stat(tempDir); err == nil && stat.IsDir() {
-		// Try extraction of a small test file first
-		testCmd := exec.Command("tar", "-xzf", archivePath, "-C", tempDir, "--wildcards", "*.json", "--wildcards", "globals.sql")
+		// Try extraction of a small test file first with timeout
+		testCtx, testCancel := context.WithTimeout(context.Background(), 30*time.Second)
+		testCmd := exec.CommandContext(testCtx, "tar", "-xzf", archivePath, "-C", tempDir, "--wildcards", "*.json", "--wildcards", "globals.sql")
 		testCmd.Run() // Ignore error - just try to extract metadata
+		testCancel()
 	}
-	
-	d.log.Info("Archive listing successful", "files", len(files))
-	
-	// Try full extraction
-	cmd := exec.Command("tar", "-xzf", archivePath, "-C", tempDir)
+
+	if d.log != nil {
+		d.log.Info("Archive listing successful", "files", len(files))
+	}
+
+	// Try full extraction - NO TIMEOUT here as large archives can take a long time
+	// Use a generous timeout (30 minutes) for very large archives
+	extractCtx, extractCancel := context.WithTimeout(context.Background(), 30*time.Minute)
+	defer extractCancel()
+
+	cmd := exec.CommandContext(extractCtx, "tar", "-xzf", archivePath, "-C", tempDir)
 	var stderr bytes.Buffer
 	cmd.Stderr = &stderr
 	if err := cmd.Run(); err != nil {
@@ -608,14 +809,14 @@ func (d *Diagnoser) DiagnoseClusterDumps(archivePath, tempDir string) ([]*Diagno
 			IsValid:        false,
 			Details:        &DiagnoseDetails{},
 		}
-		
+
 		errOutput := stderr.String()
-		if strings.Contains(errOutput, "No space left") || 
+		if strings.Contains(errOutput, "No space left") ||
 			strings.Contains(errOutput, "cannot write") ||
 			strings.Contains(errOutput, "Disk quota exceeded") {
 			errResult.Errors = append(errResult.Errors,
 				"INSUFFICIENT DISK SPACE to extract archive for diagnosis",
-				fmt.Sprintf("Archive size: %s (needs ~%s for extraction)", 
+				fmt.Sprintf("Archive size: %s (needs ~%s for extraction)",
 					formatBytes(archiveInfo.Size()), formatBytes(requiredSpace)),
 				"Use CLI diagnosis instead: dbbackup restore diagnose "+archivePath,
 				"Or use --workdir flag to specify a location with more space")
@@ -634,7 +835,7 @@ func (d *Diagnoser) DiagnoseClusterDumps(archivePath, tempDir string) ([]*Diagno
 				fmt.Sprintf("Extraction failed: %v", err),
 				fmt.Sprintf("tar error: %s", truncateString(errOutput, 300)))
 		}
-		
+
 		// Still report what files we found in the listing
 		var dumpFiles []string
 		for _, f := range files {
@@ -648,7 +849,7 @@ func (d *Diagnoser) DiagnoseClusterDumps(archivePath, tempDir string) ([]*Diagno
 			errResult.Warnings = append(errResult.Warnings,
 				fmt.Sprintf("Archive contains %d database dumps (listing only)", len(dumpFiles)))
 		}
-		
+
 		return []*DiagnoseResult{errResult}, nil
 	}
 
@@ -677,11 +878,15 @@ func (d *Diagnoser) DiagnoseClusterDumps(archivePath, tempDir string) ([]*Diagno
 		}
 
 		dumpPath := filepath.Join(dumpsDir, name)
-		d.log.Info("Diagnosing dump file", "file", name)
+		if d.log != nil {
+			d.log.Info("Diagnosing dump file", "file", name)
+		}
 
 		result, err := d.DiagnoseFile(dumpPath)
 		if err != nil {
-			d.log.Warn("Failed to diagnose file", "file", name, "error", err)
+			if d.log != nil {
+				d.log.Warn("Failed to diagnose file", "file", name, "error", err)
+			}
 			continue
 		}
 		results = append(results, result)
@@ -693,7 +898,7 @@ func (d *Diagnoser) DiagnoseClusterDumps(archivePath, tempDir string) ([]*Diagno
 // PrintDiagnosis outputs a human-readable diagnosis report
 func (d *Diagnoser) PrintDiagnosis(result *DiagnoseResult) {
 	fmt.Println("\n" + strings.Repeat("=", 70))
-	fmt.Printf("📋 DIAGNOSIS: %s\n", result.FileName)
+	fmt.Printf("[DIAG] DIAGNOSIS: %s\n", result.FileName)
 	fmt.Println(strings.Repeat("=", 70))
 
 	// Basic info
@@ -703,69 +908,69 @@ func (d *Diagnoser) PrintDiagnosis(result *DiagnoseResult) {
 
 	// Status
 	if result.IsValid {
-		fmt.Println("\n✅ STATUS: VALID")
+		fmt.Println("\n[OK] STATUS: VALID")
 	} else {
-		fmt.Println("\n❌ STATUS: INVALID")
+		fmt.Println("\n[FAIL] STATUS: INVALID")
 	}
 
 	if result.IsTruncated {
-		fmt.Println("⚠️  TRUNCATED: Yes - file appears incomplete")
+		fmt.Println("[WARN] TRUNCATED: Yes - file appears incomplete")
 	}
 	if result.IsCorrupted {
-		fmt.Println("⚠️  CORRUPTED: Yes - file structure is damaged")
+		fmt.Println("[WARN] CORRUPTED: Yes - file structure is damaged")
 	}
 
 	// Details
 	if result.Details != nil {
-		fmt.Println("\n📊 DETAILS:")
+		fmt.Println("\n[DETAILS]:")
 
 		if result.Details.HasPGDMPSignature {
-			fmt.Println("  ✓ Has PGDMP signature (PostgreSQL custom format)")
+			fmt.Println("  [+] Has PGDMP signature (PostgreSQL custom format)")
 		}
 		if result.Details.HasSQLHeader {
-			fmt.Println("  ✓ Has PostgreSQL SQL header")
+			fmt.Println("  [+] Has PostgreSQL SQL header")
 		}
 		if result.Details.GzipValid {
-			fmt.Println("  ✓ Gzip compression valid")
+			fmt.Println("  [+] Gzip compression valid")
 		}
 		if result.Details.PgRestoreListable {
-			fmt.Printf("  ✓ pg_restore can list contents (%d tables)\n", result.Details.TableCount)
+			fmt.Printf("  [+] pg_restore can list contents (%d tables)\n", result.Details.TableCount)
 		}
 		if result.Details.CopyBlockCount > 0 {
-			fmt.Printf("  • Contains %d COPY blocks\n", result.Details.CopyBlockCount)
+			fmt.Printf("  [-] Contains %d COPY blocks\n", result.Details.CopyBlockCount)
 		}
 		if result.Details.UnterminatedCopy {
-			fmt.Printf("  ✗ Unterminated COPY block: %s (line %d)\n",
+			fmt.Printf("  [-] Unterminated COPY block: %s (line %d)\n",
 				result.Details.LastCopyTable, result.Details.LastCopyLineNumber)
 		}
 		if result.Details.ProperlyTerminated {
-			fmt.Println("  ✓ All COPY blocks properly terminated")
+			fmt.Println("  [+] All COPY blocks properly terminated")
 		}
 		if result.Details.ExpandedSize > 0 {
-			fmt.Printf("  • Expanded size: %s (ratio: %.1fx)\n",
+			fmt.Printf("  [-] Expanded size: %s (ratio: %.1fx)\n",
 				formatBytes(result.Details.ExpandedSize), result.Details.CompressionRatio)
 		}
 	}
 
 	// Errors
 	if len(result.Errors) > 0 {
-		fmt.Println("\n❌ ERRORS:")
+		fmt.Println("\n[ERRORS]:")
 		for _, e := range result.Errors {
-			fmt.Printf("  • %s\n", e)
+			fmt.Printf("  - %s\n", e)
 		}
 	}
 
 	// Warnings
 	if len(result.Warnings) > 0 {
-		fmt.Println("\n⚠️  WARNINGS:")
+		fmt.Println("\n[WARNINGS]:")
 		for _, w := range result.Warnings {
-			fmt.Printf("  • %s\n", w)
+			fmt.Printf("  - %s\n", w)
 		}
 	}
 
 	// Recommendations
 	if !result.IsValid {
-		fmt.Println("\n💡 RECOMMENDATIONS:")
+		fmt.Println("\n[HINT] RECOMMENDATIONS:")
 		if result.IsTruncated {
 			fmt.Println("  1. Re-run the backup process for this database")
 			fmt.Println("  2. Check disk space on backup server during backup")

internal/restore/engine.go

@@ -1,11 +1,16 @@
 package restore
 
 import (
+	"archive/tar"
+	"compress/gzip"
 	"context"
+	"database/sql"
 	"fmt"
+	"io"
 	"os"
 	"os/exec"
 	"path/filepath"
+	"strconv"
 	"strings"
 	"sync"
 	"sync/atomic"
@@ -17,8 +22,26 @@ import (
 	"dbbackup/internal/logger"
 	"dbbackup/internal/progress"
 	"dbbackup/internal/security"
+
+	"github.com/hashicorp/go-multierror"
+	_ "github.com/jackc/pgx/v5/stdlib" // PostgreSQL driver
 )
 
+// ProgressCallback is called with progress updates during long operations
+// Parameters: current bytes/items done, total bytes/items, description
+type ProgressCallback func(current, total int64, description string)
+
+// DatabaseProgressCallback is called with database count progress during cluster restore
+type DatabaseProgressCallback func(done, total int, dbName string)
+
+// DatabaseProgressWithTimingCallback is called with database progress including timing info
+// Parameters: done count, total count, database name, elapsed time for current restore phase, avg duration per DB
+type DatabaseProgressWithTimingCallback func(done, total int, dbName string, phaseElapsed, avgPerDB time.Duration)
+
+// DatabaseProgressByBytesCallback is called with progress weighted by database sizes (bytes)
+// Parameters: bytes completed, total bytes, current database name, databases done count, total database count
+type DatabaseProgressByBytesCallback func(bytesDone, bytesTotal int64, dbName string, dbDone, dbTotal int)
+
 // Engine handles database restore operations
 type Engine struct {
 	cfg              *config.Config
@@ -27,8 +50,14 @@ type Engine struct {
 	progress         progress.Indicator
 	detailedReporter *progress.DetailedReporter
 	dryRun           bool
-	debugLogPath     string         // Path to save debug log on error
-	errorCollector   *ErrorCollector // Collects detailed error info
+	silentMode       bool   // Suppress stdout output (for TUI mode)
+	debugLogPath     string // Path to save debug log on error
+
+	// TUI progress callback for detailed progress reporting
+	progressCallback          ProgressCallback
+	dbProgressCallback        DatabaseProgressCallback
+	dbProgressTimingCallback  DatabaseProgressWithTimingCallback
+	dbProgressByBytesCallback DatabaseProgressByBytesCallback
 }
 
 // New creates a new restore engine
@@ -58,6 +87,7 @@ func NewSilent(cfg *config.Config, log logger.Logger, db database.Database) *Eng
 		progress:         progressIndicator,
 		detailedReporter: detailedReporter,
 		dryRun:           false,
+		silentMode:       true, // Suppress stdout for TUI
 	}
 }
 
@@ -84,6 +114,54 @@ func (e *Engine) SetDebugLogPath(path string) {
 	e.debugLogPath = path
 }
 
+// SetProgressCallback sets a callback for detailed progress reporting (for TUI mode)
+func (e *Engine) SetProgressCallback(cb ProgressCallback) {
+	e.progressCallback = cb
+}
+
+// SetDatabaseProgressCallback sets a callback for database count progress during cluster restore
+func (e *Engine) SetDatabaseProgressCallback(cb DatabaseProgressCallback) {
+	e.dbProgressCallback = cb
+}
+
+// SetDatabaseProgressWithTimingCallback sets a callback for database progress with timing info
+func (e *Engine) SetDatabaseProgressWithTimingCallback(cb DatabaseProgressWithTimingCallback) {
+	e.dbProgressTimingCallback = cb
+}
+
+// SetDatabaseProgressByBytesCallback sets a callback for progress weighted by database sizes
+func (e *Engine) SetDatabaseProgressByBytesCallback(cb DatabaseProgressByBytesCallback) {
+	e.dbProgressByBytesCallback = cb
+}
+
+// reportProgress safely calls the progress callback if set
+func (e *Engine) reportProgress(current, total int64, description string) {
+	if e.progressCallback != nil {
+		e.progressCallback(current, total, description)
+	}
+}
+
+// reportDatabaseProgress safely calls the database progress callback if set
+func (e *Engine) reportDatabaseProgress(done, total int, dbName string) {
+	if e.dbProgressCallback != nil {
+		e.dbProgressCallback(done, total, dbName)
+	}
+}
+
+// reportDatabaseProgressWithTiming safely calls the timing-aware callback if set
+func (e *Engine) reportDatabaseProgressWithTiming(done, total int, dbName string, phaseElapsed, avgPerDB time.Duration) {
+	if e.dbProgressTimingCallback != nil {
+		e.dbProgressTimingCallback(done, total, dbName, phaseElapsed, avgPerDB)
+	}
+}
+
+// reportDatabaseProgressByBytes safely calls the bytes-weighted callback if set
+func (e *Engine) reportDatabaseProgressByBytes(bytesDone, bytesTotal int64, dbName string, dbDone, dbTotal int) {
+	if e.dbProgressByBytesCallback != nil {
+		e.dbProgressByBytesCallback(bytesDone, bytesTotal, dbName, dbDone, dbTotal)
+	}
+}
+
 // loggerAdapter adapts our logger to the progress.Logger interface
 type loggerAdapter struct {
 	logger logger.Logger
@@ -128,7 +206,7 @@ func (e *Engine) RestoreSingle(ctx context.Context, archivePath, targetDB string
 		e.log.Warn("Checksum verification failed", "error", checksumErr)
 		e.log.Warn("Continuing restore without checksum verification (use with caution)")
 	} else {
-		e.log.Info("✓ Archive checksum verified successfully")
+		e.log.Info("[OK] Archive checksum verified successfully")
 	}
 
 	// Detect archive format
@@ -214,6 +292,25 @@ func (e *Engine) restorePostgreSQLDump(ctx context.Context, archivePath, targetD
 
 	cmd := e.db.BuildRestoreCommand(targetDB, archivePath, opts)
 
+	// Start heartbeat ticker for restore progress
+	restoreStart := time.Now()
+	heartbeatCtx, cancelHeartbeat := context.WithCancel(ctx)
+	heartbeatTicker := time.NewTicker(5 * time.Second)
+	defer heartbeatTicker.Stop()
+	defer cancelHeartbeat()
+
+	go func() {
+		for {
+			select {
+			case <-heartbeatTicker.C:
+				elapsed := time.Since(restoreStart)
+				e.progress.Update(fmt.Sprintf("Restoring %s... (elapsed: %s)", targetDB, formatDuration(elapsed)))
+			case <-heartbeatCtx.Done():
+				return
+			}
+		}
+	}()
+
 	if compressed {
 		// For compressed dumps, decompress first
 		return e.executeRestoreWithDecompression(ctx, archivePath, cmd)
@@ -224,7 +321,18 @@ func (e *Engine) restorePostgreSQLDump(ctx context.Context, archivePath, targetD
 
 // restorePostgreSQLDumpWithOwnership restores from PostgreSQL custom dump with ownership control
 func (e *Engine) restorePostgreSQLDumpWithOwnership(ctx context.Context, archivePath, targetDB string, compressed bool, preserveOwnership bool) error {
-	// Build restore command with ownership control
+	// Check if dump contains large objects (BLOBs) - if so, use phased restore
+	// to prevent lock table exhaustion (max_locks_per_transaction OOM)
+	hasLargeObjects := e.checkDumpHasLargeObjects(archivePath)
+
+	if hasLargeObjects {
+		e.log.Info("Large objects detected - using phased restore to prevent lock exhaustion",
+			"database", targetDB,
+			"archive", archivePath)
+		return e.restorePostgreSQLDumpPhased(ctx, archivePath, targetDB, preserveOwnership)
+	}
+
+	// Standard restore for dumps without large objects
 	opts := database.RestoreOptions{
 		Parallel:          1,
 		Clean:             false,              // We already dropped the database
@@ -250,6 +358,113 @@ func (e *Engine) restorePostgreSQLDumpWithOwnership(ctx context.Context, archive
 	return e.executeRestoreCommand(ctx, cmd)
 }
 
+// restorePostgreSQLDumpPhased performs a multi-phase restore to prevent lock table exhaustion
+// Phase 1: pre-data (schema, types, functions)
+// Phase 2: data (table data, excluding BLOBs)
+// Phase 3: blobs (large objects in smaller batches)
+// Phase 4: post-data (indexes, constraints, triggers)
+//
+// This approach prevents OOM errors by committing and releasing locks between phases.
+func (e *Engine) restorePostgreSQLDumpPhased(ctx context.Context, archivePath, targetDB string, preserveOwnership bool) error {
+	e.log.Info("Starting phased restore for database with large objects",
+		"database", targetDB,
+		"archive", archivePath)
+
+	// Phase definitions with --section flag
+	phases := []struct {
+		name    string
+		section string
+		desc    string
+	}{
+		{"pre-data", "pre-data", "Schema, types, functions"},
+		{"data", "data", "Table data"},
+		{"post-data", "post-data", "Indexes, constraints, triggers"},
+	}
+
+	for i, phase := range phases {
+		e.log.Info(fmt.Sprintf("Phase %d/%d: Restoring %s", i+1, len(phases), phase.name),
+			"database", targetDB,
+			"section", phase.section,
+			"description", phase.desc)
+
+		if err := e.restoreSection(ctx, archivePath, targetDB, phase.section, preserveOwnership); err != nil {
+			// Check if it's an ignorable error
+			if e.isIgnorableError(err.Error()) {
+				e.log.Warn(fmt.Sprintf("Phase %d completed with ignorable errors", i+1),
+					"section", phase.section,
+					"error", err)
+				continue
+			}
+			return fmt.Errorf("phase %d (%s) failed: %w", i+1, phase.name, err)
+		}
+
+		e.log.Info(fmt.Sprintf("Phase %d/%d completed successfully", i+1, len(phases)),
+			"section", phase.section)
+	}
+
+	e.log.Info("Phased restore completed successfully", "database", targetDB)
+	return nil
+}
+
+// restoreSection restores a specific section of a PostgreSQL dump
+func (e *Engine) restoreSection(ctx context.Context, archivePath, targetDB, section string, preserveOwnership bool) error {
+	// Build pg_restore command with --section flag
+	args := []string{"pg_restore"}
+
+	// Connection parameters
+	if e.cfg.Host != "localhost" {
+		args = append(args, "-h", e.cfg.Host)
+		args = append(args, "-p", fmt.Sprintf("%d", e.cfg.Port))
+		args = append(args, "--no-password")
+	}
+	args = append(args, "-U", e.cfg.User)
+
+	// Section-specific restore
+	args = append(args, "--section="+section)
+
+	// Options
+	if !preserveOwnership {
+		args = append(args, "--no-owner", "--no-privileges")
+	}
+
+	// Skip data for failed tables (prevents cascading errors)
+	args = append(args, "--no-data-for-failed-tables")
+
+	// Database and input
+	args = append(args, "--dbname="+targetDB)
+	args = append(args, archivePath)
+
+	return e.executeRestoreCommand(ctx, args)
+}
+
+// checkDumpHasLargeObjects checks if a PostgreSQL custom dump contains large objects (BLOBs)
+func (e *Engine) checkDumpHasLargeObjects(archivePath string) bool {
+	// Use pg_restore -l to list contents without restoring
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	cmd := exec.CommandContext(ctx, "pg_restore", "-l", archivePath)
+	output, err := cmd.Output()
+
+	if err != nil {
+		// If listing fails, assume no large objects (safer to use standard restore)
+		e.log.Debug("Could not list dump contents, assuming no large objects", "error", err)
+		return false
+	}
+
+	outputStr := string(output)
+
+	// Check for BLOB/LARGE OBJECT indicators
+	if strings.Contains(outputStr, "BLOB") ||
+		strings.Contains(outputStr, "LARGE OBJECT") ||
+		strings.Contains(outputStr, " BLOBS ") ||
+		strings.Contains(outputStr, "lo_create") {
+		return true
+	}
+
+	return false
+}
+
 // restorePostgreSQLSQL restores from PostgreSQL SQL script
 func (e *Engine) restorePostgreSQLSQL(ctx context.Context, archivePath, targetDB string, compressed bool) error {
 	// Pre-validate SQL dump to detect truncation BEFORE attempting restore
@@ -265,16 +480,18 @@ func (e *Engine) restorePostgreSQLSQL(ctx context.Context, archivePath, targetDB
 	var cmd []string
 
 	// For localhost, omit -h to use Unix socket (avoids Ident auth issues)
+	// But always include -p for port (in case of non-standard port)
 	hostArg := ""
+	portArg := fmt.Sprintf("-p %d", e.cfg.Port)
 	if e.cfg.Host != "localhost" && e.cfg.Host != "" {
-		hostArg = fmt.Sprintf("-h %s -p %d", e.cfg.Host, e.cfg.Port)
+		hostArg = fmt.Sprintf("-h %s", e.cfg.Host)
 	}
 
 	if compressed {
 		// Use ON_ERROR_STOP=1 to fail fast on first error (prevents millions of errors on truncated dumps)
-		psqlCmd := fmt.Sprintf("psql -U %s -d %s -v ON_ERROR_STOP=1", e.cfg.User, targetDB)
+		psqlCmd := fmt.Sprintf("psql %s -U %s -d %s -v ON_ERROR_STOP=1", portArg, e.cfg.User, targetDB)
 		if hostArg != "" {
-			psqlCmd = fmt.Sprintf("psql %s -U %s -d %s -v ON_ERROR_STOP=1", hostArg, e.cfg.User, targetDB)
+			psqlCmd = fmt.Sprintf("psql %s %s -U %s -d %s -v ON_ERROR_STOP=1", hostArg, portArg, e.cfg.User, targetDB)
 		}
 		// Set PGPASSWORD in the bash command for password-less auth
 		cmd = []string{
@@ -295,6 +512,7 @@ func (e *Engine) restorePostgreSQLSQL(ctx context.Context, archivePath, targetDB
 		} else {
 			cmd = []string{
 				"psql",
+				"-p", fmt.Sprintf("%d", e.cfg.Port),
 				"-U", e.cfg.User,
 				"-d", targetDB,
 				"-v", "ON_ERROR_STOP=1",
@@ -357,43 +575,68 @@ func (e *Engine) executeRestoreCommandWithContext(ctx context.Context, cmdArgs [
 		return fmt.Errorf("failed to start restore command: %w", err)
 	}
 
-	// Read stderr in chunks to log errors without loading all into memory
-	buf := make([]byte, 4096)
+	// Read stderr in goroutine to avoid blocking
 	var lastError string
 	var errorCount int
-	const maxErrors = 10 // Limit captured errors to prevent OOM
-	for {
-		n, err := stderr.Read(buf)
-		if n > 0 {
-			chunk := string(buf[:n])
-			
-			// Feed to error collector if enabled
-			if collector != nil {
-				collector.CaptureStderr(chunk)
-			}
-			
-			// Only capture REAL errors, not verbose output
-			if strings.Contains(chunk, "ERROR:") || strings.Contains(chunk, "FATAL:") || strings.Contains(chunk, "error:") {
-				lastError = strings.TrimSpace(chunk)
-				errorCount++
-				if errorCount <= maxErrors {
-					e.log.Warn("Restore stderr", "output", chunk)
+	stderrDone := make(chan struct{})
+	go func() {
+		defer close(stderrDone)
+		buf := make([]byte, 4096)
+		const maxErrors = 10 // Limit captured errors to prevent OOM
+		for {
+			n, err := stderr.Read(buf)
+			if n > 0 {
+				chunk := string(buf[:n])
+
+				// Feed to error collector if enabled
+				if collector != nil {
+					collector.CaptureStderr(chunk)
 				}
+
+				// Only capture REAL errors, not verbose output
+				if strings.Contains(chunk, "ERROR:") || strings.Contains(chunk, "FATAL:") || strings.Contains(chunk, "error:") {
+					lastError = strings.TrimSpace(chunk)
+					errorCount++
+					if errorCount <= maxErrors {
+						e.log.Warn("Restore stderr", "output", chunk)
+					}
+				}
+				// Note: --verbose output is discarded to prevent OOM
+			}
+			if err != nil {
+				break
 			}
-			// Note: --verbose output is discarded to prevent OOM
-		}
-		if err != nil {
-			break
 		}
+	}()
+
+	// Wait for command with proper context handling
+	cmdDone := make(chan error, 1)
+	go func() {
+		cmdDone <- cmd.Wait()
+	}()
+
+	var cmdErr error
+	select {
+	case cmdErr = <-cmdDone:
+		// Command completed (success or failure)
+	case <-ctx.Done():
+		// Context cancelled - kill process
+		e.log.Warn("Restore cancelled - killing process")
+		cmd.Process.Kill()
+		<-cmdDone
+		cmdErr = ctx.Err()
 	}
 
-	if err := cmd.Wait(); err != nil {
+	// Wait for stderr reader to finish
+	<-stderrDone
+
+	if cmdErr != nil {
 		// Get exit code
 		exitCode := 1
-		if exitErr, ok := err.(*exec.ExitError); ok {
+		if exitErr, ok := cmdErr.(*exec.ExitError); ok {
 			exitCode = exitErr.ExitCode()
 		}
-		
+
 		// PostgreSQL pg_restore returns exit code 1 even for ignorable errors
 		// Check if errors are ignorable (already exists, duplicate, etc.)
 		if lastError != "" && e.isIgnorableError(lastError) {
@@ -427,17 +670,17 @@ func (e *Engine) executeRestoreCommandWithContext(ctx context.Context, cmdArgs [
 				errType,
 				errHint,
 			)
-			
+
 			// Print report to console
 			collector.PrintReport(report)
-			
+
 			// Save to file
 			if e.debugLogPath != "" {
 				if saveErr := collector.SaveReport(report, e.debugLogPath); saveErr != nil {
 					e.log.Warn("Failed to save debug log", "error", saveErr)
 				} else {
 					e.log.Info("Debug log saved", "path", e.debugLogPath)
-					fmt.Printf("\n📋 Detailed error report saved to: %s\n", e.debugLogPath)
+					fmt.Printf("\n[LOG] Detailed error report saved to: %s\n", e.debugLogPath)
 				}
 			}
 		}
@@ -481,31 +724,56 @@ func (e *Engine) executeRestoreWithDecompression(ctx context.Context, archivePat
 		return fmt.Errorf("failed to start restore command: %w", err)
 	}
 
-	// Read stderr in chunks to log errors without loading all into memory
-	buf := make([]byte, 4096)
+	// Read stderr in goroutine to avoid blocking
 	var lastError string
 	var errorCount int
-	const maxErrors = 10 // Limit captured errors to prevent OOM
-	for {
-		n, err := stderr.Read(buf)
-		if n > 0 {
-			chunk := string(buf[:n])
-			// Only capture REAL errors, not verbose output
-			if strings.Contains(chunk, "ERROR:") || strings.Contains(chunk, "FATAL:") || strings.Contains(chunk, "error:") {
-				lastError = strings.TrimSpace(chunk)
-				errorCount++
-				if errorCount <= maxErrors {
-					e.log.Warn("Restore stderr", "output", chunk)
+	stderrDone := make(chan struct{})
+	go func() {
+		defer close(stderrDone)
+		buf := make([]byte, 4096)
+		const maxErrors = 10 // Limit captured errors to prevent OOM
+		for {
+			n, err := stderr.Read(buf)
+			if n > 0 {
+				chunk := string(buf[:n])
+				// Only capture REAL errors, not verbose output
+				if strings.Contains(chunk, "ERROR:") || strings.Contains(chunk, "FATAL:") || strings.Contains(chunk, "error:") {
+					lastError = strings.TrimSpace(chunk)
+					errorCount++
+					if errorCount <= maxErrors {
+						e.log.Warn("Restore stderr", "output", chunk)
+					}
 				}
+				// Note: --verbose output is discarded to prevent OOM
+			}
+			if err != nil {
+				break
 			}
-			// Note: --verbose output is discarded to prevent OOM
-		}
-		if err != nil {
-			break
 		}
+	}()
+
+	// Wait for command with proper context handling
+	cmdDone := make(chan error, 1)
+	go func() {
+		cmdDone <- cmd.Wait()
+	}()
+
+	var cmdErr error
+	select {
+	case cmdErr = <-cmdDone:
+		// Command completed (success or failure)
+	case <-ctx.Done():
+		// Context cancelled - kill process
+		e.log.Warn("Restore with decompression cancelled - killing process")
+		cmd.Process.Kill()
+		<-cmdDone
+		cmdErr = ctx.Err()
 	}
 
-	if err := cmd.Wait(); err != nil {
+	// Wait for stderr reader to finish
+	<-stderrDone
+
+	if cmdErr != nil {
 		// PostgreSQL pg_restore returns exit code 1 even for ignorable errors
 		// Check if errors are ignorable (already exists, duplicate, etc.)
 		if lastError != "" && e.isIgnorableError(lastError) {
@@ -517,18 +785,18 @@ func (e *Engine) executeRestoreWithDecompression(ctx context.Context, archivePat
 		if lastError != "" {
 			classification := checks.ClassifyError(lastError)
 			e.log.Error("Restore with decompression failed",
-				"error", err,
+				"error", cmdErr,
 				"last_stderr", lastError,
 				"error_count", errorCount,
 				"error_type", classification.Type,
 				"hint", classification.Hint,
 				"action", classification.Action)
 			return fmt.Errorf("restore failed: %w (last error: %s, total errors: %d) - %s",
-				err, lastError, errorCount, classification.Hint)
+				cmdErr, lastError, errorCount, classification.Hint)
 		}
 
-		e.log.Error("Restore with decompression failed", "error", err, "last_stderr", lastError, "error_count", errorCount)
-		return fmt.Errorf("restore failed: %w", err)
+		e.log.Error("Restore with decompression failed", "error", cmdErr, "last_stderr", lastError, "error_count", errorCount)
+		return fmt.Errorf("restore failed: %w", cmdErr)
 	}
 
 	return nil
@@ -563,7 +831,7 @@ func (e *Engine) previewRestore(archivePath, targetDB string, format ArchiveForm
 		fmt.Printf("  1. Execute: mysql %s < %s\n", targetDB, archivePath)
 	}
 
-	fmt.Println("\n⚠️  WARNING: This will restore data to the target database.")
+	fmt.Println("\n[WARN]  WARNING: This will restore data to the target database.")
 	fmt.Println("   Existing data may be overwritten or merged.")
 	fmt.Println("\nTo execute this restore, add the --confirm flag.")
 	fmt.Println(strings.Repeat("=", 60) + "\n")
@@ -571,8 +839,99 @@ func (e *Engine) previewRestore(archivePath, targetDB string, format ArchiveForm
 	return nil
 }
 
+// RestoreSingleFromCluster extracts and restores a single database from a cluster backup
+func (e *Engine) RestoreSingleFromCluster(ctx context.Context, clusterArchivePath, dbName, targetDB string, cleanFirst, createIfMissing bool) error {
+	operation := e.log.StartOperation("Single Database Restore from Cluster")
+
+	// Validate and sanitize archive path
+	validArchivePath, pathErr := security.ValidateArchivePath(clusterArchivePath)
+	if pathErr != nil {
+		operation.Fail(fmt.Sprintf("Invalid archive path: %v", pathErr))
+		return fmt.Errorf("invalid archive path: %w", pathErr)
+	}
+	clusterArchivePath = validArchivePath
+
+	// Validate archive exists
+	if _, err := os.Stat(clusterArchivePath); os.IsNotExist(err) {
+		operation.Fail("Archive not found")
+		return fmt.Errorf("archive not found: %s", clusterArchivePath)
+	}
+
+	// Verify it's a cluster archive
+	format := DetectArchiveFormat(clusterArchivePath)
+	if format != FormatClusterTarGz {
+		operation.Fail("Not a cluster archive")
+		return fmt.Errorf("not a cluster archive: %s (format: %s)", clusterArchivePath, format)
+	}
+
+	// Create temporary directory for extraction
+	workDir := e.cfg.GetEffectiveWorkDir()
+	tempDir := filepath.Join(workDir, fmt.Sprintf(".extract_%d", time.Now().Unix()))
+	if err := os.MkdirAll(tempDir, 0755); err != nil {
+		operation.Fail("Failed to create temporary directory")
+		return fmt.Errorf("failed to create temp directory: %w", err)
+	}
+	defer os.RemoveAll(tempDir)
+
+	// Extract the specific database from cluster archive
+	e.log.Info("Extracting database from cluster backup", "database", dbName, "cluster", filepath.Base(clusterArchivePath))
+	e.progress.Start(fmt.Sprintf("Extracting '%s' from cluster backup", dbName))
+
+	extractedPath, err := ExtractDatabaseFromCluster(ctx, clusterArchivePath, dbName, tempDir, e.log, e.progress)
+	if err != nil {
+		e.progress.Fail(fmt.Sprintf("Extraction failed: %v", err))
+		operation.Fail(fmt.Sprintf("Extraction failed: %v", err))
+		return fmt.Errorf("failed to extract database: %w", err)
+	}
+
+	e.progress.Update(fmt.Sprintf("Extracted: %s", filepath.Base(extractedPath)))
+	e.log.Info("Database extracted successfully", "path", extractedPath)
+
+	// Now restore the extracted database file
+	e.progress.Update("Restoring database...")
+
+	// Create database if requested and it doesn't exist
+	if createIfMissing {
+		e.log.Info("Checking if target database exists", "database", targetDB)
+		if err := e.ensureDatabaseExists(ctx, targetDB); err != nil {
+			operation.Fail(fmt.Sprintf("Failed to create database: %v", err))
+			return fmt.Errorf("failed to create database '%s': %w", targetDB, err)
+		}
+	}
+
+	// Detect format of extracted file
+	extractedFormat := DetectArchiveFormat(extractedPath)
+	e.log.Info("Restoring extracted database", "format", extractedFormat, "target", targetDB)
+
+	// Restore based on format
+	var restoreErr error
+	switch extractedFormat {
+	case FormatPostgreSQLDump, FormatPostgreSQLDumpGz:
+		restoreErr = e.restorePostgreSQLDump(ctx, extractedPath, targetDB, extractedFormat == FormatPostgreSQLDumpGz, cleanFirst)
+	case FormatPostgreSQLSQL, FormatPostgreSQLSQLGz:
+		restoreErr = e.restorePostgreSQLSQL(ctx, extractedPath, targetDB, extractedFormat == FormatPostgreSQLSQLGz)
+	case FormatMySQLSQL, FormatMySQLSQLGz:
+		restoreErr = e.restoreMySQLSQL(ctx, extractedPath, targetDB, extractedFormat == FormatMySQLSQLGz)
+	default:
+		operation.Fail("Unsupported extracted format")
+		return fmt.Errorf("unsupported extracted format: %s", extractedFormat)
+	}
+
+	if restoreErr != nil {
+		e.progress.Fail(fmt.Sprintf("Restore failed: %v", restoreErr))
+		operation.Fail(fmt.Sprintf("Restore failed: %v", restoreErr))
+		return restoreErr
+	}
+
+	e.progress.Complete(fmt.Sprintf("Database '%s' restored from cluster backup", targetDB))
+	operation.Complete(fmt.Sprintf("Restored '%s' from cluster as '%s'", dbName, targetDB))
+	return nil
+}
+
 // RestoreCluster restores a full cluster from a tar.gz archive
-func (e *Engine) RestoreCluster(ctx context.Context, archivePath string) error {
+// If preExtractedPath is non-empty, uses that directory instead of extracting archivePath
+// This avoids double extraction when ValidateAndExtractCluster was already called
+func (e *Engine) RestoreCluster(ctx context.Context, archivePath string, preExtractedPath ...string) error {
 	operation := e.log.StartOperation("Cluster Restore")
 
 	// Validate and sanitize archive path
@@ -594,7 +953,7 @@ func (e *Engine) RestoreCluster(ctx context.Context, archivePath string) error {
 		e.log.Warn("Checksum verification failed", "error", checksumErr)
 		e.log.Warn("Continuing restore without checksum verification (use with caution)")
 	} else {
-		e.log.Info("✓ Cluster archive checksum verified successfully")
+		e.log.Info("[OK] Cluster archive checksum verified successfully")
 	}
 
 	format := DetectArchiveFormat(archivePath)
@@ -603,22 +962,32 @@ func (e *Engine) RestoreCluster(ctx context.Context, archivePath string) error {
 		return fmt.Errorf("not a cluster archive: %s (detected format: %s)", archivePath, format)
 	}
 
-	// Check disk space before starting restore
-	e.log.Info("Checking disk space for restore")
-	archiveInfo, err := os.Stat(archivePath)
-	if err == nil {
-		spaceCheck := checks.CheckDiskSpaceForRestore(e.cfg.BackupDir, archiveInfo.Size())
+	// Check if we have a pre-extracted directory (optimization to avoid double extraction)
+	// This check must happen BEFORE disk space checks to avoid false failures
+	usingPreExtracted := len(preExtractedPath) > 0 && preExtractedPath[0] != ""
 
-		if spaceCheck.Critical {
-			operation.Fail("Insufficient disk space")
-			return fmt.Errorf("insufficient disk space for restore: %.1f%% used - need at least 4x archive size", spaceCheck.UsedPercent)
-		}
+	// Check disk space before starting restore (skip if using pre-extracted directory)
+	var archiveInfo os.FileInfo
+	var err error
+	if !usingPreExtracted {
+		e.log.Info("Checking disk space for restore")
+		archiveInfo, err = os.Stat(archivePath)
+		if err == nil {
+			spaceCheck := checks.CheckDiskSpaceForRestore(e.cfg.BackupDir, archiveInfo.Size())
 
-		if spaceCheck.Warning {
-			e.log.Warn("Low disk space - restore may fail",
-				"available_gb", float64(spaceCheck.AvailableBytes)/(1024*1024*1024),
-				"used_percent", spaceCheck.UsedPercent)
+			if spaceCheck.Critical {
+				operation.Fail("Insufficient disk space")
+				return fmt.Errorf("insufficient disk space for restore: %.1f%% used - need at least 4x archive size", spaceCheck.UsedPercent)
+			}
+
+			if spaceCheck.Warning {
+				e.log.Warn("Low disk space - restore may fail",
+					"available_gb", float64(spaceCheck.AvailableBytes)/(1024*1024*1024),
+					"used_percent", spaceCheck.UsedPercent)
+			}
 		}
+	} else {
+		e.log.Info("Skipping disk space check (using pre-extracted directory)")
 	}
 
 	if e.dryRun {
@@ -628,19 +997,59 @@ func (e *Engine) RestoreCluster(ctx context.Context, archivePath string) error {
 
 	e.progress.Start(fmt.Sprintf("Restoring cluster from %s", filepath.Base(archivePath)))
 
-	// Create temporary extraction directory
-	tempDir := filepath.Join(e.cfg.BackupDir, fmt.Sprintf(".restore_%d", time.Now().Unix()))
-	if err := os.MkdirAll(tempDir, 0755); err != nil {
-		operation.Fail("Failed to create temporary directory")
-		return fmt.Errorf("failed to create temp directory: %w", err)
-	}
-	defer os.RemoveAll(tempDir)
+	// Create temporary extraction directory in configured WorkDir
+	workDir := e.cfg.GetEffectiveWorkDir()
+	tempDir := filepath.Join(workDir, fmt.Sprintf(".restore_%d", time.Now().Unix()))
 
-	// Extract archive
-	e.log.Info("Extracting cluster archive", "archive", archivePath, "tempDir", tempDir)
-	if err := e.extractArchive(ctx, archivePath, tempDir); err != nil {
-		operation.Fail("Archive extraction failed")
-		return fmt.Errorf("failed to extract archive: %w", err)
+	// Handle pre-extracted directory or extract archive
+	if usingPreExtracted {
+		tempDir = preExtractedPath[0]
+		// Note: Caller handles cleanup of pre-extracted directory
+		e.log.Info("Using pre-extracted cluster directory",
+			"path", tempDir,
+			"optimization", "skipping duplicate extraction")
+	} else {
+		// Check disk space for extraction (need ~3x archive size: compressed + extracted + working space)
+		if archiveInfo != nil {
+			requiredBytes := uint64(archiveInfo.Size()) * 3
+			extractionCheck := checks.CheckDiskSpace(workDir)
+			if extractionCheck.AvailableBytes < requiredBytes {
+				operation.Fail("Insufficient disk space for extraction")
+				return fmt.Errorf("insufficient disk space for extraction in %s: need %.1f GB, have %.1f GB (archive size: %.1f GB × 3)",
+					workDir,
+					float64(requiredBytes)/(1024*1024*1024),
+					float64(extractionCheck.AvailableBytes)/(1024*1024*1024),
+					float64(archiveInfo.Size())/(1024*1024*1024))
+			}
+			e.log.Info("Disk space check for extraction passed",
+				"workdir", workDir,
+				"required_gb", float64(requiredBytes)/(1024*1024*1024),
+				"available_gb", float64(extractionCheck.AvailableBytes)/(1024*1024*1024))
+		}
+
+		// Need to extract archive ourselves
+		if err := os.MkdirAll(tempDir, 0755); err != nil {
+			operation.Fail("Failed to create temporary directory")
+			return fmt.Errorf("failed to create temp directory in %s: %w", workDir, err)
+		}
+		defer os.RemoveAll(tempDir)
+
+		// Extract archive
+		e.log.Info("Extracting cluster archive", "archive", archivePath, "tempDir", tempDir)
+		if err := e.extractArchive(ctx, archivePath, tempDir); err != nil {
+			operation.Fail("Archive extraction failed")
+			return fmt.Errorf("failed to extract archive: %w", err)
+		}
+
+		// Check context validity after extraction (debugging context cancellation issues)
+		if ctx.Err() != nil {
+			e.log.Error("Context cancelled after extraction - this should not happen",
+				"context_error", ctx.Err(),
+				"extraction_completed", true)
+			operation.Fail("Context cancelled unexpectedly")
+			return fmt.Errorf("context cancelled after extraction completed: %w", ctx.Err())
+		}
+		e.log.Info("Extraction completed, context still valid")
 	}
 
 	// Check if user has superuser privileges (required for ownership restoration)
@@ -653,7 +1062,7 @@ func (e *Engine) RestoreCluster(ctx context.Context, archivePath string) error {
 
 	if !isSuperuser {
 		e.log.Warn("Current user is not a superuser - database ownership may not be fully restored")
-		e.progress.Update("⚠️  Warning: Non-superuser - ownership restoration limited")
+		e.progress.Update("[WARN]  Warning: Non-superuser - ownership restoration limited")
 		time.Sleep(2 * time.Second) // Give user time to see warning
 	} else {
 		e.log.Info("Superuser privileges confirmed - full ownership restoration enabled")
@@ -726,7 +1135,7 @@ func (e *Engine) RestoreCluster(ctx context.Context, archivePath string) error {
 			}
 		} else if strings.HasSuffix(dumpFile, ".dump") {
 			// Validate custom format dumps using pg_restore --list
-			cmd := exec.Command("pg_restore", "--list", dumpFile)
+			cmd := exec.CommandContext(ctx, "pg_restore", "--list", dumpFile)
 			output, err := cmd.CombinedOutput()
 			if err != nil {
 				dbName := strings.TrimSuffix(entry.Name(), ".dump")
@@ -752,20 +1161,154 @@ func (e *Engine) RestoreCluster(ctx context.Context, archivePath string) error {
 	if len(corruptedDumps) > 0 {
 		operation.Fail("Corrupted dump files detected")
 		e.progress.Fail(fmt.Sprintf("Found %d corrupted dump files - restore aborted", len(corruptedDumps)))
-		return fmt.Errorf("pre-validation failed: %d corrupted dump files detected:\n  %s\n\nThe backup archive appears to be damaged. You need to restore from a different backup.",
-			len(corruptedDumps), strings.Join(corruptedDumps, "\n  "))
+		return fmt.Errorf("pre-validation failed: %d corrupted dump files detected: %s - the backup archive appears to be damaged, restore from a different backup",
+			len(corruptedDumps), strings.Join(corruptedDumps, ", "))
 	}
 	e.log.Info("All dump files passed validation")
 
-	var failedDBs []string
+	// Run comprehensive preflight checks (Linux system + PostgreSQL + Archive analysis)
+	preflight, preflightErr := e.RunPreflightChecks(ctx, dumpsDir, entries)
+	if preflightErr != nil {
+		e.log.Warn("Preflight checks failed", "error", preflightErr)
+	}
+
+	// 🛡️ LARGE DATABASE GUARD - Bulletproof protection for large database restores
+	e.progress.Update("Analyzing database characteristics...")
+	guard := NewLargeDBGuard(e.cfg, e.log)
+
+	// Build list of dump files for analysis
+	var dumpFilePaths []string
+	for _, entry := range entries {
+		if !entry.IsDir() {
+			dumpFilePaths = append(dumpFilePaths, filepath.Join(dumpsDir, entry.Name()))
+		}
+	}
+
+	// Determine optimal restore strategy
+	strategy := guard.DetermineStrategy(ctx, archivePath, dumpFilePaths)
+
+	// Apply strategy (override config if needed)
+	if strategy.UseConservative {
+		guard.ApplyStrategy(strategy, e.cfg)
+		guard.WarnUser(strategy, e.silentMode)
+	}
+
+	// Calculate optimal lock boost based on BLOB count
+	lockBoostValue := 2048 // Default
+	if preflight != nil && preflight.Archive.RecommendedLockBoost > 0 {
+		lockBoostValue = preflight.Archive.RecommendedLockBoost
+	}
+
+	// AUTO-TUNE: Boost PostgreSQL settings for large restores
+	e.progress.Update("Tuning PostgreSQL for large restore...")
+	
+	if e.cfg.DebugLocks {
+		e.log.Info("🔍 [LOCK-DEBUG] Attempting to boost PostgreSQL lock settings",
+			"target_max_locks", lockBoostValue,
+			"conservative_mode", strategy.UseConservative)
+	}
+	
+	originalSettings, tuneErr := e.boostPostgreSQLSettings(ctx, lockBoostValue)
+	if tuneErr != nil {
+		e.log.Error("Could not boost PostgreSQL settings", "error", tuneErr)
+		
+		if e.cfg.DebugLocks {
+			e.log.Error("🔍 [LOCK-DEBUG] Lock boost attempt FAILED",
+				"error", tuneErr,
+				"phase", "boostPostgreSQLSettings")
+		}
+		
+		operation.Fail("PostgreSQL tuning failed")
+		return fmt.Errorf("failed to boost PostgreSQL settings: %w", tuneErr)
+	}
+	
+	if e.cfg.DebugLocks {
+		e.log.Info("🔍 [LOCK-DEBUG] Lock boost function returned",
+			"original_max_locks", originalSettings.MaxLocks,
+			"target_max_locks", lockBoostValue,
+			"boost_successful", originalSettings.MaxLocks >= lockBoostValue)
+	}
+	
+	// CRITICAL: Verify locks were actually increased
+	// Even in conservative mode (--jobs=1), a single massive database can exhaust locks
+	// If boost failed (couldn't restart PostgreSQL), we MUST abort
+	if originalSettings.MaxLocks < lockBoostValue {
+		e.log.Error("PostgreSQL lock boost FAILED - restart required but not possible",
+			"current_locks", originalSettings.MaxLocks,
+			"required_locks", lockBoostValue,
+			"conservative_mode", strategy.UseConservative,
+			"note", "Even single-threaded restore can fail with massive databases")
+		
+		if e.cfg.DebugLocks {
+			e.log.Error("🔍 [LOCK-DEBUG] CRITICAL: Lock verification FAILED",
+				"actual_locks", originalSettings.MaxLocks,
+				"required_locks", lockBoostValue,
+				"delta", lockBoostValue-originalSettings.MaxLocks,
+				"verdict", "ABORT RESTORE")
+		}
+		
+		operation.Fail(fmt.Sprintf("PostgreSQL restart required: max_locks_per_transaction must be %d+ (current: %d)", lockBoostValue, originalSettings.MaxLocks))
+		
+		// Provide clear instructions
+		e.log.Error("=" + strings.Repeat("=", 70))
+		e.log.Error("RESTORE ABORTED - Action Required:")
+		e.log.Error("1. ALTER SYSTEM has saved max_locks_per_transaction=%d to postgresql.auto.conf", lockBoostValue)
+		e.log.Error("2. Restart PostgreSQL to activate the new setting:")
+		e.log.Error("   sudo systemctl restart postgresql")
+		e.log.Error("3. Retry the restore - it will then complete successfully")
+		e.log.Error("=" + strings.Repeat("=", 70))
+		
+		return fmt.Errorf("restore aborted: max_locks_per_transaction=%d is insufficient (need %d+) - PostgreSQL restart required to activate ALTER SYSTEM change", 
+			originalSettings.MaxLocks, lockBoostValue)
+	}
+	
+	e.log.Info("PostgreSQL tuning verified - locks sufficient for restore",
+		"max_locks_per_transaction", originalSettings.MaxLocks,
+		"target_locks", lockBoostValue,
+		"maintenance_work_mem", "2GB",
+		"conservative_mode", strategy.UseConservative)
+	
+	if e.cfg.DebugLocks {
+		e.log.Info("🔍 [LOCK-DEBUG] Lock verification PASSED",
+			"actual_locks", originalSettings.MaxLocks,
+			"required_locks", lockBoostValue,
+			"verdict", "PROCEED WITH RESTORE")
+	}
+		
+	// Ensure we reset settings when done (even on failure)
+	defer func() {
+		if resetErr := e.resetPostgreSQLSettings(ctx, originalSettings); resetErr != nil {
+			e.log.Warn("Could not reset PostgreSQL settings", "error", resetErr)
+		} else {
+			e.log.Info("Reset PostgreSQL settings to original values")
+		}
+	}()
+
+	var restoreErrors *multierror.Error
+	var restoreErrorsMu sync.Mutex
 	totalDBs := 0
 
-	// Count total databases
+	// Count total databases and calculate total bytes for weighted progress
+	var totalBytes int64
+	dbSizes := make(map[string]int64) // Map database name to dump file size
 	for _, entry := range entries {
 		if !entry.IsDir() {
 			totalDBs++
+			dumpFile := filepath.Join(dumpsDir, entry.Name())
+			if info, err := os.Stat(dumpFile); err == nil {
+				dbName := entry.Name()
+				dbName = strings.TrimSuffix(dbName, ".dump")
+				dbName = strings.TrimSuffix(dbName, ".sql.gz")
+				dbSizes[dbName] = info.Size()
+				totalBytes += info.Size()
+			}
 		}
 	}
+	e.log.Info("Calculated total restore size", "databases", totalDBs, "total_bytes", totalBytes)
+
+	// Track bytes completed for weighted progress
+	var bytesCompleted int64
+	var bytesCompletedMu sync.Mutex
 
 	// Create ETA estimator for database restores
 	estimator := progress.NewETAEstimator("Restoring cluster", totalDBs)
@@ -785,15 +1328,31 @@ func (e *Engine) RestoreCluster(ctx context.Context, archivePath string) error {
 		e.log.Warn("Large objects detected in dump files - reducing parallelism to avoid lock contention",
 			"original_parallelism", parallelism,
 			"adjusted_parallelism", 1)
-		e.progress.Update("⚠️  Large objects detected - using sequential restore to avoid lock conflicts")
+		e.progress.Update("[WARN]  Large objects detected - using sequential restore to avoid lock conflicts")
 		time.Sleep(2 * time.Second) // Give user time to see warning
 		parallelism = 1
 	}
 
 	var successCount, failCount int32
-	var failedDBsMu sync.Mutex
 	var mu sync.Mutex // Protect shared resources (progress, logger)
 
+	// CRITICAL: Check context before starting database restore loop
+	// This helps debug issues where context gets cancelled between extraction and restore
+	if ctx.Err() != nil {
+		e.log.Error("Context cancelled before database restore loop started",
+			"context_error", ctx.Err(),
+			"total_databases", totalDBs,
+			"parallelism", parallelism)
+		operation.Fail("Context cancelled before database restores could start")
+		return fmt.Errorf("context cancelled before database restore: %w", ctx.Err())
+	}
+	e.log.Info("Starting database restore loop", "databases", totalDBs, "parallelism", parallelism)
+
+	// Timing tracking for restore phase progress
+	restorePhaseStart := time.Now()
+	var completedDBTimes []time.Duration // Track duration for each completed DB restore
+	var completedDBTimesMu sync.Mutex
+
 	// Create semaphore to limit concurrency
 	semaphore := make(chan struct{}, parallelism)
 	var wg sync.WaitGroup
@@ -811,6 +1370,27 @@ func (e *Engine) RestoreCluster(ctx context.Context, archivePath string) error {
 			defer wg.Done()
 			defer func() { <-semaphore }() // Release
 
+			// Panic recovery - prevent one database failure from crashing entire cluster restore
+			defer func() {
+				if r := recover(); r != nil {
+					e.log.Error("Panic in database restore goroutine", "file", filename, "panic", r)
+					atomic.AddInt32(&failCount, 1)
+				}
+			}()
+
+			// Check for context cancellation before starting
+			if ctx.Err() != nil {
+				e.log.Warn("Context cancelled - skipping database restore", "file", filename)
+				atomic.AddInt32(&failCount, 1)
+				restoreErrorsMu.Lock()
+				restoreErrors = multierror.Append(restoreErrors, fmt.Errorf("%s: restore skipped (context cancelled)", strings.TrimSuffix(strings.TrimSuffix(filename, ".dump"), ".sql.gz")))
+				restoreErrorsMu.Unlock()
+				return
+			}
+
+			// Track timing for this database restore
+			dbRestoreStart := time.Now()
+
 			// Update estimator progress (thread-safe)
 			mu.Lock()
 			estimator.UpdateProgress(idx)
@@ -823,10 +1403,26 @@ func (e *Engine) RestoreCluster(ctx context.Context, archivePath string) error {
 
 			dbProgress := 15 + int(float64(idx)/float64(totalDBs)*85.0)
 
+			// Calculate average time per DB and report progress with timing
+			completedDBTimesMu.Lock()
+			var avgPerDB time.Duration
+			if len(completedDBTimes) > 0 {
+				var totalDuration time.Duration
+				for _, d := range completedDBTimes {
+					totalDuration += d
+				}
+				avgPerDB = totalDuration / time.Duration(len(completedDBTimes))
+			}
+			phaseElapsed := time.Since(restorePhaseStart)
+			completedDBTimesMu.Unlock()
+
 			mu.Lock()
 			statusMsg := fmt.Sprintf("Restoring database %s (%d/%d)", dbName, idx+1, totalDBs)
 			e.progress.Update(statusMsg)
 			e.log.Info("Restoring database", "name", dbName, "file", dumpFile, "progress", dbProgress)
+			// Report database progress for TUI (both callbacks)
+			e.reportDatabaseProgress(idx, totalDBs, dbName)
+			e.reportDatabaseProgressWithTiming(idx, totalDBs, dbName, phaseElapsed, avgPerDB)
 			mu.Unlock()
 
 			// STEP 1: Drop existing database completely (clean slate)
@@ -838,9 +1434,9 @@ func (e *Engine) RestoreCluster(ctx context.Context, archivePath string) error {
 			// STEP 2: Create fresh database
 			if err := e.ensureDatabaseExists(ctx, dbName); err != nil {
 				e.log.Error("Failed to create database", "name", dbName, "error", err)
-				failedDBsMu.Lock()
-				failedDBs = append(failedDBs, fmt.Sprintf("%s: failed to create database: %v", dbName, err))
-				failedDBsMu.Unlock()
+				restoreErrorsMu.Lock()
+				restoreErrors = multierror.Append(restoreErrors, fmt.Errorf("%s: failed to create database: %w", dbName, err))
+				restoreErrorsMu.Unlock()
 				atomic.AddInt32(&failCount, 1)
 				return
 			}
@@ -849,6 +1445,25 @@ func (e *Engine) RestoreCluster(ctx context.Context, archivePath string) error {
 			preserveOwnership := isSuperuser
 			isCompressedSQL := strings.HasSuffix(dumpFile, ".sql.gz")
 
+			// Start heartbeat ticker to show progress during long-running restore
+			heartbeatCtx, cancelHeartbeat := context.WithCancel(ctx)
+			heartbeatTicker := time.NewTicker(5 * time.Second)
+			go func() {
+				for {
+					select {
+					case <-heartbeatTicker.C:
+						elapsed := time.Since(dbRestoreStart)
+						mu.Lock()
+						statusMsg := fmt.Sprintf("Restoring %s (%d/%d) - elapsed: %s",
+							dbName, idx+1, totalDBs, formatDuration(elapsed))
+						e.progress.Update(statusMsg)
+						mu.Unlock()
+					case <-heartbeatCtx.Done():
+						return
+					}
+				}
+			}()
+
 			var restoreErr error
 			if isCompressedSQL {
 				mu.Lock()
@@ -862,6 +1477,10 @@ func (e *Engine) RestoreCluster(ctx context.Context, archivePath string) error {
 				restoreErr = e.restorePostgreSQLDumpWithOwnership(ctx, dumpFile, dbName, false, preserveOwnership)
 			}
 
+			// Stop heartbeat ticker
+			heartbeatTicker.Stop()
+			cancelHeartbeat()
+
 			if restoreErr != nil {
 				mu.Lock()
 				e.log.Error("Failed to restore database", "name", dbName, "file", dumpFile, "error", restoreErr)
@@ -883,15 +1502,35 @@ func (e *Engine) RestoreCluster(ctx context.Context, archivePath string) error {
 					mu.Unlock()
 				}
 
-				failedDBsMu.Lock()
+				restoreErrorsMu.Lock()
 				// Include more context in the error message
-				failedDBs = append(failedDBs, fmt.Sprintf("%s: restore failed: %v", dbName, restoreErr))
-				failedDBsMu.Unlock()
+				restoreErrors = multierror.Append(restoreErrors, fmt.Errorf("%s: restore failed: %w", dbName, restoreErr))
+				restoreErrorsMu.Unlock()
 				atomic.AddInt32(&failCount, 1)
 				return
 			}
 
+			// Track completed database restore duration for ETA calculation
+			dbRestoreDuration := time.Since(dbRestoreStart)
+			completedDBTimesMu.Lock()
+			completedDBTimes = append(completedDBTimes, dbRestoreDuration)
+			completedDBTimesMu.Unlock()
+
+			// Update bytes completed for weighted progress
+			dbSize := dbSizes[dbName]
+			bytesCompletedMu.Lock()
+			bytesCompleted += dbSize
+			currentBytesCompleted := bytesCompleted
+			currentSuccessCount := int(atomic.LoadInt32(&successCount)) + 1 // +1 because we're about to increment
+			bytesCompletedMu.Unlock()
+
+			// Report weighted progress (bytes-based)
+			e.reportDatabaseProgressByBytes(currentBytesCompleted, totalBytes, dbName, currentSuccessCount, totalDBs)
+
 			atomic.AddInt32(&successCount, 1)
+
+			// Small delay to ensure PostgreSQL fully closes connections before next restore
+			time.Sleep(100 * time.Millisecond)
 		}(dbIndex, entry.Name())
 
 		dbIndex++
@@ -903,8 +1542,47 @@ func (e *Engine) RestoreCluster(ctx context.Context, archivePath string) error {
 	successCountFinal := int(atomic.LoadInt32(&successCount))
 	failCountFinal := int(atomic.LoadInt32(&failCount))
 
+	// SANITY CHECK: Verify all databases were accounted for
+	// This catches any goroutine that exited without updating counters
+	accountedFor := successCountFinal + failCountFinal
+	if accountedFor != totalDBs {
+		missingCount := totalDBs - accountedFor
+		e.log.Error("INTERNAL ERROR: Some database restore goroutines did not report status",
+			"expected", totalDBs,
+			"success", successCountFinal,
+			"failed", failCountFinal,
+			"unaccounted", missingCount)
+
+		// Treat unaccounted databases as failures
+		failCountFinal += missingCount
+		restoreErrorsMu.Lock()
+		restoreErrors = multierror.Append(restoreErrors, fmt.Errorf("%d database(s) did not complete (possible goroutine crash or deadlock)", missingCount))
+		restoreErrorsMu.Unlock()
+	}
+
+	// CRITICAL: Check if no databases were restored at all
+	if successCountFinal == 0 {
+		e.progress.Fail(fmt.Sprintf("Cluster restore FAILED: 0 of %d databases restored", totalDBs))
+		operation.Fail("No databases were restored")
+
+		if failCountFinal > 0 && restoreErrors != nil {
+			return fmt.Errorf("cluster restore failed: all %d database(s) failed:\n%s", failCountFinal, restoreErrors.Error())
+		}
+		return fmt.Errorf("cluster restore failed: no databases were restored (0 of %d total). Check PostgreSQL logs for details", totalDBs)
+	}
+
 	if failCountFinal > 0 {
-		failedList := strings.Join(failedDBs, "\n  ")
+		// Format multi-error with detailed output
+		restoreErrors.ErrorFormat = func(errs []error) string {
+			if len(errs) == 1 {
+				return errs[0].Error()
+			}
+			points := make([]string, len(errs))
+			for i, err := range errs {
+				points[i] = fmt.Sprintf("  • %s", err.Error())
+			}
+			return fmt.Sprintf("%d database(s) failed:\n%s", len(errs), strings.Join(points, "\n"))
+		}
 
 		// Log summary
 		e.log.Info("Cluster restore completed with failures",
@@ -915,7 +1593,7 @@ func (e *Engine) RestoreCluster(ctx context.Context, archivePath string) error {
 		e.progress.Fail(fmt.Sprintf("Cluster restore: %d succeeded, %d failed out of %d total", successCountFinal, failCountFinal, totalDBs))
 		operation.Complete(fmt.Sprintf("Partial restore: %d/%d databases succeeded", successCountFinal, totalDBs))
 
-		return fmt.Errorf("cluster restore completed with %d failures:\n  %s", failCountFinal, failedList)
+		return fmt.Errorf("cluster restore completed with %d failures:\n%s", failCountFinal, restoreErrors.Error())
 	}
 
 	e.progress.Complete(fmt.Sprintf("Cluster restored successfully: %d databases", successCountFinal))
@@ -923,8 +1601,163 @@ func (e *Engine) RestoreCluster(ctx context.Context, archivePath string) error {
 	return nil
 }
 
-// extractArchive extracts a tar.gz archive
+// extractArchive extracts a tar.gz archive with progress reporting
 func (e *Engine) extractArchive(ctx context.Context, archivePath, destDir string) error {
+	// If progress callback is set, use Go's archive/tar for progress tracking
+	if e.progressCallback != nil {
+		return e.extractArchiveWithProgress(ctx, archivePath, destDir)
+	}
+
+	// Otherwise use fast shell tar (no progress)
+	return e.extractArchiveShell(ctx, archivePath, destDir)
+}
+
+// extractArchiveWithProgress extracts using Go's archive/tar with detailed progress reporting
+func (e *Engine) extractArchiveWithProgress(ctx context.Context, archivePath, destDir string) error {
+	// Get archive size for progress calculation
+	archiveInfo, err := os.Stat(archivePath)
+	if err != nil {
+		return fmt.Errorf("failed to stat archive: %w", err)
+	}
+	totalSize := archiveInfo.Size()
+
+	// Open the archive file
+	file, err := os.Open(archivePath)
+	if err != nil {
+		return fmt.Errorf("failed to open archive: %w", err)
+	}
+	defer file.Close()
+
+	// Wrap with progress reader
+	progressReader := &progressReader{
+		reader:    file,
+		totalSize: totalSize,
+		callback:  e.progressCallback,
+		desc:      "Extracting archive",
+	}
+
+	// Create gzip reader
+	gzReader, err := gzip.NewReader(progressReader)
+	if err != nil {
+		return fmt.Errorf("failed to create gzip reader: %w", err)
+	}
+	defer gzReader.Close()
+
+	// Create tar reader
+	tarReader := tar.NewReader(gzReader)
+
+	// Extract files
+	for {
+		select {
+		case <-ctx.Done():
+			return ctx.Err()
+		default:
+		}
+
+		header, err := tarReader.Next()
+		if err == io.EOF {
+			break // End of archive
+		}
+		if err != nil {
+			return fmt.Errorf("failed to read tar header: %w", err)
+		}
+
+		// Sanitize and validate path
+		targetPath := filepath.Join(destDir, header.Name)
+
+		// Security check: ensure path is within destDir (prevent path traversal)
+		if !strings.HasPrefix(filepath.Clean(targetPath), filepath.Clean(destDir)) {
+			e.log.Warn("Skipping potentially malicious path in archive", "path", header.Name)
+			continue
+		}
+
+		switch header.Typeflag {
+		case tar.TypeDir:
+			if err := os.MkdirAll(targetPath, 0755); err != nil {
+				return fmt.Errorf("failed to create directory %s: %w", targetPath, err)
+			}
+		case tar.TypeReg:
+			// Ensure parent directory exists
+			if err := os.MkdirAll(filepath.Dir(targetPath), 0755); err != nil {
+				return fmt.Errorf("failed to create parent directory: %w", err)
+			}
+
+			// Create the file
+			outFile, err := os.OpenFile(targetPath, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, os.FileMode(header.Mode))
+			if err != nil {
+				return fmt.Errorf("failed to create file %s: %w", targetPath, err)
+			}
+
+			// Copy file contents
+			if _, err := io.Copy(outFile, tarReader); err != nil {
+				outFile.Close()
+				return fmt.Errorf("failed to write file %s: %w", targetPath, err)
+			}
+			outFile.Close()
+		case tar.TypeSymlink:
+			// Handle symlinks (common in some archives)
+			if err := os.Symlink(header.Linkname, targetPath); err != nil {
+				// Ignore symlink errors (may already exist or not supported)
+				e.log.Debug("Could not create symlink", "path", targetPath, "target", header.Linkname)
+			}
+		}
+	}
+
+	// Final progress update
+	e.reportProgress(totalSize, totalSize, "Extraction complete")
+	return nil
+}
+
+// progressReader wraps an io.Reader to report read progress
+type progressReader struct {
+	reader      io.Reader
+	totalSize   int64
+	bytesRead   int64
+	callback    ProgressCallback
+	desc        string
+	lastReport  time.Time
+	reportEvery time.Duration
+}
+
+func (pr *progressReader) Read(p []byte) (n int, err error) {
+	n, err = pr.reader.Read(p)
+	pr.bytesRead += int64(n)
+
+	// Throttle progress reporting to every 50ms for smoother updates
+	if pr.reportEvery == 0 {
+		pr.reportEvery = 50 * time.Millisecond
+	}
+	if time.Since(pr.lastReport) > pr.reportEvery {
+		if pr.callback != nil {
+			pr.callback(pr.bytesRead, pr.totalSize, pr.desc)
+		}
+		pr.lastReport = time.Now()
+	}
+
+	return n, err
+}
+
+// extractArchiveShell extracts using shell tar command (faster but no progress)
+func (e *Engine) extractArchiveShell(ctx context.Context, archivePath, destDir string) error {
+	// Start heartbeat ticker for extraction progress
+	extractionStart := time.Now()
+	heartbeatCtx, cancelHeartbeat := context.WithCancel(ctx)
+	heartbeatTicker := time.NewTicker(5 * time.Second)
+	defer heartbeatTicker.Stop()
+	defer cancelHeartbeat()
+
+	go func() {
+		for {
+			select {
+			case <-heartbeatTicker.C:
+				elapsed := time.Since(extractionStart)
+				e.progress.Update(fmt.Sprintf("Extracting archive... (elapsed: %s)", formatDuration(elapsed)))
+			case <-heartbeatCtx.Done():
+				return
+			}
+		}
+	}()
+
 	cmd := exec.CommandContext(ctx, "tar", "-xzf", archivePath, "-C", destDir)
 
 	// Stream stderr to avoid memory issues - tar can produce lots of output for large archives
@@ -938,21 +1771,46 @@ func (e *Engine) extractArchive(ctx context.Context, archivePath, destDir string
 	}
 
 	// Discard stderr output in chunks to prevent memory buildup
-	buf := make([]byte, 4096)
-	for {
-		_, err := stderr.Read(buf)
-		if err != nil {
-			break
+	stderrDone := make(chan struct{})
+	go func() {
+		defer close(stderrDone)
+		buf := make([]byte, 4096)
+		for {
+			_, err := stderr.Read(buf)
+			if err != nil {
+				break
+			}
 		}
+	}()
+
+	// Wait for command with proper context handling
+	cmdDone := make(chan error, 1)
+	go func() {
+		cmdDone <- cmd.Wait()
+	}()
+
+	var cmdErr error
+	select {
+	case cmdErr = <-cmdDone:
+		// Command completed
+	case <-ctx.Done():
+		e.log.Warn("Archive extraction cancelled - killing process")
+		cmd.Process.Kill()
+		<-cmdDone
+		cmdErr = ctx.Err()
 	}
 
-	if err := cmd.Wait(); err != nil {
-		return fmt.Errorf("tar extraction failed: %w", err)
+	<-stderrDone
+
+	if cmdErr != nil {
+		return fmt.Errorf("tar extraction failed: %w", cmdErr)
 	}
 	return nil
 }
 
 // restoreGlobals restores global objects (roles, tablespaces)
+// Note: psql returns 0 even when some statements fail (e.g., role already exists)
+// We track errors but only fail on FATAL errors that would prevent restore
 func (e *Engine) restoreGlobals(ctx context.Context, globalsFile string) error {
 	args := []string{
 		"-p", fmt.Sprintf("%d", e.cfg.Port),
@@ -980,25 +1838,77 @@ func (e *Engine) restoreGlobals(ctx context.Context, globalsFile string) error {
 		return fmt.Errorf("failed to start psql: %w", err)
 	}
 
-	// Read stderr in chunks
-	buf := make([]byte, 4096)
+	// Read stderr in chunks in goroutine
 	var lastError string
-	for {
-		n, err := stderr.Read(buf)
-		if n > 0 {
-			chunk := string(buf[:n])
-			if strings.Contains(chunk, "ERROR") || strings.Contains(chunk, "FATAL") {
-				lastError = chunk
-				e.log.Warn("Globals restore stderr", "output", chunk)
+	var errorCount int
+	var fatalError bool
+	stderrDone := make(chan struct{})
+	go func() {
+		defer close(stderrDone)
+		buf := make([]byte, 4096)
+		for {
+			n, err := stderr.Read(buf)
+			if n > 0 {
+				chunk := string(buf[:n])
+				// Track different error types
+				if strings.Contains(chunk, "FATAL") {
+					fatalError = true
+					lastError = chunk
+					e.log.Error("Globals restore FATAL error", "output", chunk)
+				} else if strings.Contains(chunk, "ERROR") {
+					errorCount++
+					lastError = chunk
+					// Only log first few errors to avoid spam
+					if errorCount <= 5 {
+						// Check if it's an ignorable "already exists" error
+						if strings.Contains(chunk, "already exists") {
+							e.log.Debug("Globals restore: object already exists (expected)", "output", chunk)
+						} else {
+							e.log.Warn("Globals restore error", "output", chunk)
+						}
+					}
+				}
+			}
+			if err != nil {
+				break
 			}
 		}
-		if err != nil {
-			break
-		}
+	}()
+
+	// Wait for command with proper context handling
+	cmdDone := make(chan error, 1)
+	go func() {
+		cmdDone <- cmd.Wait()
+	}()
+
+	var cmdErr error
+	select {
+	case cmdErr = <-cmdDone:
+		// Command completed
+	case <-ctx.Done():
+		e.log.Warn("Globals restore cancelled - killing process")
+		cmd.Process.Kill()
+		<-cmdDone
+		cmdErr = ctx.Err()
 	}
 
-	if err := cmd.Wait(); err != nil {
-		return fmt.Errorf("failed to restore globals: %w (last error: %s)", err, lastError)
+	<-stderrDone
+
+	// Only fail on actual command errors or FATAL PostgreSQL errors
+	// Regular ERROR messages (like "role already exists") are expected
+	if cmdErr != nil {
+		return fmt.Errorf("failed to restore globals: %w (last error: %s)", cmdErr, lastError)
+	}
+
+	// If we had FATAL errors, those are real problems
+	if fatalError {
+		return fmt.Errorf("globals restore had FATAL error: %s", lastError)
+	}
+
+	// Log summary if there were errors (but don't fail)
+	if errorCount > 0 {
+		e.log.Info("Globals restore completed with some errors (usually 'already exists' - expected)",
+			"error_count", errorCount)
 	}
 
 	return nil
@@ -1068,6 +1978,7 @@ func (e *Engine) terminateConnections(ctx context.Context, dbName string) error
 }
 
 // dropDatabaseIfExists drops a database completely (clean slate)
+// Uses PostgreSQL 13+ WITH (FORCE) option to forcefully drop even with active connections
 func (e *Engine) dropDatabaseIfExists(ctx context.Context, dbName string) error {
 	// First terminate all connections
 	if err := e.terminateConnections(ctx, dbName); err != nil {
@@ -1077,26 +1988,67 @@ func (e *Engine) dropDatabaseIfExists(ctx context.Context, dbName string) error
 	// Wait a moment for connections to terminate
 	time.Sleep(500 * time.Millisecond)
 
-	// Drop the database
-	args := []string{
+	// Try to revoke new connections (prevents race condition)
+	// This only works if we have the privilege to do so
+	revokeArgs := []string{
 		"-p", fmt.Sprintf("%d", e.cfg.Port),
 		"-U", e.cfg.User,
 		"-d", "postgres",
-		"-c", fmt.Sprintf("DROP DATABASE IF EXISTS \"%s\"", dbName),
+		"-c", fmt.Sprintf("REVOKE CONNECT ON DATABASE \"%s\" FROM PUBLIC", dbName),
 	}
-
-	// Only add -h flag if host is not localhost (to use Unix socket for peer auth)
 	if e.cfg.Host != "localhost" && e.cfg.Host != "127.0.0.1" && e.cfg.Host != "" {
-		args = append([]string{"-h", e.cfg.Host}, args...)
+		revokeArgs = append([]string{"-h", e.cfg.Host}, revokeArgs...)
+	}
+	revokeCmd := exec.CommandContext(ctx, "psql", revokeArgs...)
+	revokeCmd.Env = append(os.Environ(), fmt.Sprintf("PGPASSWORD=%s", e.cfg.Password))
+	revokeCmd.Run() // Ignore errors - database might not exist
+
+	// Terminate connections again after revoking connect privilege
+	e.terminateConnections(ctx, dbName)
+	time.Sleep(200 * time.Millisecond)
+
+	// Try DROP DATABASE WITH (FORCE) first (PostgreSQL 13+)
+	// This forcefully terminates connections and drops the database atomically
+	forceArgs := []string{
+		"-p", fmt.Sprintf("%d", e.cfg.Port),
+		"-U", e.cfg.User,
+		"-d", "postgres",
+		"-c", fmt.Sprintf("DROP DATABASE IF EXISTS \"%s\" WITH (FORCE)", dbName),
+	}
+	if e.cfg.Host != "localhost" && e.cfg.Host != "127.0.0.1" && e.cfg.Host != "" {
+		forceArgs = append([]string{"-h", e.cfg.Host}, forceArgs...)
+	}
+	forceCmd := exec.CommandContext(ctx, "psql", forceArgs...)
+	forceCmd.Env = append(os.Environ(), fmt.Sprintf("PGPASSWORD=%s", e.cfg.Password))
+
+	output, err := forceCmd.CombinedOutput()
+	if err == nil {
+		e.log.Info("Dropped existing database (with FORCE)", "name", dbName)
+		return nil
 	}
 
-	cmd := exec.CommandContext(ctx, "psql", args...)
+	// If FORCE option failed (PostgreSQL < 13), try regular drop
+	if strings.Contains(string(output), "syntax error") || strings.Contains(string(output), "WITH (FORCE)") {
+		e.log.Debug("WITH (FORCE) not supported, using standard DROP", "name", dbName)
 
-	// Always set PGPASSWORD (empty string is fine for peer/ident auth)
-	cmd.Env = append(os.Environ(), fmt.Sprintf("PGPASSWORD=%s", e.cfg.Password))
+		args := []string{
+			"-p", fmt.Sprintf("%d", e.cfg.Port),
+			"-U", e.cfg.User,
+			"-d", "postgres",
+			"-c", fmt.Sprintf("DROP DATABASE IF EXISTS \"%s\"", dbName),
+		}
+		if e.cfg.Host != "localhost" && e.cfg.Host != "127.0.0.1" && e.cfg.Host != "" {
+			args = append([]string{"-h", e.cfg.Host}, args...)
+		}
 
-	output, err := cmd.CombinedOutput()
-	if err != nil {
+		cmd := exec.CommandContext(ctx, "psql", args...)
+		cmd.Env = append(os.Environ(), fmt.Sprintf("PGPASSWORD=%s", e.cfg.Password))
+
+		output, err = cmd.CombinedOutput()
+		if err != nil {
+			return fmt.Errorf("failed to drop database '%s': %w\nOutput: %s", dbName, err, string(output))
+		}
+	} else if err != nil {
 		return fmt.Errorf("failed to drop database '%s': %w\nOutput: %s", dbName, err, string(output))
 	}
 
@@ -1139,12 +2091,14 @@ func (e *Engine) ensureMySQLDatabaseExists(ctx context.Context, dbName string) e
 }
 
 // ensurePostgresDatabaseExists checks if a PostgreSQL database exists and creates it if not
+// It attempts to extract encoding/locale from the dump file to preserve original settings
 func (e *Engine) ensurePostgresDatabaseExists(ctx context.Context, dbName string) error {
 	// Skip creation for postgres and template databases - they should already exist
 	if dbName == "postgres" || dbName == "template0" || dbName == "template1" {
 		e.log.Info("Skipping create for system database (assume exists)", "name", dbName)
 		return nil
 	}
+
 	// Build psql command with authentication
 	buildPsqlCmd := func(ctx context.Context, database, query string) *exec.Cmd {
 		args := []string{
@@ -1184,14 +2138,31 @@ func (e *Engine) ensurePostgresDatabaseExists(ctx context.Context, dbName string
 
 	// Database doesn't exist, create it
 	// IMPORTANT: Use template0 to avoid duplicate definition errors from local additions to template1
+	// Also use UTF8 encoding explicitly as it's the most common and safest choice
 	// See PostgreSQL docs: https://www.postgresql.org/docs/current/app-pgrestore.html#APP-PGRESTORE-NOTES
-	e.log.Info("Creating database from template0", "name", dbName)
+	e.log.Info("Creating database from template0 with UTF8 encoding", "name", dbName)
+
+	// Get server's default locale for LC_COLLATE and LC_CTYPE
+	// This ensures compatibility while using the correct encoding
+	localeCmd := buildPsqlCmd(ctx, "postgres", "SHOW lc_collate")
+	localeOutput, _ := localeCmd.CombinedOutput()
+	serverLocale := strings.TrimSpace(string(localeOutput))
+	if serverLocale == "" {
+		serverLocale = "en_US.UTF-8" // Fallback to common default
+	}
+
+	// Build CREATE DATABASE command with encoding and locale
+	// Using ENCODING 'UTF8' explicitly ensures the dump can be restored
+	createSQL := fmt.Sprintf(
+		"CREATE DATABASE \"%s\" WITH TEMPLATE template0 ENCODING 'UTF8' LC_COLLATE '%s' LC_CTYPE '%s'",
+		dbName, serverLocale, serverLocale,
+	)
 
 	createArgs := []string{
 		"-p", fmt.Sprintf("%d", e.cfg.Port),
 		"-U", e.cfg.User,
 		"-d", "postgres",
-		"-c", fmt.Sprintf("CREATE DATABASE \"%s\" WITH TEMPLATE template0", dbName),
+		"-c", createSQL,
 	}
 
 	// Only add -h flag if host is not localhost (to use Unix socket for peer auth)
@@ -1206,9 +2177,27 @@ func (e *Engine) ensurePostgresDatabaseExists(ctx context.Context, dbName string
 
 	output, err = createCmd.CombinedOutput()
 	if err != nil {
-		// Log the error and include the psql output in the returned error to aid debugging
-		e.log.Warn("Database creation failed", "name", dbName, "error", err, "output", string(output))
-		return fmt.Errorf("failed to create database '%s': %w (output: %s)", dbName, err, strings.TrimSpace(string(output)))
+		// If encoding/locale fails, try simpler CREATE DATABASE
+		e.log.Warn("Database creation with encoding failed, trying simple create", "name", dbName, "error", err)
+
+		simpleArgs := []string{
+			"-p", fmt.Sprintf("%d", e.cfg.Port),
+			"-U", e.cfg.User,
+			"-d", "postgres",
+			"-c", fmt.Sprintf("CREATE DATABASE \"%s\" WITH TEMPLATE template0", dbName),
+		}
+		if e.cfg.Host != "localhost" && e.cfg.Host != "127.0.0.1" && e.cfg.Host != "" {
+			simpleArgs = append([]string{"-h", e.cfg.Host}, simpleArgs...)
+		}
+
+		simpleCmd := exec.CommandContext(ctx, "psql", simpleArgs...)
+		simpleCmd.Env = append(os.Environ(), fmt.Sprintf("PGPASSWORD=%s", e.cfg.Password))
+
+		output, err = simpleCmd.CombinedOutput()
+		if err != nil {
+			e.log.Warn("Database creation failed", "name", dbName, "error", err, "output", string(output))
+			return fmt.Errorf("failed to create database '%s': %w (output: %s)", dbName, err, strings.TrimSpace(string(output)))
+		}
 	}
 
 	e.log.Info("Successfully created database from template0", "name", dbName)
@@ -1235,7 +2224,7 @@ func (e *Engine) previewClusterRestore(archivePath string) error {
 	fmt.Println("  3. Restore all databases found in archive")
 	fmt.Println("  4. Cleanup temporary files")
 
-	fmt.Println("\n⚠️  WARNING: This will restore multiple databases.")
+	fmt.Println("\n[WARN]  WARNING: This will restore multiple databases.")
 	fmt.Println("   Existing databases may be overwritten or merged.")
 	fmt.Println("\nTo execute this restore, add the --confirm flag.")
 	fmt.Println(strings.Repeat("=", 60) + "\n")
@@ -1262,7 +2251,8 @@ func (e *Engine) detectLargeObjectsInDumps(dumpsDir string, entries []os.DirEntr
 		}
 
 		// Use pg_restore -l to list contents (fast, doesn't restore data)
-		ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+		// 2 minutes for large dumps with many objects
+		ctx, cancel := context.WithTimeout(context.Background(), 2*time.Minute)
 		defer cancel()
 
 		cmd := exec.CommandContext(ctx, "pg_restore", "-l", dumpFile)
@@ -1350,6 +2340,25 @@ func FormatBytes(bytes int64) string {
 	return fmt.Sprintf("%.1f %cB", float64(bytes)/float64(div), "KMGTPE"[exp])
 }
 
+// formatDuration formats a duration to human readable format (e.g., "3m 45s", "1h 23m", "45s")
+func formatDuration(d time.Duration) string {
+	if d < time.Second {
+		return "0s"
+	}
+
+	hours := int(d.Hours())
+	minutes := int(d.Minutes()) % 60
+	seconds := int(d.Seconds()) % 60
+
+	if hours > 0 {
+		return fmt.Sprintf("%dh %dm", hours, minutes)
+	}
+	if minutes > 0 {
+		return fmt.Sprintf("%dm %ds", minutes, seconds)
+	}
+	return fmt.Sprintf("%ds", seconds)
+}
+
 // quickValidateSQLDump performs a fast validation of SQL dump files
 // by checking for truncated COPY blocks. This catches corrupted dumps
 // BEFORE attempting a full restore (which could waste 49+ minutes).
@@ -1394,3 +2403,406 @@ func (e *Engine) quickValidateSQLDump(archivePath string, compressed bool) error
 	e.log.Debug("SQL dump validation passed", "path", archivePath)
 	return nil
 }
+
+// boostLockCapacity checks and reports on max_locks_per_transaction capacity.
+// IMPORTANT: max_locks_per_transaction requires a PostgreSQL RESTART to change!
+// This function now calculates total lock capacity based on max_connections and
+// warns the user if capacity is insufficient for the restore.
+func (e *Engine) boostLockCapacity(ctx context.Context) (int, error) {
+	// Connect to PostgreSQL to run system commands
+	connStr := fmt.Sprintf("host=%s port=%d user=%s password=%s dbname=postgres sslmode=disable",
+		e.cfg.Host, e.cfg.Port, e.cfg.User, e.cfg.Password)
+
+	// For localhost, use Unix socket
+	if e.cfg.Host == "localhost" || e.cfg.Host == "" {
+		connStr = fmt.Sprintf("user=%s password=%s dbname=postgres sslmode=disable",
+			e.cfg.User, e.cfg.Password)
+	}
+
+	db, err := sql.Open("pgx", connStr)
+	if err != nil {
+		return 0, fmt.Errorf("failed to connect: %w", err)
+	}
+	defer db.Close()
+
+	// Get current max_locks_per_transaction
+	var currentValue int
+	err = db.QueryRowContext(ctx, "SHOW max_locks_per_transaction").Scan(&currentValue)
+	if err != nil {
+		// Try parsing as string (some versions return string)
+		var currentValueStr string
+		err = db.QueryRowContext(ctx, "SHOW max_locks_per_transaction").Scan(&currentValueStr)
+		if err != nil {
+			return 0, fmt.Errorf("failed to get current max_locks_per_transaction: %w", err)
+		}
+		fmt.Sscanf(currentValueStr, "%d", &currentValue)
+	}
+
+	// Get max_connections to calculate total lock capacity
+	var maxConns int
+	if err := db.QueryRowContext(ctx, "SHOW max_connections").Scan(&maxConns); err != nil {
+		maxConns = 100 // default
+	}
+
+	// Get max_prepared_transactions
+	var maxPreparedTxns int
+	if err := db.QueryRowContext(ctx, "SHOW max_prepared_transactions").Scan(&maxPreparedTxns); err != nil {
+		maxPreparedTxns = 0
+	}
+
+	// Calculate total lock table capacity:
+	// Total locks = max_locks_per_transaction × (max_connections + max_prepared_transactions)
+	totalLockCapacity := currentValue * (maxConns + maxPreparedTxns)
+
+	e.log.Info("PostgreSQL lock table capacity",
+		"max_locks_per_transaction", currentValue,
+		"max_connections", maxConns,
+		"max_prepared_transactions", maxPreparedTxns,
+		"total_lock_capacity", totalLockCapacity)
+
+	// Minimum recommended total capacity for BLOB-heavy restores: 200,000 locks
+	minRecommendedCapacity := 200000
+	if totalLockCapacity < minRecommendedCapacity {
+		recommendedMaxLocks := minRecommendedCapacity / (maxConns + maxPreparedTxns)
+		if recommendedMaxLocks < 4096 {
+			recommendedMaxLocks = 4096
+		}
+
+		e.log.Warn("Lock table capacity may be insufficient for BLOB-heavy restores",
+			"current_total_capacity", totalLockCapacity,
+			"recommended_capacity", minRecommendedCapacity,
+			"current_max_locks", currentValue,
+			"recommended_max_locks", recommendedMaxLocks,
+			"note", "max_locks_per_transaction requires PostgreSQL RESTART to change")
+
+		// Write suggested fix to ALTER SYSTEM but warn about restart
+		_, err = db.ExecContext(ctx, fmt.Sprintf("ALTER SYSTEM SET max_locks_per_transaction = %d", recommendedMaxLocks))
+		if err != nil {
+			e.log.Warn("Could not set recommended max_locks_per_transaction (needs superuser)", "error", err)
+		} else {
+			e.log.Warn("Wrote recommended max_locks_per_transaction to postgresql.auto.conf",
+				"value", recommendedMaxLocks,
+				"action", "RESTART PostgreSQL to apply: sudo systemctl restart postgresql")
+		}
+	} else {
+		e.log.Info("Lock table capacity is sufficient",
+			"total_capacity", totalLockCapacity,
+			"max_locks_per_transaction", currentValue)
+	}
+
+	return currentValue, nil
+}
+
+// resetLockCapacity restores the original max_locks_per_transaction value
+func (e *Engine) resetLockCapacity(ctx context.Context, originalValue int) error {
+	connStr := fmt.Sprintf("host=%s port=%d user=%s password=%s dbname=postgres sslmode=disable",
+		e.cfg.Host, e.cfg.Port, e.cfg.User, e.cfg.Password)
+
+	if e.cfg.Host == "localhost" || e.cfg.Host == "" {
+		connStr = fmt.Sprintf("user=%s password=%s dbname=postgres sslmode=disable",
+			e.cfg.User, e.cfg.Password)
+	}
+
+	db, err := sql.Open("pgx", connStr)
+	if err != nil {
+		return fmt.Errorf("failed to connect: %w", err)
+	}
+	defer db.Close()
+
+	// Reset to original value (or use RESET to go back to default)
+	if originalValue == 64 { // Default value
+		_, err = db.ExecContext(ctx, "ALTER SYSTEM RESET max_locks_per_transaction")
+	} else {
+		_, err = db.ExecContext(ctx, fmt.Sprintf("ALTER SYSTEM SET max_locks_per_transaction = %d", originalValue))
+	}
+	if err != nil {
+		return fmt.Errorf("failed to reset max_locks_per_transaction: %w", err)
+	}
+
+	// Reload config
+	_, err = db.ExecContext(ctx, "SELECT pg_reload_conf()")
+	if err != nil {
+		return fmt.Errorf("failed to reload config: %w", err)
+	}
+
+	return nil
+}
+
+// OriginalSettings stores PostgreSQL settings to restore after operation
+type OriginalSettings struct {
+	MaxLocks           int
+	MaintenanceWorkMem string
+}
+
+// boostPostgreSQLSettings boosts multiple PostgreSQL settings for large restores
+// NOTE: max_locks_per_transaction requires a PostgreSQL RESTART to take effect!
+// maintenance_work_mem can be changed with pg_reload_conf().
+func (e *Engine) boostPostgreSQLSettings(ctx context.Context, lockBoostValue int) (*OriginalSettings, error) {
+	if e.cfg.DebugLocks {
+		e.log.Info("🔍 [LOCK-DEBUG] boostPostgreSQLSettings: Starting lock boost procedure",
+			"target_lock_value", lockBoostValue)
+	}
+	
+	connStr := e.buildConnString()
+	db, err := sql.Open("pgx", connStr)
+	if err != nil {
+		if e.cfg.DebugLocks {
+			e.log.Error("🔍 [LOCK-DEBUG] Failed to connect to PostgreSQL",
+				"error", err)
+		}
+		return nil, fmt.Errorf("failed to connect: %w", err)
+	}
+	defer db.Close()
+
+	original := &OriginalSettings{}
+
+	// Get current max_locks_per_transaction
+	var maxLocksStr string
+	if err := db.QueryRowContext(ctx, "SHOW max_locks_per_transaction").Scan(&maxLocksStr); err == nil {
+		original.MaxLocks, _ = strconv.Atoi(maxLocksStr)
+	}
+	
+	if e.cfg.DebugLocks {
+		e.log.Info("🔍 [LOCK-DEBUG] Current PostgreSQL lock configuration",
+			"current_max_locks", original.MaxLocks,
+			"target_max_locks", lockBoostValue,
+			"boost_required", original.MaxLocks < lockBoostValue)
+	}
+
+	// Get current maintenance_work_mem
+	db.QueryRowContext(ctx, "SHOW maintenance_work_mem").Scan(&original.MaintenanceWorkMem)
+
+	// CRITICAL: max_locks_per_transaction requires a PostgreSQL RESTART!
+	// pg_reload_conf() is NOT sufficient for this parameter.
+	needsRestart := false
+	if original.MaxLocks < lockBoostValue {
+		if e.cfg.DebugLocks {
+			e.log.Info("🔍 [LOCK-DEBUG] Executing ALTER SYSTEM to boost locks",
+				"from", original.MaxLocks,
+				"to", lockBoostValue)
+		}
+		
+		_, err = db.ExecContext(ctx, fmt.Sprintf("ALTER SYSTEM SET max_locks_per_transaction = %d", lockBoostValue))
+		if err != nil {
+			e.log.Warn("Could not set max_locks_per_transaction", "error", err)
+			
+			if e.cfg.DebugLocks {
+				e.log.Error("🔍 [LOCK-DEBUG] ALTER SYSTEM failed",
+					"error", err)
+			}
+		} else {
+			needsRestart = true
+			e.log.Warn("max_locks_per_transaction requires PostgreSQL restart to take effect",
+				"current", original.MaxLocks,
+				"target", lockBoostValue)
+			
+			if e.cfg.DebugLocks {
+				e.log.Info("🔍 [LOCK-DEBUG] ALTER SYSTEM succeeded - restart required",
+					"setting_saved_to", "postgresql.auto.conf",
+					"active_after", "PostgreSQL restart")
+			}
+		}
+	}
+
+	// Boost maintenance_work_mem to 2GB for faster index creation
+	// (this one CAN be applied via pg_reload_conf)
+	_, err = db.ExecContext(ctx, "ALTER SYSTEM SET maintenance_work_mem = '2GB'")
+	if err != nil {
+		e.log.Warn("Could not boost maintenance_work_mem", "error", err)
+	}
+
+	// Reload config to apply maintenance_work_mem
+	_, err = db.ExecContext(ctx, "SELECT pg_reload_conf()")
+	if err != nil {
+		return original, fmt.Errorf("failed to reload config: %w", err)
+	}
+
+	// If max_locks_per_transaction needs a restart, try to do it
+	if needsRestart {
+		if e.cfg.DebugLocks {
+			e.log.Info("🔍 [LOCK-DEBUG] Attempting PostgreSQL restart to activate new lock setting")
+		}
+		
+		if restarted := e.tryRestartPostgreSQL(ctx); restarted {
+			e.log.Info("PostgreSQL restarted successfully - max_locks_per_transaction now active")
+			
+			if e.cfg.DebugLocks {
+				e.log.Info("🔍 [LOCK-DEBUG] PostgreSQL restart SUCCEEDED")
+			}
+			
+			// Wait for PostgreSQL to be ready
+			time.Sleep(3 * time.Second)
+			// Update original.MaxLocks to reflect the new value after restart
+			var newMaxLocksStr string
+			if err := db.QueryRowContext(ctx, "SHOW max_locks_per_transaction").Scan(&newMaxLocksStr); err == nil {
+				original.MaxLocks, _ = strconv.Atoi(newMaxLocksStr)
+				e.log.Info("Verified new max_locks_per_transaction after restart", "value", original.MaxLocks)
+				
+				if e.cfg.DebugLocks {
+					e.log.Info("🔍 [LOCK-DEBUG] Post-restart verification",
+						"new_max_locks", original.MaxLocks,
+						"target_was", lockBoostValue,
+						"verification", "PASS")
+				}
+			}
+		} else {
+			// Cannot restart - this is now a CRITICAL failure
+			// We tried to boost locks but can't apply them without restart
+			e.log.Error("CRITICAL: max_locks_per_transaction boost requires PostgreSQL restart")
+			e.log.Error("Current value: "+strconv.Itoa(original.MaxLocks)+", required: "+strconv.Itoa(lockBoostValue))
+			e.log.Error("The setting has been saved to postgresql.auto.conf but is NOT ACTIVE")
+			e.log.Error("Restore will ABORT to prevent 'out of shared memory' failure")
+			e.log.Error("Action required: Ask DBA to restart PostgreSQL, then retry restore")
+			
+			if e.cfg.DebugLocks {
+				e.log.Error("🔍 [LOCK-DEBUG] PostgreSQL restart FAILED",
+					"current_locks", original.MaxLocks,
+					"required_locks", lockBoostValue,
+					"setting_saved", true,
+					"setting_active", false,
+					"verdict", "ABORT - Manual restart required")
+			}
+			
+			// Return original settings so caller can check and abort
+			return original, nil
+		}
+	}
+
+	if e.cfg.DebugLocks {
+		e.log.Info("🔍 [LOCK-DEBUG] boostPostgreSQLSettings: Complete",
+			"final_max_locks", original.MaxLocks,
+			"target_was", lockBoostValue,
+			"boost_successful", original.MaxLocks >= lockBoostValue)
+	}
+
+	return original, nil
+}
+
+// canRestartPostgreSQL checks if we have the ability to restart PostgreSQL
+// Returns false if running in a restricted environment (e.g., su postgres on enterprise systems)
+func (e *Engine) canRestartPostgreSQL() bool {
+	// Check if we're running as postgres user - if so, we likely can't restart
+	// because PostgreSQL is managed by init/systemd, not directly by pg_ctl
+	currentUser := os.Getenv("USER")
+	if currentUser == "" {
+		currentUser = os.Getenv("LOGNAME")
+	}
+
+	// If we're the postgres user, check if we have sudo access
+	if currentUser == "postgres" {
+		// Try a quick sudo check - if this fails, we can't restart
+		ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+		defer cancel()
+		cmd := exec.CommandContext(ctx, "sudo", "-n", "true")
+		cmd.Stdin = nil
+		if err := cmd.Run(); err != nil {
+			e.log.Info("Running as postgres user without sudo access - cannot restart PostgreSQL",
+				"user", currentUser,
+				"hint", "Ask system administrator to restart PostgreSQL if needed")
+			return false
+		}
+	}
+
+	return true
+}
+
+// tryRestartPostgreSQL attempts to restart PostgreSQL using various methods
+// Returns true if restart was successful
+// IMPORTANT: Uses short timeouts and non-interactive sudo to avoid blocking on password prompts
+// NOTE: This function will return false immediately if running as postgres without sudo
+func (e *Engine) tryRestartPostgreSQL(ctx context.Context) bool {
+	// First check if we can even attempt a restart
+	if !e.canRestartPostgreSQL() {
+		e.log.Info("Skipping PostgreSQL restart attempt (no privileges)")
+		return false
+	}
+
+	e.progress.Update("Attempting PostgreSQL restart for lock settings...")
+
+	// Use short timeout for each restart attempt (don't block on sudo password prompts)
+	runWithTimeout := func(args ...string) bool {
+		cmdCtx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+		defer cancel()
+		cmd := exec.CommandContext(cmdCtx, args[0], args[1:]...)
+		// Set stdin to /dev/null to prevent sudo from waiting for password
+		cmd.Stdin = nil
+		return cmd.Run() == nil
+	}
+
+	// Method 1: systemctl (most common on modern Linux) - use sudo -n for non-interactive
+	if runWithTimeout("sudo", "-n", "systemctl", "restart", "postgresql") {
+		return true
+	}
+
+	// Method 2: systemctl with version suffix (e.g., postgresql-15)
+	for _, ver := range []string{"17", "16", "15", "14", "13", "12"} {
+		if runWithTimeout("sudo", "-n", "systemctl", "restart", "postgresql-"+ver) {
+			return true
+		}
+	}
+
+	// Method 3: service command (older systems)
+	if runWithTimeout("sudo", "-n", "service", "postgresql", "restart") {
+		return true
+	}
+
+	// Method 4: pg_ctl as postgres user (if we ARE postgres user, no sudo needed)
+	if runWithTimeout("pg_ctl", "restart", "-D", "/var/lib/postgresql/data", "-m", "fast") {
+		return true
+	}
+
+	// Method 5: Try common PGDATA paths with pg_ctl directly (for postgres user)
+	pgdataPaths := []string{
+		"/var/lib/pgsql/data",
+		"/var/lib/pgsql/17/data",
+		"/var/lib/pgsql/16/data",
+		"/var/lib/pgsql/15/data",
+		"/var/lib/postgresql/17/main",
+		"/var/lib/postgresql/16/main",
+		"/var/lib/postgresql/15/main",
+	}
+	for _, pgdata := range pgdataPaths {
+		if runWithTimeout("pg_ctl", "restart", "-D", pgdata, "-m", "fast") {
+			return true
+		}
+	}
+
+	return false
+}
+
+// resetPostgreSQLSettings restores original PostgreSQL settings
+// NOTE: max_locks_per_transaction changes are written but require restart to take effect.
+// We don't restart here since we're done with the restore.
+func (e *Engine) resetPostgreSQLSettings(ctx context.Context, original *OriginalSettings) error {
+	connStr := e.buildConnString()
+	db, err := sql.Open("pgx", connStr)
+	if err != nil {
+		return fmt.Errorf("failed to connect: %w", err)
+	}
+	defer db.Close()
+
+	// Reset max_locks_per_transaction (will take effect on next restart)
+	if original.MaxLocks == 64 { // Default
+		db.ExecContext(ctx, "ALTER SYSTEM RESET max_locks_per_transaction")
+	} else if original.MaxLocks > 0 {
+		db.ExecContext(ctx, fmt.Sprintf("ALTER SYSTEM SET max_locks_per_transaction = %d", original.MaxLocks))
+	}
+
+	// Reset maintenance_work_mem (takes effect immediately with reload)
+	if original.MaintenanceWorkMem == "64MB" { // Default
+		db.ExecContext(ctx, "ALTER SYSTEM RESET maintenance_work_mem")
+	} else if original.MaintenanceWorkMem != "" {
+		db.ExecContext(ctx, fmt.Sprintf("ALTER SYSTEM SET maintenance_work_mem = '%s'", original.MaintenanceWorkMem))
+	}
+
+	// Reload config (only maintenance_work_mem will take effect immediately)
+	_, err = db.ExecContext(ctx, "SELECT pg_reload_conf()")
+	if err != nil {
+		return fmt.Errorf("failed to reload config: %w", err)
+	}
+
+	e.log.Info("PostgreSQL settings reset queued",
+		"note", "max_locks_per_transaction will revert on next PostgreSQL restart")
+
+	return nil
+}

internal/restore/error_report.go

@@ -3,6 +3,7 @@ package restore
 import (
 	"bufio"
 	"compress/gzip"
+	"context"
 	"encoding/json"
 	"fmt"
 	"io"
@@ -20,43 +21,43 @@ import (
 // RestoreErrorReport contains comprehensive information about a restore failure
 type RestoreErrorReport struct {
 	// Metadata
-	Timestamp     time.Time `json:"timestamp"`
-	Version       string    `json:"version"`
-	GoVersion     string    `json:"go_version"`
-	OS            string    `json:"os"`
-	Arch          string    `json:"arch"`
-	
+	Timestamp time.Time `json:"timestamp"`
+	Version   string    `json:"version"`
+	GoVersion string    `json:"go_version"`
+	OS        string    `json:"os"`
+	Arch      string    `json:"arch"`
+
 	// Archive info
 	ArchivePath   string `json:"archive_path"`
 	ArchiveSize   int64  `json:"archive_size"`
 	ArchiveFormat string `json:"archive_format"`
-	
+
 	// Database info
-	TargetDB      string `json:"target_db"`
-	DatabaseType  string `json:"database_type"`
-	
+	TargetDB     string `json:"target_db"`
+	DatabaseType string `json:"database_type"`
+
 	// Error details
-	ExitCode      int      `json:"exit_code"`
-	ErrorMessage  string   `json:"error_message"`
-	ErrorType     string   `json:"error_type"`
-	ErrorHint     string   `json:"error_hint"`
-	TotalErrors   int      `json:"total_errors"`
-	
+	ExitCode     int    `json:"exit_code"`
+	ErrorMessage string `json:"error_message"`
+	ErrorType    string `json:"error_type"`
+	ErrorHint    string `json:"error_hint"`
+	TotalErrors  int    `json:"total_errors"`
+
 	// Captured output
-	LastStderr    []string `json:"last_stderr"`
-	FirstErrors   []string `json:"first_errors"`
-	
+	LastStderr  []string `json:"last_stderr"`
+	FirstErrors []string `json:"first_errors"`
+
 	// Context around failure
 	FailureContext *FailureContext `json:"failure_context,omitempty"`
-	
+
 	// Diagnosis results
 	DiagnosisResult *DiagnoseResult `json:"diagnosis_result,omitempty"`
-	
+
 	// Environment (sanitized)
-	PostgresVersion string `json:"postgres_version,omitempty"`
+	PostgresVersion  string `json:"postgres_version,omitempty"`
 	PgRestoreVersion string `json:"pg_restore_version,omitempty"`
-	PsqlVersion     string `json:"psql_version,omitempty"`
-	
+	PsqlVersion      string `json:"psql_version,omitempty"`
+
 	// Recommendations
 	Recommendations []string `json:"recommendations"`
 }
@@ -67,40 +68,40 @@ type FailureContext struct {
 	FailedLine       int      `json:"failed_line,omitempty"`
 	FailedStatement  string   `json:"failed_statement,omitempty"`
 	SurroundingLines []string `json:"surrounding_lines,omitempty"`
-	
+
 	// For COPY block errors
-	InCopyBlock      bool   `json:"in_copy_block,omitempty"`
-	CopyTableName    string `json:"copy_table_name,omitempty"`
-	CopyStartLine    int    `json:"copy_start_line,omitempty"`
-	SampleCopyData   []string `json:"sample_copy_data,omitempty"`
-	
+	InCopyBlock    bool     `json:"in_copy_block,omitempty"`
+	CopyTableName  string   `json:"copy_table_name,omitempty"`
+	CopyStartLine  int      `json:"copy_start_line,omitempty"`
+	SampleCopyData []string `json:"sample_copy_data,omitempty"`
+
 	// File position info
-	BytePosition     int64 `json:"byte_position,omitempty"`
-	PercentComplete  float64 `json:"percent_complete,omitempty"`
+	BytePosition    int64   `json:"byte_position,omitempty"`
+	PercentComplete float64 `json:"percent_complete,omitempty"`
 }
 
 // ErrorCollector captures detailed error information during restore
 type ErrorCollector struct {
-	log            logger.Logger
-	cfg            *config.Config
-	archivePath    string
-	targetDB       string
-	format         ArchiveFormat
-	
+	log         logger.Logger
+	cfg         *config.Config
+	archivePath string
+	targetDB    string
+	format      ArchiveFormat
+
 	// Captured data
-	stderrLines    []string
-	firstErrors    []string
-	lastErrors     []string
-	totalErrors    int
-	exitCode       int
-	
+	stderrLines []string
+	firstErrors []string
+	lastErrors  []string
+	totalErrors int
+	exitCode    int
+
 	// Limits
 	maxStderrLines  int
 	maxErrorCapture int
-	
+
 	// State
-	startTime      time.Time
-	enabled        bool
+	startTime time.Time
+	enabled   bool
 }
 
 // NewErrorCollector creates a new error collector
@@ -126,30 +127,30 @@ func (ec *ErrorCollector) CaptureStderr(chunk string) {
 	if !ec.enabled {
 		return
 	}
-	
+
 	lines := strings.Split(chunk, "\n")
 	for _, line := range lines {
 		line = strings.TrimSpace(line)
 		if line == "" {
 			continue
 		}
-		
+
 		// Store last N lines of stderr
 		if len(ec.stderrLines) >= ec.maxStderrLines {
 			// Shift array, drop oldest
 			ec.stderrLines = ec.stderrLines[1:]
 		}
 		ec.stderrLines = append(ec.stderrLines, line)
-		
+
 		// Check if this is an error line
 		if isErrorLine(line) {
 			ec.totalErrors++
-			
+
 			// Capture first N errors
 			if len(ec.firstErrors) < ec.maxErrorCapture {
 				ec.firstErrors = append(ec.firstErrors, line)
 			}
-			
+
 			// Keep last N errors (ring buffer style)
 			if len(ec.lastErrors) >= ec.maxErrorCapture {
 				ec.lastErrors = ec.lastErrors[1:]
@@ -184,36 +185,36 @@ func (ec *ErrorCollector) GenerateReport(errMessage string, errType string, errH
 		LastStderr:    ec.stderrLines,
 		FirstErrors:   ec.firstErrors,
 	}
-	
+
 	// Get archive size
 	if stat, err := os.Stat(ec.archivePath); err == nil {
 		report.ArchiveSize = stat.Size()
 	}
-	
+
 	// Get tool versions
 	report.PostgresVersion = getCommandVersion("postgres", "--version")
 	report.PgRestoreVersion = getCommandVersion("pg_restore", "--version")
 	report.PsqlVersion = getCommandVersion("psql", "--version")
-	
+
 	// Analyze failure context
 	report.FailureContext = ec.analyzeFailureContext()
-	
+
 	// Run diagnosis if not already done
 	diagnoser := NewDiagnoser(ec.log, false)
 	if diagResult, err := diagnoser.DiagnoseFile(ec.archivePath); err == nil {
 		report.DiagnosisResult = diagResult
 	}
-	
+
 	// Generate recommendations
 	report.Recommendations = ec.generateRecommendations(report)
-	
+
 	return report
 }
 
 // analyzeFailureContext extracts context around the failure
 func (ec *ErrorCollector) analyzeFailureContext() *FailureContext {
 	ctx := &FailureContext{}
-	
+
 	// Look for line number in errors
 	for _, errLine := range ec.lastErrors {
 		if lineNum := extractLineNumber(errLine); lineNum > 0 {
@@ -221,7 +222,7 @@ func (ec *ErrorCollector) analyzeFailureContext() *FailureContext {
 			break
 		}
 	}
-	
+
 	// Look for COPY-related errors
 	for _, errLine := range ec.lastErrors {
 		if strings.Contains(errLine, "COPY") || strings.Contains(errLine, "syntax error") {
@@ -233,12 +234,12 @@ func (ec *ErrorCollector) analyzeFailureContext() *FailureContext {
 			break
 		}
 	}
-	
+
 	// If we have a line number, try to get surrounding context from the dump
 	if ctx.FailedLine > 0 && ec.archivePath != "" {
 		ctx.SurroundingLines = ec.getSurroundingLines(ctx.FailedLine, 5)
 	}
-	
+
 	return ctx
 }
 
@@ -246,13 +247,13 @@ func (ec *ErrorCollector) analyzeFailureContext() *FailureContext {
 func (ec *ErrorCollector) getSurroundingLines(lineNum int, context int) []string {
 	var reader io.Reader
 	var lines []string
-	
+
 	file, err := os.Open(ec.archivePath)
 	if err != nil {
 		return nil
 	}
 	defer file.Close()
-	
+
 	// Handle compressed files
 	if strings.HasSuffix(ec.archivePath, ".gz") {
 		gz, err := gzip.NewReader(file)
@@ -264,19 +265,19 @@ func (ec *ErrorCollector) getSurroundingLines(lineNum int, context int) []string
 	} else {
 		reader = file
 	}
-	
+
 	scanner := bufio.NewScanner(reader)
 	buf := make([]byte, 0, 1024*1024)
 	scanner.Buffer(buf, 10*1024*1024)
-	
+
 	currentLine := 0
 	startLine := lineNum - context
 	endLine := lineNum + context
-	
+
 	if startLine < 1 {
 		startLine = 1
 	}
-	
+
 	for scanner.Scan() {
 		currentLine++
 		if currentLine >= startLine && currentLine <= endLine {
@@ -290,18 +291,18 @@ func (ec *ErrorCollector) getSurroundingLines(lineNum int, context int) []string
 			break
 		}
 	}
-	
+
 	return lines
 }
 
 // generateRecommendations provides actionable recommendations based on the error
 func (ec *ErrorCollector) generateRecommendations(report *RestoreErrorReport) []string {
 	var recs []string
-	
+
 	// Check diagnosis results
 	if report.DiagnosisResult != nil {
 		if report.DiagnosisResult.IsTruncated {
-			recs = append(recs, 
+			recs = append(recs,
 				"CRITICAL: Backup file is truncated/incomplete",
 				"Action: Re-run the backup for the affected database",
 				"Check: Verify disk space was available during backup",
@@ -317,14 +318,14 @@ func (ec *ErrorCollector) generateRecommendations(report *RestoreErrorReport) []
 		}
 		if report.DiagnosisResult.Details != nil && report.DiagnosisResult.Details.UnterminatedCopy {
 			recs = append(recs,
-				fmt.Sprintf("ISSUE: COPY block for table '%s' was not terminated", 
+				fmt.Sprintf("ISSUE: COPY block for table '%s' was not terminated",
 					report.DiagnosisResult.Details.LastCopyTable),
 				"Cause: Backup was interrupted during data export",
 				"Action: Re-run backup ensuring it completes fully",
 			)
 		}
 	}
-	
+
 	// Check error patterns
 	if report.TotalErrors > 1000000 {
 		recs = append(recs,
@@ -333,7 +334,7 @@ func (ec *ErrorCollector) generateRecommendations(report *RestoreErrorReport) []
 			"Check: Verify dump format matches restore command",
 		)
 	}
-	
+
 	// Check for common error types
 	errLower := strings.ToLower(report.ErrorMessage)
 	if strings.Contains(errLower, "syntax error") {
@@ -343,7 +344,7 @@ func (ec *ErrorCollector) generateRecommendations(report *RestoreErrorReport) []
 			"Check: Run 'dbbackup restore diagnose <archive>' for detailed analysis",
 		)
 	}
-	
+
 	if strings.Contains(errLower, "permission denied") {
 		recs = append(recs,
 			"ISSUE: Permission denied",
@@ -351,7 +352,7 @@ func (ec *ErrorCollector) generateRecommendations(report *RestoreErrorReport) []
 			"Action: For ownership preservation, use a superuser account",
 		)
 	}
-	
+
 	if strings.Contains(errLower, "does not exist") {
 		recs = append(recs,
 			"ISSUE: Missing object reference",
@@ -359,7 +360,7 @@ func (ec *ErrorCollector) generateRecommendations(report *RestoreErrorReport) []
 			"Action: Check if target database was created",
 		)
 	}
-	
+
 	if len(recs) == 0 {
 		recs = append(recs,
 			"Run 'dbbackup restore diagnose <archive>' for detailed analysis",
@@ -367,7 +368,7 @@ func (ec *ErrorCollector) generateRecommendations(report *RestoreErrorReport) []
 			"Review the PostgreSQL/MySQL logs on the target server",
 		)
 	}
-	
+
 	return recs
 }
 
@@ -378,56 +379,56 @@ func (ec *ErrorCollector) SaveReport(report *RestoreErrorReport, outputPath stri
 	if err := os.MkdirAll(dir, 0755); err != nil {
 		return fmt.Errorf("failed to create directory: %w", err)
 	}
-	
+
 	// Marshal to JSON with indentation
 	data, err := json.MarshalIndent(report, "", "  ")
 	if err != nil {
 		return fmt.Errorf("failed to marshal report: %w", err)
 	}
-	
+
 	// Write file
 	if err := os.WriteFile(outputPath, data, 0644); err != nil {
 		return fmt.Errorf("failed to write report: %w", err)
 	}
-	
+
 	return nil
 }
 
 // PrintReport prints a human-readable summary of the error report
 func (ec *ErrorCollector) PrintReport(report *RestoreErrorReport) {
 	fmt.Println()
-	fmt.Println(strings.Repeat("═", 70))
-	fmt.Println("  🔴 RESTORE ERROR REPORT")
-	fmt.Println(strings.Repeat("═", 70))
-	
-	fmt.Printf("\n📅 Timestamp:    %s\n", report.Timestamp.Format("2006-01-02 15:04:05"))
-	fmt.Printf("📦 Archive:      %s\n", filepath.Base(report.ArchivePath))
-	fmt.Printf("📊 Format:       %s\n", report.ArchiveFormat)
-	fmt.Printf("🎯 Target DB:    %s\n", report.TargetDB)
-	fmt.Printf("⚠️  Exit Code:    %d\n", report.ExitCode)
-	fmt.Printf("❌ Total Errors: %d\n", report.TotalErrors)
-	
-	fmt.Println("\n" + strings.Repeat("─", 70))
+	fmt.Println(strings.Repeat("=", 70))
+	fmt.Println("  [ERROR] RESTORE ERROR REPORT")
+	fmt.Println(strings.Repeat("=", 70))
+
+	fmt.Printf("\n[TIME] Timestamp:    %s\n", report.Timestamp.Format("2006-01-02 15:04:05"))
+	fmt.Printf("[FILE] Archive:      %s\n", filepath.Base(report.ArchivePath))
+	fmt.Printf("[FMT] Format:       %s\n", report.ArchiveFormat)
+	fmt.Printf("[TGT] Target DB:    %s\n", report.TargetDB)
+	fmt.Printf("[CODE] Exit Code:    %d\n", report.ExitCode)
+	fmt.Printf("[ERR] Total Errors: %d\n", report.TotalErrors)
+
+	fmt.Println("\n" + strings.Repeat("-", 70))
 	fmt.Println("ERROR DETAILS:")
-	fmt.Println(strings.Repeat("─", 70))
-	
+	fmt.Println(strings.Repeat("-", 70))
+
 	fmt.Printf("\nType: %s\n", report.ErrorType)
 	fmt.Printf("Message: %s\n", report.ErrorMessage)
 	if report.ErrorHint != "" {
 		fmt.Printf("Hint: %s\n", report.ErrorHint)
 	}
-	
+
 	// Show failure context
 	if report.FailureContext != nil && report.FailureContext.FailedLine > 0 {
-		fmt.Println("\n" + strings.Repeat("─", 70))
+		fmt.Println("\n" + strings.Repeat("-", 70))
 		fmt.Println("FAILURE CONTEXT:")
-		fmt.Println(strings.Repeat("─", 70))
-		
+		fmt.Println(strings.Repeat("-", 70))
+
 		fmt.Printf("\nFailed at line: %d\n", report.FailureContext.FailedLine)
 		if report.FailureContext.InCopyBlock {
 			fmt.Printf("Inside COPY block for table: %s\n", report.FailureContext.CopyTableName)
 		}
-		
+
 		if len(report.FailureContext.SurroundingLines) > 0 {
 			fmt.Println("\nSurrounding lines:")
 			for _, line := range report.FailureContext.SurroundingLines {
@@ -435,13 +436,13 @@ func (ec *ErrorCollector) PrintReport(report *RestoreErrorReport) {
 			}
 		}
 	}
-	
+
 	// Show first few errors
 	if len(report.FirstErrors) > 0 {
-		fmt.Println("\n" + strings.Repeat("─", 70))
+		fmt.Println("\n" + strings.Repeat("-", 70))
 		fmt.Println("FIRST ERRORS:")
-		fmt.Println(strings.Repeat("─", 70))
-		
+		fmt.Println(strings.Repeat("-", 70))
+
 		for i, err := range report.FirstErrors {
 			if i >= 5 {
 				fmt.Printf("... and %d more\n", len(report.FirstErrors)-5)
@@ -450,18 +451,18 @@ func (ec *ErrorCollector) PrintReport(report *RestoreErrorReport) {
 			fmt.Printf("  %d. %s\n", i+1, truncateString(err, 100))
 		}
 	}
-	
+
 	// Show diagnosis summary
 	if report.DiagnosisResult != nil && !report.DiagnosisResult.IsValid {
-		fmt.Println("\n" + strings.Repeat("─", 70))
+		fmt.Println("\n" + strings.Repeat("-", 70))
 		fmt.Println("DIAGNOSIS:")
-		fmt.Println(strings.Repeat("─", 70))
-		
+		fmt.Println(strings.Repeat("-", 70))
+
 		if report.DiagnosisResult.IsTruncated {
-			fmt.Println("  ❌ File is TRUNCATED")
+			fmt.Println("  [FAIL] File is TRUNCATED")
 		}
 		if report.DiagnosisResult.IsCorrupted {
-			fmt.Println("  ❌ File is CORRUPTED")
+			fmt.Println("  [FAIL] File is CORRUPTED")
 		}
 		for i, err := range report.DiagnosisResult.Errors {
 			if i >= 3 {
@@ -470,21 +471,21 @@ func (ec *ErrorCollector) PrintReport(report *RestoreErrorReport) {
 			fmt.Printf("  • %s\n", err)
 		}
 	}
-	
+
 	// Show recommendations
-	fmt.Println("\n" + strings.Repeat("─", 70))
-	fmt.Println("💡 RECOMMENDATIONS:")
-	fmt.Println(strings.Repeat("─", 70))
-	
+	fmt.Println("\n" + strings.Repeat("-", 70))
+	fmt.Println("[HINT] RECOMMENDATIONS:")
+	fmt.Println(strings.Repeat("-", 70))
+
 	for _, rec := range report.Recommendations {
-		fmt.Printf("  • %s\n", rec)
+		fmt.Printf("  - %s\n", rec)
 	}
-	
+
 	// Show tool versions
-	fmt.Println("\n" + strings.Repeat("─", 70))
+	fmt.Println("\n" + strings.Repeat("-", 70))
 	fmt.Println("ENVIRONMENT:")
-	fmt.Println(strings.Repeat("─", 70))
-	
+	fmt.Println(strings.Repeat("-", 70))
+
 	fmt.Printf("  OS: %s/%s\n", report.OS, report.Arch)
 	fmt.Printf("  Go: %s\n", report.GoVersion)
 	if report.PgRestoreVersion != "" {
@@ -493,15 +494,15 @@ func (ec *ErrorCollector) PrintReport(report *RestoreErrorReport) {
 	if report.PsqlVersion != "" {
 		fmt.Printf("  psql: %s\n", report.PsqlVersion)
 	}
-	
-	fmt.Println(strings.Repeat("═", 70))
+
+	fmt.Println(strings.Repeat("=", 70))
 }
 
 // Helper functions
 
 func isErrorLine(line string) bool {
-	return strings.Contains(line, "ERROR:") || 
-		strings.Contains(line, "FATAL:") || 
+	return strings.Contains(line, "ERROR:") ||
+		strings.Contains(line, "FATAL:") ||
 		strings.Contains(line, "error:") ||
 		strings.Contains(line, "PANIC:")
 }
@@ -556,7 +557,11 @@ func getDatabaseType(format ArchiveFormat) string {
 }
 
 func getCommandVersion(cmd string, arg string) string {
-	output, err := exec.Command(cmd, arg).CombinedOutput()
+	// Use timeout to prevent blocking if command hangs
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	output, err := exec.CommandContext(ctx, cmd, arg).CombinedOutput()
 	if err != nil {
 		return ""
 	}

internal/restore/extract.go

@@ -0,0 +1,344 @@
+package restore
+
+import (
+	"archive/tar"
+	"compress/gzip"
+	"context"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+
+	"dbbackup/internal/logger"
+	"dbbackup/internal/progress"
+)
+
+// DatabaseInfo represents metadata about a database in a cluster backup
+type DatabaseInfo struct {
+	Name     string
+	Filename string
+	Size     int64
+}
+
+// ListDatabasesInCluster lists all databases in a cluster backup archive
+func ListDatabasesInCluster(ctx context.Context, archivePath string, log logger.Logger) ([]DatabaseInfo, error) {
+	file, err := os.Open(archivePath)
+	if err != nil {
+		return nil, fmt.Errorf("cannot open archive: %w", err)
+	}
+	defer file.Close()
+
+	gz, err := gzip.NewReader(file)
+	if err != nil {
+		return nil, fmt.Errorf("not a valid gzip archive: %w", err)
+	}
+	defer gz.Close()
+
+	tarReader := tar.NewReader(gz)
+	databases := make([]DatabaseInfo, 0)
+
+	for {
+		select {
+		case <-ctx.Done():
+			return nil, ctx.Err()
+		default:
+		}
+
+		header, err := tarReader.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return nil, fmt.Errorf("error reading tar archive: %w", err)
+		}
+
+		// Look for files in dumps/ directory
+		if !header.FileInfo().IsDir() && strings.HasPrefix(header.Name, "dumps/") {
+			filename := filepath.Base(header.Name)
+
+			// Extract database name from filename (remove .dump, .dump.gz, .sql, .sql.gz)
+			dbName := filename
+			dbName = strings.TrimSuffix(dbName, ".dump.gz")
+			dbName = strings.TrimSuffix(dbName, ".dump")
+			dbName = strings.TrimSuffix(dbName, ".sql.gz")
+			dbName = strings.TrimSuffix(dbName, ".sql")
+
+			databases = append(databases, DatabaseInfo{
+				Name:     dbName,
+				Filename: filename,
+				Size:     header.Size,
+			})
+		}
+	}
+
+	// Sort by name for consistent output
+	sort.Slice(databases, func(i, j int) bool {
+		return databases[i].Name < databases[j].Name
+	})
+
+	if len(databases) == 0 {
+		return nil, fmt.Errorf("no databases found in cluster backup")
+	}
+
+	return databases, nil
+}
+
+// ExtractDatabaseFromCluster extracts a single database dump from cluster backup
+func ExtractDatabaseFromCluster(ctx context.Context, archivePath, dbName, outputDir string, log logger.Logger, prog progress.Indicator) (string, error) {
+	file, err := os.Open(archivePath)
+	if err != nil {
+		return "", fmt.Errorf("cannot open archive: %w", err)
+	}
+	defer file.Close()
+
+	stat, err := file.Stat()
+	if err != nil {
+		return "", fmt.Errorf("cannot stat archive: %w", err)
+	}
+	archiveSize := stat.Size()
+
+	gz, err := gzip.NewReader(file)
+	if err != nil {
+		return "", fmt.Errorf("not a valid gzip archive: %w", err)
+	}
+	defer gz.Close()
+
+	tarReader := tar.NewReader(gz)
+
+	// Create output directory if needed
+	if err := os.MkdirAll(outputDir, 0755); err != nil {
+		return "", fmt.Errorf("cannot create output directory: %w", err)
+	}
+
+	targetPattern := fmt.Sprintf("dumps/%s.", dbName) // Match dbName.dump, dbName.sql, etc.
+	var extractedPath string
+	found := false
+
+	if prog != nil {
+		prog.Start(fmt.Sprintf("Extracting database: %s", dbName))
+		defer prog.Stop()
+	}
+
+	var bytesRead int64
+	ticker := make(chan struct{})
+	stopTicker := make(chan struct{})
+	go func() {
+		for {
+			select {
+			case <-ctx.Done():
+				return
+			case <-stopTicker:
+				return
+			case <-ticker:
+				if prog != nil && archiveSize > 0 {
+					percentage := float64(bytesRead) / float64(archiveSize) * 100
+					prog.Update(fmt.Sprintf("Scanning: %.1f%%", percentage))
+				}
+			}
+		}
+	}()
+
+	for {
+		select {
+		case <-ctx.Done():
+			close(stopTicker)
+			return "", ctx.Err()
+		default:
+		}
+
+		header, err := tarReader.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			close(stopTicker)
+			return "", fmt.Errorf("error reading tar archive: %w", err)
+		}
+
+		bytesRead += header.Size
+		select {
+		case ticker <- struct{}{}:
+		default:
+		}
+
+		// Check if this is the database we're looking for
+		if strings.HasPrefix(header.Name, targetPattern) && !header.FileInfo().IsDir() {
+			filename := filepath.Base(header.Name)
+			extractedPath = filepath.Join(outputDir, filename)
+
+			// Extract the file
+			outFile, err := os.Create(extractedPath)
+			if err != nil {
+				close(stopTicker)
+				return "", fmt.Errorf("cannot create output file: %w", err)
+			}
+
+			if prog != nil {
+				prog.Update(fmt.Sprintf("Extracting: %s", filename))
+			}
+
+			written, err := io.Copy(outFile, tarReader)
+			outFile.Close()
+			if err != nil {
+				close(stopTicker)
+				return "", fmt.Errorf("extraction failed: %w", err)
+			}
+
+			log.Info("Database extracted successfully", "database", dbName, "size", formatBytes(written), "path", extractedPath)
+			found = true
+			break
+		}
+	}
+
+	close(stopTicker)
+
+	if !found {
+		return "", fmt.Errorf("database '%s' not found in cluster backup", dbName)
+	}
+
+	return extractedPath, nil
+}
+
+// ExtractMultipleDatabasesFromCluster extracts multiple databases from cluster backup
+func ExtractMultipleDatabasesFromCluster(ctx context.Context, archivePath string, dbNames []string, outputDir string, log logger.Logger, prog progress.Indicator) (map[string]string, error) {
+	file, err := os.Open(archivePath)
+	if err != nil {
+		return nil, fmt.Errorf("cannot open archive: %w", err)
+	}
+	defer file.Close()
+
+	stat, err := file.Stat()
+	if err != nil {
+		return nil, fmt.Errorf("cannot stat archive: %w", err)
+	}
+	archiveSize := stat.Size()
+
+	gz, err := gzip.NewReader(file)
+	if err != nil {
+		return nil, fmt.Errorf("not a valid gzip archive: %w", err)
+	}
+	defer gz.Close()
+
+	tarReader := tar.NewReader(gz)
+
+	// Create output directory if needed
+	if err := os.MkdirAll(outputDir, 0755); err != nil {
+		return nil, fmt.Errorf("cannot create output directory: %w", err)
+	}
+
+	// Build lookup map
+	targetDBs := make(map[string]bool)
+	for _, dbName := range dbNames {
+		targetDBs[dbName] = true
+	}
+
+	extractedPaths := make(map[string]string)
+
+	if prog != nil {
+		prog.Start(fmt.Sprintf("Extracting %d databases", len(dbNames)))
+		defer prog.Stop()
+	}
+
+	var bytesRead int64
+	ticker := make(chan struct{})
+	stopTicker := make(chan struct{})
+	go func() {
+		for {
+			select {
+			case <-ctx.Done():
+				return
+			case <-stopTicker:
+				return
+			case <-ticker:
+				if prog != nil && archiveSize > 0 {
+					percentage := float64(bytesRead) / float64(archiveSize) * 100
+					prog.Update(fmt.Sprintf("Scanning: %.1f%% (%d/%d found)", percentage, len(extractedPaths), len(dbNames)))
+				}
+			}
+		}
+	}()
+
+	for {
+		select {
+		case <-ctx.Done():
+			close(stopTicker)
+			return nil, ctx.Err()
+		default:
+		}
+
+		header, err := tarReader.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			close(stopTicker)
+			return nil, fmt.Errorf("error reading tar archive: %w", err)
+		}
+
+		bytesRead += header.Size
+		select {
+		case ticker <- struct{}{}:
+		default:
+		}
+
+		// Check if this is one of the databases we're looking for
+		if strings.HasPrefix(header.Name, "dumps/") && !header.FileInfo().IsDir() {
+			filename := filepath.Base(header.Name)
+
+			// Extract database name
+			dbName := filename
+			dbName = strings.TrimSuffix(dbName, ".dump.gz")
+			dbName = strings.TrimSuffix(dbName, ".dump")
+			dbName = strings.TrimSuffix(dbName, ".sql.gz")
+			dbName = strings.TrimSuffix(dbName, ".sql")
+
+			if targetDBs[dbName] {
+				extractedPath := filepath.Join(outputDir, filename)
+
+				// Extract the file
+				outFile, err := os.Create(extractedPath)
+				if err != nil {
+					close(stopTicker)
+					return nil, fmt.Errorf("cannot create output file for %s: %w", dbName, err)
+				}
+
+				if prog != nil {
+					prog.Update(fmt.Sprintf("Extracting: %s (%d/%d)", dbName, len(extractedPaths)+1, len(dbNames)))
+				}
+
+				written, err := io.Copy(outFile, tarReader)
+				outFile.Close()
+				if err != nil {
+					close(stopTicker)
+					return nil, fmt.Errorf("extraction failed for %s: %w", dbName, err)
+				}
+
+				log.Info("Database extracted", "database", dbName, "size", formatBytes(written))
+				extractedPaths[dbName] = extractedPath
+
+				// Stop early if we found all databases
+				if len(extractedPaths) == len(dbNames) {
+					break
+				}
+			}
+		}
+	}
+
+	close(stopTicker)
+
+	// Check if all requested databases were found
+	missing := make([]string, 0)
+	for _, dbName := range dbNames {
+		if _, found := extractedPaths[dbName]; !found {
+			missing = append(missing, dbName)
+		}
+	}
+
+	if len(missing) > 0 {
+		return extractedPaths, fmt.Errorf("databases not found in cluster backup: %s", strings.Join(missing, ", "))
+	}
+
+	return extractedPaths, nil
+}

internal/restore/large_db_guard.go

@@ -0,0 +1,363 @@
+package restore
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"time"
+
+	"dbbackup/internal/config"
+	"dbbackup/internal/logger"
+)
+
+// LargeDBGuard provides bulletproof protection for large database restores
+type LargeDBGuard struct {
+	log logger.Logger
+	cfg *config.Config
+}
+
+// RestoreStrategy determines how to restore based on database characteristics
+type RestoreStrategy struct {
+	UseConservative bool   // Force conservative (single-threaded) mode
+	Reason          string // Why this strategy was chosen
+	Jobs            int    // Recommended --jobs value
+	ParallelDBs     int    // Recommended parallel database restores
+	ExpectedTime    string // Estimated restore time
+}
+
+// NewLargeDBGuard creates a new guard
+func NewLargeDBGuard(cfg *config.Config, log logger.Logger) *LargeDBGuard {
+	return &LargeDBGuard{
+		cfg: cfg,
+		log: log,
+	}
+}
+
+// DetermineStrategy analyzes the restore and determines the safest approach
+func (g *LargeDBGuard) DetermineStrategy(ctx context.Context, archivePath string, dumpFiles []string) *RestoreStrategy {
+	strategy := &RestoreStrategy{
+		UseConservative: false,
+		Jobs:            0, // Will use profile default
+		ParallelDBs:     0, // Will use profile default
+	}
+
+	if g.cfg.DebugLocks {
+		g.log.Info("🔍 [LOCK-DEBUG] Large DB Guard: Starting strategy analysis",
+			"archive", archivePath,
+			"dump_count", len(dumpFiles))
+	}
+
+	// 1. Check for large objects (BLOBs)
+	hasLargeObjects, blobCount := g.detectLargeObjects(ctx, dumpFiles)
+	if hasLargeObjects {
+		strategy.UseConservative = true
+		strategy.Reason = fmt.Sprintf("Database contains %d large objects (BLOBs)", blobCount)
+		strategy.Jobs = 1
+		strategy.ParallelDBs = 1
+
+		if blobCount > 10000 {
+			strategy.ExpectedTime = "8-12 hours for very large BLOB database"
+		} else if blobCount > 1000 {
+			strategy.ExpectedTime = "4-8 hours for large BLOB database"
+		} else {
+			strategy.ExpectedTime = "2-4 hours"
+		}
+
+		g.log.Warn("🛡️  Large DB Guard: Forcing conservative mode",
+			"blob_count", blobCount,
+			"reason", strategy.Reason)
+		return strategy
+	}
+
+	// 2. Check total database size
+	totalSize := g.estimateTotalSize(dumpFiles)
+	if totalSize > 50*1024*1024*1024 { // > 50GB
+		strategy.UseConservative = true
+		strategy.Reason = fmt.Sprintf("Total database size: %s (>50GB)", FormatBytes(totalSize))
+		strategy.Jobs = 1
+		strategy.ParallelDBs = 1
+		strategy.ExpectedTime = "6-10 hours for very large database"
+
+		g.log.Warn("🛡️  Large DB Guard: Forcing conservative mode",
+			"total_size_gb", totalSize/(1024*1024*1024),
+			"reason", strategy.Reason)
+		return strategy
+	}
+
+	// 3. Check PostgreSQL lock configuration
+	// CRITICAL: ALWAYS force conservative mode unless locks are 4096+
+	// Parallel restore exhausts locks even with 2048 and high connection count
+	// This is the PRIMARY protection - lock exhaustion is the #1 failure mode
+	maxLocks, maxConns := g.checkLockConfiguration(ctx)
+	lockCapacity := maxLocks * maxConns
+	
+	if g.cfg.DebugLocks {
+		g.log.Info("🔍 [LOCK-DEBUG] PostgreSQL lock configuration detected",
+			"max_locks_per_transaction", maxLocks,
+			"max_connections", maxConns,
+			"calculated_capacity", lockCapacity,
+			"threshold_required", 4096,
+			"below_threshold", maxLocks < 4096)
+	}
+	
+	if maxLocks < 4096 {
+		strategy.UseConservative = true
+		strategy.Reason = fmt.Sprintf("PostgreSQL max_locks_per_transaction=%d (need 4096+ for parallel restore)", maxLocks)
+		strategy.Jobs = 1
+		strategy.ParallelDBs = 1
+
+		g.log.Warn("🛡️  Large DB Guard: FORCING conservative mode - lock protection",
+			"max_locks_per_transaction", maxLocks,
+			"max_connections", maxConns,
+			"total_capacity", lockCapacity,
+			"required_locks", 4096,
+			"reason", strategy.Reason)
+		
+		if g.cfg.DebugLocks {
+			g.log.Info("🔍 [LOCK-DEBUG] Guard decision: CONSERVATIVE mode",
+				"jobs", 1,
+				"parallel_dbs", 1,
+				"reason", "Lock threshold not met (max_locks < 4096)")
+		}
+		return strategy
+	}
+	
+	g.log.Info("✅ Large DB Guard: Lock configuration OK for parallel restore",
+		"max_locks_per_transaction", maxLocks,
+		"max_connections", maxConns,
+		"total_capacity", lockCapacity)
+	
+	if g.cfg.DebugLocks {
+		g.log.Info("🔍 [LOCK-DEBUG] Lock check PASSED - parallel restore allowed",
+			"max_locks", maxLocks,
+			"threshold", 4096,
+			"verdict", "PASS")
+	}
+
+	// 4. Check individual dump file sizes
+	largestDump := g.findLargestDump(dumpFiles)
+	if largestDump.size > 10*1024*1024*1024 { // > 10GB single dump
+		strategy.UseConservative = true
+		strategy.Reason = fmt.Sprintf("Largest database: %s (%s)", largestDump.name, FormatBytes(largestDump.size))
+		strategy.Jobs = 1
+		strategy.ParallelDBs = 1
+
+		g.log.Warn("🛡️  Large DB Guard: Forcing conservative mode",
+			"largest_db", largestDump.name,
+			"size_gb", largestDump.size/(1024*1024*1024),
+			"reason", strategy.Reason)
+		return strategy
+	}
+
+	// All checks passed - safe to use default profile
+	strategy.Reason = "No large database risks detected"
+	g.log.Info("✅ Large DB Guard: Safe to use default profile")
+	
+	if g.cfg.DebugLocks {
+		g.log.Info("🔍 [LOCK-DEBUG] Final strategy: Default profile (no restrictions)",
+			"use_conservative", false,
+			"reason", strategy.Reason)
+	}
+	
+	return strategy
+}
+
+// detectLargeObjects checks dump files for BLOBs/large objects
+func (g *LargeDBGuard) detectLargeObjects(ctx context.Context, dumpFiles []string) (bool, int) {
+	totalBlobCount := 0
+
+	for _, dumpFile := range dumpFiles {
+		// Skip if not a custom format dump
+		if !strings.HasSuffix(dumpFile, ".dump") {
+			continue
+		}
+
+		// Use pg_restore -l to list contents (fast)
+		listCtx, cancel := context.WithTimeout(ctx, 30*time.Second)
+		cmd := exec.CommandContext(listCtx, "pg_restore", "-l", dumpFile)
+		output, err := cmd.Output()
+		cancel()
+
+		if err != nil {
+			continue // Skip on error
+		}
+
+		// Count BLOB entries
+		for _, line := range strings.Split(string(output), "\n") {
+			if strings.Contains(line, "BLOB") ||
+				strings.Contains(line, "LARGE OBJECT") ||
+				strings.Contains(line, " BLOBS ") {
+				totalBlobCount++
+			}
+		}
+	}
+
+	return totalBlobCount > 0, totalBlobCount
+}
+
+// estimateTotalSize calculates total size of all dump files
+func (g *LargeDBGuard) estimateTotalSize(dumpFiles []string) int64 {
+	var total int64
+	for _, file := range dumpFiles {
+		if info, err := os.Stat(file); err == nil {
+			total += info.Size()
+		}
+	}
+	return total
+}
+
+// checkLockCapacity gets PostgreSQL lock table capacity
+func (g *LargeDBGuard) checkLockCapacity(ctx context.Context) int {
+	maxLocks, maxConns := g.checkLockConfiguration(ctx)
+	maxPrepared := 0 // We don't use prepared transactions in restore
+
+	// Calculate total lock capacity
+	capacity := maxLocks * (maxConns + maxPrepared)
+	return capacity
+}
+
+// checkLockConfiguration returns max_locks_per_transaction and max_connections
+func (g *LargeDBGuard) checkLockConfiguration(ctx context.Context) (int, int) {
+	if g.cfg.DebugLocks {
+		g.log.Info("🔍 [LOCK-DEBUG] Querying PostgreSQL for lock configuration",
+			"host", g.cfg.Host,
+			"port", g.cfg.Port,
+			"user", g.cfg.User)
+	}
+	
+	// Build connection string
+	connStr := fmt.Sprintf("host=%s port=%d user=%s password=%s dbname=postgres sslmode=disable",
+		g.cfg.Host, g.cfg.Port, g.cfg.User, g.cfg.Password)
+
+	db, err := sql.Open("pgx", connStr)
+	if err != nil {
+		if g.cfg.DebugLocks {
+			g.log.Warn("🔍 [LOCK-DEBUG] Failed to connect to PostgreSQL, using defaults",
+				"error", err,
+				"default_max_locks", 64,
+				"default_max_connections", 100)
+		}
+		return 64, 100 // PostgreSQL defaults
+	}
+	defer db.Close()
+
+	var maxLocks, maxConns int
+
+	// Get max_locks_per_transaction
+	err = db.QueryRowContext(ctx, "SHOW max_locks_per_transaction").Scan(&maxLocks)
+	if err != nil {
+		if g.cfg.DebugLocks {
+			g.log.Warn("🔍 [LOCK-DEBUG] Failed to query max_locks_per_transaction",
+				"error", err,
+				"using_default", 64)
+		}
+		maxLocks = 64 // PostgreSQL default
+	}
+
+	// Get max_connections
+	err = db.QueryRowContext(ctx, "SHOW max_connections").Scan(&maxConns)
+	if err != nil {
+		if g.cfg.DebugLocks {
+			g.log.Warn("🔍 [LOCK-DEBUG] Failed to query max_connections",
+				"error", err,
+				"using_default", 100)
+		}
+		maxConns = 100 // PostgreSQL default
+	}
+
+	if g.cfg.DebugLocks {
+		g.log.Info("🔍 [LOCK-DEBUG] Successfully retrieved PostgreSQL lock settings",
+			"max_locks_per_transaction", maxLocks,
+			"max_connections", maxConns,
+			"total_capacity", maxLocks*maxConns)
+	}
+
+	return maxLocks, maxConns
+}
+
+// findLargestDump finds the largest individual dump file
+func (g *LargeDBGuard) findLargestDump(dumpFiles []string) struct {
+	name string
+	size int64
+} {
+	var largest struct {
+		name string
+		size int64
+	}
+
+	for _, file := range dumpFiles {
+		if info, err := os.Stat(file); err == nil {
+			if info.Size() > largest.size {
+				largest.name = filepath.Base(file)
+				largest.size = info.Size()
+			}
+		}
+	}
+
+	return largest
+}
+
+// ApplyStrategy enforces the recommended strategy
+func (g *LargeDBGuard) ApplyStrategy(strategy *RestoreStrategy, cfg *config.Config) {
+	if !strategy.UseConservative {
+		return
+	}
+
+	// Override configuration to force conservative settings
+	if strategy.Jobs > 0 {
+		cfg.Jobs = strategy.Jobs
+	}
+	if strategy.ParallelDBs > 0 {
+		cfg.ClusterParallelism = strategy.ParallelDBs
+	}
+
+	g.log.Warn("🛡️  Large DB Guard ACTIVE",
+		"reason", strategy.Reason,
+		"jobs", cfg.Jobs,
+		"parallel_dbs", cfg.ClusterParallelism,
+		"expected_time", strategy.ExpectedTime)
+}
+
+// WarnUser displays prominent warning about single-threaded restore
+// In silent mode (TUI), this is skipped to prevent scrambled output
+func (g *LargeDBGuard) WarnUser(strategy *RestoreStrategy, silentMode bool) {
+	if !strategy.UseConservative {
+		return
+	}
+
+	// In TUI/silent mode, don't print to stdout - it causes scrambled output
+	if silentMode {
+		// Log the warning instead for debugging
+		g.log.Info("Large Database Protection Active",
+			"reason", strategy.Reason,
+			"jobs", strategy.Jobs,
+			"parallel_dbs", strategy.ParallelDBs,
+			"expected_time", strategy.ExpectedTime)
+		return
+	}
+
+	fmt.Println()
+	fmt.Println("╔══════════════════════════════════════════════════════════════╗")
+	fmt.Println("║          🛡️  LARGE DATABASE PROTECTION ACTIVE 🛡️             ║")
+	fmt.Println("╚══════════════════════════════════════════════════════════════╝")
+	fmt.Println()
+	fmt.Printf("  Reason: %s\n", strategy.Reason)
+	fmt.Println()
+	fmt.Println("  Strategy: SINGLE-THREADED RESTORE (Conservative Mode)")
+	fmt.Println("  • Prevents PostgreSQL lock exhaustion")
+	fmt.Println("  • Guarantees completion without 'out of shared memory' errors")
+	fmt.Println("  • Slower but 100% reliable")
+	fmt.Println()
+	if strategy.ExpectedTime != "" {
+		fmt.Printf("  Estimated Time: %s\n", strategy.ExpectedTime)
+		fmt.Println()
+	}
+	fmt.Println("  This restore will complete successfully. Please be patient.")
+	fmt.Println()
+	fmt.Println("═══════════════════════════════════════════════════════════════")
+	fmt.Println()
+}

internal/restore/preflight.go

@@ -0,0 +1,688 @@
+package restore
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/dustin/go-humanize"
+	"github.com/shirou/gopsutil/v3/mem"
+)
+
+// CalculateOptimalParallel returns the recommended number of parallel workers
+// based on available system resources (CPU cores and RAM).
+// This is a standalone function that can be called from anywhere.
+// Returns 0 if resources cannot be detected.
+func CalculateOptimalParallel() int {
+	cpuCores := runtime.NumCPU()
+
+	vmem, err := mem.VirtualMemory()
+	if err != nil {
+		// Fallback: use half of CPU cores if memory detection fails
+		if cpuCores > 1 {
+			return cpuCores / 2
+		}
+		return 1
+	}
+
+	memAvailableGB := float64(vmem.Available) / (1024 * 1024 * 1024)
+
+	// Each pg_restore worker needs approximately 2-4GB of RAM
+	// Use conservative 3GB per worker to avoid OOM
+	const memPerWorkerGB = 3.0
+
+	// Calculate limits
+	maxByMem := int(memAvailableGB / memPerWorkerGB)
+	maxByCPU := cpuCores
+
+	// Use the minimum of memory and CPU limits
+	recommended := maxByMem
+	if maxByCPU < recommended {
+		recommended = maxByCPU
+	}
+
+	// Apply sensible bounds
+	if recommended < 1 {
+		recommended = 1
+	}
+	if recommended > 16 {
+		recommended = 16 // Cap at 16 to avoid diminishing returns
+	}
+
+	// If memory pressure is high (>80%), reduce parallelism
+	if vmem.UsedPercent > 80 && recommended > 1 {
+		recommended = recommended / 2
+		if recommended < 1 {
+			recommended = 1
+		}
+	}
+
+	return recommended
+}
+
+// PreflightResult contains all preflight check results
+type PreflightResult struct {
+	// Linux system checks
+	Linux LinuxChecks
+
+	// PostgreSQL checks
+	PostgreSQL PostgreSQLChecks
+
+	// Archive analysis
+	Archive ArchiveChecks
+
+	// Overall status
+	CanProceed bool
+	Warnings   []string
+	Errors     []string
+}
+
+// LinuxChecks contains Linux kernel/system checks
+type LinuxChecks struct {
+	ShmMax              int64   // /proc/sys/kernel/shmmax
+	ShmAll              int64   // /proc/sys/kernel/shmall
+	MemTotal            uint64  // Total RAM in bytes
+	MemAvailable        uint64  // Available RAM in bytes
+	MemUsedPercent      float64 // Memory usage percentage
+	CPUCores            int     // Number of CPU cores
+	RecommendedParallel int     // Auto-calculated optimal parallel count
+	ShmMaxOK            bool    // Is shmmax sufficient?
+	ShmAllOK            bool    // Is shmall sufficient?
+	MemAvailableOK      bool    // Is available RAM sufficient?
+	IsLinux             bool    // Are we running on Linux?
+}
+
+// PostgreSQLChecks contains PostgreSQL configuration checks
+type PostgreSQLChecks struct {
+	MaxLocksPerTransaction  int    // Current setting
+	MaxPreparedTransactions int    // Current setting (affects lock capacity)
+	TotalLockCapacity       int    // Calculated: max_locks × (max_connections + max_prepared)
+	MaintenanceWorkMem      string // Current setting
+	SharedBuffers           string // Current setting (info only)
+	MaxConnections          int    // Current setting
+	Version                 string // PostgreSQL version
+	IsSuperuser             bool   // Can we modify settings?
+}
+
+// ArchiveChecks contains analysis of the backup archive
+type ArchiveChecks struct {
+	TotalDatabases       int
+	TotalBlobCount       int            // Estimated total BLOBs across all databases
+	BlobsByDB            map[string]int // BLOBs per database
+	HasLargeBlobs        bool           // Any DB with >1000 BLOBs?
+	RecommendedLockBoost int            // Calculated lock boost value
+}
+
+// RunPreflightChecks performs all preflight checks before a cluster restore
+func (e *Engine) RunPreflightChecks(ctx context.Context, dumpsDir string, entries []os.DirEntry) (*PreflightResult, error) {
+	result := &PreflightResult{
+		CanProceed: true,
+		Archive: ArchiveChecks{
+			BlobsByDB: make(map[string]int),
+		},
+	}
+
+	e.progress.Update("[PREFLIGHT] Running system checks...")
+	e.log.Info("Starting preflight checks for cluster restore")
+
+	// 1. System checks (cross-platform via gopsutil)
+	e.checkSystemResources(result)
+
+	// 2. PostgreSQL checks (via existing connection)
+	e.checkPostgreSQL(ctx, result)
+
+	// 3. Archive analysis (count BLOBs to scale lock boost)
+	e.analyzeArchive(ctx, dumpsDir, entries, result)
+
+	// 4. Calculate recommended settings
+	e.calculateRecommendations(result)
+
+	// 5. Print summary
+	e.printPreflightSummary(result)
+
+	return result, nil
+}
+
+// checkSystemResources uses gopsutil for cross-platform system checks
+func (e *Engine) checkSystemResources(result *PreflightResult) {
+	result.Linux.IsLinux = runtime.GOOS == "linux"
+	result.Linux.CPUCores = runtime.NumCPU()
+
+	// Get memory info (works on Linux, macOS, Windows, BSD)
+	if vmem, err := mem.VirtualMemory(); err == nil {
+		result.Linux.MemTotal = vmem.Total
+		result.Linux.MemAvailable = vmem.Available
+		result.Linux.MemUsedPercent = vmem.UsedPercent
+
+		// 4GB minimum available for large restores
+		result.Linux.MemAvailableOK = vmem.Available >= 4*1024*1024*1024
+
+		e.log.Info("System memory detected",
+			"total", humanize.Bytes(vmem.Total),
+			"available", humanize.Bytes(vmem.Available),
+			"used_percent", fmt.Sprintf("%.1f%%", vmem.UsedPercent))
+	} else {
+		e.log.Warn("Could not detect system memory", "error", err)
+	}
+
+	// Calculate recommended parallel based on resources
+	result.Linux.RecommendedParallel = e.calculateRecommendedParallel(result)
+
+	// Linux-specific kernel checks (shmmax, shmall)
+	if result.Linux.IsLinux {
+		e.checkLinuxKernel(result)
+	}
+
+	// Add warnings for insufficient resources
+	if !result.Linux.MemAvailableOK && result.Linux.MemAvailable > 0 {
+		result.Warnings = append(result.Warnings,
+			fmt.Sprintf("Available RAM is low: %s (recommend 4GB+ for large restores)",
+				humanize.Bytes(result.Linux.MemAvailable)))
+	}
+	if result.Linux.MemUsedPercent > 85 {
+		result.Warnings = append(result.Warnings,
+			fmt.Sprintf("High memory usage: %.1f%% - restore may cause OOM", result.Linux.MemUsedPercent))
+	}
+}
+
+// checkLinuxKernel reads Linux-specific kernel limits from /proc
+func (e *Engine) checkLinuxKernel(result *PreflightResult) {
+	// Read shmmax
+	if data, err := os.ReadFile("/proc/sys/kernel/shmmax"); err == nil {
+		val, _ := strconv.ParseInt(strings.TrimSpace(string(data)), 10, 64)
+		result.Linux.ShmMax = val
+		// 8GB minimum for large restores
+		result.Linux.ShmMaxOK = val >= 8*1024*1024*1024
+	}
+
+	// Read shmall (in pages, typically 4KB each)
+	if data, err := os.ReadFile("/proc/sys/kernel/shmall"); err == nil {
+		val, _ := strconv.ParseInt(strings.TrimSpace(string(data)), 10, 64)
+		result.Linux.ShmAll = val
+		// 2M pages = 8GB minimum
+		result.Linux.ShmAllOK = val >= 2*1024*1024
+	}
+
+	// Add kernel warnings
+	if !result.Linux.ShmMaxOK && result.Linux.ShmMax > 0 {
+		result.Warnings = append(result.Warnings,
+			fmt.Sprintf("Linux shmmax is low: %s (recommend 8GB+). Fix: sudo sysctl -w kernel.shmmax=17179869184",
+				humanize.Bytes(uint64(result.Linux.ShmMax))))
+	}
+	if !result.Linux.ShmAllOK && result.Linux.ShmAll > 0 {
+		result.Warnings = append(result.Warnings,
+			fmt.Sprintf("Linux shmall is low: %s pages (recommend 2M+). Fix: sudo sysctl -w kernel.shmall=4194304",
+				humanize.Comma(result.Linux.ShmAll)))
+	}
+}
+
+// checkPostgreSQL checks PostgreSQL configuration via SQL
+func (e *Engine) checkPostgreSQL(ctx context.Context, result *PreflightResult) {
+	connStr := e.buildConnString()
+	db, err := sql.Open("pgx", connStr)
+	if err != nil {
+		e.log.Warn("Could not connect to PostgreSQL for preflight checks", "error", err)
+		return
+	}
+	defer db.Close()
+
+	// Check max_locks_per_transaction
+	var maxLocks string
+	if err := db.QueryRowContext(ctx, "SHOW max_locks_per_transaction").Scan(&maxLocks); err == nil {
+		result.PostgreSQL.MaxLocksPerTransaction, _ = strconv.Atoi(maxLocks)
+	}
+
+	// Check maintenance_work_mem
+	db.QueryRowContext(ctx, "SHOW maintenance_work_mem").Scan(&result.PostgreSQL.MaintenanceWorkMem)
+
+	// Check shared_buffers (info only, can't change without restart)
+	db.QueryRowContext(ctx, "SHOW shared_buffers").Scan(&result.PostgreSQL.SharedBuffers)
+
+	// Check max_connections
+	var maxConn string
+	if err := db.QueryRowContext(ctx, "SHOW max_connections").Scan(&maxConn); err == nil {
+		result.PostgreSQL.MaxConnections, _ = strconv.Atoi(maxConn)
+	}
+
+	// Check version
+	db.QueryRowContext(ctx, "SHOW server_version").Scan(&result.PostgreSQL.Version)
+
+	// Check if superuser
+	var isSuperuser bool
+	if err := db.QueryRowContext(ctx, "SELECT current_setting('is_superuser') = 'on'").Scan(&isSuperuser); err == nil {
+		result.PostgreSQL.IsSuperuser = isSuperuser
+	}
+
+	// Check max_prepared_transactions for lock capacity calculation
+	var maxPreparedTxns string
+	if err := db.QueryRowContext(ctx, "SHOW max_prepared_transactions").Scan(&maxPreparedTxns); err == nil {
+		result.PostgreSQL.MaxPreparedTransactions, _ = strconv.Atoi(maxPreparedTxns)
+	}
+
+	// CRITICAL: Calculate TOTAL lock table capacity
+	// Formula: max_locks_per_transaction × (max_connections + max_prepared_transactions)
+	// This is THE key capacity metric for BLOB-heavy restores
+	maxConns := result.PostgreSQL.MaxConnections
+	if maxConns == 0 {
+		maxConns = 100 // default
+	}
+	maxPrepared := result.PostgreSQL.MaxPreparedTransactions
+	totalLockCapacity := result.PostgreSQL.MaxLocksPerTransaction * (maxConns + maxPrepared)
+	result.PostgreSQL.TotalLockCapacity = totalLockCapacity
+
+	e.log.Info("PostgreSQL lock table capacity",
+		"max_locks_per_transaction", result.PostgreSQL.MaxLocksPerTransaction,
+		"max_connections", maxConns,
+		"max_prepared_transactions", maxPrepared,
+		"total_lock_capacity", totalLockCapacity)
+
+	// CRITICAL: max_locks_per_transaction requires PostgreSQL RESTART to change!
+	// Warn users loudly about this - it's the #1 cause of "out of shared memory" errors
+	if result.PostgreSQL.MaxLocksPerTransaction < 256 {
+		e.log.Warn("PostgreSQL max_locks_per_transaction is LOW",
+			"current", result.PostgreSQL.MaxLocksPerTransaction,
+			"recommended", "256+",
+			"note", "REQUIRES PostgreSQL restart to change!")
+
+		result.Warnings = append(result.Warnings,
+			fmt.Sprintf("max_locks_per_transaction=%d is low (recommend 256+). "+
+				"This setting requires PostgreSQL RESTART to change. "+
+				"BLOB-heavy databases may fail with 'out of shared memory' error. "+
+				"Fix: Edit postgresql.conf, set max_locks_per_transaction=2048, then restart PostgreSQL.",
+				result.PostgreSQL.MaxLocksPerTransaction))
+	}
+
+	// NEW: Check total lock capacity is sufficient for typical BLOB operations
+	// Minimum recommended: 200,000 for moderate BLOB databases
+	minRecommendedCapacity := 200000
+	if totalLockCapacity < minRecommendedCapacity {
+		recommendedMaxLocks := minRecommendedCapacity / (maxConns + maxPrepared)
+		if recommendedMaxLocks < 4096 {
+			recommendedMaxLocks = 4096
+		}
+
+		e.log.Warn("Total lock table capacity is LOW for BLOB-heavy restores",
+			"current_capacity", totalLockCapacity,
+			"recommended", minRecommendedCapacity,
+			"current_max_locks", result.PostgreSQL.MaxLocksPerTransaction,
+			"current_max_connections", maxConns,
+			"recommended_max_locks", recommendedMaxLocks,
+			"note", "VMs with fewer connections need higher max_locks_per_transaction")
+
+		result.Warnings = append(result.Warnings,
+			fmt.Sprintf("Total lock capacity=%d is low (recommend %d+). "+
+				"Capacity = max_locks_per_transaction(%d) × max_connections(%d). "+
+				"If you reduced VM size/connections, increase max_locks_per_transaction to %d. "+
+				"Fix: ALTER SYSTEM SET max_locks_per_transaction = %d; then RESTART PostgreSQL.",
+				totalLockCapacity, minRecommendedCapacity,
+				result.PostgreSQL.MaxLocksPerTransaction, maxConns,
+				recommendedMaxLocks, recommendedMaxLocks))
+	}
+
+	// Parse shared_buffers and warn if very low
+	sharedBuffersMB := parseMemoryToMB(result.PostgreSQL.SharedBuffers)
+	if sharedBuffersMB > 0 && sharedBuffersMB < 256 {
+		result.Warnings = append(result.Warnings,
+			fmt.Sprintf("PostgreSQL shared_buffers is low: %s (recommend 1GB+, requires restart)",
+				result.PostgreSQL.SharedBuffers))
+	}
+}
+
+// analyzeArchive counts BLOBs in dump files to calculate optimal lock boost
+func (e *Engine) analyzeArchive(ctx context.Context, dumpsDir string, entries []os.DirEntry, result *PreflightResult) {
+	e.progress.Update("[PREFLIGHT] Analyzing archive for large objects...")
+
+	for _, entry := range entries {
+		if entry.IsDir() {
+			continue
+		}
+
+		result.Archive.TotalDatabases++
+		dumpFile := filepath.Join(dumpsDir, entry.Name())
+		dbName := strings.TrimSuffix(entry.Name(), ".dump")
+		dbName = strings.TrimSuffix(dbName, ".sql.gz")
+
+		// For custom format dumps, use pg_restore -l to count BLOBs
+		if strings.HasSuffix(entry.Name(), ".dump") {
+			blobCount := e.countBlobsInDump(ctx, dumpFile)
+			if blobCount > 0 {
+				result.Archive.BlobsByDB[dbName] = blobCount
+				result.Archive.TotalBlobCount += blobCount
+				if blobCount > 1000 {
+					result.Archive.HasLargeBlobs = true
+				}
+			}
+		}
+
+		// For SQL format, try to estimate from file content (sample check)
+		if strings.HasSuffix(entry.Name(), ".sql.gz") {
+			// Check for lo_create patterns in compressed SQL
+			blobCount := e.estimateBlobsInSQL(dumpFile)
+			if blobCount > 0 {
+				result.Archive.BlobsByDB[dbName] = blobCount
+				result.Archive.TotalBlobCount += blobCount
+				if blobCount > 1000 {
+					result.Archive.HasLargeBlobs = true
+				}
+			}
+		}
+	}
+}
+
+// countBlobsInDump uses pg_restore -l to count BLOB entries
+func (e *Engine) countBlobsInDump(ctx context.Context, dumpFile string) int {
+	ctx, cancel := context.WithTimeout(ctx, 30*time.Second)
+	defer cancel()
+
+	cmd := exec.CommandContext(ctx, "pg_restore", "-l", dumpFile)
+	output, err := cmd.Output()
+	if err != nil {
+		return 0
+	}
+
+	// Count lines containing BLOB/LARGE OBJECT
+	count := 0
+	for _, line := range strings.Split(string(output), "\n") {
+		if strings.Contains(line, "BLOB") || strings.Contains(line, "LARGE OBJECT") {
+			count++
+		}
+	}
+	return count
+}
+
+// estimateBlobsInSQL samples compressed SQL for lo_create patterns
+func (e *Engine) estimateBlobsInSQL(sqlFile string) int {
+	// Use zgrep for efficient searching in gzipped files
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	// Count lo_create calls (each = one large object)
+	cmd := exec.CommandContext(ctx, "zgrep", "-c", "lo_create", sqlFile)
+	output, err := cmd.Output()
+	if err != nil {
+		// Also try SELECT lo_create pattern
+		cmd2 := exec.CommandContext(ctx, "zgrep", "-c", "SELECT.*lo_create", sqlFile)
+		output, err = cmd2.Output()
+		if err != nil {
+			return 0
+		}
+	}
+
+	count, _ := strconv.Atoi(strings.TrimSpace(string(output)))
+	return count
+}
+
+// calculateRecommendations determines optimal settings based on analysis
+func (e *Engine) calculateRecommendations(result *PreflightResult) {
+	// Base lock boost
+	lockBoost := 2048
+
+	// Scale up based on BLOB count
+	if result.Archive.TotalBlobCount > 5000 {
+		lockBoost = 4096
+	}
+	if result.Archive.TotalBlobCount > 10000 {
+		lockBoost = 8192
+	}
+	if result.Archive.TotalBlobCount > 50000 {
+		lockBoost = 16384
+	}
+	if result.Archive.TotalBlobCount > 100000 {
+		lockBoost = 32768
+	}
+	if result.Archive.TotalBlobCount > 200000 {
+		lockBoost = 65536
+	}
+
+	// For extreme cases, calculate actual requirement
+	// Rule of thumb: ~1 lock per BLOB, divided by max_connections (default 100)
+	// Add 50% safety margin
+	maxConns := result.PostgreSQL.MaxConnections
+	if maxConns == 0 {
+		maxConns = 100 // default
+	}
+	calculatedLocks := (result.Archive.TotalBlobCount / maxConns) * 3 / 2 // 1.5x safety margin
+	if calculatedLocks > lockBoost {
+		lockBoost = calculatedLocks
+	}
+
+	result.Archive.RecommendedLockBoost = lockBoost
+
+	// CRITICAL: Check if current max_locks_per_transaction is dangerously low for this BLOB count
+	currentLocks := result.PostgreSQL.MaxLocksPerTransaction
+	if currentLocks > 0 && result.Archive.TotalBlobCount > 0 {
+		// Estimate max BLOBs we can handle: locks * max_connections
+		maxSafeBLOBs := currentLocks * maxConns
+
+		if result.Archive.TotalBlobCount > maxSafeBLOBs {
+			severity := "WARNING"
+			if result.Archive.TotalBlobCount > maxSafeBLOBs*2 {
+				severity = "CRITICAL"
+				result.CanProceed = false
+			}
+
+			e.log.Error(fmt.Sprintf("%s: max_locks_per_transaction too low for BLOB count", severity),
+				"current_max_locks", currentLocks,
+				"total_blobs", result.Archive.TotalBlobCount,
+				"max_safe_blobs", maxSafeBLOBs,
+				"recommended_max_locks", lockBoost)
+
+			result.Errors = append(result.Errors,
+				fmt.Sprintf("%s: Archive contains %s BLOBs but max_locks_per_transaction=%d can only safely handle ~%s. "+
+					"Increase max_locks_per_transaction to %d in postgresql.conf and RESTART PostgreSQL.",
+					severity,
+					humanize.Comma(int64(result.Archive.TotalBlobCount)),
+					currentLocks,
+					humanize.Comma(int64(maxSafeBLOBs)),
+					lockBoost))
+		}
+	}
+
+	// Log recommendation
+	e.log.Info("Calculated recommended lock boost",
+		"total_blobs", result.Archive.TotalBlobCount,
+		"recommended_locks", lockBoost)
+}
+
+// calculateRecommendedParallel determines optimal parallelism based on system resources
+// Returns the recommended number of parallel workers for pg_restore
+func (e *Engine) calculateRecommendedParallel(result *PreflightResult) int {
+	cpuCores := result.Linux.CPUCores
+	if cpuCores == 0 {
+		cpuCores = runtime.NumCPU()
+	}
+
+	memAvailableGB := float64(result.Linux.MemAvailable) / (1024 * 1024 * 1024)
+
+	// Each pg_restore worker needs approximately 2-4GB of RAM
+	// Use conservative 3GB per worker to avoid OOM
+	const memPerWorkerGB = 3.0
+
+	// Calculate limits
+	maxByMem := int(memAvailableGB / memPerWorkerGB)
+	maxByCPU := cpuCores
+
+	// Use the minimum of memory and CPU limits
+	recommended := maxByMem
+	if maxByCPU < recommended {
+		recommended = maxByCPU
+	}
+
+	// Apply sensible bounds
+	if recommended < 1 {
+		recommended = 1
+	}
+	if recommended > 16 {
+		recommended = 16 // Cap at 16 to avoid diminishing returns
+	}
+
+	// If memory pressure is high (>80%), reduce parallelism
+	if result.Linux.MemUsedPercent > 80 && recommended > 1 {
+		recommended = recommended / 2
+		if recommended < 1 {
+			recommended = 1
+		}
+	}
+
+	e.log.Info("Calculated recommended parallel",
+		"cpu_cores", cpuCores,
+		"mem_available_gb", fmt.Sprintf("%.1f", memAvailableGB),
+		"max_by_mem", maxByMem,
+		"max_by_cpu", maxByCPU,
+		"recommended", recommended)
+
+	return recommended
+}
+
+// printPreflightSummary prints a nice summary of all checks
+// In silent mode (TUI), this is skipped and results are logged instead
+func (e *Engine) printPreflightSummary(result *PreflightResult) {
+	// In TUI/silent mode, don't print to stdout - it causes scrambled output
+	if e.silentMode {
+		// Log summary instead for debugging
+		e.log.Info("Preflight checks complete",
+			"can_proceed", result.CanProceed,
+			"warnings", len(result.Warnings),
+			"errors", len(result.Errors),
+			"total_blobs", result.Archive.TotalBlobCount,
+			"recommended_locks", result.Archive.RecommendedLockBoost)
+		return
+	}
+
+	fmt.Println()
+	fmt.Println(strings.Repeat("─", 60))
+	fmt.Println("                    PREFLIGHT CHECKS")
+	fmt.Println(strings.Repeat("─", 60))
+
+	// System checks (cross-platform)
+	fmt.Println("\n  System Resources:")
+	printCheck("Total RAM", humanize.Bytes(result.Linux.MemTotal), true)
+	printCheck("Available RAM", humanize.Bytes(result.Linux.MemAvailable), result.Linux.MemAvailableOK || result.Linux.MemAvailable == 0)
+	printCheck("Memory Usage", fmt.Sprintf("%.1f%%", result.Linux.MemUsedPercent), result.Linux.MemUsedPercent < 85)
+	printCheck("CPU Cores", fmt.Sprintf("%d", result.Linux.CPUCores), true)
+	printCheck("Recommended Parallel", fmt.Sprintf("%d (auto-calculated)", result.Linux.RecommendedParallel), true)
+
+	// Linux-specific kernel checks
+	if result.Linux.IsLinux && result.Linux.ShmMax > 0 {
+		fmt.Println("\n  Linux Kernel:")
+		printCheck("shmmax", humanize.Bytes(uint64(result.Linux.ShmMax)), result.Linux.ShmMaxOK)
+		printCheck("shmall", humanize.Comma(result.Linux.ShmAll)+" pages", result.Linux.ShmAllOK)
+	}
+
+	// PostgreSQL checks
+	fmt.Println("\n  PostgreSQL:")
+	printCheck("Version", result.PostgreSQL.Version, true)
+	printCheck("max_locks_per_transaction", fmt.Sprintf("%s → %s (auto-boost)",
+		humanize.Comma(int64(result.PostgreSQL.MaxLocksPerTransaction)),
+		humanize.Comma(int64(result.Archive.RecommendedLockBoost))),
+		true)
+	printCheck("max_connections", humanize.Comma(int64(result.PostgreSQL.MaxConnections)), true)
+	// Show total lock capacity with warning if low
+	totalCapacityOK := result.PostgreSQL.TotalLockCapacity >= 200000
+	printCheck("Total Lock Capacity",
+		fmt.Sprintf("%s (max_locks × max_conns)",
+			humanize.Comma(int64(result.PostgreSQL.TotalLockCapacity))),
+		totalCapacityOK)
+	printCheck("maintenance_work_mem", fmt.Sprintf("%s → 2GB (auto-boost)",
+		result.PostgreSQL.MaintenanceWorkMem), true)
+	printInfo("shared_buffers", result.PostgreSQL.SharedBuffers)
+	printCheck("Superuser", fmt.Sprintf("%v", result.PostgreSQL.IsSuperuser), result.PostgreSQL.IsSuperuser)
+
+	// Archive analysis
+	fmt.Println("\n  Archive Analysis:")
+	printInfo("Total databases", humanize.Comma(int64(result.Archive.TotalDatabases)))
+	printInfo("Total BLOBs detected", humanize.Comma(int64(result.Archive.TotalBlobCount)))
+	if len(result.Archive.BlobsByDB) > 0 {
+		fmt.Println("    Databases with BLOBs:")
+		for db, count := range result.Archive.BlobsByDB {
+			status := "✓"
+			if count > 1000 {
+				status := "⚠"
+				_ = status
+			}
+			fmt.Printf("      %s %s: %s BLOBs\n", status, db, humanize.Comma(int64(count)))
+		}
+	}
+
+	// Errors (blocking issues)
+	if len(result.Errors) > 0 {
+		fmt.Println("\n  ✗ ERRORS (must fix before proceeding):")
+		for _, e := range result.Errors {
+			fmt.Printf("    • %s\n", e)
+		}
+	}
+
+	// Warnings
+	if len(result.Warnings) > 0 {
+		fmt.Println("\n  ⚠ Warnings:")
+		for _, w := range result.Warnings {
+			fmt.Printf("    • %s\n", w)
+		}
+	}
+
+	// Final status
+	fmt.Println()
+	if !result.CanProceed {
+		fmt.Println("  ┌─────────────────────────────────────────────────────────┐")
+		fmt.Println("  │  ✗ PREFLIGHT FAILED - Cannot proceed with restore       │")
+		fmt.Println("  │    Fix the errors above and try again.                  │")
+		fmt.Println("  └─────────────────────────────────────────────────────────┘")
+	} else if len(result.Warnings) > 0 {
+		fmt.Println("  ┌─────────────────────────────────────────────────────────┐")
+		fmt.Println("  │  ⚠ PREFLIGHT PASSED WITH WARNINGS - Proceed with care   │")
+		fmt.Println("  └─────────────────────────────────────────────────────────┘")
+	} else {
+		fmt.Println("  ┌─────────────────────────────────────────────────────────┐")
+		fmt.Println("  │  ✓ PREFLIGHT PASSED - Ready to restore                  │")
+		fmt.Println("  └─────────────────────────────────────────────────────────┘")
+	}
+
+	fmt.Println(strings.Repeat("─", 60))
+	fmt.Println()
+}
+
+func printCheck(name, value string, ok bool) {
+	status := "✓"
+	if !ok {
+		status = "⚠"
+	}
+	fmt.Printf("    %s %s: %s\n", status, name, value)
+}
+
+func printInfo(name, value string) {
+	fmt.Printf("    ℹ %s: %s\n", name, value)
+}
+
+func parseMemoryToMB(memStr string) int {
+	memStr = strings.ToUpper(strings.TrimSpace(memStr))
+	var value int
+	var unit string
+	fmt.Sscanf(memStr, "%d%s", &value, &unit)
+
+	switch {
+	case strings.HasPrefix(unit, "G"):
+		return value * 1024
+	case strings.HasPrefix(unit, "M"):
+		return value
+	case strings.HasPrefix(unit, "K"):
+		return value / 1024
+	default:
+		return value / (1024 * 1024) // Assume bytes
+	}
+}
+
+func (e *Engine) buildConnString() string {
+	if e.cfg.Host == "localhost" || e.cfg.Host == "" {
+		return fmt.Sprintf("user=%s password=%s dbname=postgres sslmode=disable",
+			e.cfg.User, e.cfg.Password)
+	}
+	return fmt.Sprintf("host=%s port=%d user=%s password=%s dbname=postgres sslmode=disable",
+		e.cfg.Host, e.cfg.Port, e.cfg.User, e.cfg.Password)
+}

internal/restore/safety.go

@@ -190,7 +190,7 @@ func (s *Safety) validateSQLScriptGz(path string) error {
 	return fmt.Errorf("does not appear to contain SQL content")
 }
 
-// validateTarGz validates tar.gz archive
+// validateTarGz validates tar.gz archive with fast stream-based checks
 func (s *Safety) validateTarGz(path string) error {
 	file, err := os.Open(path)
 	if err != nil {
@@ -205,11 +205,40 @@ func (s *Safety) validateTarGz(path string) error {
 		return fmt.Errorf("cannot read file header")
 	}
 
-	if buffer[0] == 0x1f && buffer[1] == 0x8b {
-		return nil // Valid gzip header
+	if buffer[0] != 0x1f || buffer[1] != 0x8b {
+		return fmt.Errorf("not a valid gzip file")
 	}
 
-	return fmt.Errorf("not a valid gzip file")
+	// Quick tar structure validation (stream-based, no full extraction)
+	// Reset to start and decompress first few KB to check tar header
+	file.Seek(0, 0)
+	gzReader, err := gzip.NewReader(file)
+	if err != nil {
+		return fmt.Errorf("gzip corruption detected: %w", err)
+	}
+	defer gzReader.Close()
+
+	// Read first tar header to verify it's a valid tar archive
+	headerBuf := make([]byte, 512) // Tar header is 512 bytes
+	n, err = gzReader.Read(headerBuf)
+	if err != nil && err != io.EOF {
+		return fmt.Errorf("failed to read tar header: %w", err)
+	}
+	if n < 512 {
+		return fmt.Errorf("archive too small or corrupted")
+	}
+
+	// Check tar magic ("ustar\0" at offset 257)
+	if len(headerBuf) >= 263 {
+		magic := string(headerBuf[257:262])
+		if magic != "ustar" {
+			s.log.Debug("No tar magic found, but may still be valid tar", "magic", magic)
+			// Don't fail - some tar implementations don't use magic
+		}
+	}
+
+	s.log.Debug("Cluster archive validation passed (stream-based check)")
+	return nil // Valid gzip + tar structure
 }
 
 // containsSQLKeywords checks if content contains SQL keywords
@@ -228,9 +257,51 @@ func containsSQLKeywords(content string) bool {
 	return false
 }
 
+// ValidateAndExtractCluster performs validation and pre-extraction for cluster restore
+// Returns path to extracted directory (in temp location) to avoid double-extraction
+// Caller must clean up the returned directory with os.RemoveAll() when done
+func (s *Safety) ValidateAndExtractCluster(ctx context.Context, archivePath string) (extractedDir string, err error) {
+	// First validate archive integrity (fast stream check)
+	if err := s.ValidateArchive(archivePath); err != nil {
+		return "", fmt.Errorf("archive validation failed: %w", err)
+	}
+
+	// Create temp directory for extraction in configured WorkDir
+	workDir := s.cfg.GetEffectiveWorkDir()
+	if workDir == "" {
+		workDir = s.cfg.BackupDir
+	}
+
+	tempDir, err := os.MkdirTemp(workDir, "dbbackup-cluster-extract-*")
+	if err != nil {
+		return "", fmt.Errorf("failed to create temp extraction directory in %s: %w", workDir, err)
+	}
+
+	// Extract using tar command (fastest method)
+	s.log.Info("Pre-extracting cluster archive for validation and restore",
+		"archive", archivePath,
+		"dest", tempDir)
+
+	cmd := exec.CommandContext(ctx, "tar", "-xzf", archivePath, "-C", tempDir)
+	output, err := cmd.CombinedOutput()
+	if err != nil {
+		os.RemoveAll(tempDir) // Cleanup on failure
+		return "", fmt.Errorf("extraction failed: %w: %s", err, string(output))
+	}
+
+	s.log.Info("Cluster archive extracted successfully", "location", tempDir)
+	return tempDir, nil
+}
+
 // CheckDiskSpace verifies sufficient disk space for restore
+// Uses the effective work directory (WorkDir if set, otherwise BackupDir) since
+// that's where extraction actually happens for large databases
 func (s *Safety) CheckDiskSpace(archivePath string, multiplier float64) error {
-	return s.CheckDiskSpaceAt(archivePath, s.cfg.BackupDir, multiplier)
+	checkDir := s.cfg.GetEffectiveWorkDir()
+	if checkDir == "" {
+		checkDir = s.cfg.BackupDir
+	}
+	return s.CheckDiskSpaceAt(archivePath, checkDir, multiplier)
 }
 
 // CheckDiskSpaceAt verifies sufficient disk space at a specific directory
@@ -249,7 +320,9 @@ func (s *Safety) CheckDiskSpaceAt(archivePath string, checkDir string, multiplie
 	// Get available disk space
 	availableSpace, err := getDiskSpace(checkDir)
 	if err != nil {
-		s.log.Warn("Cannot check disk space", "error", err)
+		if s.log != nil {
+			s.log.Warn("Cannot check disk space", "error", err)
+		}
 		return nil // Don't fail if we can't check
 	}
 
@@ -272,10 +345,12 @@ func (s *Safety) CheckDiskSpaceAt(archivePath string, checkDir string, multiplie
 			checkDir)
 	}
 
-	s.log.Info("Disk space check passed",
-		"location", checkDir,
-		"required", FormatBytes(requiredSpace),
-		"available", FormatBytes(availableSpace))
+	if s.log != nil {
+		s.log.Info("Disk space check passed",
+			"location", checkDir,
+			"required", FormatBytes(requiredSpace),
+			"available", FormatBytes(availableSpace))
+	}
 
 	return nil
 }
@@ -324,10 +399,12 @@ func (s *Safety) checkPostgresDatabaseExists(ctx context.Context, dbName string)
 		"-tAc", fmt.Sprintf("SELECT 1 FROM pg_database WHERE datname='%s'", dbName),
 	}
 
-	// Only add -h flag if host is not localhost (to use Unix socket for peer auth)
-	if s.cfg.Host != "localhost" && s.cfg.Host != "127.0.0.1" && s.cfg.Host != "" {
-		args = append([]string{"-h", s.cfg.Host}, args...)
+	// Always add -h flag for explicit host connection (required for password auth)
+	host := s.cfg.Host
+	if host == "" {
+		host = "localhost"
 	}
+	args = append([]string{"-h", host}, args...)
 
 	cmd := exec.CommandContext(ctx, "psql", args...)
 
@@ -336,9 +413,9 @@ func (s *Safety) checkPostgresDatabaseExists(ctx context.Context, dbName string)
 		cmd.Env = append(os.Environ(), fmt.Sprintf("PGPASSWORD=%s", s.cfg.Password))
 	}
 
-	output, err := cmd.Output()
+	output, err := cmd.CombinedOutput()
 	if err != nil {
-		return false, fmt.Errorf("failed to check database existence: %w", err)
+		return false, fmt.Errorf("failed to check database existence: %w (output: %s)", err, strings.TrimSpace(string(output)))
 	}
 
 	return strings.TrimSpace(string(output)) == "1", nil
@@ -395,21 +472,29 @@ func (s *Safety) listPostgresUserDatabases(ctx context.Context) ([]string, error
 		"-c", query,
 	}
 
-	// Only add -h flag if host is not localhost (to use Unix socket for peer auth)
-	if s.cfg.Host != "localhost" && s.cfg.Host != "127.0.0.1" && s.cfg.Host != "" {
-		args = append([]string{"-h", s.cfg.Host}, args...)
+	// Always add -h flag for explicit host connection (required for password auth)
+	// Empty or unset host defaults to localhost
+	host := s.cfg.Host
+	if host == "" {
+		host = "localhost"
 	}
+	args = append([]string{"-h", host}, args...)
 
 	cmd := exec.CommandContext(ctx, "psql", args...)
 
-	// Set password if provided
+	// Set password - check config first, then environment
+	env := os.Environ()
 	if s.cfg.Password != "" {
-		cmd.Env = append(os.Environ(), fmt.Sprintf("PGPASSWORD=%s", s.cfg.Password))
+		env = append(env, fmt.Sprintf("PGPASSWORD=%s", s.cfg.Password))
 	}
+	cmd.Env = env
 
-	output, err := cmd.Output()
+	s.log.Debug("Listing PostgreSQL databases", "host", host, "port", s.cfg.Port, "user", s.cfg.User)
+
+	output, err := cmd.CombinedOutput()
 	if err != nil {
-		return nil, fmt.Errorf("failed to list databases: %w", err)
+		// Include psql output in error for debugging
+		return nil, fmt.Errorf("failed to list databases: %w (output: %s)", err, strings.TrimSpace(string(output)))
 	}
 
 	// Parse output
@@ -422,6 +507,8 @@ func (s *Safety) listPostgresUserDatabases(ctx context.Context) ([]string, error
 		}
 	}
 
+	s.log.Debug("Found user databases", "count", len(databases), "databases", databases, "raw_output", string(output))
+
 	return databases, nil
 }
 

internal/restore/version_check.go

@@ -6,6 +6,7 @@ import (
 	"os/exec"
 	"regexp"
 	"strconv"
+	"time"
 
 	"dbbackup/internal/database"
 )
@@ -47,8 +48,13 @@ func ParsePostgreSQLVersion(versionStr string) (*VersionInfo, error) {
 
 // GetDumpFileVersion extracts the PostgreSQL version from a dump file
 // Uses pg_restore -l to read the dump metadata
+// Uses a 30-second timeout to avoid blocking on large files
 func GetDumpFileVersion(dumpPath string) (*VersionInfo, error) {
-	cmd := exec.Command("pg_restore", "-l", dumpPath)
+	// Use a timeout context to prevent blocking on very large dump files
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	cmd := exec.CommandContext(ctx, "pg_restore", "-l", dumpPath)
 	output, err := cmd.CombinedOutput()
 	if err != nil {
 		return nil, fmt.Errorf("failed to read dump file metadata: %w (output: %s)", err, string(output))

internal/security/privileges.go

@@ -25,7 +25,7 @@ func (pc *PrivilegeChecker) CheckAndWarn(allowRoot bool) error {
 	isRoot, user := pc.isRunningAsRoot()
 
 	if isRoot {
-		pc.log.Warn("⚠️  Running with elevated privileges (root/Administrator)")
+		pc.log.Warn("[WARN] Running with elevated privileges (root/Administrator)")
 		pc.log.Warn("Security recommendation: Create a dedicated backup user with minimal privileges")
 
 		if !allowRoot {

internal/security/resources.go

@@ -64,7 +64,7 @@ func (rc *ResourceChecker) ValidateResourcesForBackup(estimatedSize int64) error
 
 	if len(warnings) > 0 {
 		for _, warning := range warnings {
-			rc.log.Warn("⚠️  Resource constraint: " + warning)
+			rc.log.Warn("[WARN] Resource constraint: " + warning)
 		}
 		rc.log.Info("Continuing backup operation (warnings are informational)")
 	}

internal/security/resources_unix.go

@@ -22,7 +22,7 @@ func (rc *ResourceChecker) checkPlatformLimits() (*ResourceLimits, error) {
 		rc.log.Debug("Resource limit: max open files", "limit", rLimit.Cur, "max", rLimit.Max)
 
 		if rLimit.Cur < 1024 {
-			rc.log.Warn("⚠️  Low file descriptor limit detected",
+			rc.log.Warn("[WARN] Low file descriptor limit detected",
 				"current", rLimit.Cur,
 				"recommended", 4096,
 				"hint", "Increase with: ulimit -n 4096")

internal/tui/archive_browser.go

@@ -209,13 +209,14 @@ func (m ArchiveBrowserModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 
 				// Validate selection based on mode
 				if m.mode == "restore-cluster" && !selected.Format.IsClusterBackup() {
-					m.message = errorStyle.Render("❌ Please select a cluster backup (.tar.gz)")
+					m.message = errorStyle.Render("[FAIL] Please select a cluster backup (.tar.gz)")
 					return m, nil
 				}
 
 				if m.mode == "restore-single" && selected.Format.IsClusterBackup() {
-					m.message = errorStyle.Render("❌ Please select a single database backup")
-					return m, nil
+					// Cluster backup selected in single restore mode - offer to select individual database
+					clusterSelector := NewClusterDatabaseSelector(m.config, m.logger, m, m.ctx, selected, "single", false)
+					return clusterSelector, clusterSelector.Init()
 				}
 
 				// Open restore preview
@@ -223,11 +224,23 @@ func (m ArchiveBrowserModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 				return preview, preview.Init()
 			}
 
+		case "s":
+			// Select single database from cluster (shortcut key)
+			if len(m.archives) > 0 && m.cursor < len(m.archives) {
+				selected := m.archives[m.cursor]
+				if selected.Format.IsClusterBackup() {
+					clusterSelector := NewClusterDatabaseSelector(m.config, m.logger, m, m.ctx, selected, "single", false)
+					return clusterSelector, clusterSelector.Init()
+				} else {
+					m.message = infoStyle.Render("💡 [s] only works with cluster backups")
+				}
+			}
+
 		case "i":
 			// Show detailed info
 			if len(m.archives) > 0 && m.cursor < len(m.archives) {
 				selected := m.archives[m.cursor]
-				m.message = fmt.Sprintf("📦 %s | Format: %s | Size: %s | Modified: %s",
+				m.message = fmt.Sprintf("[PKG] %s | Format: %s | Size: %s | Modified: %s",
 					selected.Name,
 					selected.Format.String(),
 					formatSize(selected.Size),
@@ -251,13 +264,13 @@ func (m ArchiveBrowserModel) View() string {
 	var s strings.Builder
 
 	// Header
-	title := "📦 Backup Archives"
+	title := "[SELECT] Backup Archives"
 	if m.mode == "restore-single" {
-		title = "📦 Select Archive to Restore (Single Database)"
+		title = "[SELECT] Select Archive to Restore (Single Database)"
 	} else if m.mode == "restore-cluster" {
-		title = "📦 Select Archive to Restore (Cluster)"
+		title = "[SELECT] Select Archive to Restore (Cluster)"
 	} else if m.mode == "diagnose" {
-		title = "🔍 Select Archive to Diagnose"
+		title = "[SELECT] Select Archive to Diagnose"
 	}
 
 	s.WriteString(titleStyle.Render(title))
@@ -269,7 +282,7 @@ func (m ArchiveBrowserModel) View() string {
 	}
 
 	if m.err != nil {
-		s.WriteString(errorStyle.Render(fmt.Sprintf("❌ Error: %v", m.err)))
+		s.WriteString(errorStyle.Render(fmt.Sprintf("[FAIL] Error: %v", m.err)))
 		s.WriteString("\n\n")
 		s.WriteString(infoStyle.Render("Press Esc to go back"))
 		return s.String()
@@ -293,7 +306,7 @@ func (m ArchiveBrowserModel) View() string {
 	s.WriteString(archiveHeaderStyle.Render(fmt.Sprintf("%-40s %-25s %-12s %-20s",
 		"FILENAME", "FORMAT", "SIZE", "MODIFIED")))
 	s.WriteString("\n")
-	s.WriteString(strings.Repeat("─", 100))
+	s.WriteString(strings.Repeat("-", 100))
 	s.WriteString("\n")
 
 	// Show archives (limit to visible area)
@@ -317,13 +330,13 @@ func (m ArchiveBrowserModel) View() string {
 		}
 
 		// Color code based on validity and age
-		statusIcon := "✓"
+		statusIcon := "[+]"
 		if !archive.Valid {
-			statusIcon = "✗"
+			statusIcon = "[-]"
 			style = archiveInvalidStyle
 		} else if time.Since(archive.Modified) > 30*24*time.Hour {
 			style = archiveOldStyle
-			statusIcon = "⚠"
+			statusIcon = "[WARN]"
 		}
 
 		filename := truncate(archive.Name, 38)
@@ -351,7 +364,7 @@ func (m ArchiveBrowserModel) View() string {
 	s.WriteString(infoStyle.Render(fmt.Sprintf("Total: %d archive(s) | Selected: %d/%d",
 		len(m.archives), m.cursor+1, len(m.archives))))
 	s.WriteString("\n")
-	s.WriteString(infoStyle.Render("⌨️  ↑/↓: Navigate | Enter: Select | d: Diagnose | f: Filter | i: Info | Esc: Back"))
+	s.WriteString(infoStyle.Render("[KEY]  ↑/↓: Navigate | Enter: Select | s: Single DB from Cluster | d: Diagnose | f: Filter | i: Info | Esc: Back"))
 
 	return s.String()
 }