release: v4.0.0

🎉 Version 4.0.0 - Stable Release

Major Features Now Fully Working:
- Incremental backups (--backup-type incremental --base-backup <path>)
- Notification system (SMTP + webhook via environment variables)
- Full enterprise deployment examples (Ansible, K8s, Terraform)

This release represents feature-complete, production-ready state.

Breaking Changes from v3.x:
- CLI flags synced with documentation
- Notify package now active (reads NOTIFY_* env vars)

Tested:
- All unit tests pass
- go vet clean
- Cross-platform builds successful

.gitea/workflows/ci.yml

@@ -1,4 +1,6 @@
 # CI/CD Pipeline for dbbackup
+# Main repo: Gitea (git.uuxo.net)
+# Mirror: GitHub (github.com/PlusOne/dbbackup)
 name: CI/CD
 
 on:
@@ -35,6 +37,90 @@ jobs:
       - name: Coverage summary
         run: go tool cover -func=coverage.out | tail -1
 
+  test-integration:
+    name: Integration Tests
+    runs-on: ubuntu-latest
+    needs: [test]
+    container:
+      image: golang:1.24-bookworm
+    services:
+      postgres:
+        image: postgres:15
+        env:
+          POSTGRES_PASSWORD: postgres
+          POSTGRES_DB: testdb
+        ports: ['5432:5432']
+      mysql:
+        image: mysql:8
+        env:
+          MYSQL_ROOT_PASSWORD: mysql
+          MYSQL_DATABASE: testdb
+        ports: ['3306:3306']
+    steps:
+      - name: Checkout code
+        env:
+          TOKEN: ${{ github.token }}
+        run: |
+          apt-get update && apt-get install -y -qq git ca-certificates postgresql-client default-mysql-client
+          git config --global --add safe.directory "$GITHUB_WORKSPACE"
+          git init
+          git remote add origin "https://${TOKEN}@git.uuxo.net/${GITHUB_REPOSITORY}.git"
+          git fetch --depth=1 origin "${GITHUB_SHA}"
+          git checkout FETCH_HEAD
+
+      - name: Wait for databases
+        run: |
+          echo "Waiting for PostgreSQL..."
+          for i in $(seq 1 30); do
+            pg_isready -h postgres -p 5432 && break || sleep 1
+          done
+          echo "Waiting for MySQL..."
+          for i in $(seq 1 30); do
+            mysqladmin ping -h mysql -u root -pmysql --silent && break || sleep 1
+          done
+
+      - name: Build dbbackup
+        run: go build -o dbbackup .
+
+      - name: Test PostgreSQL backup/restore
+        env:
+          PGHOST: postgres
+          PGUSER: postgres
+          PGPASSWORD: postgres
+        run: |
+          # Create test data
+          psql -h postgres -c "CREATE TABLE test_table (id SERIAL PRIMARY KEY, name TEXT);"
+          psql -h postgres -c "INSERT INTO test_table (name) VALUES ('test1'), ('test2'), ('test3');"
+          # Run backup - database name is positional argument
+          mkdir -p /tmp/backups
+          ./dbbackup backup single testdb --db-type postgres --host postgres --user postgres --password postgres --backup-dir /tmp/backups --no-config --allow-root
+          # Verify backup file exists
+          ls -la /tmp/backups/
+
+      - name: Test MySQL backup/restore
+        env:
+          MYSQL_HOST: mysql
+          MYSQL_USER: root
+          MYSQL_PASSWORD: mysql
+        run: |
+          # Create test data
+          mysql -h mysql -u root -pmysql testdb -e "CREATE TABLE test_table (id INT AUTO_INCREMENT PRIMARY KEY, name VARCHAR(255));"
+          mysql -h mysql -u root -pmysql testdb -e "INSERT INTO test_table (name) VALUES ('test1'), ('test2'), ('test3');"
+          # Run backup - positional arg is db to backup, --database is connection db
+          mkdir -p /tmp/mysql_backups
+          ./dbbackup backup single testdb --db-type mysql --host mysql --port 3306 --user root --password mysql --database testdb --backup-dir /tmp/mysql_backups --no-config --allow-root
+          # Verify backup file exists
+          ls -la /tmp/mysql_backups/
+
+      - name: Test verify-locks command
+        env:
+          PGHOST: postgres
+          PGUSER: postgres
+          PGPASSWORD: postgres
+        run: |
+          ./dbbackup verify-locks --host postgres --db-type postgres --no-config --allow-root | tee verify-locks.out
+          grep -q 'max_locks_per_transaction' verify-locks.out
+
   lint:
     name: Lint
     runs-on: ubuntu-latest
@@ -54,43 +140,107 @@ 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:
-    name: Build
+  build-and-release:
+    name: Build & Release
     runs-on: ubuntu-latest
     needs: [test, lint]
+    if: startsWith(github.ref, 'refs/tags/v')
     container:
       image: golang:1.24-bookworm
-    strategy:
-      matrix:
-        include:
-          - goos: linux
-            goarch: amd64
-          - goos: linux
-            goarch: arm64
-          - goos: darwin
-            goarch: amd64
-          - goos: darwin
-            goarch: arm64
     steps:
       - name: Checkout code
         env:
           TOKEN: ${{ github.token }}
         run: |
-          apt-get update && apt-get install -y -qq git ca-certificates
+          apt-get update && apt-get install -y -qq git ca-certificates curl jq
           git config --global --add safe.directory "$GITHUB_WORKSPACE"
           git init
           git remote add origin "https://${TOKEN}@git.uuxo.net/${GITHUB_REPOSITORY}.git"
           git fetch --depth=1 origin "${GITHUB_SHA}"
+          git fetch --tags origin
           git checkout FETCH_HEAD
 
-      - name: Build
-        env:
-          GOOS: ${{ matrix.goos }}
-          GOARCH: ${{ matrix.goarch }}
-          CGO_ENABLED: "0"
+      - name: Build all platforms
         run: |
-          go build -ldflags="-s -w" -o dbbackup-${GOOS}-${GOARCH} .
-          ls -lh dbbackup-*
+          mkdir -p release
+          
+          # Install cross-compilation tools for CGO
+          apt-get update && apt-get install -y -qq gcc-aarch64-linux-gnu
+          
+          # 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 .
+          
+          # 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 (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 (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:"
+          ls -lh release/
+
+      - name: Create Gitea Release
+        env:
+          GITEA_TOKEN: ${{ github.token }}
+        run: |
+          TAG=${GITHUB_REF#refs/tags/}
+          
+          echo "Creating Gitea release for ${TAG}..."
+          echo "Debug: GITHUB_REPOSITORY=${GITHUB_REPOSITORY}"
+          echo "Debug: TAG=${TAG}"
+          
+          # Simple body without special characters
+          BODY="Download binaries for your platform"
+          
+          # Create release via API with simple inline JSON
+          RESPONSE=$(curl -s -w "\n%{http_code}" -X POST \
+            -H "Authorization: token ${GITEA_TOKEN}" \
+            -H "Content-Type: application/json" \
+            -d '{"tag_name":"'"${TAG}"'","name":"'"${TAG}"'","body":"'"${BODY}"'","draft":false,"prerelease":false}' \
+            "https://git.uuxo.net/api/v1/repos/${GITHUB_REPOSITORY}/releases")
+          
+          HTTP_CODE=$(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"
+            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 $FILENAME..."
+            UPLOAD_RESPONSE=$(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}")
+            echo "Upload response: $UPLOAD_RESPONSE"
+          done
+          
+          echo "Gitea release complete!"
+          echo "GitHub mirror complete!"

.gitea/workflows/ci.yml.bak-20260123

@@ -0,0 +1,75 @@
+# Backup of .gitea/workflows/ci.yml — created before adding integration-verify-locks job
+# timestamp: 2026-01-23
+
+# CI/CD Pipeline for dbbackup (backup copy)
+# Source: .gitea/workflows/ci.yml
+# Created: 2026-01-23
+
+name: CI/CD
+
+on:
+  push:
+    branches: [main, master, develop]
+    tags: ['v*']
+  pull_request:
+    branches: [main, master]
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    container:
+      image: golang:1.24-bookworm
+    steps:
+      - name: Checkout code
+        env:
+          TOKEN: ${{ github.token }}
+        run: |
+          apt-get update && apt-get install -y -qq git ca-certificates
+          git config --global --add safe.directory "$GITHUB_WORKSPACE"
+          git init
+          git remote add origin "https://${TOKEN}@git.uuxo.net/${GITHUB_REPOSITORY}.git"
+          git fetch --depth=1 origin "${GITHUB_SHA}"
+          git checkout FETCH_HEAD
+
+      - name: Download dependencies
+        run: go mod download
+
+      - name: Run tests
+        run: go test -race -coverprofile=coverage.out ./...
+
+      - name: Coverage summary
+        run: go tool cover -func=coverage.out | tail -1
+
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    container:
+      image: golang:1.24-bookworm
+    steps:
+      - name: Checkout code
+        env:
+          TOKEN: ${{ github.token }}
+        run: |
+          apt-get update && apt-get install -y -qq git ca-certificates
+          git config --global --add safe.directory "$GITHUB_WORKSPACE"
+          git init
+          git remote add origin "https://${TOKEN}@git.uuxo.net/${GITHUB_REPOSITORY}.git"
+          git fetch --depth=1 origin "${GITHUB_SHA}"
+          git checkout FETCH_HEAD
+
+      - name: Install and run golangci-lint
+        run: |
+          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/v')
+    container:
+      image: golang:1.24-bookworm
+    steps: |
+      <trimmed for backup>
+

.gitignore

@@ -33,3 +33,7 @@ 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

@@ -5,6 +5,813 @@ 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).
 
+## [3.42.110] - 2026-01-24
+
+### Improved - Code Quality & Testing
+- **Cleaned up 40+ unused code items** found by staticcheck:
+  - Removed unused functions, variables, struct fields, and type aliases
+  - Fixed SA4006 warning (unused value assignment in restore engine)
+  - All packages now pass staticcheck with zero warnings
+
+- **Added golangci-lint integration** to Makefile:
+  - New `make golangci-lint` target with auto-install
+  - Updated `lint` target to include golangci-lint
+  - Updated `install-tools` to install golangci-lint
+
+- **New unit tests** for improved coverage:
+  - `internal/config/config_test.go` - Tests for config initialization, database types, env helpers
+  - `internal/security/security_test.go` - Tests for checksums, path validation, rate limiting, audit logging
+
+## [3.42.109] - 2026-01-24
+
+### Added - Grafana Dashboard & Monitoring Improvements
+- **Enhanced Grafana dashboard** with comprehensive improvements:
+  - Added dashboard description for better discoverability
+  - New collapsible "Backup Overview" row for organization
+  - New **Verification Status** panel showing last backup verification state
+  - Added descriptions to all 17 panels for better understanding
+  - Enabled shared crosshair (graphTooltip=1) for correlated analysis
+  - Added "monitoring" tag for dashboard discovery
+
+- **New Prometheus alerting rules** (`grafana/alerting-rules.yaml`):
+  - `DBBackupRPOCritical` - No backup in 24+ hours (critical)
+  - `DBBackupRPOWarning` - No backup in 12+ hours (warning)
+  - `DBBackupFailure` - Backup failures detected
+  - `DBBackupNotVerified` - Backup not verified in 24h
+  - `DBBackupDedupRatioLow` - Dedup ratio below 10%
+  - `DBBackupDedupDiskGrowth` - Rapid storage growth prediction
+  - `DBBackupExporterDown` - Metrics exporter not responding
+  - `DBBackupMetricsStale` - Metrics not updated in 10+ minutes
+  - `DBBackupNeverSucceeded` - Database never backed up successfully
+
+### Changed
+- **Grafana dashboard layout fixes**:
+  - Fixed overlapping dedup panels (y: 31/36 → 22/27/32)
+  - Adjusted top row panel widths for better balance (5+5+5+4+5=24)
+
+- **Added Makefile** for streamlined development workflow:
+  - `make build` - optimized binary with ldflags
+  - `make test`, `make race`, `make cover` - testing targets
+  - `make lint` - runs vet + staticcheck
+  - `make all-platforms` - cross-platform builds
+
+### Fixed
+- Removed deprecated `netErr.Temporary()` call in cloud retry logic (Go 1.18+)
+- Fixed staticcheck warnings for redundant fmt.Sprintf calls
+- Logger optimizations: buffer pooling, early level check, pre-allocated maps
+- Clone engine now validates disk space before operations
+
+## [3.42.108] - 2026-01-24
+
+### Added - TUI Tools Expansion
+- **Table Sizes** - view top 100 tables sorted by size with row counts, data/index breakdown
+  - Supports PostgreSQL (`pg_stat_user_tables`) and MySQL (`information_schema.TABLES`)
+  - Shows total/data/index sizes, row counts, schema prefix for non-public schemas
+
+- **Kill Connections** - manage active database connections
+  - List all active connections with PID, user, database, state, query preview, duration
+  - Kill single connection or all connections to a specific database
+  - Useful before restore operations to clear blocking sessions
+  - Supports PostgreSQL (`pg_terminate_backend`) and MySQL (`KILL`)
+
+- **Drop Database** - safely drop databases with double confirmation
+  - Lists user databases (system DBs hidden: postgres, template0/1, mysql, sys, etc.)
+  - Requires two confirmations: y/n then type full database name
+  - Auto-terminates connections before drop
+  - Supports PostgreSQL and MySQL
+
+## [3.42.107] - 2026-01-24
+
+### Added - Tools Menu & Blob Statistics
+- **New "Tools" submenu in TUI** - centralized access to utility functions
+  - Blob Statistics - scan database for bytea/blob columns with size analysis
+  - Blob Extract - externalize large objects (coming soon)
+  - Dedup Store Analyze - storage savings analysis (coming soon)
+  - Verify Backup Integrity - backup verification
+  - Catalog Sync - synchronize local catalog (coming soon)
+
+- **New `dbbackup blob stats` CLI command** - analyze blob/bytea columns
+  - Scans `information_schema` for binary column types
+  - Shows row counts, total size, average size, max size per column
+  - Identifies tables storing large binary data for optimization
+  - Supports both PostgreSQL (bytea, oid) and MySQL (blob, mediumblob, longblob)
+  - Provides recommendations for databases with >100MB blob data
+
+## [3.42.106] - 2026-01-24
+
+### Fixed - Cluster Restore Resilience & Performance
+- **Fixed cluster restore failing on missing roles** - harmless "role does not exist" errors no longer abort restore
+  - Added role-related errors to `isIgnorableError()` with warning log
+  - Removed `ON_ERROR_STOP=1` from psql commands (pre-validation catches real corruption)
+  - Restore now continues gracefully when referenced roles don't exist in target cluster
+  - Previously caused 12h+ restores to fail at 94% completion
+
+- **Fixed TUI output scrambling in screen/tmux sessions** - added terminal detection
+  - Uses `go-isatty` to detect non-interactive terminals (backgrounded screen sessions, pipes)
+  - Added `viewSimple()` methods for clean line-by-line output without ANSI escape codes
+  - TUI menu now shows warning when running in non-interactive terminal
+
+### Changed - Consistent Parallel Compression (pgzip)
+- **Migrated all gzip operations to parallel pgzip** - 2-4x faster compression/decompression on multi-core systems
+  - Systematic audit found 17 files using standard `compress/gzip`
+  - All converted to `github.com/klauspost/pgzip` for consistent performance
+  - **Files updated**:
+    - `internal/backup/`: incremental_tar.go, incremental_extract.go, incremental_mysql.go
+    - `internal/wal/`: compression.go (CompressWALFile, DecompressWALFile, VerifyCompressedFile)
+    - `internal/engine/`: clone.go, snapshot_engine.go, mysqldump.go, binlog/file_target.go
+    - `internal/restore/`: engine.go, safety.go, formats.go, error_report.go
+    - `internal/pitr/`: mysql.go, binlog.go
+    - `internal/dedup/`: store.go
+    - `cmd/`: dedup.go, placeholder.go
+  - **Benefit**: Large backup/restore operations now fully utilize available CPU cores
+
+## [3.42.105] - 2026-01-23
+
+### Changed - TUI Visual Cleanup
+- **Removed ASCII box characters** from backup/restore success/failure banners
+  - Replaced `╔═╗║╚╝` boxes with clean `═══` horizontal line separators
+  - Cleaner, more modern appearance in terminal output
+- **Consolidated duplicate styles** in TUI components
+  - Unified check status styles (passed/failed/warning/pending) into global definitions
+  - Reduces code duplication across restore preview and diagnose views
+
+## [3.42.98] - 2025-01-23
+
+### Fixed - Critical Bug Fixes for v3.42.97
+- **Fixed CGO/SQLite build issue** - binaries now work when compiled with `CGO_ENABLED=0`
+  - Switched from `github.com/mattn/go-sqlite3` (requires CGO) to `modernc.org/sqlite` (pure Go)
+  - All cross-compiled binaries now work correctly on all platforms
+  - No more "Binary was compiled with 'CGO_ENABLED=0', go-sqlite3 requires cgo to work" errors
+
+- **Fixed MySQL positional database argument being ignored**
+  - `dbbackup backup single <dbname> --db-type mysql` now correctly uses `<dbname>`
+  - Previously defaulted to 'postgres' regardless of positional argument
+  - Also fixed in `backup sample` command
+
+## [3.42.97] - 2025-01-23
+
+### Added - Bandwidth Throttling for Cloud Uploads
+- **New `--bandwidth-limit` flag for cloud operations** - prevent network saturation during business hours
+  - Works with S3, GCS, Azure Blob Storage, MinIO, Backblaze B2
+  - Supports human-readable formats:
+    - `10MB/s`, `50MiB/s` - megabytes per second
+    - `100KB/s`, `500KiB/s` - kilobytes per second  
+    - `1GB/s` - gigabytes per second
+    - `100Mbps` - megabits per second (for network-minded users)
+    - `unlimited` or `0` - no limit (default)
+  - Environment variable: `DBBACKUP_BANDWIDTH_LIMIT`
+  - **Example usage**:
+    ```bash
+    # Limit upload to 10 MB/s during business hours
+    dbbackup cloud upload backup.dump --bandwidth-limit 10MB/s
+    
+    # Environment variable for all operations
+    export DBBACKUP_BANDWIDTH_LIMIT=50MiB/s
+    ```
+  - **Implementation**: Token-bucket style throttling with 100ms windows for smooth rate limiting
+  - **DBA requested feature**: Avoid saturating production network during scheduled backups
+
+## [3.42.96] - 2025-02-01
+
+### Changed - Complete Elimination of Shell tar/gzip Dependencies
+- **All tar/gzip operations now 100% in-process** - ZERO shell dependencies for backup/restore
+  - Removed ALL remaining `exec.Command("tar", ...)` calls
+  - Removed ALL remaining `exec.Command("gzip", ...)` calls
+  - Systematic code audit found and eliminated:
+    - `diagnose.go`: Replaced `tar -tzf` test with direct file open check
+    - `large_restore_check.go`: Replaced `gzip -t` and `gzip -l` with in-process pgzip verification
+    - `pitr/restore.go`: Replaced `tar -xf` with in-process tar extraction
+  - **Benefits**:
+    - No external tool dependencies (works in minimal containers)
+    - 2-4x faster on multi-core systems using parallel pgzip
+    - More reliable error handling with Go-native errors
+    - Consistent behavior across all platforms
+    - Reduced attack surface (no shell spawning)
+  - **Verification**: `strace` and `ps aux` show no tar/gzip/gunzip processes during backup/restore
+  - **Note**: Docker drill container commands still use gunzip for in-container operations (intentional)
+
+## [Unreleased]
+
+### 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`)
+
+### Added - PostgreSQL lock verification (CLI + preflight)
+- **`dbbackup verify-locks`** — new CLI command that probes PostgreSQL GUCs (`max_locks_per_transaction`, `max_connections`, `max_prepared_transactions`) and prints total lock capacity plus actionable restore guidance.
+- **Integrated into preflight checks** — preflight now warns/fails when lock settings are insufficient and provides exact remediation commands and recommended restore flags (e.g. `--jobs 1 --parallel-dbs 1`).
+- **Implemented in Go (replaces `verify_postgres_locks.sh`)** with robust parsing, sudo/`psql` fallback and unit-tested decision logic.
+- **Files:** `cmd/verify_locks.go`, `internal/checks/locks.go`, `internal/checks/locks_test.go`, `internal/checks/preflight.go`.
+- **Why:** Prevents repeated parallel-restore failures by surfacing lock-capacity issues early and providing bulletproof guidance.
+
+## [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
+- Supports single-database (`--backup-type single`) and cluster (`--backup-type cluster`) modes
+- Automatic `dbbackup` user/group creation with proper permissions
+- Hardened service units with security features (NoNewPrivileges, ProtectSystem, CapabilityBoundingSet)
+- Templated timer units with configurable schedules (daily, weekly, or custom OnCalendar)
+- Built-in dry-run mode (`--dry-run`) to preview installation
+- `dbbackup install --status` shows current installation state
+- `dbbackup uninstall` cleanly removes all systemd units and optionally configuration
+
+**Prometheus Metrics Support:**
+- New `dbbackup metrics export` command writes textfile collector format
+- New `dbbackup metrics serve` command runs HTTP exporter on port 9399
+- Metrics: `dbbackup_last_success_timestamp`, `dbbackup_rpo_seconds`, `dbbackup_backup_total`, etc.
+- Integration with node_exporter textfile collector
+- Metrics automatically updated via ExecStopPost in service units
+- `--with-metrics` flag during install sets up exporter as systemd service
+
+**New Commands:**
+```bash
+# Install as systemd service
+sudo dbbackup install --backup-type cluster --schedule daily
+
+# Install with Prometheus metrics
+sudo dbbackup install --with-metrics --metrics-port 9399
+
+# Check installation status
+dbbackup install --status
+
+# Export metrics for node_exporter
+dbbackup metrics export --output /var/lib/dbbackup/metrics/dbbackup.prom
+
+# Run HTTP metrics server
+dbbackup metrics serve --port 9399
+```
+
+### Technical Details
+- Systemd templates embedded with `//go:embed` for self-contained binary
+- Templates use ReadWritePaths for security isolation
+- Service units include proper OOMScoreAdjust (-100) to protect backups
+- Metrics exporter caches with 30-second TTL for performance
+- Graceful shutdown on SIGTERM for metrics server
+
+---
+
+## [3.41.0] - 2026-01-07 "The Pre-Flight Check"
+
+### Added - 🛡️ Pre-Restore Validation
+
+**Automatic Dump Validation Before Restore:**
+- SQL dump files are now validated BEFORE attempting restore
+- Detects truncated COPY blocks that cause "syntax error" failures
+- Catches corrupted backups in seconds instead of wasting 49+ minutes
+- Cluster restore pre-validates ALL dumps upfront (fail-fast approach)
+- Custom format `.dump` files now validated with `pg_restore --list`
+
+**Improved Error Messages:**
+- Clear indication when dump file is truncated
+- Shows which table's COPY block was interrupted
+- Displays sample orphaned data for diagnosis
+- Provides actionable error messages with root cause
+
+### Fixed
+- **P0: SQL Injection** - Added identifier validation for database names in CREATE/DROP DATABASE to prevent SQL injection attacks; uses safe quoting and regex validation (alphanumeric + underscore only)
+- **P0: Data Race** - Fixed concurrent goroutines appending to shared error slice in notification manager; now uses mutex synchronization
+- **P0: psql ON_ERROR_STOP** - Added `-v ON_ERROR_STOP=1` to psql commands to fail fast on first error instead of accumulating millions of errors
+- **P1: Pipe deadlock** - Fixed streaming compression deadlock when pg_dump blocks on full pipe buffer; now uses goroutine with proper context timeout handling
+- **P1: SIGPIPE handling** - Detect exit code 141 (broken pipe) and report compressor failure as root cause
+- **P2: .dump validation** - Custom format dumps now validated with `pg_restore --list` before restore
+- **P2: fsync durability** - Added `outFile.Sync()` after streaming compression to prevent truncation on power loss
+- Truncated `.sql.gz` dumps no longer waste hours on doomed restores
+- "syntax error at or near" errors now caught before restore begins
+- Cluster restores abort immediately if any dump is corrupted
+
+### Technical Details
+- Integrated `Diagnoser` into restore pipeline for pre-validation
+- Added `quickValidateSQLDump()` for fast integrity checks
+- Pre-validation runs on all `.sql.gz` and `.dump` files in cluster archives
+- Streaming compression uses channel-based wait with context cancellation
+- Zero performance impact on valid backups (diagnosis is fast)
+
+---
+
 ## [3.40.0] - 2026-01-05 "The Diagnostician"
 
 ### Added - 🔍 Restore Diagnostics & Error Reporting

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

Makefile

@@ -0,0 +1,126 @@
+# Makefile for dbbackup
+# Provides common development workflows
+
+.PHONY: build test lint vet clean install-tools help race cover golangci-lint
+
+# Build variables
+VERSION := $(shell grep 'version.*=' main.go | head -1 | sed 's/.*"\(.*\)".*/\1/')
+BUILD_TIME := $(shell date -u '+%Y-%m-%d_%H:%M:%S_UTC')
+GIT_COMMIT := $(shell git rev-parse --short HEAD 2>/dev/null || echo "unknown")
+LDFLAGS := -w -s -X main.version=$(VERSION) -X main.buildTime=$(BUILD_TIME) -X main.gitCommit=$(GIT_COMMIT)
+
+# Default target
+all: lint test build
+
+## build: Build the binary with optimizations
+build:
+	@echo "🔨 Building dbbackup $(VERSION)..."
+	CGO_ENABLED=0 go build -ldflags="$(LDFLAGS)" -o bin/dbbackup .
+	@echo "✅ Built bin/dbbackup"
+
+## build-debug: Build with debug symbols (for debugging)
+build-debug:
+	@echo "🔨 Building dbbackup $(VERSION) with debug symbols..."
+	go build -ldflags="-X main.version=$(VERSION) -X main.buildTime=$(BUILD_TIME) -X main.gitCommit=$(GIT_COMMIT)" -o bin/dbbackup-debug .
+	@echo "✅ Built bin/dbbackup-debug"
+
+## test: Run tests
+test:
+	@echo "🧪 Running tests..."
+	go test ./...
+
+## race: Run tests with race detector
+race:
+	@echo "🏃 Running tests with race detector..."
+	go test -race ./...
+
+## cover: Run tests with coverage report
+cover:
+	@echo "📊 Running tests with coverage..."
+	go test -cover ./... | tee coverage.txt
+	@echo "📄 Coverage saved to coverage.txt"
+
+## cover-html: Generate HTML coverage report
+cover-html:
+	@echo "📊 Generating HTML coverage report..."
+	go test -coverprofile=coverage.out ./...
+	go tool cover -html=coverage.out -o coverage.html
+	@echo "📄 Coverage report: coverage.html"
+
+## lint: Run all linters
+lint: vet staticcheck golangci-lint
+
+## vet: Run go vet
+vet:
+	@echo "🔍 Running go vet..."
+	go vet ./...
+
+## staticcheck: Run staticcheck (install if missing)
+staticcheck:
+	@echo "🔍 Running staticcheck..."
+	@if ! command -v staticcheck >/dev/null 2>&1; then \
+		echo "Installing staticcheck..."; \
+		go install honnef.co/go/tools/cmd/staticcheck@latest; \
+	fi
+	$$(go env GOPATH)/bin/staticcheck ./...
+
+## golangci-lint: Run golangci-lint (comprehensive linting)
+golangci-lint:
+	@echo "🔍 Running golangci-lint..."
+	@if ! command -v golangci-lint >/dev/null 2>&1; then \
+		echo "Installing golangci-lint..."; \
+		go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest; \
+	fi
+	$$(go env GOPATH)/bin/golangci-lint run --timeout 5m
+
+## install-tools: Install development tools
+install-tools:
+	@echo "📦 Installing development tools..."
+	go install honnef.co/go/tools/cmd/staticcheck@latest
+	go install golang.org/x/tools/cmd/goimports@latest
+	go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest
+	@echo "✅ Tools installed"
+
+## fmt: Format code
+fmt:
+	@echo "🎨 Formatting code..."
+	gofmt -w -s .
+	@which goimports > /dev/null && goimports -w . || true
+
+## tidy: Tidy and verify go.mod
+tidy:
+	@echo "🧹 Tidying go.mod..."
+	go mod tidy
+	go mod verify
+
+## update: Update dependencies
+update:
+	@echo "⬆️  Updating dependencies..."
+	go get -u ./...
+	go mod tidy
+
+## clean: Clean build artifacts
+clean:
+	@echo "🧹 Cleaning..."
+	rm -rf bin/dbbackup bin/dbbackup-debug
+	rm -f coverage.out coverage.txt coverage.html
+	go clean -cache -testcache
+
+## docker: Build Docker image
+docker:
+	@echo "🐳 Building Docker image..."
+	docker build -t dbbackup:$(VERSION) .
+
+## all-platforms: Build for all platforms (uses build_all.sh)
+all-platforms:
+	@echo "🌍 Building for all platforms..."
+	./build_all.sh
+
+## help: Show this help
+help:
+	@echo "dbbackup Makefile"
+	@echo ""
+	@echo "Usage: make [target]"
+	@echo ""
+	@echo "Targets:"
+	@grep -E '^## ' Makefile | sed 's/## /  /'

QUICK.md

@@ -0,0 +1,294 @@
+# dbbackup Quick Reference
+
+Real examples, no fluff.
+
+## Basic Backups
+
+```bash
+# PostgreSQL cluster (all databases + globals)
+dbbackup backup cluster
+
+# Single database
+dbbackup backup single myapp
+
+# MySQL
+dbbackup backup single gitea --db-type mysql --host 127.0.0.1 --port 3306
+
+# With compression level (0-9, default 6)
+dbbackup backup cluster --compression 9
+
+# As root (requires flag)
+sudo dbbackup backup cluster --allow-root
+```
+
+## PITR (Point-in-Time Recovery)
+
+```bash
+# Enable WAL archiving for a database
+dbbackup pitr enable myapp /mnt/backups/wal
+
+# Take base backup (required before PITR works)
+dbbackup pitr base myapp /mnt/backups/wal
+
+# Check PITR status
+dbbackup pitr status myapp /mnt/backups/wal
+
+# Restore to specific point in time
+dbbackup pitr restore myapp /mnt/backups/wal --target-time "2026-01-23 14:30:00"
+
+# Restore to latest available
+dbbackup pitr restore myapp /mnt/backups/wal --target-time latest
+
+# Disable PITR
+dbbackup pitr disable myapp
+```
+
+## Deduplication
+
+```bash
+# Backup with dedup (saves ~60-80% space on similar databases)
+dbbackup backup all /mnt/backups/databases --dedup
+
+# Check dedup stats
+dbbackup dedup stats /mnt/backups/databases
+
+# Prune orphaned chunks (after deleting old backups)
+dbbackup dedup prune /mnt/backups/databases
+
+# Verify chunk integrity
+dbbackup dedup verify /mnt/backups/databases
+```
+
+## Blob Statistics
+
+```bash
+# Analyze blob/binary columns in a database (plan extraction strategies)
+dbbackup blob stats --database myapp
+
+# Output shows tables with blob columns, row counts, and estimated sizes
+# Helps identify large binary data for separate extraction
+
+# With explicit connection
+dbbackup blob stats --database myapp --host dbserver --user admin
+
+# MySQL blob analysis
+dbbackup blob stats --database shopdb --db-type mysql
+```
+
+## Cloud Storage
+
+```bash
+# Upload to S3
+dbbackup cloud upload /mnt/backups/databases/myapp_2026-01-23.sql.gz \
+  --cloud-provider s3 \
+  --cloud-bucket my-backups
+
+# Upload to MinIO (self-hosted)
+dbbackup cloud upload backup.sql.gz \
+  --cloud-provider minio \
+  --cloud-bucket backups \
+  --cloud-endpoint https://minio.internal:9000
+
+# Upload to Backblaze B2
+dbbackup cloud upload backup.sql.gz \
+  --cloud-provider b2 \
+  --cloud-bucket my-b2-bucket
+
+# With bandwidth limit (don't saturate the network)
+dbbackup cloud upload backup.sql.gz --cloud-provider s3 --cloud-bucket backups --bandwidth-limit 10MB/s
+
+# List remote backups
+dbbackup cloud list --cloud-provider s3 --cloud-bucket my-backups
+
+# Download
+dbbackup cloud download myapp_2026-01-23.sql.gz /tmp/ --cloud-provider s3 --cloud-bucket my-backups
+
+# Delete old backup from cloud
+dbbackup cloud delete myapp_2026-01-01.sql.gz --cloud-provider s3 --cloud-bucket my-backups
+```
+
+### Cloud Environment Variables
+
+```bash
+# S3/MinIO
+export AWS_ACCESS_KEY_ID=AKIAXXXXXXXX
+export AWS_SECRET_ACCESS_KEY=xxxxxxxx
+export AWS_REGION=eu-central-1
+
+# GCS
+export GOOGLE_APPLICATION_CREDENTIALS=/path/to/service-account.json
+
+# Azure
+export AZURE_STORAGE_ACCOUNT=mystorageaccount
+export AZURE_STORAGE_KEY=xxxxxxxx
+```
+
+## Encryption
+
+```bash
+# Backup with encryption (AES-256-GCM)
+dbbackup backup single myapp --encrypt
+
+# Use environment variable for key (recommended)
+export DBBACKUP_ENCRYPTION_KEY="my-secret-passphrase"
+dbbackup backup cluster --encrypt
+
+# Or use key file
+dbbackup backup single myapp --encrypt --encryption-key-file /path/to/keyfile
+
+# Restore encrypted backup (key from environment)
+dbbackup restore single myapp_2026-01-23.dump.gz.enc --confirm
+```
+
+## Catalog (Backup Inventory)
+
+```bash
+# Sync local backups to catalog
+dbbackup catalog sync /mnt/backups/databases
+
+# List all backups
+dbbackup catalog list
+
+# Show catalog statistics
+dbbackup catalog stats
+
+# Show gaps (missing daily backups)
+dbbackup catalog gaps mydb --interval 24h
+
+# Search backups
+dbbackup catalog search --database myapp --after 2026-01-01
+
+# Show detailed info for a backup
+dbbackup catalog info myapp_2026-01-23.dump.gz
+```
+
+## Restore
+
+```bash
+# Preview restore (dry-run by default)
+dbbackup restore single myapp_2026-01-23.dump.gz
+
+# Restore to new database
+dbbackup restore single myapp_2026-01-23.dump.gz --target myapp_restored --confirm
+
+# Restore to existing database (clean first)
+dbbackup restore single myapp_2026-01-23.dump.gz --clean --confirm
+
+# Restore MySQL
+dbbackup restore single gitea_2026-01-23.sql.gz --target gitea_restored \
+  --db-type mysql --host 127.0.0.1 --confirm
+
+# Verify restore (restores to temp db, runs checks, drops it)
+dbbackup verify-restore myapp_2026-01-23.dump.gz
+```
+
+## Retention & Cleanup
+
+```bash
+# Delete backups older than 30 days (keep at least 5)
+dbbackup cleanup /mnt/backups/databases --retention-days 30 --min-backups 5
+
+# GFS retention: 7 daily, 4 weekly, 12 monthly
+dbbackup cleanup /mnt/backups/databases --gfs --gfs-daily 7 --gfs-weekly 4 --gfs-monthly 12
+
+# Dry run (show what would be deleted)
+dbbackup cleanup /mnt/backups/databases --retention-days 7 --dry-run
+```
+
+## Disaster Recovery Drill
+
+```bash
+# Full DR test (restores random backup, verifies, cleans up)
+dbbackup drill /mnt/backups/databases
+
+# Test specific database
+dbbackup drill /mnt/backups/databases --database myapp
+
+# With email notification (configure via environment variables)
+export NOTIFY_SMTP_HOST="smtp.example.com"
+export NOTIFY_SMTP_TO="admin@example.com"
+dbbackup drill /mnt/backups/databases --database myapp
+```
+
+## Monitoring & Metrics
+
+```bash
+# Prometheus metrics endpoint
+dbbackup metrics serve --port 9101
+
+# One-shot status check (for scripts)
+dbbackup status /mnt/backups/databases
+echo $?  # 0 = OK, 1 = warnings, 2 = critical
+
+# Generate HTML report
+dbbackup report /mnt/backups/databases --output backup-report.html
+```
+
+## Systemd Timer (Recommended)
+
+```bash
+# Install systemd units
+sudo dbbackup install systemd --backup-path /mnt/backups/databases --schedule "02:00"
+
+# Creates:
+#   /etc/systemd/system/dbbackup.service
+#   /etc/systemd/system/dbbackup.timer
+
+# Check timer
+systemctl status dbbackup.timer
+systemctl list-timers dbbackup.timer
+```
+
+## Common Combinations
+
+```bash
+# Full production setup: encrypted, with cloud auto-upload
+dbbackup backup cluster \
+  --encrypt \
+  --compression 9 \
+  --cloud-auto-upload \
+  --cloud-provider s3 \
+  --cloud-bucket prod-backups
+
+# Quick MySQL backup to S3
+dbbackup backup single shopdb --db-type mysql && \
+dbbackup cloud upload shopdb_*.sql.gz --cloud-provider s3 --cloud-bucket backups
+
+# PITR-enabled PostgreSQL with cloud upload
+dbbackup pitr enable proddb /mnt/wal
+dbbackup pitr base proddb /mnt/wal
+dbbackup cloud upload /mnt/wal/*.gz --cloud-provider s3 --cloud-bucket wal-archive
+```
+
+## Environment Variables
+
+| Variable | Description |
+|----------|-------------|
+| `DBBACKUP_ENCRYPTION_KEY` | Encryption passphrase |
+| `DBBACKUP_BANDWIDTH_LIMIT` | Cloud upload limit (e.g., `10MB/s`) |
+| `DBBACKUP_CLOUD_PROVIDER` | Cloud provider (s3, minio, b2) |
+| `DBBACKUP_CLOUD_BUCKET` | Cloud bucket name |
+| `DBBACKUP_CLOUD_ENDPOINT` | Custom endpoint (for MinIO) |
+| `AWS_ACCESS_KEY_ID` | S3/MinIO credentials |
+| `AWS_SECRET_ACCESS_KEY` | S3/MinIO secret key |
+| `PGHOST`, `PGPORT`, `PGUSER` | PostgreSQL connection |
+| `MYSQL_HOST`, `MYSQL_TCP_PORT` | MySQL connection |
+
+## Quick Checks
+
+```bash
+# What version?
+dbbackup --version
+
+# Connection status
+dbbackup status
+
+# Test database connection (dry-run)
+dbbackup backup single testdb --dry-run
+
+# Verify a backup file
+dbbackup verify /mnt/backups/databases/myapp_2026-01-23.dump.gz
+
+# Run preflight checks
+dbbackup preflight
+```

README.md

@@ -1,9 +1,19 @@
-# dbbackup
+```
+    ██╗  ██╗    ██████╗ 
+    ██║  ██║   ██╔═████╗
+    ███████║   ██║██╔██║
+    ╚════██║   ████╔╝██║
+         ██║██╗╚██████╔╝
+         ╚═╝╚═╝ ╚═════╝ 
+```
+
+# dbbackup v4.0.0
 
 Database backup and restore utility for PostgreSQL, MySQL, and MariaDB.
 
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 [![Go Version](https://img.shields.io/badge/Go-1.21+-00ADD8?logo=go)](https://golang.org/)
+[![Release](https://img.shields.io/badge/Release-v4.0.0-green.svg)](https://github.com/PlusOne/dbbackup/releases/tag/v4.0.0)
 
 **Repository:** https://git.uuxo.net/UUXO/dbbackup  
 **Mirror:** https://github.com/PlusOne/dbbackup
@@ -19,6 +29,8 @@ Database backup and restore utility for PostgreSQL, MySQL, and MariaDB.
 - Point-in-Time Recovery (PITR) for PostgreSQL and MySQL/MariaDB
 - **GFS retention policies**: Grandfather-Father-Son backup rotation
 - **Notifications**: SMTP email and webhook alerts
+- **Systemd integration**: Install as service with scheduled timers
+- **Prometheus metrics**: Textfile collector and HTTP exporter
 - Interactive terminal UI
 - Cross-platform binaries
 
@@ -54,7 +66,7 @@ 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
 ```
@@ -97,6 +109,7 @@ Database: postgres@localhost:5432 (PostgreSQL)
   Diagnose Backup File
   List & Manage Backups
   ────────────────────────────────
+  Tools
   View Active Operations
   Show Operation History
   Database Status & Health Check
@@ -105,6 +118,22 @@ Database: postgres@localhost:5432 (PostgreSQL)
   Quit
 ```
 
+**Tools Menu:**
+```
+Tools
+
+Advanced utilities for database backup management
+
+> Blob Statistics
+  Blob Extract (externalize LOBs)
+  ────────────────────────────────
+  Dedup Store Analyze
+  Verify Backup Integrity
+  Catalog Sync
+  ────────────────────────────────
+  Back to Main Menu
+```
+
 **Database Selection:**
 ```
 Single Database Backup
@@ -141,7 +170,7 @@ 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
 ```
@@ -192,21 +221,59 @@ 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
@@ -246,12 +313,21 @@ 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
 
 # Diagnose backup before restore
 dbbackup restore diagnose backup.dump.gz --deep
 
+# Check PostgreSQL lock configuration (preflight for large restores)
+# - warns/fails when `max_locks_per_transaction` is insufficient and prints exact remediation
+# - safe to run before a restore to determine whether single-threaded restore is required
+# Example:
+# dbbackup verify-locks
+
 # Cloud backup
 dbbackup backup single mydb --cloud s3://my-bucket/backups/
 
@@ -271,6 +347,7 @@ dbbackup backup single mydb --dry-run
 | `restore pitr` | Point-in-Time Recovery |
 | `restore diagnose` | Diagnose backup file integrity |
 | `verify-backup` | Verify backup integrity |
+| `verify-locks` | Check PostgreSQL lock settings and get restore guidance |
 | `cleanup` | Remove old backups |
 | `status` | Check connection status |
 | `preflight` | Run pre-backup checks |
@@ -284,6 +361,11 @@ dbbackup backup single mydb --dry-run
 | `drill` | DR drill testing |
 | `report` | Compliance report generation |
 | `rto` | RTO/RPO analysis |
+| `blob stats` | Analyze blob/bytea columns in database |
+| `install` | Install as systemd service |
+| `uninstall` | Remove systemd service |
+| `metrics export` | Export Prometheus metrics to textfile |
+| `metrics serve` | Run Prometheus HTTP exporter |
 
 ## Global Flags
 
@@ -297,6 +379,7 @@ 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 |
@@ -581,11 +664,11 @@ dbbackup catalog stats
 # Detect backup gaps (missing scheduled backups)
 dbbackup catalog gaps --interval 24h --database mydb
 
-# Search backups
-dbbackup catalog search --database mydb --start 2024-01-01 --end 2024-12-31
+# Search backups by date range
+dbbackup catalog search --database mydb --after 2024-01-01 --before 2024-12-31
 
-# Get backup info
-dbbackup catalog info 42
+# Get backup info by path
+dbbackup catalog info /backups/mydb_20240115.dump.gz
 ```
 
 ## DR Drill Testing
@@ -596,8 +679,8 @@ Automated disaster recovery testing restores backups to Docker containers:
 # Run full DR drill
 dbbackup drill run /backups/mydb_latest.dump.gz \
   --database mydb \
-  --db-type postgres \
-  --timeout 30m
+  --type postgresql \
+  --timeout 1800
 
 # Quick drill (restore + basic validation)
 dbbackup drill quick /backups/mydb_latest.dump.gz --database mydb
@@ -605,11 +688,11 @@ dbbackup drill quick /backups/mydb_latest.dump.gz --database mydb
 # List running drill containers
 dbbackup drill list
 
-# Cleanup old drill containers
-dbbackup drill cleanup --age 24h
+# Cleanup all drill containers
+dbbackup drill cleanup
 
-# Generate drill report
-dbbackup drill report --format html --output drill-report.html
+# Display a saved drill report
+dbbackup drill report drill_20240115_120000_report.json --format json
 ```
 
 **Drill phases:**
@@ -654,16 +737,13 @@ Calculate and monitor Recovery Time/Point Objectives:
 
 ```bash
 # Analyze RTO/RPO for a database
-dbbackup rto analyze mydb
+dbbackup rto analyze --database mydb
 
 # Show status for all databases
 dbbackup rto status
 
 # Check against targets
-dbbackup rto check --rto 4h --rpo 1h
-
-# Set target objectives
-dbbackup rto analyze mydb --target-rto 4h --target-rpo 1h
+dbbackup rto check --target-rto 4h --target-rpo 1h
 ```
 
 **Analysis includes:**
@@ -673,6 +753,104 @@ dbbackup rto analyze mydb --target-rto 4h --target-rpo 1h
 - Compliance status
 - Recommendations for improvement
 
+## Systemd Integration
+
+Install dbbackup as a systemd service for automated scheduled backups:
+
+```bash
+# Install with Prometheus metrics exporter
+sudo dbbackup install --backup-type cluster --with-metrics
+
+# Preview what would be installed
+dbbackup install --dry-run --backup-type cluster
+
+# Check installation status
+dbbackup install --status
+
+# Uninstall
+sudo dbbackup uninstall cluster --purge
+```
+
+**Schedule options:**
+```bash
+--schedule daily                    # Every day at midnight (default)
+--schedule weekly                   # Every Monday at midnight  
+--schedule "*-*-* 02:00:00"         # Every day at 2am
+--schedule "Mon *-*-* 03:00"        # Every Monday at 3am
+```
+
+**What gets installed:**
+- Systemd service and timer units
+- Dedicated `dbbackup` user with security hardening
+- Directories: `/var/lib/dbbackup/`, `/etc/dbbackup/`
+- Optional: Prometheus HTTP exporter on port 9399
+
+📖 **Full documentation:** [SYSTEMD.md](SYSTEMD.md) - Manual setup, security hardening, multiple instances, troubleshooting
+
+## Prometheus Metrics
+
+Export backup metrics for monitoring with Prometheus:
+
+> **Migration Note (v1.x → v2.x):** The `--instance` flag was renamed to `--server` to avoid collision with Prometheus's reserved `instance` label. Update your cronjobs and scripts accordingly.
+
+### Textfile Collector
+
+For integration with node_exporter:
+
+```bash
+# Export metrics to textfile
+dbbackup metrics export --output /var/lib/node_exporter/textfile_collector/dbbackup.prom
+
+# Export for specific server
+dbbackup metrics export --server production --output /var/lib/dbbackup/metrics/production.prom
+```
+
+Configure node_exporter:
+```bash
+node_exporter --collector.textfile.directory=/var/lib/node_exporter/textfile_collector/
+```
+
+### HTTP Exporter
+
+Run a dedicated metrics HTTP server:
+
+```bash
+# Start metrics server on default port 9399
+dbbackup metrics serve
+
+# Custom port
+dbbackup metrics serve --port 9100
+
+# Run as systemd service (installed via --with-metrics)
+sudo systemctl start dbbackup-exporter
+```
+
+**Endpoints:**
+- `/metrics` - Prometheus exposition format
+- `/health` - Health check (returns 200 OK)
+
+**Available metrics:**
+| Metric | Type | Description |
+|--------|------|-------------|
+| `dbbackup_last_success_timestamp` | gauge | Unix timestamp of last successful backup |
+| `dbbackup_last_backup_duration_seconds` | gauge | Duration of last backup |
+| `dbbackup_last_backup_size_bytes` | gauge | Size of last backup |
+| `dbbackup_backup_total` | counter | Total backups by status (success/failure) |
+| `dbbackup_rpo_seconds` | gauge | Seconds since last successful backup |
+| `dbbackup_backup_verified` | gauge | Whether last backup was verified (1/0) |
+| `dbbackup_scrape_timestamp` | gauge | When metrics were collected |
+
+**Labels:** `instance`, `database`, `engine`
+
+**Example Prometheus query:**
+```promql
+# Alert if RPO exceeds 24 hours
+dbbackup_rpo_seconds{instance="production"} > 86400
+
+# Backup success rate
+sum(rate(dbbackup_backup_total{status="success"}[24h])) / sum(rate(dbbackup_backup_total[24h]))
+```
+
 ## Configuration
 
 ### PostgreSQL Authentication
@@ -756,14 +934,29 @@ Workload types:
 
 ## Documentation
 
-- [DOCKER.md](DOCKER.md) - Docker deployment
-- [CLOUD.md](CLOUD.md) - Cloud storage configuration
-- [PITR.md](PITR.md) - Point-in-Time Recovery
-- [AZURE.md](AZURE.md) - Azure Blob Storage
-- [GCS.md](GCS.md) - Google Cloud Storage
+**Quick Start:**
+- [QUICK.md](QUICK.md) - Real-world examples cheat sheet
+
+**Guides:**
+- [docs/PITR.md](docs/PITR.md) - Point-in-Time Recovery (PostgreSQL)
+- [docs/MYSQL_PITR.md](docs/MYSQL_PITR.md) - Point-in-Time Recovery (MySQL)
+- [docs/ENGINES.md](docs/ENGINES.md) - Database engine configuration
+- [docs/RESTORE_PROFILES.md](docs/RESTORE_PROFILES.md) - Restore resource profiles
+
+**Cloud Storage:**
+- [docs/CLOUD.md](docs/CLOUD.md) - Cloud storage overview
+- [docs/AZURE.md](docs/AZURE.md) - Azure Blob Storage
+- [docs/GCS.md](docs/GCS.md) - Google Cloud Storage
+
+**Deployment:**
+- [docs/DOCKER.md](docs/DOCKER.md) - Docker deployment
+- [docs/SYSTEMD.md](docs/SYSTEMD.md) - Systemd installation & scheduling
+
+**Reference:**
 - [SECURITY.md](SECURITY.md) - Security considerations
 - [CONTRIBUTING.md](CONTRIBUTING.md) - Contribution guidelines
 - [CHANGELOG.md](CHANGELOG.md) - Version history
+- [docs/LOCK_DEBUGGING.md](docs/LOCK_DEBUGGING.md) - Lock troubleshooting
 
 ## License
 

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)

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"
@@ -33,7 +33,7 @@ CYAN='\033[0;36m'
 BOLD='\033[1m'
 NC='\033[0m'
 
-# Platform configurations
+# Platform configurations - Linux & macOS only
 # Format: "GOOS/GOARCH:binary_suffix:description"
 PLATFORMS=(
     "linux/amd64::Linux 64-bit (Intel/AMD)"
@@ -41,11 +41,6 @@ PLATFORMS=(
     "linux/arm:_armv7:Linux 32-bit (ARMv7)"
     "darwin/amd64::macOS 64-bit (Intel)"
     "darwin/arm64::macOS 64-bit (Apple Silicon)"
-    "windows/amd64:.exe:Windows 64-bit (Intel/AMD)"
-    "windows/arm64:.exe:Windows 64-bit (ARM)"
-    "freebsd/amd64::FreeBSD 64-bit (Intel/AMD)"
-    "openbsd/amd64::OpenBSD 64-bit (Intel/AMD)"
-    "netbsd/amd64::NetBSD 64-bit (Intel/AMD)"
 )
 
 echo -e "${BOLD}${BLUE}🔨 Cross-Platform Build Script for ${APP_NAME}${NC}"
@@ -83,7 +78,8 @@ for platform_config in "${PLATFORMS[@]}"; do
     echo -e "${YELLOW}[$current/$total_platforms]${NC} Building for ${BOLD}$description${NC} (${platform})"
     
     # Set environment and build (using export for better compatibility)
-    export GOOS GOARCH
+    # CGO_ENABLED=0 creates static binaries without glibc dependency
+    export CGO_ENABLED=0 GOOS GOARCH
     if go build -ldflags "$LDFLAGS" -o "${BIN_DIR}/${binary_name}" . 2>/dev/null; then
         # Get file size
         if [[ "$OSTYPE" == "darwin"* ]]; then

cmd/backup.go

@@ -58,13 +58,13 @@ var singleCmd = &cobra.Command{
 
 Backup Types:
   --backup-type full         - Complete full backup (default)
-  --backup-type incremental  - Incremental backup (only changed files since base) [NOT IMPLEMENTED]
+  --backup-type incremental  - Incremental backup (only changed files since base)
 
 Examples:
   # Full backup (default)
   dbbackup backup single mydb
   
-  # Incremental backup (requires previous full backup) [COMING IN v2.2.1]
+  # Incremental backup (requires previous full backup)
   dbbackup backup single mydb --backup-type incremental --base-backup mydb_20250126.tar.gz`,
 	Args: cobra.MaximumNArgs(1),
 	RunE: func(cmd *cobra.Command, args []string) error {
@@ -114,7 +114,7 @@ func init() {
 	backupCmd.AddCommand(sampleCmd)
 
 	// Incremental backup flags (single backup only) - using global vars to avoid initialization cycle
-	singleCmd.Flags().StringVar(&backupTypeFlag, "backup-type", "full", "Backup type: full or incremental [incremental NOT IMPLEMENTED]")
+	singleCmd.Flags().StringVar(&backupTypeFlag, "backup-type", "full", "Backup type: full or incremental")
 	singleCmd.Flags().StringVar(&baseBackupFlag, "base-backup", "", "Path to base backup (required for incremental)")
 
 	// Encryption flags for all backup commands

cmd/backup_impl.go

@@ -12,6 +12,7 @@ import (
 	"dbbackup/internal/checks"
 	"dbbackup/internal/config"
 	"dbbackup/internal/database"
+	"dbbackup/internal/notify"
 	"dbbackup/internal/security"
 )
 
@@ -57,6 +58,17 @@ func runClusterBackup(ctx context.Context) error {
 	user := security.GetCurrentUser()
 	auditLogger.LogBackupStart(user, "all_databases", "cluster")
 
+	// Track start time for notifications
+	backupStartTime := time.Now()
+
+	// Notify: backup started
+	if notifyManager != nil {
+		notifyManager.Notify(notify.NewEvent(notify.EventBackupStarted, notify.SeverityInfo, "Cluster backup started").
+			WithDatabase("all_databases").
+			WithDetail("host", cfg.Host).
+			WithDetail("backup_dir", cfg.BackupDir))
+	}
+
 	// Rate limit connection attempts
 	host := fmt.Sprintf("%s:%d", cfg.Host, cfg.Port)
 	if err := rateLimiter.CheckAndWait(host); err != nil {
@@ -86,6 +98,13 @@ func runClusterBackup(ctx context.Context) error {
 	// Perform cluster backup
 	if err := engine.BackupCluster(ctx); err != nil {
 		auditLogger.LogBackupFailed(user, "all_databases", err)
+		// Notify: backup failed
+		if notifyManager != nil {
+			notifyManager.Notify(notify.NewEvent(notify.EventBackupFailed, notify.SeverityError, "Cluster backup failed").
+				WithDatabase("all_databases").
+				WithError(err).
+				WithDuration(time.Since(backupStartTime)))
+		}
 		return err
 	}
 
@@ -93,6 +112,13 @@ func runClusterBackup(ctx context.Context) error {
 	if isEncryptionEnabled() {
 		if err := encryptLatestClusterBackup(); err != nil {
 			log.Error("Failed to encrypt backup", "error", err)
+			// Notify: encryption failed
+			if notifyManager != nil {
+				notifyManager.Notify(notify.NewEvent(notify.EventBackupFailed, notify.SeverityError, "Backup encryption failed").
+					WithDatabase("all_databases").
+					WithError(err).
+					WithDuration(time.Since(backupStartTime)))
+			}
 			return fmt.Errorf("backup completed successfully but encryption failed. Unencrypted backup remains in %s: %w", cfg.BackupDir, err)
 		}
 		log.Info("Cluster backup encrypted successfully")
@@ -101,6 +127,14 @@ func runClusterBackup(ctx context.Context) error {
 	// Audit log: backup success
 	auditLogger.LogBackupComplete(user, "all_databases", cfg.BackupDir, 0)
 
+	// Notify: backup completed
+	if notifyManager != nil {
+		notifyManager.Notify(notify.NewEvent(notify.EventBackupCompleted, notify.SeveritySuccess, "Cluster backup completed successfully").
+			WithDatabase("all_databases").
+			WithDuration(time.Since(backupStartTime)).
+			WithDetail("backup_dir", cfg.BackupDir))
+	}
+
 	// Cleanup old backups if retention policy is enabled
 	if cfg.RetentionDays > 0 {
 		retentionPolicy := security.NewRetentionPolicy(cfg.RetentionDays, cfg.MinBackups, log)
@@ -130,6 +164,10 @@ func runSingleBackup(ctx context.Context, databaseName string) error {
 	// Update config from environment
 	cfg.UpdateFromEnvironment()
 
+	// IMPORTANT: Set the database name from positional argument
+	// This overrides the default 'postgres' when using MySQL
+	cfg.Database = databaseName
+
 	// Validate configuration
 	if err := cfg.Validate(); err != nil {
 		return fmt.Errorf("configuration error: %w", err)
@@ -140,10 +178,9 @@ func runSingleBackup(ctx context.Context, databaseName string) error {
 		return runBackupPreflight(ctx, databaseName)
 	}
 
-	// Get backup type and base backup from command line flags (set via global vars in PreRunE)
-	// These are populated by cobra flag binding in cmd/backup.go
-	backupType := "full" // Default to full backup if not specified
-	baseBackup := ""     // Base backup path for incremental backups
+	// Get backup type and base backup from command line flags
+	backupType := backupTypeFlag
+	baseBackup := baseBackupFlag
 
 	// Validate backup type
 	if backupType != "full" && backupType != "incremental" {
@@ -186,6 +223,17 @@ func runSingleBackup(ctx context.Context, databaseName string) error {
 	user := security.GetCurrentUser()
 	auditLogger.LogBackupStart(user, databaseName, "single")
 
+	// Track start time for notifications
+	backupStartTime := time.Now()
+
+	// Notify: backup started
+	if notifyManager != nil {
+		notifyManager.Notify(notify.NewEvent(notify.EventBackupStarted, notify.SeverityInfo, "Database backup started").
+			WithDatabase(databaseName).
+			WithDetail("host", cfg.Host).
+			WithDetail("backup_type", backupType))
+	}
+
 	// Rate limit connection attempts
 	host := fmt.Sprintf("%s:%d", cfg.Host, cfg.Port)
 	if err := rateLimiter.CheckAndWait(host); err != nil {
@@ -268,6 +316,13 @@ func runSingleBackup(ctx context.Context, databaseName string) error {
 
 	if backupErr != nil {
 		auditLogger.LogBackupFailed(user, databaseName, backupErr)
+		// Notify: backup failed
+		if notifyManager != nil {
+			notifyManager.Notify(notify.NewEvent(notify.EventBackupFailed, notify.SeverityError, "Database backup failed").
+				WithDatabase(databaseName).
+				WithError(backupErr).
+				WithDuration(time.Since(backupStartTime)))
+		}
 		return backupErr
 	}
 
@@ -275,6 +330,13 @@ func runSingleBackup(ctx context.Context, databaseName string) error {
 	if isEncryptionEnabled() {
 		if err := encryptLatestBackup(databaseName); err != nil {
 			log.Error("Failed to encrypt backup", "error", err)
+			// Notify: encryption failed
+			if notifyManager != nil {
+				notifyManager.Notify(notify.NewEvent(notify.EventBackupFailed, notify.SeverityError, "Backup encryption failed").
+					WithDatabase(databaseName).
+					WithError(err).
+					WithDuration(time.Since(backupStartTime)))
+			}
 			return fmt.Errorf("backup succeeded but encryption failed: %w", err)
 		}
 		log.Info("Backup encrypted successfully")
@@ -283,6 +345,15 @@ func runSingleBackup(ctx context.Context, databaseName string) error {
 	// Audit log: backup success
 	auditLogger.LogBackupComplete(user, databaseName, cfg.BackupDir, 0)
 
+	// Notify: backup completed
+	if notifyManager != nil {
+		notifyManager.Notify(notify.NewEvent(notify.EventBackupCompleted, notify.SeveritySuccess, "Database backup completed successfully").
+			WithDatabase(databaseName).
+			WithDuration(time.Since(backupStartTime)).
+			WithDetail("backup_dir", cfg.BackupDir).
+			WithDetail("backup_type", backupType))
+	}
+
 	// Cleanup old backups if retention policy is enabled
 	if cfg.RetentionDays > 0 {
 		retentionPolicy := security.NewRetentionPolicy(cfg.RetentionDays, cfg.MinBackups, log)
@@ -312,6 +383,9 @@ func runSampleBackup(ctx context.Context, databaseName string) error {
 	// Update config from environment
 	cfg.UpdateFromEnvironment()
 
+	// IMPORTANT: Set the database name from positional argument
+	cfg.Database = databaseName
+
 	// Validate configuration
 	if err := cfg.Validate(); err != nil {
 		return fmt.Errorf("configuration error: %w", err)

cmd/blob.go

@@ -0,0 +1,318 @@
+package cmd
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"os"
+	"strings"
+	"text/tabwriter"
+	"time"
+
+	"github.com/spf13/cobra"
+
+	_ "github.com/go-sql-driver/mysql"
+	_ "github.com/jackc/pgx/v5/stdlib" // PostgreSQL driver
+)
+
+var blobCmd = &cobra.Command{
+	Use:   "blob",
+	Short: "Large object (BLOB/BYTEA) operations",
+	Long: `Analyze and manage large binary objects stored in databases.
+
+Many applications store large binary data (images, PDFs, attachments) directly
+in the database. This can cause:
+- Slow backups and restores
+- Poor deduplication ratios
+- Excessive storage usage
+
+The blob commands help you identify and manage this data.
+
+Available Commands:
+  stats      Scan database for blob columns and show size statistics
+  extract    Extract blobs to external storage (coming soon)
+  rehydrate  Restore blobs from external storage (coming soon)`,
+}
+
+var blobStatsCmd = &cobra.Command{
+	Use:   "stats",
+	Short: "Show blob column statistics",
+	Long: `Scan the database for BLOB/BYTEA columns and display size statistics.
+
+This helps identify tables storing large binary data that might benefit
+from blob extraction for faster backups.
+
+PostgreSQL column types detected:
+  - bytea
+  - oid (large objects)
+
+MySQL/MariaDB column types detected:
+  - blob, mediumblob, longblob, tinyblob
+  - binary, varbinary
+
+Example:
+  dbbackup blob stats
+  dbbackup blob stats -d myapp_production`,
+	RunE: runBlobStats,
+}
+
+func init() {
+	rootCmd.AddCommand(blobCmd)
+	blobCmd.AddCommand(blobStatsCmd)
+}
+
+func runBlobStats(cmd *cobra.Command, args []string) error {
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Minute)
+	defer cancel()
+
+	// Connect to database
+	var db *sql.DB
+	var err error
+
+	if cfg.IsPostgreSQL() {
+		// PostgreSQL connection string
+		connStr := fmt.Sprintf("host=%s port=%d user=%s dbname=%s sslmode=disable",
+			cfg.Host, cfg.Port, cfg.User, cfg.Database)
+		if cfg.Password != "" {
+			connStr += fmt.Sprintf(" password=%s", cfg.Password)
+		}
+		db, err = sql.Open("pgx", connStr)
+	} else {
+		// MySQL DSN
+		connStr := fmt.Sprintf("%s:%s@tcp(%s:%d)/%s",
+			cfg.User, cfg.Password, cfg.Host, cfg.Port, cfg.Database)
+		db, err = sql.Open("mysql", connStr)
+	}
+	if err != nil {
+		return fmt.Errorf("failed to connect: %w", err)
+	}
+	defer db.Close()
+
+	fmt.Printf("Scanning %s for blob columns...\n\n", cfg.DisplayDatabaseType())
+
+	// Discover blob columns
+	type BlobColumn struct {
+		Schema    string
+		Table     string
+		Column    string
+		DataType  string
+		RowCount  int64
+		TotalSize int64
+		AvgSize   int64
+		MaxSize   int64
+		NullCount int64
+	}
+
+	var columns []BlobColumn
+
+	if cfg.IsPostgreSQL() {
+		query := `
+			SELECT 
+				table_schema,
+				table_name,
+				column_name,
+				data_type
+			FROM information_schema.columns
+			WHERE data_type IN ('bytea', 'oid')
+			  AND table_schema NOT IN ('pg_catalog', 'information_schema')
+			ORDER BY table_schema, table_name, column_name
+		`
+		rows, err := db.QueryContext(ctx, query)
+		if err != nil {
+			return fmt.Errorf("failed to query columns: %w", err)
+		}
+		defer rows.Close()
+
+		for rows.Next() {
+			var col BlobColumn
+			if err := rows.Scan(&col.Schema, &col.Table, &col.Column, &col.DataType); err != nil {
+				continue
+			}
+			columns = append(columns, col)
+		}
+	} else {
+		query := `
+			SELECT 
+				TABLE_SCHEMA,
+				TABLE_NAME,
+				COLUMN_NAME,
+				DATA_TYPE
+			FROM information_schema.COLUMNS
+			WHERE DATA_TYPE IN ('blob', 'mediumblob', 'longblob', 'tinyblob', 'binary', 'varbinary')
+			  AND TABLE_SCHEMA NOT IN ('mysql', 'information_schema', 'performance_schema', 'sys')
+			ORDER BY TABLE_SCHEMA, TABLE_NAME, COLUMN_NAME
+		`
+		rows, err := db.QueryContext(ctx, query)
+		if err != nil {
+			return fmt.Errorf("failed to query columns: %w", err)
+		}
+		defer rows.Close()
+
+		for rows.Next() {
+			var col BlobColumn
+			if err := rows.Scan(&col.Schema, &col.Table, &col.Column, &col.DataType); err != nil {
+				continue
+			}
+			columns = append(columns, col)
+		}
+	}
+
+	if len(columns) == 0 {
+		fmt.Println("✓ No blob columns found in this database")
+		return nil
+	}
+
+	fmt.Printf("Found %d blob column(s), scanning sizes...\n\n", len(columns))
+
+	// Scan each column for size stats
+	var totalBlobs, totalSize int64
+	for i := range columns {
+		col := &columns[i]
+
+		var query string
+		var fullName, colName string
+
+		if cfg.IsPostgreSQL() {
+			fullName = fmt.Sprintf(`"%s"."%s"`, col.Schema, col.Table)
+			colName = fmt.Sprintf(`"%s"`, col.Column)
+			query = fmt.Sprintf(`
+				SELECT 
+					COUNT(*),
+					COALESCE(SUM(COALESCE(octet_length(%s), 0)), 0),
+					COALESCE(AVG(COALESCE(octet_length(%s), 0)), 0),
+					COALESCE(MAX(COALESCE(octet_length(%s), 0)), 0),
+					COUNT(*) - COUNT(%s)
+				FROM %s
+			`, colName, colName, colName, colName, fullName)
+		} else {
+			fullName = fmt.Sprintf("`%s`.`%s`", col.Schema, col.Table)
+			colName = fmt.Sprintf("`%s`", col.Column)
+			query = fmt.Sprintf(`
+				SELECT 
+					COUNT(*),
+					COALESCE(SUM(COALESCE(LENGTH(%s), 0)), 0),
+					COALESCE(AVG(COALESCE(LENGTH(%s), 0)), 0),
+					COALESCE(MAX(COALESCE(LENGTH(%s), 0)), 0),
+					COUNT(*) - COUNT(%s)
+				FROM %s
+			`, colName, colName, colName, colName, fullName)
+		}
+
+		scanCtx, scanCancel := context.WithTimeout(ctx, 30*time.Second)
+		row := db.QueryRowContext(scanCtx, query)
+		var avgSize float64
+		err := row.Scan(&col.RowCount, &col.TotalSize, &avgSize, &col.MaxSize, &col.NullCount)
+		col.AvgSize = int64(avgSize)
+		scanCancel()
+
+		if err != nil {
+			log.Warn("Failed to scan column", "table", fullName, "column", col.Column, "error", err)
+			continue
+		}
+
+		totalBlobs += col.RowCount - col.NullCount
+		totalSize += col.TotalSize
+	}
+
+	// Print summary
+	fmt.Printf("═══════════════════════════════════════════════════════════════════\n")
+	fmt.Printf("BLOB STATISTICS SUMMARY\n")
+	fmt.Printf("═══════════════════════════════════════════════════════════════════\n")
+	fmt.Printf("Total blob columns:  %d\n", len(columns))
+	fmt.Printf("Total blob values:   %s\n", formatNumberWithCommas(totalBlobs))
+	fmt.Printf("Total blob size:     %s\n", formatBytesHuman(totalSize))
+	fmt.Printf("═══════════════════════════════════════════════════════════════════\n\n")
+
+	// Print detailed table
+	w := tabwriter.NewWriter(os.Stdout, 0, 0, 2, ' ', 0)
+	fmt.Fprintf(w, "SCHEMA\tTABLE\tCOLUMN\tTYPE\tROWS\tNON-NULL\tTOTAL SIZE\tAVG SIZE\tMAX SIZE\n")
+	fmt.Fprintf(w, "──────\t─────\t──────\t────\t────\t────────\t──────────\t────────\t────────\n")
+
+	for _, col := range columns {
+		nonNull := col.RowCount - col.NullCount
+		fmt.Fprintf(w, "%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\n",
+			truncateBlobStr(col.Schema, 15),
+			truncateBlobStr(col.Table, 20),
+			truncateBlobStr(col.Column, 15),
+			col.DataType,
+			formatNumberWithCommas(col.RowCount),
+			formatNumberWithCommas(nonNull),
+			formatBytesHuman(col.TotalSize),
+			formatBytesHuman(col.AvgSize),
+			formatBytesHuman(col.MaxSize),
+		)
+	}
+	w.Flush()
+
+	// Show top tables by size
+	if len(columns) > 1 {
+		fmt.Println("\n───────────────────────────────────────────────────────────────────")
+		fmt.Println("TOP TABLES BY BLOB SIZE:")
+
+		// Simple sort (bubble sort is fine for small lists)
+		for i := 0; i < len(columns)-1; i++ {
+			for j := i + 1; j < len(columns); j++ {
+				if columns[j].TotalSize > columns[i].TotalSize {
+					columns[i], columns[j] = columns[j], columns[i]
+				}
+			}
+		}
+
+		for i, col := range columns {
+			if i >= 5 || col.TotalSize == 0 {
+				break
+			}
+			pct := float64(col.TotalSize) / float64(totalSize) * 100
+			fmt.Printf("  %d. %s.%s.%s: %s (%.1f%%)\n",
+				i+1, col.Schema, col.Table, col.Column,
+				formatBytesHuman(col.TotalSize), pct)
+		}
+	}
+
+	// Recommendations
+	if totalSize > 100*1024*1024 { // > 100MB
+		fmt.Println("\n───────────────────────────────────────────────────────────────────")
+		fmt.Println("RECOMMENDATIONS:")
+		fmt.Printf("  • You have %s of blob data which could benefit from extraction\n", formatBytesHuman(totalSize))
+		fmt.Println("  • Consider using 'dbbackup blob extract' to externalize large objects")
+		fmt.Println("  • This can improve backup speed and deduplication ratios")
+	}
+
+	return nil
+}
+
+func formatBytesHuman(bytes int64) string {
+	const unit = 1024
+	if bytes < unit {
+		return fmt.Sprintf("%d B", bytes)
+	}
+	div, exp := int64(unit), 0
+	for n := bytes / unit; n >= unit; n /= unit {
+		div *= unit
+		exp++
+	}
+	return fmt.Sprintf("%.1f %cB", float64(bytes)/float64(div), "KMGTPE"[exp])
+}
+
+func formatNumberWithCommas(n int64) string {
+	str := fmt.Sprintf("%d", n)
+	if len(str) <= 3 {
+		return str
+	}
+
+	var result strings.Builder
+	for i, c := range str {
+		if i > 0 && (len(str)-i)%3 == 0 {
+			result.WriteRune(',')
+		}
+		result.WriteRune(c)
+	}
+	return result.String()
+}
+
+func truncateBlobStr(s string, max int) string {
+	if len(s) <= max {
+		return s
+	}
+	return s[:max-1] + "…"
+}

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

@@ -30,7 +30,12 @@ Configuration via flags or environment variables:
   --cloud-region        DBBACKUP_CLOUD_REGION
   --cloud-endpoint      DBBACKUP_CLOUD_ENDPOINT
   --cloud-access-key    DBBACKUP_CLOUD_ACCESS_KEY (or AWS_ACCESS_KEY_ID)
-  --cloud-secret-key    DBBACKUP_CLOUD_SECRET_KEY (or AWS_SECRET_ACCESS_KEY)`,
+  --cloud-secret-key    DBBACKUP_CLOUD_SECRET_KEY (or AWS_SECRET_ACCESS_KEY)
+  --bandwidth-limit     DBBACKUP_BANDWIDTH_LIMIT
+
+Bandwidth Limiting:
+  Limit upload/download speed to avoid saturating network during business hours.
+  Examples: 10MB/s, 50MiB/s, 100Mbps, unlimited`,
 }
 
 var cloudUploadCmd = &cobra.Command{
@@ -103,15 +108,16 @@ Examples:
 }
 
 var (
-	cloudProvider  string
-	cloudBucket    string
-	cloudRegion    string
-	cloudEndpoint  string
-	cloudAccessKey string
-	cloudSecretKey string
-	cloudPrefix    string
-	cloudVerbose   bool
-	cloudConfirm   bool
+	cloudProvider       string
+	cloudBucket         string
+	cloudRegion         string
+	cloudEndpoint       string
+	cloudAccessKey      string
+	cloudSecretKey      string
+	cloudPrefix         string
+	cloudVerbose        bool
+	cloudConfirm        bool
+	cloudBandwidthLimit string
 )
 
 func init() {
@@ -127,6 +133,7 @@ func init() {
 		cmd.Flags().StringVar(&cloudAccessKey, "cloud-access-key", getEnv("DBBACKUP_CLOUD_ACCESS_KEY", getEnv("AWS_ACCESS_KEY_ID", "")), "Access key")
 		cmd.Flags().StringVar(&cloudSecretKey, "cloud-secret-key", getEnv("DBBACKUP_CLOUD_SECRET_KEY", getEnv("AWS_SECRET_ACCESS_KEY", "")), "Secret key")
 		cmd.Flags().StringVar(&cloudPrefix, "cloud-prefix", getEnv("DBBACKUP_CLOUD_PREFIX", ""), "Key prefix")
+		cmd.Flags().StringVar(&cloudBandwidthLimit, "bandwidth-limit", getEnv("DBBACKUP_BANDWIDTH_LIMIT", ""), "Bandwidth limit (e.g., 10MB/s, 100Mbps, 50MiB/s)")
 		cmd.Flags().BoolVarP(&cloudVerbose, "verbose", "v", false, "Verbose output")
 	}
 
@@ -141,24 +148,40 @@ func getEnv(key, defaultValue string) string {
 }
 
 func getCloudBackend() (cloud.Backend, error) {
+	// Parse bandwidth limit
+	var bandwidthLimit int64
+	if cloudBandwidthLimit != "" {
+		var err error
+		bandwidthLimit, err = cloud.ParseBandwidth(cloudBandwidthLimit)
+		if err != nil {
+			return nil, fmt.Errorf("invalid bandwidth limit: %w", err)
+		}
+	}
+
 	cfg := &cloud.Config{
-		Provider:   cloudProvider,
-		Bucket:     cloudBucket,
-		Region:     cloudRegion,
-		Endpoint:   cloudEndpoint,
-		AccessKey:  cloudAccessKey,
-		SecretKey:  cloudSecretKey,
-		Prefix:     cloudPrefix,
-		UseSSL:     true,
-		PathStyle:  cloudProvider == "minio",
-		Timeout:    300,
-		MaxRetries: 3,
+		Provider:       cloudProvider,
+		Bucket:         cloudBucket,
+		Region:         cloudRegion,
+		Endpoint:       cloudEndpoint,
+		AccessKey:      cloudAccessKey,
+		SecretKey:      cloudSecretKey,
+		Prefix:         cloudPrefix,
+		UseSSL:         true,
+		PathStyle:      cloudProvider == "minio",
+		Timeout:        300,
+		MaxRetries:     3,
+		BandwidthLimit: bandwidthLimit,
 	}
 
 	if cfg.Bucket == "" {
 		return nil, fmt.Errorf("bucket name is required (use --cloud-bucket or DBBACKUP_CLOUD_BUCKET)")
 	}
 
+	// Log bandwidth limit if set
+	if bandwidthLimit > 0 {
+		fmt.Printf("📊 Bandwidth limit: %s\n", cloud.FormatBandwidth(bandwidthLimit))
+	}
+
 	backend, err := cloud.NewBackend(cfg)
 	if err != nil {
 		return nil, fmt.Errorf("failed to create cloud backend: %w", err)
@@ -189,12 +212,12 @@ 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 +237,21 @@ 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 +271,8 @@ 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 +297,9 @@ 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 +317,7 @@ 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 +334,7 @@ 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 +351,7 @@ 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 +383,7 @@ 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 +393,14 @@ 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 (
+	"crypto/sha256"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"time"
+
+	"dbbackup/internal/dedup"
+
+	"github.com/klauspost/pgzip"
+	"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
+	dedupMetricsServer 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(&dedupMetricsServer, "server", "", "Server 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 := pgzip.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.NewChunkIndexAt(getIndexDBPath())
+	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.NewChunkIndexAt(getIndexDBPath())
+	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.NewChunkIndexAt(getIndexDBPath())
+	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()
+
+	server := dedupMetricsServer
+	if server == "" {
+		hostname, _ := os.Hostname()
+		server = hostname
+	}
+
+	metrics, err := dedup.CollectMetrics(basePath, indexPath)
+	if err != nil {
+		return fmt.Errorf("failed to collect metrics: %w", err)
+	}
+
+	output := dedup.FormatPrometheusMetrics(metrics, server)
+
+	if dedupMetricsOutput != "" {
+		if err := dedup.WritePrometheusTextfile(dedupMetricsOutput, server, 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

@@ -16,8 +16,7 @@ import (
 )
 
 var (
-	drillBackupPath     string
-	drillDatabaseName   string
+	drillDatabaseName string
 	drillDatabaseType   string
 	drillImage          string
 	drillPort           int
@@ -318,7 +317,7 @@ 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 +344,7 @@ func runDrillCleanup(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	fmt.Println("✅ Cleanup completed")
+	fmt.Println("[OK] Cleanup completed")
 	return nil
 }
 
@@ -369,32 +368,32 @@ 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 +411,10 @@ 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 +423,11 @@ 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 +439,11 @@ 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 +452,7 @@ 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 +460,7 @@ 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 +469,14 @@ 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/encryption.go

@@ -65,13 +65,3 @@ func loadEncryptionKey(keyFile, keyEnvVar string) ([]byte, error) {
 func isEncryptionEnabled() bool {
 	return encryptBackupFlag
 }
-
-// generateEncryptionKey generates a new random encryption key
-func generateEncryptionKey() ([]byte, error) {
-	salt, err := crypto.GenerateSalt()
-	if err != nil {
-		return nil, err
-	}
-	// For key generation, use salt as both password and salt (random)
-	return crypto.DeriveKey(salt, salt), nil
-}

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

@@ -0,0 +1,239 @@
+package cmd
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"os/exec"
+	"os/signal"
+	"strings"
+	"syscall"
+
+	"dbbackup/internal/installer"
+
+	"github.com/spf13/cobra"
+)
+
+var (
+	// Install flags
+	installInstance    string
+	installSchedule    string
+	installBackupType  string
+	installUser        string
+	installGroup       string
+	installBackupDir   string
+	installConfigPath  string
+	installTimeout     int
+	installWithMetrics bool
+	installMetricsPort int
+	installDryRun      bool
+	installStatus      bool
+
+	// Uninstall flags
+	uninstallPurge bool
+)
+
+// installCmd represents the install command
+var installCmd = &cobra.Command{
+	Use:   "install",
+	Short: "Install dbbackup as a systemd service",
+	Long: `Install dbbackup as a systemd service with automatic scheduling.
+
+This command creates systemd service and timer units for automated database backups.
+It supports both single database and cluster backup modes.
+
+Examples:
+  # Interactive installation (will prompt for options)
+  sudo dbbackup install
+
+  # Install cluster backup running daily at 2am
+  sudo dbbackup install --backup-type cluster --schedule "daily"
+
+  # Install single database backup with custom schedule
+  sudo dbbackup install --instance production --backup-type single --schedule "*-*-* 03:00:00"
+
+  # Install with Prometheus metrics exporter
+  sudo dbbackup install --with-metrics --metrics-port 9399
+
+  # Check installation status
+  dbbackup install --status
+
+  # Dry-run to see what would be installed
+  sudo dbbackup install --dry-run
+
+Schedule format (OnCalendar):
+  daily           - Every day at midnight
+  weekly          - Every Monday at midnight
+  *-*-* 02:00:00  - Every day at 2am
+  *-*-* 02,14:00  - Twice daily at 2am and 2pm
+  Mon *-*-* 03:00 - Every Monday at 3am
+`,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		// Handle --status flag
+		if installStatus {
+			return runInstallStatus(cmd.Context())
+		}
+
+		return runInstall(cmd.Context())
+	},
+}
+
+// uninstallCmd represents the uninstall command
+var uninstallCmd = &cobra.Command{
+	Use:   "uninstall [instance]",
+	Short: "Uninstall dbbackup systemd service",
+	Long: `Uninstall dbbackup systemd service and timer.
+
+Examples:
+  # Uninstall default instance
+  sudo dbbackup uninstall
+
+  # Uninstall specific instance
+  sudo dbbackup uninstall production
+
+  # Uninstall and remove all configuration
+  sudo dbbackup uninstall --purge
+`,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		instance := "cluster"
+		if len(args) > 0 {
+			instance = args[0]
+		}
+		return runUninstall(cmd.Context(), instance)
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(installCmd)
+	rootCmd.AddCommand(uninstallCmd)
+
+	// Install flags
+	installCmd.Flags().StringVarP(&installInstance, "instance", "i", "", "Instance name (e.g., production, staging)")
+	installCmd.Flags().StringVarP(&installSchedule, "schedule", "s", "daily", "Backup schedule (OnCalendar format)")
+	installCmd.Flags().StringVarP(&installBackupType, "backup-type", "t", "cluster", "Backup type: single or cluster")
+	installCmd.Flags().StringVar(&installUser, "user", "dbbackup", "System user to run backups")
+	installCmd.Flags().StringVar(&installGroup, "group", "dbbackup", "System group for backup user")
+	installCmd.Flags().StringVar(&installBackupDir, "backup-dir", "/var/lib/dbbackup/backups", "Directory for backups")
+	installCmd.Flags().StringVar(&installConfigPath, "config-path", "/etc/dbbackup/dbbackup.conf", "Path to config file")
+	installCmd.Flags().IntVar(&installTimeout, "timeout", 3600, "Backup timeout in seconds")
+	installCmd.Flags().BoolVar(&installWithMetrics, "with-metrics", false, "Install Prometheus metrics exporter")
+	installCmd.Flags().IntVar(&installMetricsPort, "metrics-port", 9399, "Prometheus metrics port")
+	installCmd.Flags().BoolVar(&installDryRun, "dry-run", false, "Show what would be installed without making changes")
+	installCmd.Flags().BoolVar(&installStatus, "status", false, "Show installation status")
+
+	// Uninstall flags
+	uninstallCmd.Flags().BoolVar(&uninstallPurge, "purge", false, "Also remove configuration files")
+}
+
+func runInstall(ctx context.Context) error {
+	// Create context with signal handling
+	ctx, cancel := signal.NotifyContext(ctx, os.Interrupt, syscall.SIGTERM)
+	defer cancel()
+
+	// Expand schedule shortcuts
+	schedule := expandSchedule(installSchedule)
+
+	// Create installer
+	inst := installer.NewInstaller(log, installDryRun)
+
+	// Set up options
+	opts := installer.InstallOptions{
+		Instance:       installInstance,
+		BackupType:     installBackupType,
+		Schedule:       schedule,
+		User:           installUser,
+		Group:          installGroup,
+		BackupDir:      installBackupDir,
+		ConfigPath:     installConfigPath,
+		TimeoutSeconds: installTimeout,
+		WithMetrics:    installWithMetrics,
+		MetricsPort:    installMetricsPort,
+	}
+
+	// For cluster backup, override instance
+	if installBackupType == "cluster" {
+		opts.Instance = "cluster"
+	}
+
+	return inst.Install(ctx, opts)
+}
+
+func runUninstall(ctx context.Context, instance string) error {
+	ctx, cancel := signal.NotifyContext(ctx, os.Interrupt, syscall.SIGTERM)
+	defer cancel()
+
+	inst := installer.NewInstaller(log, false)
+	return inst.Uninstall(ctx, instance, uninstallPurge)
+}
+
+func runInstallStatus(ctx context.Context) error {
+	inst := installer.NewInstaller(log, false)
+
+	// Check cluster status
+	clusterStatus, err := inst.Status(ctx, "cluster")
+	if err != nil {
+		return err
+	}
+
+	fmt.Println()
+	fmt.Println("[STATUS] DBBackup Installation Status")
+	fmt.Println(strings.Repeat("=", 50))
+
+	if clusterStatus.Installed {
+		fmt.Println()
+		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 != "" {
+			fmt.Printf("   Next run: %s\n", clusterStatus.NextRun)
+		}
+		if clusterStatus.LastRun != "" {
+			fmt.Printf("   Last run: %s\n", clusterStatus.LastRun)
+		}
+	} else {
+		fmt.Println()
+		fmt.Println("[NONE] No systemd services installed")
+		fmt.Println()
+		fmt.Println("Run 'sudo dbbackup install' to install as a systemd service")
+	}
+
+	// Check for exporter
+	if _, err := os.Stat("/etc/systemd/system/dbbackup-exporter.service"); err == nil {
+		fmt.Println()
+		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:  [OK] active\n")
+		} else {
+			fmt.Printf("   Service:  [-] inactive\n")
+		}
+	}
+
+	fmt.Println()
+	return nil
+}
+
+func formatStatus(installed, active bool) string {
+	if !installed {
+		return "not installed"
+	}
+	if active {
+		return "[OK] active"
+	}
+	return "[-] inactive"
+}
+
+func expandSchedule(schedule string) string {
+	shortcuts := map[string]string{
+		"hourly":  "*-*-* *:00:00",
+		"daily":   "*-*-* 02:00:00",
+		"weekly":  "Mon *-*-* 02:00:00",
+		"monthly": "*-*-01 02:00:00",
+	}
+
+	if expanded, ok := shortcuts[strings.ToLower(schedule)]; ok {
+		return expanded
+	}
+	return schedule
+}

cmd/metrics.go

@@ -0,0 +1,138 @@
+package cmd
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"dbbackup/internal/prometheus"
+
+	"github.com/spf13/cobra"
+)
+
+var (
+	metricsServer string
+	metricsOutput string
+	metricsPort   int
+)
+
+// metricsCmd represents the metrics command
+var metricsCmd = &cobra.Command{
+	Use:   "metrics",
+	Short: "Prometheus metrics management",
+	Long: `Prometheus metrics management for dbbackup.
+
+Export metrics to a textfile for node_exporter, or run an HTTP server
+for direct Prometheus scraping.`,
+}
+
+// metricsExportCmd exports metrics to a textfile
+var metricsExportCmd = &cobra.Command{
+	Use:   "export",
+	Short: "Export metrics to textfile",
+	Long: `Export Prometheus metrics to a textfile for node_exporter.
+
+The textfile collector in node_exporter can scrape metrics from files
+in a designated directory (typically /var/lib/node_exporter/textfile_collector/).
+
+Examples:
+  # Export metrics to default location
+  dbbackup metrics export
+
+  # Export with custom output path
+  dbbackup metrics export --output /var/lib/dbbackup/metrics/dbbackup.prom
+
+  # Export for specific instance
+  dbbackup metrics export --server production --output /var/lib/dbbackup/metrics/production.prom
+
+After export, configure node_exporter with:
+  --collector.textfile.directory=/var/lib/dbbackup/metrics/
+`,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		return runMetricsExport(cmd.Context())
+	},
+}
+
+// metricsServeCmd runs the HTTP metrics server
+var metricsServeCmd = &cobra.Command{
+	Use:   "serve",
+	Short: "Run Prometheus HTTP server",
+	Long: `Run an HTTP server exposing Prometheus metrics.
+
+This starts a long-running daemon that serves metrics at /metrics.
+Prometheus can scrape this endpoint directly.
+
+Examples:
+  # Start server on default port 9399
+  dbbackup metrics serve
+
+  # Start server on custom port
+  dbbackup metrics serve --port 9100
+
+  # Run as systemd service (installed via 'dbbackup install --with-metrics')
+  sudo systemctl start dbbackup-exporter
+
+Endpoints:
+  /metrics  - Prometheus metrics
+  /health   - Health check (returns 200 OK)
+  /         - Service info page
+`,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		return runMetricsServe(cmd.Context())
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(metricsCmd)
+	metricsCmd.AddCommand(metricsExportCmd)
+	metricsCmd.AddCommand(metricsServeCmd)
+
+	// Export flags
+	metricsExportCmd.Flags().StringVar(&metricsServer, "server", "default", "Server name for metrics labels")
+	metricsExportCmd.Flags().StringVarP(&metricsOutput, "output", "o", "/var/lib/dbbackup/metrics/dbbackup.prom", "Output file path")
+
+	// Serve flags
+	metricsServeCmd.Flags().StringVar(&metricsServer, "server", "default", "Server name for metrics labels")
+	metricsServeCmd.Flags().IntVarP(&metricsPort, "port", "p", 9399, "HTTP server port")
+}
+
+func runMetricsExport(ctx context.Context) error {
+	// Open catalog
+	cat, err := openCatalog()
+	if err != nil {
+		return fmt.Errorf("failed to open catalog: %w", err)
+	}
+	defer cat.Close()
+
+	// Create metrics writer
+	writer := prometheus.NewMetricsWriter(log, cat, metricsServer)
+
+	// Write textfile
+	if err := writer.WriteTextfile(metricsOutput); err != nil {
+		return fmt.Errorf("failed to write metrics: %w", err)
+	}
+
+	log.Info("Exported metrics to textfile", "path", metricsOutput, "server", metricsServer)
+	return nil
+}
+
+func runMetricsServe(ctx context.Context) error {
+	// Setup signal handling
+	ctx, cancel := signal.NotifyContext(ctx, os.Interrupt, syscall.SIGTERM)
+	defer cancel()
+
+	// Open catalog
+	cat, err := openCatalog()
+	if err != nil {
+		return fmt.Errorf("failed to open catalog: %w", err)
+	}
+	defer cat.Close()
+
+	// Create exporter
+	exporter := prometheus.NewExporter(log, cat, metricsServer, metricsPort)
+
+	// Run server (blocks until context is cancelled)
+	return exporter.Serve(ctx)
+}

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

@@ -5,7 +5,6 @@ import (
 	"database/sql"
 	"fmt"
 	"os"
-	"path/filepath"
 	"time"
 
 	"github.com/spf13/cobra"
@@ -44,7 +43,6 @@ var (
 	mysqlArchiveInterval  string
 	mysqlRequireRowFormat bool
 	mysqlRequireGTID      bool
-	mysqlWatchMode        bool
 )
 
 // pitrCmd represents the pitr command group
@@ -436,7 +434,7 @@ 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 +461,7 @@ 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 +481,15 @@ 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 +508,7 @@ 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 +572,13 @@ 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 +642,7 @@ 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 +669,7 @@ 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 +688,7 @@ 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 +757,15 @@ 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 +795,7 @@ 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 +912,7 @@ 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 +1012,15 @@ 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 +1053,7 @@ 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 +1092,9 @@ 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 +1176,24 @@ 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 +1203,14 @@ 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 +1235,12 @@ 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 +1297,7 @@ 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)
@@ -1311,14 +1309,3 @@ func runMySQLPITREnable(cmd *cobra.Command, args []string) error {
 
 	return nil
 }
-
-// getMySQLBinlogDir attempts to determine the binlog directory from MySQL
-func getMySQLBinlogDir(ctx context.Context, db *sql.DB) (string, error) {
-	var logBinBasename string
-	err := db.QueryRowContext(ctx, "SELECT @@log_bin_basename").Scan(&logBinBasename)
-	if err != nil {
-		return "", err
-	}
-
-	return filepath.Dir(logBinBasename), nil
-}

cmd/placeholder.go

@@ -1,7 +1,6 @@
 package cmd
 
 import (
-	"compress/gzip"
 	"context"
 	"fmt"
 	"io"
@@ -15,6 +14,7 @@ import (
 	"dbbackup/internal/logger"
 	"dbbackup/internal/tui"
 
+	"github.com/klauspost/pgzip"
 	"github.com/spf13/cobra"
 )
 
@@ -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)
 	}
 }
@@ -382,92 +391,6 @@ func checkSystemResources() error {
 	return nil
 }
 
-// runRestore restores database from backup archive
-func runRestore(ctx context.Context, archiveName string) error {
-	fmt.Println("==============================================================")
-	fmt.Println(" Database Restore")
-	fmt.Println("==============================================================")
-
-	// Construct full path to archive
-	archivePath := filepath.Join(cfg.BackupDir, archiveName)
-
-	// Check if archive exists
-	if _, err := os.Stat(archivePath); os.IsNotExist(err) {
-		return fmt.Errorf("backup archive not found: %s", archivePath)
-	}
-
-	// Detect archive type
-	archiveType := detectArchiveType(archiveName)
-	fmt.Printf("Archive: %s\n", archiveName)
-	fmt.Printf("Type: %s\n", archiveType)
-	fmt.Printf("Location: %s\n", archivePath)
-	fmt.Println()
-
-	// Get archive info
-	stat, err := os.Stat(archivePath)
-	if err != nil {
-		return fmt.Errorf("cannot access archive: %w", err)
-	}
-
-	fmt.Printf("Size: %s\n", formatFileSize(stat.Size()))
-	fmt.Printf("Created: %s\n", stat.ModTime().Format("2006-01-02 15:04:05"))
-	fmt.Println()
-
-	// Show warning
-	fmt.Println("⚠️  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.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.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.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.Printf("   Command: %s\n", mysqlRestoreCommand(archivePath, false))
-		} else {
-			fmt.Println("🔄 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.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.Printf("   Command: %s\n", mysqlRestoreCommand(archivePath, true))
-		} else {
-			fmt.Println("🔄 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("   Steps:")
-		fmt.Println("   1. Extract tar.gz archive")
-		fmt.Println("   2. Restore global objects (roles, tablespaces)")
-		fmt.Println("   3. Restore individual databases")
-	default:
-		return fmt.Errorf("unsupported archive type: %s", archiveType)
-	}
-
-	fmt.Println()
-	fmt.Println("🛡️  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).")
-
-	return nil
-}
-
 func detectArchiveType(filename string) string {
 	switch {
 	case strings.HasSuffix(filename, ".dump.gz"):
@@ -520,25 +443,25 @@ 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 +469,51 @@ 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 +521,11 @@ 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 +534,13 @@ 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)
 	}
 }
@@ -649,7 +572,7 @@ func verifyPgDumpGzip(path string) error {
 	}
 	defer file.Close()
 
-	gz, err := gzip.NewReader(file)
+	gz, err := pgzip.NewReader(file)
 	if err != nil {
 		return fmt.Errorf("failed to open gzip stream: %w", err)
 	}
@@ -698,7 +621,7 @@ func verifyGzipSqlScript(path string) error {
 	}
 	defer file.Close()
 
-	gz, err := gzip.NewReader(file)
+	gz, err := pgzip.NewReader(file)
 	if err != nil {
 		return fmt.Errorf("failed to open gzip stream: %w", err)
 	}
@@ -766,33 +689,3 @@ func containsSQLKeywords(content string) bool {
 
 	return false
 }
-
-func mysqlRestoreCommand(archivePath string, compressed bool) string {
-	parts := []string{"mysql"}
-
-	// Only add -h flag if host is not localhost (to use Unix socket)
-	if cfg.Host != "localhost" && cfg.Host != "127.0.0.1" && cfg.Host != "" {
-		parts = append(parts, "-h", cfg.Host)
-	}
-
-	parts = append(parts,
-		"-P", fmt.Sprintf("%d", cfg.Port),
-		"-u", cfg.User,
-	)
-
-	if cfg.Password != "" {
-		parts = append(parts, fmt.Sprintf("-p'%s'", cfg.Password))
-	}
-
-	if cfg.Database != "" {
-		parts = append(parts, cfg.Database)
-	}
-
-	command := strings.Join(parts, " ")
-
-	if compressed {
-		return fmt.Sprintf("gunzip -c %s | %s", archivePath, command)
-	}
-
-	return fmt.Sprintf("%s < %s", command, archivePath)
-}

cmd/restore.go

@@ -13,8 +13,11 @@ import (
 
 	"dbbackup/internal/backup"
 	"dbbackup/internal/cloud"
+	"dbbackup/internal/config"
 	"dbbackup/internal/database"
+	"dbbackup/internal/notify"
 	"dbbackup/internal/pitr"
+	"dbbackup/internal/progress"
 	"dbbackup/internal/restore"
 	"dbbackup/internal/security"
 
@@ -22,24 +25,35 @@ import (
 )
 
 var (
-	restoreConfirm      bool
-	restoreDryRun       bool
-	restoreForce        bool
-	restoreClean        bool
-	restoreCreate       bool
-	restoreJobs         int
-	restoreTarget       string
-	restoreVerbose      bool
-	restoreNoProgress   bool
-	restoreWorkdir      string
-	restoreCleanCluster bool
-	restoreDiagnose     bool   // Run diagnosis before restore
-	restoreSaveDebugLog string // Path to save debug log on failure
+	restoreConfirm       bool
+	restoreDryRun        bool
+	restoreForce         bool
+	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
+	restoreWorkdir       string
+	restoreCleanCluster  bool
+	restoreDiagnose      bool   // Run diagnosis before restore
+	restoreSaveDebugLog  string // Path to save debug log on failure
+	restoreDebugLocks    bool   // Enable detailed lock debugging
+	restoreOOMProtection bool   // Enable OOM protection for large restores
+	restoreLowMemory     bool   // Force low-memory mode for constrained systems
+
+	// 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 +125,9 @@ 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 +147,11 @@ 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 +159,33 @@ 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
 
@@ -239,7 +282,7 @@ Use this when:
 Checks performed:
   - File format detection (custom dump vs SQL)
   - PGDMP signature verification
-  - Gzip integrity validation
+  - Compression integrity validation (pgzip)
   - COPY block termination check
   - pg_restore --list verification
   - Cluster archive structure validation
@@ -276,19 +319,27 @@ 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 +347,11 @@ 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)")
+	restoreClusterCmd.Flags().BoolVar(&restoreOOMProtection, "oom-protection", false, "Enable OOM protection: disable swap, tune PostgreSQL memory, protect from OOM killer")
+	restoreClusterCmd.Flags().BoolVar(&restoreLowMemory, "low-memory", false, "Force low-memory mode: single-threaded restore with minimal memory (use for <8GB RAM or very large backups)")
 
 	// PITR restore flags
 	restorePITRCmd.Flags().StringVar(&pitrBaseBackup, "base-backup", "", "Path to base backup file (.tar.gz) (required)")
@@ -342,7 +398,7 @@ 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 +406,11 @@ 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 +443,7 @@ 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 +453,9 @@ 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 +482,7 @@ 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 +490,16 @@ 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 +611,7 @@ 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 +631,19 @@ 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 +660,18 @@ 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 +679,13 @@ 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")
 		}
 	}
 
@@ -624,15 +697,37 @@ func runRestoreSingle(cmd *cobra.Command, args []string) error {
 	startTime := time.Now()
 	auditLogger.LogRestoreStart(user, targetDB, archivePath)
 
+	// Notify: restore started
+	if notifyManager != nil {
+		notifyManager.Notify(notify.NewEvent(notify.EventRestoreStarted, notify.SeverityInfo, "Database restore started").
+			WithDatabase(targetDB).
+			WithDetail("archive", filepath.Base(archivePath)))
+	}
+
 	if err := engine.RestoreSingle(ctx, archivePath, targetDB, restoreClean, restoreCreate); err != nil {
 		auditLogger.LogRestoreFailed(user, targetDB, err)
+		// Notify: restore failed
+		if notifyManager != nil {
+			notifyManager.Notify(notify.NewEvent(notify.EventRestoreFailed, notify.SeverityError, "Database restore failed").
+				WithDatabase(targetDB).
+				WithError(err).
+				WithDuration(time.Since(startTime)))
+		}
 		return fmt.Errorf("restore failed: %w", err)
 	}
 
 	// Audit log: restore success
 	auditLogger.LogRestoreComplete(user, targetDB, time.Since(startTime))
 
-	log.Info("✅ Restore completed successfully", "database", targetDB)
+	// Notify: restore completed
+	if notifyManager != nil {
+		notifyManager.Notify(notify.NewEvent(notify.EventRestoreCompleted, notify.SeveritySuccess, "Database restore completed successfully").
+			WithDatabase(targetDB).
+			WithDuration(time.Since(startTime)).
+			WithDetail("archive", filepath.Base(archivePath)))
+	}
+
+	log.Info("[OK] Restore completed successfully", "database", targetDB)
 	return nil
 }
 
@@ -654,6 +749,203 @@ 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 +992,7 @@ 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 +1045,7 @@ 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 +1055,7 @@ 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 +1067,39 @@ 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 +1135,52 @@ 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 +1189,24 @@ 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))
 		}
 	}
 
@@ -880,15 +1218,37 @@ 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 {
+	// Notify: restore started
+	if notifyManager != nil {
+		notifyManager.Notify(notify.NewEvent(notify.EventRestoreStarted, notify.SeverityInfo, "Cluster restore started").
+			WithDatabase("all_databases").
+			WithDetail("archive", filepath.Base(archivePath)))
+	}
+
+	// Pass pre-extracted directory to avoid double extraction
+	if err := engine.RestoreCluster(ctx, archivePath, extractedDir); err != nil {
 		auditLogger.LogRestoreFailed(user, "all_databases", err)
+		// Notify: restore failed
+		if notifyManager != nil {
+			notifyManager.Notify(notify.NewEvent(notify.EventRestoreFailed, notify.SeverityError, "Cluster restore failed").
+				WithDatabase("all_databases").
+				WithError(err).
+				WithDuration(time.Since(startTime)))
+		}
 		return fmt.Errorf("cluster restore failed: %w", err)
 	}
 
 	// Audit log: restore success
 	auditLogger.LogRestoreComplete(user, "all_databases", time.Since(startTime))
 
-	log.Info("✅ Cluster restore completed successfully")
+	// Notify: restore completed
+	if notifyManager != nil {
+		notifyManager.Notify(notify.NewEvent(notify.EventRestoreCompleted, notify.SeveritySuccess, "Cluster restore completed successfully").
+			WithDatabase("all_databases").
+			WithDuration(time.Since(startTime)))
+	}
+
+	log.Info("[OK] Cluster restore completed successfully")
 	return nil
 }
 
@@ -937,7 +1297,7 @@ 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 +1414,9 @@ 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 +1440,6 @@ 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

@@ -6,6 +6,7 @@ import (
 
 	"dbbackup/internal/config"
 	"dbbackup/internal/logger"
+	"dbbackup/internal/notify"
 	"dbbackup/internal/security"
 
 	"github.com/spf13/cobra"
@@ -13,10 +14,11 @@ import (
 )
 
 var (
-	cfg         *config.Config
-	log         logger.Logger
-	auditLogger *security.AuditLogger
-	rateLimiter *security.RateLimiter
+	cfg           *config.Config
+	log           logger.Logger
+	auditLogger   *security.AuditLogger
+	rateLimiter   *security.RateLimiter
+	notifyManager *notify.Manager
 )
 
 // rootCmd represents the base command when called without any subcommands
@@ -120,6 +122,13 @@ func Execute(ctx context.Context, config *config.Config, logger logger.Logger) e
 	// Initialize rate limiter
 	rateLimiter = security.NewRateLimiter(config.MaxRetries, logger)
 
+	// Initialize notification manager from environment variables
+	notifyCfg := notify.ConfigFromEnv()
+	notifyManager = notify.NewManager(notifyCfg)
+	if notifyManager.HasEnabledNotifiers() {
+		logger.Info("Notifications enabled", "smtp", notifyCfg.SMTPEnabled, "webhook", notifyCfg.WebhookEnabled)
+	}
+
 	// Set version info
 	rootCmd.Version = fmt.Sprintf("%s (built: %s, commit: %s)",
 		cfg.Version, cfg.BuildTime, cfg.GitCommit)
@@ -134,6 +143,7 @@ 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)

cmd/verify_locks.go

@@ -0,0 +1,64 @@
+package cmd
+
+import (
+	"context"
+	"fmt"
+	"os"
+
+	"dbbackup/internal/checks"
+
+	"github.com/spf13/cobra"
+)
+
+var verifyLocksCmd = &cobra.Command{
+	Use:   "verify-locks",
+	Short: "Check PostgreSQL lock settings and print restore guidance",
+	Long:  `Probe PostgreSQL for lock-related GUCs (max_locks_per_transaction, max_connections, max_prepared_transactions) and print capacity + recommended restore options.`,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		return runVerifyLocks(cmd.Context())
+	},
+}
+
+func runVerifyLocks(ctx context.Context) error {
+	p := checks.NewPreflightChecker(cfg, log)
+	res, err := p.RunAllChecks(ctx, cfg.Database)
+	if err != nil {
+		return err
+	}
+
+	// Find the Postgres lock check in the preflight results
+	var chk checks.PreflightCheck
+	found := false
+	for _, c := range res.Checks {
+		if c.Name == "PostgreSQL lock configuration" {
+			chk = c
+			found = true
+			break
+		}
+	}
+	if !found {
+		fmt.Println("No PostgreSQL lock check available (skipped)")
+		return nil
+	}
+
+	fmt.Printf("%s\n", chk.Name)
+	fmt.Printf("Status: %s\n", chk.Status.String())
+	fmt.Printf("%s\n\n", chk.Message)
+	if chk.Details != "" {
+		fmt.Println(chk.Details)
+	}
+
+	// exit non-zero for failures so scripts can react
+	if chk.Status == checks.StatusFailed {
+		os.Exit(2)
+	}
+	if chk.Status == checks.StatusWarning {
+		os.Exit(0)
+	}
+
+	return nil
+}
+
+func init() {
+	rootCmd.AddCommand(verifyLocksCmd)
+}

cmd/verify_restore.go

@@ -0,0 +1,371 @@
+package cmd
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"strings"
+	"time"
+
+	"dbbackup/internal/logger"
+	"dbbackup/internal/verification"
+
+	"github.com/spf13/cobra"
+)
+
+var verifyRestoreCmd = &cobra.Command{
+	Use:   "verify-restore",
+	Short: "Systematic verification for large database restores",
+	Long: `Comprehensive verification tool for large database restores with BLOB support.
+
+This tool performs systematic checks to ensure 100% data integrity after restore:
+- Table counts and row counts verification
+- BLOB/Large Object integrity (PostgreSQL large objects, bytea columns)
+- Table checksums (for non-BLOB tables)
+- Database-specific integrity checks
+- Orphaned object detection
+- Index validity checks
+
+Designed to work with VERY LARGE databases and BLOBs with 100% reliability.
+
+Examples:
+  # Verify a restored PostgreSQL database
+  dbbackup verify-restore --engine postgres --database mydb
+
+  # Verify with connection details
+  dbbackup verify-restore --engine postgres --host localhost --port 5432 \
+    --user postgres --password secret --database mydb
+
+  # Verify a MySQL database
+  dbbackup verify-restore --engine mysql --database mydb
+
+  # Verify and output JSON report
+  dbbackup verify-restore --engine postgres --database mydb --json
+
+  # Compare source and restored database
+  dbbackup verify-restore --engine postgres --database source_db --compare restored_db
+
+  # Verify a backup file before restore
+  dbbackup verify-restore --backup-file /backups/mydb.dump
+
+  # Verify multiple databases in parallel
+  dbbackup verify-restore --engine postgres --databases "db1,db2,db3" --parallel 4`,
+	RunE: runVerifyRestore,
+}
+
+var (
+	verifyEngine     string
+	verifyHost       string
+	verifyPort       int
+	verifyUser       string
+	verifyPassword   string
+	verifyDatabase   string
+	verifyDatabases  string
+	verifyCompareDB  string
+	verifyBackupFile string
+	verifyJSON       bool
+	verifyParallel   int
+)
+
+func init() {
+	rootCmd.AddCommand(verifyRestoreCmd)
+
+	verifyRestoreCmd.Flags().StringVar(&verifyEngine, "engine", "postgres", "Database engine (postgres, mysql)")
+	verifyRestoreCmd.Flags().StringVar(&verifyHost, "host", "localhost", "Database host")
+	verifyRestoreCmd.Flags().IntVar(&verifyPort, "port", 5432, "Database port")
+	verifyRestoreCmd.Flags().StringVar(&verifyUser, "user", "", "Database user")
+	verifyRestoreCmd.Flags().StringVar(&verifyPassword, "password", "", "Database password")
+	verifyRestoreCmd.Flags().StringVar(&verifyDatabase, "database", "", "Database to verify")
+	verifyRestoreCmd.Flags().StringVar(&verifyDatabases, "databases", "", "Comma-separated list of databases to verify")
+	verifyRestoreCmd.Flags().StringVar(&verifyCompareDB, "compare", "", "Compare with another database (source vs restored)")
+	verifyRestoreCmd.Flags().StringVar(&verifyBackupFile, "backup-file", "", "Verify backup file integrity before restore")
+	verifyRestoreCmd.Flags().BoolVar(&verifyJSON, "json", false, "Output results as JSON")
+	verifyRestoreCmd.Flags().IntVar(&verifyParallel, "parallel", 1, "Number of parallel verification workers")
+}
+
+func runVerifyRestore(cmd *cobra.Command, args []string) error {
+	ctx, cancel := context.WithTimeout(context.Background(), 24*time.Hour) // Long timeout for large DBs
+	defer cancel()
+
+	log := logger.New("INFO", "text")
+
+	// Get credentials from environment if not provided
+	if verifyUser == "" {
+		verifyUser = os.Getenv("PGUSER")
+		if verifyUser == "" {
+			verifyUser = os.Getenv("MYSQL_USER")
+		}
+		if verifyUser == "" {
+			verifyUser = "postgres"
+		}
+	}
+
+	if verifyPassword == "" {
+		verifyPassword = os.Getenv("PGPASSWORD")
+		if verifyPassword == "" {
+			verifyPassword = os.Getenv("MYSQL_PASSWORD")
+		}
+	}
+
+	// Set default port based on engine
+	if verifyPort == 5432 && (verifyEngine == "mysql" || verifyEngine == "mariadb") {
+		verifyPort = 3306
+	}
+
+	checker := verification.NewLargeRestoreChecker(log, verifyEngine, verifyHost, verifyPort, verifyUser, verifyPassword)
+
+	// Mode 1: Verify backup file
+	if verifyBackupFile != "" {
+		return verifyBackupFileMode(ctx, checker)
+	}
+
+	// Mode 2: Compare two databases
+	if verifyCompareDB != "" {
+		return verifyCompareMode(ctx, checker)
+	}
+
+	// Mode 3: Verify multiple databases in parallel
+	if verifyDatabases != "" {
+		return verifyMultipleDatabases(ctx, log)
+	}
+
+	// Mode 4: Verify single database
+	if verifyDatabase == "" {
+		return fmt.Errorf("--database is required")
+	}
+
+	return verifySingleDatabase(ctx, checker)
+}
+
+func verifyBackupFileMode(ctx context.Context, checker *verification.LargeRestoreChecker) error {
+	fmt.Println()
+	fmt.Println("╔══════════════════════════════════════════════════════════════╗")
+	fmt.Println("║       🔍 BACKUP FILE VERIFICATION                            ║")
+	fmt.Println("╚══════════════════════════════════════════════════════════════╝")
+	fmt.Println()
+
+	result, err := checker.VerifyBackupFile(ctx, verifyBackupFile)
+	if err != nil {
+		return fmt.Errorf("verification failed: %w", err)
+	}
+
+	if verifyJSON {
+		return outputJSON(result, "")
+	}
+
+	fmt.Printf("  File:           %s\n", result.Path)
+	fmt.Printf("  Size:           %s\n", formatBytes(result.SizeBytes))
+	fmt.Printf("  Format:         %s\n", result.Format)
+	fmt.Printf("  Checksum:       %s\n", result.Checksum)
+
+	if result.TableCount > 0 {
+		fmt.Printf("  Tables:         %d\n", result.TableCount)
+	}
+	if result.LargeObjectCount > 0 {
+		fmt.Printf("  Large Objects:  %d\n", result.LargeObjectCount)
+	}
+
+	fmt.Println()
+
+	if result.Valid {
+		fmt.Println("  ✅ Backup file verification PASSED")
+	} else {
+		fmt.Printf("  ❌ Backup file verification FAILED: %s\n", result.Error)
+		return fmt.Errorf("verification failed")
+	}
+
+	if len(result.Warnings) > 0 {
+		fmt.Println()
+		fmt.Println("  Warnings:")
+		for _, w := range result.Warnings {
+			fmt.Printf("    ⚠️  %s\n", w)
+		}
+	}
+
+	fmt.Println()
+	return nil
+}
+
+func verifyCompareMode(ctx context.Context, checker *verification.LargeRestoreChecker) error {
+	if verifyDatabase == "" {
+		return fmt.Errorf("--database (source) is required for comparison")
+	}
+
+	fmt.Println()
+	fmt.Println("╔══════════════════════════════════════════════════════════════╗")
+	fmt.Println("║       🔍 DATABASE COMPARISON                                 ║")
+	fmt.Println("╚══════════════════════════════════════════════════════════════╝")
+	fmt.Println()
+	fmt.Printf("  Source:  %s\n", verifyDatabase)
+	fmt.Printf("  Target:  %s\n", verifyCompareDB)
+	fmt.Println()
+
+	result, err := checker.CompareSourceTarget(ctx, verifyDatabase, verifyCompareDB)
+	if err != nil {
+		return fmt.Errorf("comparison failed: %w", err)
+	}
+
+	if verifyJSON {
+		return outputJSON(result, "")
+	}
+
+	if result.Match {
+		fmt.Println("  ✅ Databases MATCH - restore verified successfully")
+	} else {
+		fmt.Println("  ❌ Databases DO NOT MATCH")
+		fmt.Println()
+		fmt.Println("  Differences:")
+		for _, d := range result.Differences {
+			fmt.Printf("    • %s\n", d)
+		}
+	}
+
+	fmt.Println()
+	return nil
+}
+
+func verifyMultipleDatabases(ctx context.Context, log logger.Logger) error {
+	databases := splitDatabases(verifyDatabases)
+	if len(databases) == 0 {
+		return fmt.Errorf("no databases specified")
+	}
+
+	fmt.Println()
+	fmt.Println("╔══════════════════════════════════════════════════════════════╗")
+	fmt.Println("║       🔍 PARALLEL DATABASE VERIFICATION                      ║")
+	fmt.Println("╚══════════════════════════════════════════════════════════════╝")
+	fmt.Println()
+	fmt.Printf("  Databases: %d\n", len(databases))
+	fmt.Printf("  Workers:   %d\n", verifyParallel)
+	fmt.Println()
+
+	results, err := verification.ParallelVerify(ctx, log, verifyEngine, verifyHost, verifyPort, verifyUser, verifyPassword, databases, verifyParallel)
+	if err != nil {
+		return fmt.Errorf("parallel verification failed: %w", err)
+	}
+
+	if verifyJSON {
+		return outputJSON(results, "")
+	}
+
+	allValid := true
+	for _, r := range results {
+		if r == nil {
+			continue
+		}
+		status := "✅"
+		if !r.Valid {
+			status = "❌"
+			allValid = false
+		}
+		fmt.Printf("  %s %s: %d tables, %d rows, %d BLOBs (%s)\n",
+			status, r.Database, r.TotalTables, r.TotalRows, r.TotalBlobCount, r.Duration.Round(time.Millisecond))
+	}
+
+	fmt.Println()
+	if allValid {
+		fmt.Println("  ✅ All databases verified successfully")
+	} else {
+		fmt.Println("  ❌ Some databases failed verification")
+		return fmt.Errorf("verification failed")
+	}
+
+	fmt.Println()
+	return nil
+}
+
+func verifySingleDatabase(ctx context.Context, checker *verification.LargeRestoreChecker) error {
+	fmt.Println()
+	fmt.Println("╔══════════════════════════════════════════════════════════════╗")
+	fmt.Println("║       🔍 SYSTEMATIC RESTORE VERIFICATION                     ║")
+	fmt.Println("║          For Large Databases & BLOBs                         ║")
+	fmt.Println("╚══════════════════════════════════════════════════════════════╝")
+	fmt.Println()
+	fmt.Printf("  Database: %s\n", verifyDatabase)
+	fmt.Printf("  Engine:   %s\n", verifyEngine)
+	fmt.Printf("  Host:     %s:%d\n", verifyHost, verifyPort)
+	fmt.Println()
+
+	result, err := checker.CheckDatabase(ctx, verifyDatabase)
+	if err != nil {
+		return fmt.Errorf("verification failed: %w", err)
+	}
+
+	if verifyJSON {
+		return outputJSON(result, "")
+	}
+
+	// Summary
+	fmt.Println("  ═══════════════════════════════════════════════════════════")
+	fmt.Println("  VERIFICATION SUMMARY")
+	fmt.Println("  ═══════════════════════════════════════════════════════════")
+	fmt.Println()
+	fmt.Printf("  Tables:         %d\n", result.TotalTables)
+	fmt.Printf("  Total Rows:     %d\n", result.TotalRows)
+	fmt.Printf("  Large Objects:  %d\n", result.TotalBlobCount)
+	fmt.Printf("  BLOB Size:      %s\n", formatBytes(result.TotalBlobBytes))
+	fmt.Printf("  Duration:       %s\n", result.Duration.Round(time.Millisecond))
+	fmt.Println()
+
+	// Table details
+	if len(result.TableChecks) > 0 && len(result.TableChecks) <= 50 {
+		fmt.Println("  Tables:")
+		for _, t := range result.TableChecks {
+			blobIndicator := ""
+			if t.HasBlobColumn {
+				blobIndicator = " [BLOB]"
+			}
+			status := "✓"
+			if !t.Valid {
+				status = "✗"
+			}
+			fmt.Printf("    %s %s.%s: %d rows%s\n", status, t.Schema, t.TableName, t.RowCount, blobIndicator)
+		}
+		fmt.Println()
+	}
+
+	// Integrity errors
+	if len(result.IntegrityErrors) > 0 {
+		fmt.Println("  ❌ INTEGRITY ERRORS:")
+		for _, e := range result.IntegrityErrors {
+			fmt.Printf("    • %s\n", e)
+		}
+		fmt.Println()
+	}
+
+	// Warnings
+	if len(result.Warnings) > 0 {
+		fmt.Println("  ⚠️  WARNINGS:")
+		for _, w := range result.Warnings {
+			fmt.Printf("    • %s\n", w)
+		}
+		fmt.Println()
+	}
+
+	// Final verdict
+	fmt.Println("  ═══════════════════════════════════════════════════════════")
+	if result.Valid {
+		fmt.Println("  ✅ RESTORE VERIFICATION PASSED - Data integrity confirmed")
+	} else {
+		fmt.Println("  ❌ RESTORE VERIFICATION FAILED - See errors above")
+		return fmt.Errorf("verification failed")
+	}
+	fmt.Println("  ═══════════════════════════════════════════════════════════")
+	fmt.Println()
+
+	return nil
+}
+
+func splitDatabases(s string) []string {
+	if s == "" {
+		return nil
+	}
+	var dbs []string
+	for _, db := range strings.Split(s, ",") {
+		db = strings.TrimSpace(db)
+		if db != "" {
+			dbs = append(dbs, db)
+		}
+	}
+	return dbs
+}

deploy/README.md

@@ -0,0 +1,62 @@
+# Deployment Examples for dbbackup
+
+Enterprise deployment configurations for various platforms and orchestration tools.
+
+## Directory Structure
+
+```
+deploy/
+├── README.md
+├── ansible/              # Ansible roles and playbooks
+│   ├── basic.yml         # Simple installation
+│   ├── with-exporter.yml # With Prometheus metrics
+│   ├── with-notifications.yml # With email/Slack alerts
+│   └── enterprise.yml    # Full enterprise setup
+├── kubernetes/           # Kubernetes manifests
+│   ├── cronjob.yaml      # Scheduled backup CronJob
+│   ├── configmap.yaml    # Configuration
+│   └── helm/             # Helm chart
+├── terraform/            # Infrastructure as Code
+│   ├── aws/              # AWS deployment
+│   └── gcp/              # GCP deployment
+└── scripts/              # Helper scripts
+    ├── backup-rotation.sh
+    └── health-check.sh
+```
+
+## Quick Start by Platform
+
+### Ansible
+```bash
+cd ansible
+cp inventory.example inventory
+ansible-playbook -i inventory enterprise.yml
+```
+
+### Kubernetes
+```bash
+kubectl apply -f kubernetes/
+# or with Helm
+helm install dbbackup kubernetes/helm/dbbackup
+```
+
+### Terraform (AWS)
+```bash
+cd terraform/aws
+terraform init
+terraform apply
+```
+
+## Feature Matrix
+
+| Feature | basic | with-exporter | with-notifications | enterprise |
+|---------|:-----:|:-------------:|:------------------:|:----------:|
+| Scheduled Backups | ✓ | ✓ | ✓ | ✓ |
+| Retention Policy | ✓ | ✓ | ✓ | ✓ |
+| GFS Rotation | | | | ✓ |
+| Prometheus Metrics | | ✓ | | ✓ |
+| Email Notifications | | | ✓ | ✓ |
+| Slack/Webhook | | | ✓ | ✓ |
+| Encryption | | | | ✓ |
+| Cloud Upload | | | | ✓ |
+| Catalog Sync | | | | ✓ |

deploy/ansible/README.md

@@ -0,0 +1,75 @@
+# Ansible Deployment for dbbackup
+
+Ansible roles and playbooks for deploying dbbackup in enterprise environments.
+
+## Playbooks
+
+| Playbook | Description |
+|----------|-------------|
+| `basic.yml` | Simple installation without monitoring |
+| `with-exporter.yml` | Installation with Prometheus metrics exporter |
+| `with-notifications.yml` | Installation with SMTP/webhook notifications |
+| `enterprise.yml` | Full enterprise setup (exporter + notifications + GFS retention) |
+
+## Quick Start
+
+```bash
+# Edit inventory
+cp inventory.example inventory
+vim inventory
+
+# Edit variables
+vim group_vars/all.yml
+
+# Deploy basic setup
+ansible-playbook -i inventory basic.yml
+
+# Deploy enterprise setup
+ansible-playbook -i inventory enterprise.yml
+```
+
+## Variables
+
+See `group_vars/all.yml` for all configurable options.
+
+### Required Variables
+
+| Variable | Description | Example |
+|----------|-------------|---------|
+| `dbbackup_version` | Version to install | `3.42.74` |
+| `dbbackup_db_type` | Database type | `postgres` or `mysql` |
+| `dbbackup_backup_dir` | Backup storage path | `/var/backups/databases` |
+
+### Optional Variables
+
+| Variable | Description | Default |
+|----------|-------------|---------|
+| `dbbackup_schedule` | Backup schedule | `daily` |
+| `dbbackup_compression` | Compression level | `6` |
+| `dbbackup_retention_days` | Retention period | `30` |
+| `dbbackup_min_backups` | Minimum backups to keep | `5` |
+| `dbbackup_exporter_port` | Prometheus exporter port | `9399` |
+
+## Directory Structure
+
+```
+ansible/
+├── README.md
+├── inventory.example
+├── group_vars/
+│   └── all.yml
+├── roles/
+│   └── dbbackup/
+│       ├── tasks/
+│       │   └── main.yml
+│       ├── templates/
+│       │   ├── dbbackup.conf.j2
+│       │   ├── env.j2
+│       │   └── systemd-override.conf.j2
+│       └── handlers/
+│           └── main.yml
+├── basic.yml
+├── with-exporter.yml
+├── with-notifications.yml
+└── enterprise.yml
+```

deploy/ansible/basic.yml

@@ -0,0 +1,42 @@
+---
+# dbbackup Basic Deployment
+# Simple installation without monitoring or notifications
+#
+# Usage:
+#   ansible-playbook -i inventory basic.yml
+#
+# Features:
+#   ✓ Automated daily backups
+#   ✓ Retention policy (30 days default)
+#   ✗ No Prometheus exporter
+#   ✗ No notifications
+
+- name: Deploy dbbackup (basic)
+  hosts: db_servers
+  become: yes
+  
+  vars:
+    dbbackup_exporter_enabled: false
+    dbbackup_notify_enabled: false
+  
+  roles:
+    - dbbackup
+
+  post_tasks:
+    - name: Verify installation
+      command: "{{ dbbackup_install_dir }}/dbbackup --version"
+      register: version_check
+      changed_when: false
+
+    - name: Display version
+      debug:
+        msg: "Installed: {{ version_check.stdout }}"
+
+    - name: Show timer status
+      command: systemctl status dbbackup-{{ dbbackup_backup_type }}.timer --no-pager
+      register: timer_status
+      changed_when: false
+
+    - name: Display next backup time
+      debug:
+        msg: "{{ timer_status.stdout_lines | select('search', 'Trigger') | list }}"

deploy/ansible/enterprise.yml

@@ -0,0 +1,153 @@
+---
+# dbbackup Enterprise Deployment
+# Full-featured installation with all enterprise capabilities
+#
+# Usage:
+#   ansible-playbook -i inventory enterprise.yml
+#
+# Features:
+#   ✓ Automated scheduled backups
+#   ✓ GFS retention policy (Grandfather-Father-Son)
+#   ✓ Prometheus metrics exporter
+#   ✓ SMTP email notifications
+#   ✓ Webhook/Slack notifications
+#   ✓ Encrypted backups (optional)
+#   ✓ Cloud storage upload (optional)
+#   ✓ Catalog for backup tracking
+#
+# Required Vault Variables:
+#   dbbackup_db_password
+#   dbbackup_encryption_key (if encryption enabled)
+#   dbbackup_notify_smtp_password (if SMTP enabled)
+#   dbbackup_cloud_access_key (if cloud enabled)
+#   dbbackup_cloud_secret_key (if cloud enabled)
+
+- name: Deploy dbbackup (Enterprise)
+  hosts: db_servers
+  become: yes
+  
+  vars:
+    # Full feature set
+    dbbackup_exporter_enabled: true
+    dbbackup_exporter_port: 9399
+    dbbackup_notify_enabled: true
+    
+    # GFS Retention
+    dbbackup_gfs_enabled: true
+    dbbackup_gfs_daily: 7
+    dbbackup_gfs_weekly: 4
+    dbbackup_gfs_monthly: 12
+    dbbackup_gfs_yearly: 3
+    
+  pre_tasks:
+    - name: Check for required secrets
+      assert:
+        that:
+          - dbbackup_db_password is defined
+        fail_msg: "Required secrets not provided. Use ansible-vault for dbbackup_db_password"
+
+    - name: Validate encryption key if enabled
+      assert:
+        that:
+          - dbbackup_encryption_key is defined
+          - dbbackup_encryption_key | length >= 16
+        fail_msg: "Encryption enabled but key not provided or too short"
+      when: dbbackup_encryption_enabled | default(false)
+
+  roles:
+    - dbbackup
+
+  post_tasks:
+    # Verify exporter
+    - name: Wait for exporter to start
+      wait_for:
+        port: "{{ dbbackup_exporter_port }}"
+        timeout: 30
+      when: dbbackup_exporter_enabled
+
+    - name: Test metrics endpoint
+      uri:
+        url: "http://localhost:{{ dbbackup_exporter_port }}/metrics"
+        return_content: yes
+      register: metrics_response
+      when: dbbackup_exporter_enabled
+
+    # Initialize catalog
+    - name: Sync existing backups to catalog
+      command: "{{ dbbackup_install_dir }}/dbbackup catalog sync {{ dbbackup_backup_dir }}"
+      become_user: dbbackup
+      changed_when: false
+
+    # Run preflight check
+    - name: Run preflight checks
+      command: "{{ dbbackup_install_dir }}/dbbackup preflight"
+      become_user: dbbackup
+      register: preflight_result
+      changed_when: false
+      failed_when: preflight_result.rc > 1  # rc=1 is warnings, rc=2 is failure
+
+    - name: Display preflight result
+      debug:
+        msg: "{{ preflight_result.stdout_lines }}"
+
+    # Summary
+    - name: Display deployment summary
+      debug:
+        msg: |
+          ╔══════════════════════════════════════════════════════════════╗
+          ║             dbbackup Enterprise Deployment Complete          ║
+          ╚══════════════════════════════════════════════════════════════╝
+          
+          Host: {{ inventory_hostname }}
+          Version: {{ dbbackup_version }}
+          
+          ┌─ Backup Configuration ─────────────────────────────────────────
+          │ Type: {{ dbbackup_backup_type }}
+          │ Schedule: {{ dbbackup_schedule }}
+          │ Directory: {{ dbbackup_backup_dir }}
+          │ Encryption: {{ 'Enabled' if dbbackup_encryption_enabled else 'Disabled' }}
+          └────────────────────────────────────────────────────────────────
+          
+          ┌─ Retention Policy (GFS) ───────────────────────────────────────
+          │ Daily: {{ dbbackup_gfs_daily }} backups
+          │ Weekly: {{ dbbackup_gfs_weekly }} backups
+          │ Monthly: {{ dbbackup_gfs_monthly }} backups
+          │ Yearly: {{ dbbackup_gfs_yearly }} backups
+          └────────────────────────────────────────────────────────────────
+          
+          ┌─ Monitoring ───────────────────────────────────────────────────
+          │ Prometheus: http://{{ inventory_hostname }}:{{ dbbackup_exporter_port }}/metrics
+          └────────────────────────────────────────────────────────────────
+          
+          ┌─ Notifications ────────────────────────────────────────────────
+          {% if dbbackup_notify_smtp_enabled | default(false) %}
+          │ SMTP: {{ dbbackup_notify_smtp_to | join(', ') }}
+          {% endif %}
+          {% if dbbackup_notify_slack_enabled | default(false) %}
+          │ Slack: Enabled
+          {% endif %}
+          └────────────────────────────────────────────────────────────────
+
+- name: Configure Prometheus scrape targets
+  hosts: monitoring
+  become: yes
+  tasks:
+    - name: Add dbbackup targets to prometheus
+      blockinfile:
+        path: /etc/prometheus/targets/dbbackup.yml
+        create: yes
+        block: |
+          - targets:
+          {% for host in groups['db_servers'] %}
+              - {{ host }}:{{ hostvars[host]['dbbackup_exporter_port'] | default(9399) }}
+          {% endfor %}
+            labels:
+              job: dbbackup
+      notify: reload prometheus
+      when: "'monitoring' in group_names"
+
+  handlers:
+    - name: reload prometheus
+      systemd:
+        name: prometheus
+        state: reloaded

deploy/ansible/group_vars/all.yml

@@ -0,0 +1,71 @@
+# dbbackup Ansible Variables
+# =========================
+
+# Version and Installation
+dbbackup_version: "3.42.74"
+dbbackup_download_url: "https://git.uuxo.net/UUXO/dbbackup/releases/download/v{{ dbbackup_version }}"
+dbbackup_install_dir: "/usr/local/bin"
+dbbackup_config_dir: "/etc/dbbackup"
+dbbackup_data_dir: "/var/lib/dbbackup"
+dbbackup_log_dir: "/var/log/dbbackup"
+
+# Database Configuration
+dbbackup_db_type: "postgres"  # postgres, mysql, mariadb
+dbbackup_db_host: "localhost"
+dbbackup_db_port: 5432        # 5432 for postgres, 3306 for mysql
+dbbackup_db_user: "postgres"
+# dbbackup_db_password: ""    # Use vault for passwords!
+
+# Backup Configuration
+dbbackup_backup_dir: "/var/backups/databases"
+dbbackup_backup_type: "cluster"  # cluster, single
+dbbackup_compression: 6
+dbbackup_encryption_enabled: false
+# dbbackup_encryption_key: "" # Use vault!
+
+# Schedule (systemd OnCalendar format)
+dbbackup_schedule: "daily"  # daily, weekly, *-*-* 02:00:00
+
+# Retention Policy
+dbbackup_retention_days: 30
+dbbackup_min_backups: 5
+
+# GFS Retention (enterprise.yml)
+dbbackup_gfs_enabled: false
+dbbackup_gfs_daily: 7
+dbbackup_gfs_weekly: 4
+dbbackup_gfs_monthly: 12
+dbbackup_gfs_yearly: 3
+
+# Prometheus Exporter (with-exporter.yml, enterprise.yml)
+dbbackup_exporter_enabled: false
+dbbackup_exporter_port: 9399
+
+# Cloud Storage (optional)
+dbbackup_cloud_enabled: false
+dbbackup_cloud_provider: "s3"  # s3, minio, b2, azure, gcs
+dbbackup_cloud_bucket: ""
+dbbackup_cloud_endpoint: ""    # For MinIO/B2
+# dbbackup_cloud_access_key: "" # Use vault!
+# dbbackup_cloud_secret_key: "" # Use vault!
+
+# Notifications (with-notifications.yml, enterprise.yml)
+dbbackup_notify_enabled: false
+
+# SMTP Notifications
+dbbackup_notify_smtp_enabled: false
+dbbackup_notify_smtp_host: ""
+dbbackup_notify_smtp_port: 587
+dbbackup_notify_smtp_user: ""
+# dbbackup_notify_smtp_password: "" # Use vault!
+dbbackup_notify_smtp_from: ""
+dbbackup_notify_smtp_to: []  # List of recipients
+
+# Webhook Notifications
+dbbackup_notify_webhook_enabled: false
+dbbackup_notify_webhook_url: ""
+# dbbackup_notify_webhook_secret: "" # Use vault for HMAC secret!
+
+# Slack Integration (uses webhook)
+dbbackup_notify_slack_enabled: false
+dbbackup_notify_slack_webhook: ""

deploy/ansible/inventory.example

@@ -0,0 +1,25 @@
+# dbbackup Ansible Inventory Example
+# Copy to 'inventory' and customize
+
+[db_servers]
+# PostgreSQL servers
+pg-primary.example.com   dbbackup_db_type=postgres
+pg-replica.example.com   dbbackup_db_type=postgres dbbackup_backup_from_replica=true
+
+# MySQL servers  
+mysql-01.example.com     dbbackup_db_type=mysql
+
+[db_servers:vars]
+ansible_user=deploy
+ansible_become=yes
+
+# Group-level defaults
+dbbackup_backup_dir=/var/backups/databases
+dbbackup_schedule=daily
+
+[monitoring]
+prometheus.example.com
+
+[monitoring:vars]
+# Servers where metrics are scraped
+dbbackup_exporter_enabled=true

deploy/ansible/roles/dbbackup/handlers/main.yml

@@ -0,0 +1,12 @@
+---
+# dbbackup Ansible Role - Handlers
+
+- name: reload systemd
+  systemd:
+    daemon_reload: yes
+
+- name: restart dbbackup
+  systemd:
+    name: "dbbackup-{{ dbbackup_backup_type }}.service"
+    state: restarted
+  when: ansible_service_mgr == 'systemd'

deploy/ansible/roles/dbbackup/tasks/main.yml

@@ -0,0 +1,116 @@
+---
+# dbbackup Ansible Role - Main Tasks
+
+- name: Create dbbackup group
+  group:
+    name: dbbackup
+    system: yes
+
+- name: Create dbbackup user
+  user:
+    name: dbbackup
+    group: dbbackup
+    system: yes
+    home: "{{ dbbackup_data_dir }}"
+    shell: /usr/sbin/nologin
+    create_home: no
+
+- name: Create directories
+  file:
+    path: "{{ item }}"
+    state: directory
+    owner: dbbackup
+    group: dbbackup
+    mode: "0755"
+  loop:
+    - "{{ dbbackup_config_dir }}"
+    - "{{ dbbackup_data_dir }}"
+    - "{{ dbbackup_data_dir }}/catalog"
+    - "{{ dbbackup_log_dir }}"
+    - "{{ dbbackup_backup_dir }}"
+
+- name: Create env.d directory
+  file:
+    path: "{{ dbbackup_config_dir }}/env.d"
+    state: directory
+    owner: root
+    group: dbbackup
+    mode: "0750"
+
+- name: Detect architecture
+  set_fact:
+    dbbackup_arch: "{{ 'arm64' if ansible_architecture == 'aarch64' else 'amd64' }}"
+
+- name: Download dbbackup binary
+  get_url:
+    url: "{{ dbbackup_download_url }}/dbbackup-linux-{{ dbbackup_arch }}"
+    dest: "{{ dbbackup_install_dir }}/dbbackup"
+    mode: "0755"
+    owner: root
+    group: root
+  notify: restart dbbackup
+
+- name: Deploy configuration file
+  template:
+    src: dbbackup.conf.j2
+    dest: "{{ dbbackup_config_dir }}/dbbackup.conf"
+    owner: root
+    group: dbbackup
+    mode: "0640"
+  notify: restart dbbackup
+
+- name: Deploy environment file
+  template:
+    src: env.j2
+    dest: "{{ dbbackup_config_dir }}/env.d/{{ dbbackup_backup_type }}.conf"
+    owner: root
+    group: dbbackup
+    mode: "0600"
+  notify: restart dbbackup
+
+- name: Install systemd service
+  command: >
+    {{ dbbackup_install_dir }}/dbbackup install
+    --backup-type {{ dbbackup_backup_type }}
+    --schedule "{{ dbbackup_schedule }}"
+    {% if dbbackup_exporter_enabled %}--with-metrics --metrics-port {{ dbbackup_exporter_port }}{% endif %}
+  args:
+    creates: "/etc/systemd/system/dbbackup-{{ dbbackup_backup_type }}.service"
+  notify:
+    - reload systemd
+    - restart dbbackup
+
+- name: Deploy systemd override (if customizations needed)
+  template:
+    src: systemd-override.conf.j2
+    dest: "/etc/systemd/system/dbbackup-{{ dbbackup_backup_type }}.service.d/override.conf"
+    owner: root
+    group: root
+    mode: "0644"
+  when: dbbackup_notify_enabled or dbbackup_cloud_enabled
+  notify:
+    - reload systemd
+    - restart dbbackup
+
+- name: Create systemd override directory
+  file:
+    path: "/etc/systemd/system/dbbackup-{{ dbbackup_backup_type }}.service.d"
+    state: directory
+    owner: root
+    group: root
+    mode: "0755"
+  when: dbbackup_notify_enabled or dbbackup_cloud_enabled
+
+- name: Enable and start dbbackup timer
+  systemd:
+    name: "dbbackup-{{ dbbackup_backup_type }}.timer"
+    enabled: yes
+    state: started
+    daemon_reload: yes
+
+- name: Enable dbbackup exporter service
+  systemd:
+    name: dbbackup-exporter
+    enabled: yes
+    state: started
+  when: dbbackup_exporter_enabled

deploy/ansible/roles/dbbackup/templates/dbbackup.conf.j2

@@ -0,0 +1,39 @@
+# dbbackup Configuration
+# Managed by Ansible - do not edit manually
+
+# Database
+db-type = {{ dbbackup_db_type }}
+host = {{ dbbackup_db_host }}
+port = {{ dbbackup_db_port }}
+user = {{ dbbackup_db_user }}
+
+# Backup
+backup-dir = {{ dbbackup_backup_dir }}
+compression = {{ dbbackup_compression }}
+
+# Retention
+retention-days = {{ dbbackup_retention_days }}
+min-backups = {{ dbbackup_min_backups }}
+
+{% if dbbackup_gfs_enabled %}
+# GFS Retention Policy
+gfs = true
+gfs-daily = {{ dbbackup_gfs_daily }}
+gfs-weekly = {{ dbbackup_gfs_weekly }}
+gfs-monthly = {{ dbbackup_gfs_monthly }}
+gfs-yearly = {{ dbbackup_gfs_yearly }}
+{% endif %}
+
+{% if dbbackup_encryption_enabled %}
+# Encryption
+encrypt = true
+{% endif %}
+
+{% if dbbackup_cloud_enabled %}
+# Cloud Storage
+cloud-provider = {{ dbbackup_cloud_provider }}
+cloud-bucket = {{ dbbackup_cloud_bucket }}
+{% if dbbackup_cloud_endpoint %}
+cloud-endpoint = {{ dbbackup_cloud_endpoint }}
+{% endif %}
+{% endif %}

deploy/ansible/roles/dbbackup/templates/env.j2

@@ -0,0 +1,57 @@
+# dbbackup Environment Variables
+# Managed by Ansible - do not edit manually
+# Permissions: 0600 (secrets inside)
+
+{% if dbbackup_db_password is defined %}
+# Database Password
+{% if dbbackup_db_type == 'postgres' %}
+PGPASSWORD={{ dbbackup_db_password }}
+{% else %}
+MYSQL_PWD={{ dbbackup_db_password }}
+{% endif %}
+{% endif %}
+
+{% if dbbackup_encryption_enabled and dbbackup_encryption_key is defined %}
+# Encryption Key
+DBBACKUP_ENCRYPTION_KEY={{ dbbackup_encryption_key }}
+{% endif %}
+
+{% if dbbackup_cloud_enabled %}
+# Cloud Storage Credentials
+{% if dbbackup_cloud_provider in ['s3', 'minio', 'b2'] %}
+AWS_ACCESS_KEY_ID={{ dbbackup_cloud_access_key | default('') }}
+AWS_SECRET_ACCESS_KEY={{ dbbackup_cloud_secret_key | default('') }}
+{% endif %}
+{% if dbbackup_cloud_provider == 'azure' %}
+AZURE_STORAGE_ACCOUNT={{ dbbackup_cloud_access_key | default('') }}
+AZURE_STORAGE_KEY={{ dbbackup_cloud_secret_key | default('') }}
+{% endif %}
+{% if dbbackup_cloud_provider == 'gcs' %}
+GOOGLE_APPLICATION_CREDENTIALS={{ dbbackup_cloud_credentials_file | default('/etc/dbbackup/gcs-credentials.json') }}
+{% endif %}
+{% endif %}
+
+{% if dbbackup_notify_smtp_enabled %}
+# SMTP Notifications
+NOTIFY_SMTP_HOST={{ dbbackup_notify_smtp_host }}
+NOTIFY_SMTP_PORT={{ dbbackup_notify_smtp_port }}
+NOTIFY_SMTP_USER={{ dbbackup_notify_smtp_user }}
+{% if dbbackup_notify_smtp_password is defined %}
+NOTIFY_SMTP_PASSWORD={{ dbbackup_notify_smtp_password }}
+{% endif %}
+NOTIFY_SMTP_FROM={{ dbbackup_notify_smtp_from }}
+NOTIFY_SMTP_TO={{ dbbackup_notify_smtp_to | join(',') }}
+{% endif %}
+
+{% if dbbackup_notify_webhook_enabled %}
+# Webhook Notifications
+NOTIFY_WEBHOOK_URL={{ dbbackup_notify_webhook_url }}
+{% if dbbackup_notify_webhook_secret is defined %}
+NOTIFY_WEBHOOK_SECRET={{ dbbackup_notify_webhook_secret }}
+{% endif %}
+{% endif %}
+
+{% if dbbackup_notify_slack_enabled %}
+# Slack Notifications
+NOTIFY_WEBHOOK_URL={{ dbbackup_notify_slack_webhook }}
+{% endif %}

deploy/ansible/roles/dbbackup/templates/systemd-override.conf.j2

@@ -0,0 +1,6 @@
+# dbbackup Systemd Override
+# Managed by Ansible
+
+[Service]
+# Load environment from secure file
+EnvironmentFile=-{{ dbbackup_config_dir }}/env.d/{{ dbbackup_backup_type }}.conf

deploy/ansible/with-exporter.yml

@@ -0,0 +1,52 @@
+---
+# dbbackup with Prometheus Exporter
+# Installation with metrics endpoint for monitoring
+#
+# Usage:
+#   ansible-playbook -i inventory with-exporter.yml
+#
+# Features:
+#   ✓ Automated daily backups
+#   ✓ Retention policy
+#   ✓ Prometheus exporter on port 9399
+#   ✗ No notifications
+
+- name: Deploy dbbackup with Prometheus exporter
+  hosts: db_servers
+  become: yes
+  
+  vars:
+    dbbackup_exporter_enabled: true
+    dbbackup_exporter_port: 9399
+    dbbackup_notify_enabled: false
+  
+  roles:
+    - dbbackup
+
+  post_tasks:
+    - name: Wait for exporter to start
+      wait_for:
+        port: "{{ dbbackup_exporter_port }}"
+        timeout: 30
+
+    - name: Test metrics endpoint
+      uri:
+        url: "http://localhost:{{ dbbackup_exporter_port }}/metrics"
+        return_content: yes
+      register: metrics_response
+
+    - name: Verify metrics available
+      assert:
+        that:
+          - "'dbbackup_' in metrics_response.content"
+        fail_msg: "Metrics endpoint not returning dbbackup metrics"
+        success_msg: "Prometheus exporter running on port {{ dbbackup_exporter_port }}"
+
+    - name: Display Prometheus scrape config
+      debug:
+        msg: |
+          Add to prometheus.yml:
+          
+          - job_name: 'dbbackup'
+            static_configs:
+              - targets: ['{{ inventory_hostname }}:{{ dbbackup_exporter_port }}']

deploy/ansible/with-notifications.yml

@@ -0,0 +1,84 @@
+---
+# dbbackup with Notifications
+# Installation with SMTP email and/or webhook notifications
+#
+# Usage:
+#   # With SMTP notifications
+#   ansible-playbook -i inventory with-notifications.yml \
+#     -e dbbackup_notify_smtp_enabled=true \
+#     -e dbbackup_notify_smtp_host=smtp.example.com \
+#     -e dbbackup_notify_smtp_from=backups@example.com \
+#     -e '{"dbbackup_notify_smtp_to": ["admin@example.com", "dba@example.com"]}'
+#
+#   # With Slack notifications
+#   ansible-playbook -i inventory with-notifications.yml \
+#     -e dbbackup_notify_slack_enabled=true \
+#     -e dbbackup_notify_slack_webhook=https://hooks.slack.com/services/XXX
+#
+# Features:
+#   ✓ Automated daily backups
+#   ✓ Retention policy
+#   ✗ No Prometheus exporter
+#   ✓ Email notifications (optional)
+#   ✓ Webhook/Slack notifications (optional)
+
+- name: Deploy dbbackup with notifications
+  hosts: db_servers
+  become: yes
+  
+  vars:
+    dbbackup_exporter_enabled: false
+    dbbackup_notify_enabled: true
+    # Enable one or more notification methods:
+    # dbbackup_notify_smtp_enabled: true
+    # dbbackup_notify_webhook_enabled: true
+    # dbbackup_notify_slack_enabled: true
+  
+  pre_tasks:
+    - name: Validate notification configuration
+      assert:
+        that:
+          - dbbackup_notify_smtp_enabled or dbbackup_notify_webhook_enabled or dbbackup_notify_slack_enabled
+        fail_msg: "At least one notification method must be enabled"
+        success_msg: "Notification configuration valid"
+
+    - name: Validate SMTP configuration
+      assert:
+        that:
+          - dbbackup_notify_smtp_host != ''
+          - dbbackup_notify_smtp_from != ''
+          - dbbackup_notify_smtp_to | length > 0
+        fail_msg: "SMTP configuration incomplete"
+      when: dbbackup_notify_smtp_enabled | default(false)
+
+    - name: Validate webhook configuration
+      assert:
+        that:
+          - dbbackup_notify_webhook_url != ''
+        fail_msg: "Webhook URL required"
+      when: dbbackup_notify_webhook_enabled | default(false)
+
+    - name: Validate Slack configuration
+      assert:
+        that:
+          - dbbackup_notify_slack_webhook != ''
+        fail_msg: "Slack webhook URL required"
+      when: dbbackup_notify_slack_enabled | default(false)
+
+  roles:
+    - dbbackup
+
+  post_tasks:
+    - name: Display notification configuration
+      debug:
+        msg: |
+          Notifications configured:
+          {% if dbbackup_notify_smtp_enabled | default(false) %}
+          - SMTP: {{ dbbackup_notify_smtp_to | join(', ') }}
+          {% endif %}
+          {% if dbbackup_notify_webhook_enabled | default(false) %}
+          - Webhook: {{ dbbackup_notify_webhook_url }}
+          {% endif %}
+          {% if dbbackup_notify_slack_enabled | default(false) %}
+          - Slack: Enabled
+          {% endif %}

deploy/kubernetes/README.md

@@ -0,0 +1,48 @@
+# dbbackup Kubernetes Deployment
+
+Kubernetes manifests for running dbbackup as scheduled CronJobs.
+
+## Quick Start
+
+```bash
+# Create namespace
+kubectl create namespace dbbackup
+
+# Create secrets
+kubectl create secret generic dbbackup-db-credentials \
+  --namespace dbbackup \
+  --from-literal=password=your-db-password
+
+# Apply manifests
+kubectl apply -f . --namespace dbbackup
+
+# Check CronJob
+kubectl get cronjobs -n dbbackup
+```
+
+## Components
+
+- `configmap.yaml` - Configuration settings
+- `secret.yaml` - Credentials template (use kubectl create secret instead)
+- `cronjob.yaml` - Scheduled backup job
+- `pvc.yaml` - Persistent volume for backup storage
+- `servicemonitor.yaml` - Prometheus ServiceMonitor (optional)
+
+## Customization
+
+Edit `configmap.yaml` to configure:
+- Database connection
+- Backup schedule
+- Retention policy
+- Cloud storage
+
+## Helm Chart
+
+For more complex deployments, use the Helm chart:
+
+```bash
+helm install dbbackup ./helm/dbbackup \
+  --set database.host=postgres.default.svc \
+  --set database.password=secret \
+  --set schedule="0 2 * * *"
+```

deploy/kubernetes/configmap.yaml

@@ -0,0 +1,27 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: dbbackup-config
+  labels:
+    app: dbbackup
+data:
+  # Database Configuration
+  DB_TYPE: "postgres"
+  DB_HOST: "postgres.default.svc.cluster.local"
+  DB_PORT: "5432"
+  DB_USER: "postgres"
+  
+  # Backup Configuration
+  BACKUP_DIR: "/backups"
+  COMPRESSION: "6"
+  
+  # Retention
+  RETENTION_DAYS: "30"
+  MIN_BACKUPS: "5"
+  
+  # GFS Retention (enterprise)
+  GFS_ENABLED: "false"
+  GFS_DAILY: "7"
+  GFS_WEEKLY: "4"
+  GFS_MONTHLY: "12"
+  GFS_YEARLY: "3"

deploy/kubernetes/cronjob.yaml

@@ -0,0 +1,140 @@
+apiVersion: batch/v1
+kind: CronJob
+metadata:
+  name: dbbackup-cluster
+  labels:
+    app: dbbackup
+    component: backup
+spec:
+  # Daily at 2:00 AM UTC
+  schedule: "0 2 * * *"
+  
+  # Keep last 3 successful and 1 failed job
+  successfulJobsHistoryLimit: 3
+  failedJobsHistoryLimit: 1
+  
+  # Don't run if previous job is still running
+  concurrencyPolicy: Forbid
+  
+  # Start job within 5 minutes of scheduled time or skip
+  startingDeadlineSeconds: 300
+  
+  jobTemplate:
+    spec:
+      # Retry up to 2 times on failure
+      backoffLimit: 2
+      
+      template:
+        metadata:
+          labels:
+            app: dbbackup
+            component: backup
+        spec:
+          restartPolicy: OnFailure
+          
+          # Security context
+          securityContext:
+            runAsNonRoot: true
+            runAsUser: 1000
+            fsGroup: 1000
+          
+          containers:
+          - name: dbbackup
+            image: git.uuxo.net/uuxo/dbbackup:latest
+            imagePullPolicy: IfNotPresent
+            
+            args:
+              - backup
+              - cluster
+              - --compression
+              - "$(COMPRESSION)"
+            
+            envFrom:
+              - configMapRef:
+                  name: dbbackup-config
+              - secretRef:
+                  name: dbbackup-secrets
+            
+            env:
+              - name: BACKUP_DIR
+                value: /backups
+            
+            volumeMounts:
+              - name: backup-storage
+                mountPath: /backups
+            
+            resources:
+              requests:
+                memory: "256Mi"
+                cpu: "100m"
+              limits:
+                memory: "2Gi"
+                cpu: "2000m"
+          
+          volumes:
+            - name: backup-storage
+              persistentVolumeClaim:
+                claimName: dbbackup-storage
+
+---
+# Cleanup CronJob - runs weekly
+apiVersion: batch/v1
+kind: CronJob
+metadata:
+  name: dbbackup-cleanup
+  labels:
+    app: dbbackup
+    component: cleanup
+spec:
+  # Weekly on Sunday at 3:00 AM UTC
+  schedule: "0 3 * * 0"
+  successfulJobsHistoryLimit: 1
+  failedJobsHistoryLimit: 1
+  concurrencyPolicy: Forbid
+  
+  jobTemplate:
+    spec:
+      template:
+        metadata:
+          labels:
+            app: dbbackup
+            component: cleanup
+        spec:
+          restartPolicy: OnFailure
+          securityContext:
+            runAsNonRoot: true
+            runAsUser: 1000
+            fsGroup: 1000
+          
+          containers:
+          - name: dbbackup
+            image: git.uuxo.net/uuxo/dbbackup:latest
+            
+            args:
+              - cleanup
+              - /backups
+              - --retention-days
+              - "$(RETENTION_DAYS)"
+              - --min-backups
+              - "$(MIN_BACKUPS)"
+            
+            envFrom:
+              - configMapRef:
+                  name: dbbackup-config
+            
+            volumeMounts:
+              - name: backup-storage
+                mountPath: /backups
+            
+            resources:
+              requests:
+                memory: "128Mi"
+                cpu: "50m"
+              limits:
+                memory: "512Mi"
+                cpu: "500m"
+          
+          volumes:
+            - name: backup-storage
+              persistentVolumeClaim:
+                claimName: dbbackup-storage

deploy/kubernetes/pvc.yaml

@@ -0,0 +1,13 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: dbbackup-storage
+  labels:
+    app: dbbackup
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 100Gi  # Adjust based on database size
+  # storageClassName: fast-ssd  # Uncomment for specific storage class

deploy/kubernetes/secret.yaml.example

@@ -0,0 +1,27 @@
+# dbbackup Secrets Template
+# DO NOT commit this file with real credentials!
+# Use: kubectl create secret generic dbbackup-secrets --from-literal=...
+
+apiVersion: v1
+kind: Secret
+metadata:
+  name: dbbackup-secrets
+  labels:
+    app: dbbackup
+type: Opaque
+stringData:
+  # Database Password (required)
+  PGPASSWORD: "CHANGE_ME"
+  
+  # Encryption Key (optional - 32+ characters recommended)
+  # DBBACKUP_ENCRYPTION_KEY: "your-encryption-key-here"
+  
+  # Cloud Storage Credentials (optional)
+  # AWS_ACCESS_KEY_ID: "AKIAXXXXXXXX"
+  # AWS_SECRET_ACCESS_KEY: "your-secret-key"
+  
+  # SMTP Notifications (optional)
+  # NOTIFY_SMTP_PASSWORD: "smtp-password"
+  
+  # Webhook Secret (optional)
+  # NOTIFY_WEBHOOK_SECRET: "hmac-signing-secret"

deploy/kubernetes/servicemonitor.yaml

@@ -0,0 +1,114 @@
+# Prometheus ServiceMonitor for dbbackup
+# Requires prometheus-operator
+
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: dbbackup
+  labels:
+    app: dbbackup
+    release: prometheus  # Match your Prometheus operator release
+spec:
+  selector:
+    matchLabels:
+      app: dbbackup
+      component: exporter
+  endpoints:
+    - port: metrics
+      interval: 60s
+      path: /metrics
+  namespaceSelector:
+    matchNames:
+      - dbbackup
+
+---
+# Metrics exporter deployment (optional - for continuous metrics)
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: dbbackup-exporter
+  labels:
+    app: dbbackup
+    component: exporter
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: dbbackup
+      component: exporter
+  template:
+    metadata:
+      labels:
+        app: dbbackup
+        component: exporter
+    spec:
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 1000
+      
+      containers:
+      - name: exporter
+        image: git.uuxo.net/uuxo/dbbackup:latest
+        args:
+          - metrics
+          - serve
+          - --port
+          - "9399"
+        
+        ports:
+          - name: metrics
+            containerPort: 9399
+            protocol: TCP
+        
+        envFrom:
+          - configMapRef:
+              name: dbbackup-config
+        
+        volumeMounts:
+          - name: backup-storage
+            mountPath: /backups
+            readOnly: true
+        
+        livenessProbe:
+          httpGet:
+            path: /health
+            port: metrics
+          initialDelaySeconds: 10
+          periodSeconds: 30
+        
+        readinessProbe:
+          httpGet:
+            path: /health
+            port: metrics
+          initialDelaySeconds: 5
+          periodSeconds: 10
+        
+        resources:
+          requests:
+            memory: "64Mi"
+            cpu: "10m"
+          limits:
+            memory: "128Mi"
+            cpu: "100m"
+      
+      volumes:
+        - name: backup-storage
+          persistentVolumeClaim:
+            claimName: dbbackup-storage
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: dbbackup-exporter
+  labels:
+    app: dbbackup
+    component: exporter
+spec:
+  ports:
+    - name: metrics
+      port: 9399
+      targetPort: metrics
+  selector:
+    app: dbbackup
+    component: exporter

deploy/prometheus/alerting-rules.yaml

@@ -0,0 +1,121 @@
+# Prometheus Alerting Rules for dbbackup
+# Import into your Prometheus/Alertmanager configuration
+
+groups:
+  - name: dbbackup
+    rules:
+      # RPO Alerts - Recovery Point Objective violations
+      - alert: DBBackupRPOWarning
+        expr: dbbackup_rpo_seconds > 43200  # 12 hours
+        for: 5m
+        labels:
+          severity: warning
+        annotations:
+          summary: "Database backup RPO warning on {{ $labels.server }}"
+          description: "No successful backup for {{ $labels.database }} in {{ $value | humanizeDuration }}. RPO threshold: 12 hours."
+
+      - alert: DBBackupRPOCritical
+        expr: dbbackup_rpo_seconds > 86400  # 24 hours
+        for: 5m
+        labels:
+          severity: critical
+        annotations:
+          summary: "Database backup RPO critical on {{ $labels.server }}"
+          description: "No successful backup for {{ $labels.database }} in {{ $value | humanizeDuration }}. Immediate attention required!"
+          runbook_url: "https://wiki.example.com/runbooks/dbbackup-rpo-violation"
+
+      # Backup Failure Alerts
+      - alert: DBBackupFailed
+        expr: increase(dbbackup_backup_total{status="failure"}[1h]) > 0
+        for: 1m
+        labels:
+          severity: critical
+        annotations:
+          summary: "Database backup failed on {{ $labels.server }}"
+          description: "Backup for {{ $labels.database }} failed. Check logs for details."
+
+      - alert: DBBackupFailureRateHigh
+        expr: |
+          rate(dbbackup_backup_total{status="failure"}[24h]) 
+          / 
+          rate(dbbackup_backup_total[24h]) > 0.1
+        for: 1h
+        labels:
+          severity: warning
+        annotations:
+          summary: "High backup failure rate on {{ $labels.server }}"
+          description: "More than 10% of backups are failing over the last 24 hours."
+
+      # Backup Size Anomalies
+      - alert: DBBackupSizeAnomaly
+        expr: |
+          abs(
+            dbbackup_last_backup_size_bytes 
+            - avg_over_time(dbbackup_last_backup_size_bytes[7d])
+          ) 
+          / avg_over_time(dbbackup_last_backup_size_bytes[7d]) > 0.5
+        for: 5m
+        labels:
+          severity: warning
+        annotations:
+          summary: "Backup size anomaly for {{ $labels.database }}"
+          description: "Backup size changed by more than 50% compared to 7-day average. Current: {{ $value | humanize1024 }}B"
+
+      - alert: DBBackupSizeZero
+        expr: dbbackup_last_backup_size_bytes == 0
+        for: 5m
+        labels:
+          severity: critical
+        annotations:
+          summary: "Zero-size backup detected for {{ $labels.database }}"
+          description: "Last backup file is empty. Backup likely failed silently."
+
+      # Duration Alerts
+      - alert: DBBackupDurationHigh
+        expr: dbbackup_last_backup_duration_seconds > 3600  # 1 hour
+        for: 5m
+        labels:
+          severity: warning
+        annotations:
+          summary: "Backup taking too long for {{ $labels.database }}"
+          description: "Last backup took {{ $value | humanizeDuration }}. Consider optimizing backup strategy."
+
+      # Verification Alerts
+      - alert: DBBackupNotVerified
+        expr: dbbackup_backup_verified == 0
+        for: 24h
+        labels:
+          severity: warning
+        annotations:
+          summary: "Backup not verified for {{ $labels.database }}"
+          description: "Last backup was not verified. Run dbbackup verify to check integrity."
+
+      # Exporter Health
+      - alert: DBBackupExporterDown
+        expr: up{job="dbbackup"} == 0
+        for: 5m
+        labels:
+          severity: critical
+        annotations:
+          summary: "dbbackup exporter is down on {{ $labels.instance }}"
+          description: "Cannot scrape metrics from dbbackup exporter. Monitoring is impaired."
+
+      # Deduplication Alerts
+      - alert: DBBackupDedupRatioLow
+        expr: dbbackup_dedup_ratio < 0.2
+        for: 24h
+        labels:
+          severity: info
+        annotations:
+          summary: "Low deduplication ratio on {{ $labels.server }}"
+          description: "Dedup ratio is {{ $value | printf \"%.1f%%\" }}. Consider if dedup is beneficial."
+
+      # Storage Alerts
+      - alert: DBBackupStorageHigh
+        expr: dbbackup_dedup_disk_usage_bytes > 1099511627776  # 1 TB
+        for: 1h
+        labels:
+          severity: warning
+        annotations:
+          summary: "High backup storage usage on {{ $labels.server }}"
+          description: "Backup storage using {{ $value | humanize1024 }}B. Review retention policy."

deploy/prometheus/scrape-config.yaml

@@ -0,0 +1,48 @@
+# Prometheus scrape configuration for dbbackup
+# Add to your prometheus.yml
+
+scrape_configs:
+  - job_name: 'dbbackup'
+    # Scrape interval - backup metrics don't change frequently
+    scrape_interval: 60s
+    scrape_timeout: 10s
+    
+    # Static targets - list your database servers
+    static_configs:
+      - targets:
+          - 'db-server-01:9399'
+          - 'db-server-02:9399'
+          - 'db-server-03:9399'
+        labels:
+          environment: 'production'
+      
+      - targets:
+          - 'db-staging:9399'
+        labels:
+          environment: 'staging'
+    
+    # Relabeling (optional)
+    relabel_configs:
+      # Extract hostname from target
+      - source_labels: [__address__]
+        target_label: instance
+        regex: '([^:]+):\d+'
+        replacement: '$1'
+
+# Alternative: File-based service discovery
+# Useful when targets are managed by Ansible/Terraform
+
+  - job_name: 'dbbackup-sd'
+    scrape_interval: 60s
+    file_sd_configs:
+      - files:
+          - '/etc/prometheus/targets/dbbackup/*.yml'
+        refresh_interval: 5m
+
+# Example target file (/etc/prometheus/targets/dbbackup/production.yml):
+# - targets:
+#     - db-server-01:9399
+#     - db-server-02:9399
+#   labels:
+#     environment: production
+#     datacenter: us-east-1

deploy/scripts/backup-rotation.sh

@@ -0,0 +1,65 @@
+#!/bin/bash
+# Backup Rotation Script for dbbackup
+# Implements GFS (Grandfather-Father-Son) retention policy
+#
+# Usage: backup-rotation.sh /path/to/backups [--dry-run]
+
+set -euo pipefail
+
+BACKUP_DIR="${1:-/var/backups/databases}"
+DRY_RUN="${2:-}"
+
+# GFS Configuration
+DAILY_KEEP=7
+WEEKLY_KEEP=4
+MONTHLY_KEEP=12
+YEARLY_KEEP=3
+
+# Minimum backups to always keep
+MIN_BACKUPS=5
+
+echo "═══════════════════════════════════════════════════════════════"
+echo "  dbbackup GFS Rotation"
+echo "═══════════════════════════════════════════════════════════════"
+echo ""
+echo "  Backup Directory: $BACKUP_DIR"
+echo "  Retention Policy:"
+echo "    Daily:   $DAILY_KEEP backups"
+echo "    Weekly:  $WEEKLY_KEEP backups"  
+echo "    Monthly: $MONTHLY_KEEP backups"
+echo "    Yearly:  $YEARLY_KEEP backups"
+echo ""
+
+if [[ "$DRY_RUN" == "--dry-run" ]]; then
+    echo "  [DRY RUN MODE - No files will be deleted]"
+    echo ""
+fi
+
+# Check if dbbackup is available
+if ! command -v dbbackup &> /dev/null; then
+    echo "ERROR: dbbackup command not found"
+    exit 1
+fi
+
+# Build cleanup command
+CLEANUP_CMD="dbbackup cleanup $BACKUP_DIR \
+    --gfs \
+    --gfs-daily $DAILY_KEEP \
+    --gfs-weekly $WEEKLY_KEEP \
+    --gfs-monthly $MONTHLY_KEEP \
+    --gfs-yearly $YEARLY_KEEP \
+    --min-backups $MIN_BACKUPS"
+
+if [[ "$DRY_RUN" == "--dry-run" ]]; then
+    CLEANUP_CMD="$CLEANUP_CMD --dry-run"
+fi
+
+echo "Running: $CLEANUP_CMD"
+echo ""
+
+$CLEANUP_CMD
+
+echo ""
+echo "═══════════════════════════════════════════════════════════════"
+echo "  Rotation complete"
+echo "═══════════════════════════════════════════════════════════════"

deploy/scripts/health-check.sh

@@ -0,0 +1,92 @@
+#!/bin/bash
+# Health Check Script for dbbackup
+# Returns exit codes for monitoring systems:
+#   0 = OK (backup within RPO)
+#   1 = WARNING (backup older than warning threshold)
+#   2 = CRITICAL (backup older than critical threshold or missing)
+#
+# Usage: health-check.sh [backup-dir] [warning-hours] [critical-hours]
+
+set -euo pipefail
+
+BACKUP_DIR="${1:-/var/backups/databases}"
+WARNING_HOURS="${2:-24}"
+CRITICAL_HOURS="${3:-48}"
+
+# Convert to seconds
+WARNING_SECONDS=$((WARNING_HOURS * 3600))
+CRITICAL_SECONDS=$((CRITICAL_HOURS * 3600))
+
+echo "dbbackup Health Check"
+echo "====================="
+echo "Backup directory: $BACKUP_DIR"
+echo "Warning threshold: ${WARNING_HOURS}h"
+echo "Critical threshold: ${CRITICAL_HOURS}h"
+echo ""
+
+# Check if backup directory exists
+if [[ ! -d "$BACKUP_DIR" ]]; then
+    echo "CRITICAL: Backup directory does not exist"
+    exit 2
+fi
+
+# Find most recent backup file
+LATEST_BACKUP=$(find "$BACKUP_DIR" -type f \( -name "*.dump" -o -name "*.dump.gz" -o -name "*.sql" -o -name "*.sql.gz" -o -name "*.tar.gz" \) -printf '%T@ %p\n' 2>/dev/null | sort -rn | head -1)
+
+if [[ -z "$LATEST_BACKUP" ]]; then
+    echo "CRITICAL: No backup files found in $BACKUP_DIR"
+    exit 2
+fi
+
+# Extract timestamp and path
+BACKUP_TIMESTAMP=$(echo "$LATEST_BACKUP" | cut -d' ' -f1 | cut -d'.' -f1)
+BACKUP_PATH=$(echo "$LATEST_BACKUP" | cut -d' ' -f2-)
+BACKUP_NAME=$(basename "$BACKUP_PATH")
+
+# Calculate age
+NOW=$(date +%s)
+AGE_SECONDS=$((NOW - BACKUP_TIMESTAMP))
+AGE_HOURS=$((AGE_SECONDS / 3600))
+AGE_DAYS=$((AGE_HOURS / 24))
+
+# Format age string
+if [[ $AGE_DAYS -gt 0 ]]; then
+    AGE_STR="${AGE_DAYS}d $((AGE_HOURS % 24))h"
+else
+    AGE_STR="${AGE_HOURS}h $((AGE_SECONDS % 3600 / 60))m"
+fi
+
+# Get backup size
+BACKUP_SIZE=$(du -h "$BACKUP_PATH" 2>/dev/null | cut -f1)
+
+echo "Latest backup:"
+echo "  File: $BACKUP_NAME"
+echo "  Size: $BACKUP_SIZE"
+echo "  Age:  $AGE_STR"
+echo ""
+
+# Verify backup integrity if dbbackup is available
+if command -v dbbackup &> /dev/null; then
+    echo "Verifying backup integrity..."
+    if dbbackup verify "$BACKUP_PATH" --quiet 2>/dev/null; then
+        echo "  ✓ Backup integrity verified"
+    else
+        echo "  ✗ Backup verification failed"
+        echo ""
+        echo "CRITICAL: Latest backup is corrupted"
+        exit 2
+    fi
+    echo ""
+fi
+
+# Check thresholds
+if [[ $AGE_SECONDS -ge $CRITICAL_SECONDS ]]; then
+    echo "CRITICAL: Last backup is ${AGE_STR} old (threshold: ${CRITICAL_HOURS}h)"
+    exit 2
+elif [[ $AGE_SECONDS -ge $WARNING_SECONDS ]]; then
+    echo "WARNING: Last backup is ${AGE_STR} old (threshold: ${WARNING_HOURS}h)"
+    exit 1
+else
+    echo "OK: Last backup is ${AGE_STR} old"
+    exit 0
+fi

deploy/terraform/aws/example.tf

@@ -0,0 +1,26 @@
+# dbbackup Terraform - AWS Example
+
+variable "aws_region" {
+  default = "us-east-1"
+}
+
+provider "aws" {
+  region = var.aws_region
+}
+
+module "dbbackup_storage" {
+  source = "./main.tf"
+  
+  environment    = "production"
+  bucket_name    = "mycompany-database-backups"
+  retention_days = 30
+  glacier_days   = 365
+}
+
+output "bucket_name" {
+  value = module.dbbackup_storage.bucket_name
+}
+
+output "setup_instructions" {
+  value = module.dbbackup_storage.dbbackup_cloud_config
+}

deploy/terraform/aws/main.tf

@@ -0,0 +1,202 @@
+# dbbackup Terraform Module - AWS Deployment
+# Creates S3 bucket for backup storage with proper security
+
+terraform {
+  required_version = ">= 1.0"
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = ">= 4.0"
+    }
+  }
+}
+
+# Variables
+variable "environment" {
+  description = "Environment name (e.g., production, staging)"
+  type        = string
+  default     = "production"
+}
+
+variable "bucket_name" {
+  description = "S3 bucket name for backups"
+  type        = string
+}
+
+variable "retention_days" {
+  description = "Days to keep backups before transitioning to Glacier"
+  type        = number
+  default     = 30
+}
+
+variable "glacier_days" {
+  description = "Days to keep in Glacier before deletion (0 = keep forever)"
+  type        = number
+  default     = 365
+}
+
+variable "enable_encryption" {
+  description = "Enable server-side encryption"
+  type        = bool
+  default     = true
+}
+
+variable "kms_key_arn" {
+  description = "KMS key ARN for encryption (leave empty for aws/s3 managed key)"
+  type        = string
+  default     = ""
+}
+
+# S3 Bucket
+resource "aws_s3_bucket" "backups" {
+  bucket = var.bucket_name
+  
+  tags = {
+    Name        = "Database Backups"
+    Environment = var.environment
+    ManagedBy   = "terraform"
+    Application = "dbbackup"
+  }
+}
+
+# Versioning
+resource "aws_s3_bucket_versioning" "backups" {
+  bucket = aws_s3_bucket.backups.id
+  versioning_configuration {
+    status = "Enabled"
+  }
+}
+
+# Encryption
+resource "aws_s3_bucket_server_side_encryption_configuration" "backups" {
+  count  = var.enable_encryption ? 1 : 0
+  bucket = aws_s3_bucket.backups.id
+
+  rule {
+    apply_server_side_encryption_by_default {
+      sse_algorithm     = var.kms_key_arn != "" ? "aws:kms" : "AES256"
+      kms_master_key_id = var.kms_key_arn != "" ? var.kms_key_arn : null
+    }
+    bucket_key_enabled = true
+  }
+}
+
+# Lifecycle Rules
+resource "aws_s3_bucket_lifecycle_configuration" "backups" {
+  bucket = aws_s3_bucket.backups.id
+
+  rule {
+    id     = "transition-to-glacier"
+    status = "Enabled"
+
+    filter {
+      prefix = ""
+    }
+
+    transition {
+      days          = var.retention_days
+      storage_class = "GLACIER"
+    }
+
+    dynamic "expiration" {
+      for_each = var.glacier_days > 0 ? [1] : []
+      content {
+        days = var.retention_days + var.glacier_days
+      }
+    }
+
+    noncurrent_version_transition {
+      noncurrent_days = 30
+      storage_class   = "GLACIER"
+    }
+
+    noncurrent_version_expiration {
+      noncurrent_days = 90
+    }
+  }
+}
+
+# Block Public Access
+resource "aws_s3_bucket_public_access_block" "backups" {
+  bucket = aws_s3_bucket.backups.id
+
+  block_public_acls       = true
+  block_public_policy     = true
+  ignore_public_acls      = true
+  restrict_public_buckets = true
+}
+
+# IAM User for dbbackup
+resource "aws_iam_user" "dbbackup" {
+  name = "dbbackup-${var.environment}"
+  path = "/service-accounts/"
+  
+  tags = {
+    Application = "dbbackup"
+    Environment = var.environment
+  }
+}
+
+resource "aws_iam_access_key" "dbbackup" {
+  user = aws_iam_user.dbbackup.name
+}
+
+# IAM Policy
+resource "aws_iam_user_policy" "dbbackup" {
+  name = "dbbackup-s3-access"
+  user = aws_iam_user.dbbackup.name
+
+  policy = jsonencode({
+    Version = "2012-10-17"
+    Statement = [
+      {
+        Effect = "Allow"
+        Action = [
+          "s3:GetObject",
+          "s3:PutObject",
+          "s3:DeleteObject",
+          "s3:ListBucket",
+          "s3:GetBucketLocation"
+        ]
+        Resource = [
+          aws_s3_bucket.backups.arn,
+          "${aws_s3_bucket.backups.arn}/*"
+        ]
+      }
+    ]
+  })
+}
+
+# Outputs
+output "bucket_name" {
+  description = "S3 bucket name"
+  value       = aws_s3_bucket.backups.id
+}
+
+output "bucket_arn" {
+  description = "S3 bucket ARN"
+  value       = aws_s3_bucket.backups.arn
+}
+
+output "access_key_id" {
+  description = "IAM access key ID for dbbackup"
+  value       = aws_iam_access_key.dbbackup.id
+}
+
+output "secret_access_key" {
+  description = "IAM secret access key for dbbackup"
+  value       = aws_iam_access_key.dbbackup.secret
+  sensitive   = true
+}
+
+output "dbbackup_cloud_config" {
+  description = "Cloud configuration for dbbackup"
+  value       = <<-EOT
+    # Add to dbbackup environment:
+    export AWS_ACCESS_KEY_ID="${aws_iam_access_key.dbbackup.id}"
+    export AWS_SECRET_ACCESS_KEY="<run: terraform output -raw secret_access_key>"
+    
+    # Use with dbbackup:
+    dbbackup backup cluster --cloud s3://${aws_s3_bucket.backups.id}/backups/
+  EOT
+}

docs/AZURE.md

@@ -236,8 +236,8 @@ dbbackup cloud download \
 # Manual delete
 dbbackup cloud delete "azure://prod-backups/postgres/old_backup.sql?account=myaccount&key=KEY"
 
-# Automatic cleanup (keep last 7 backups)
-dbbackup cleanup "azure://prod-backups/postgres/?account=myaccount&key=KEY" --keep 7
+# Automatic cleanup (keep last 7 days, min 5 backups)
+dbbackup cleanup "azure://prod-backups/postgres/?account=myaccount&key=KEY" --retention-days 7 --min-backups 5
 ```
 
 ### Scheduled Backups
@@ -253,7 +253,7 @@ dbbackup backup single production_db \
   --compression 9
 
 # Cleanup old backups
-dbbackup cleanup "azure://prod-backups/postgres/?account=myaccount&key=${AZURE_STORAGE_KEY}" --keep 30
+dbbackup cleanup "azure://prod-backups/postgres/?account=myaccount&key=${AZURE_STORAGE_KEY}" --retention-days 30 --min-backups 5
 ```
 
 **Crontab:**
@@ -385,7 +385,7 @@ Tests include:
 ### 4. Reliability
 
 - Test **restore procedures** regularly
-- Use **retention policies**: `--keep 30`
+- Use **retention policies**: `--retention-days 30`
 - Enable **soft delete** in Azure (30-day recovery)
 - Monitor backup success with Azure Monitor
 

docs/CLOUD.md

@@ -573,7 +573,7 @@ dbbackup cleanup minio://test-backups/test/ --retention-days 7 --dry-run
 
 3. **Use compression:**
    ```bash
-   --compression gzip  # Reduces upload size
+   --compression 6  # Reduces upload size
    ```
 
 ### Reliability
@@ -693,7 +693,7 @@ Error: checksum mismatch: expected abc123, got def456
 for db in db1 db2 db3; do
     dbbackup backup single $db \
         --cloud s3://production-backups/daily/$db/ \
-        --compression gzip
+        --compression 6
 done
 
 # Cleanup old backups (keep 30 days, min 10 backups)

docs/GCS.md

@@ -293,8 +293,8 @@ dbbackup cloud download \
 # Manual delete
 dbbackup cloud delete "gs://prod-backups/postgres/old_backup.sql"
 
-# Automatic cleanup (keep last 7 backups)
-dbbackup cleanup "gs://prod-backups/postgres/" --keep 7
+# Automatic cleanup (keep last 7 days, min 5 backups)
+dbbackup cleanup "gs://prod-backups/postgres/" --retention-days 7 --min-backups 5
 ```
 
 ### Scheduled Backups
@@ -310,7 +310,7 @@ dbbackup backup single production_db \
   --compression 9
 
 # Cleanup old backups
-dbbackup cleanup "gs://prod-backups/postgres/" --keep 30
+dbbackup cleanup "gs://prod-backups/postgres/" --retention-days 30 --min-backups 5
 ```
 
 **Crontab:**
@@ -482,7 +482,7 @@ Tests include:
 ### 4. Reliability
 
 - Test **restore procedures** regularly
-- Use **retention policies**: `--keep 30`
+- Use **retention policies**: `--retention-days 30`
 - Enable **object versioning** (30-day recovery)
 - Use **multi-region** buckets for disaster recovery
 - Monitor backup success with Cloud Monitoring

docs/LOCK_DEBUGGING.md

@@ -0,0 +1,266 @@
+# Lock Debugging Feature
+
+## Overview
+
+The `--debug-locks` flag provides complete visibility into the lock protection system introduced in v3.42.82. This eliminates the need for blind troubleshooting when diagnosing lock exhaustion issues.
+
+## Problem
+
+When PostgreSQL lock exhaustion occurs during restore:
+- User sees "out of shared memory" error after 7 hours
+- No visibility into why Large DB Guard chose conservative mode  
+- Unknown whether lock boost attempts succeeded
+- Unclear what actions are required to fix the issue
+- Requires 14 days of troubleshooting to understand the problem
+
+## Solution
+
+New `--debug-locks` flag captures every decision point in the lock protection system with detailed logging prefixed by 🔍 [LOCK-DEBUG].
+
+## Usage
+
+### CLI
+```bash
+# Single database restore with lock debugging
+dbbackup restore single mydb.dump --debug-locks --confirm
+
+# Cluster restore with lock debugging  
+dbbackup restore cluster backup.tar.gz --debug-locks --confirm
+
+# Can also use global flag
+dbbackup --debug-locks restore cluster backup.tar.gz --confirm
+```
+
+### TUI (Interactive Mode)
+```bash
+dbbackup  # Start interactive mode
+# Navigate to restore operation
+# Select your archive
+# Press 'l' to toggle lock debugging (🔍 icon appears when enabled)
+# Press Enter to proceed
+```
+
+## What Gets Logged
+
+### 1. Strategy Analysis Entry Point
+```
+🔍 [LOCK-DEBUG] Large DB Guard: Starting strategy analysis
+    archive=cluster_backup.tar.gz
+    dump_count=15
+```
+
+### 2. PostgreSQL Configuration Detection
+```
+🔍 [LOCK-DEBUG] Querying PostgreSQL for lock configuration
+    host=localhost
+    port=5432
+    user=postgres
+
+🔍 [LOCK-DEBUG] Successfully retrieved PostgreSQL lock settings
+    max_locks_per_transaction=2048
+    max_connections=256
+    total_capacity=524288
+```
+
+### 3. Guard Decision Logic  
+```
+🔍 [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)"
+```
+
+### 4. Lock Boost Attempts
+```
+🔍 [LOCK-DEBUG] boostPostgreSQLSettings: Starting lock boost procedure
+    target_lock_value=4096
+
+🔍 [LOCK-DEBUG] Current PostgreSQL lock configuration
+    current_max_locks=2048
+    target_max_locks=4096
+    boost_required=true
+
+🔍 [LOCK-DEBUG] Executing ALTER SYSTEM to boost locks
+    from=2048
+    to=4096
+
+🔍 [LOCK-DEBUG] ALTER SYSTEM succeeded - restart required
+    setting_saved_to=postgresql.auto.conf
+    active_after="PostgreSQL restart"
+```
+
+### 5. PostgreSQL Restart Attempts
+```
+🔍 [LOCK-DEBUG] Attempting PostgreSQL restart to activate new lock setting
+
+# If restart succeeds:
+🔍 [LOCK-DEBUG] PostgreSQL restart SUCCEEDED
+
+🔍 [LOCK-DEBUG] Post-restart verification
+    new_max_locks=4096
+    target_was=4096
+    verification=PASS
+
+# If restart fails:
+🔍 [LOCK-DEBUG] PostgreSQL restart FAILED
+    current_locks=2048
+    required_locks=4096
+    setting_saved=true
+    setting_active=false
+    verdict="ABORT - Manual restart required"
+```
+
+### 6. Final Verification
+```
+🔍 [LOCK-DEBUG] Lock boost function returned
+    original_max_locks=2048
+    target_max_locks=4096
+    boost_successful=false
+
+🔍 [LOCK-DEBUG] CRITICAL: Lock verification FAILED
+    actual_locks=2048
+    required_locks=4096
+    delta=2048
+    verdict="ABORT RESTORE"
+```
+
+## Example Workflow
+
+### Scenario: Lock Exhaustion on New System
+
+```bash
+# Step 1: Run restore with lock debugging enabled
+dbbackup restore cluster backup.tar.gz --debug-locks --confirm
+
+# Output shows:
+# 🔍 [LOCK-DEBUG] Guard decision: CONSERVATIVE mode
+#     current_locks=2048, required=4096
+#     verdict="ABORT - Manual restart required"
+
+# Step 2: Follow the actionable instructions
+sudo -u postgres psql -c "ALTER SYSTEM SET max_locks_per_transaction = 4096;"
+sudo systemctl restart postgresql
+
+# Step 3: Verify the change
+sudo -u postgres psql -c "SHOW max_locks_per_transaction;"
+# Output: 4096
+
+# Step 4: Retry restore (can disable debug now)
+dbbackup restore cluster backup.tar.gz --confirm
+
+# Success! Restore proceeds with verified lock protection
+```
+
+## When to Use
+
+### Enable Lock Debugging When:
+- Diagnosing lock exhaustion failures
+- Understanding why conservative mode was triggered
+- Verifying lock boost attempts worked
+- Troubleshooting "out of shared memory" errors  
+- Setting up restore on new systems with unknown lock config
+- Documenting lock requirements for compliance/security
+
+### Leave Disabled For:
+- Normal production restores (cleaner logs)
+- Scripted/automated restores (less noise)
+- When lock config is known to be sufficient
+- When restore performance is critical
+
+## Integration Points
+
+### Configuration
+- **Config Field:** `cfg.DebugLocks` (bool)
+- **CLI Flag:** `--debug-locks` (persistent flag on root command)
+- **TUI Toggle:** Press 'l' in restore preview screen
+- **Default:** `false` (opt-in only)
+
+### Files Modified
+- `internal/config/config.go` - Added DebugLocks field
+- `cmd/root.go` - Added --debug-locks persistent flag
+- `cmd/restore.go` - Wired flag to single/cluster restore commands
+- `internal/restore/large_db_guard.go` - 20+ debug log points
+- `internal/restore/engine.go` - 15+ debug log points in boost logic
+- `internal/tui/restore_preview.go` - 'l' key toggle with 🔍 icon
+
+### Log Locations
+All lock debug logs go to the configured logger (usually syslog or file) with level INFO. The 🔍 [LOCK-DEBUG] prefix makes them easy to grep:
+
+```bash
+# Filter lock debug logs
+journalctl -u dbbackup | grep 'LOCK-DEBUG'
+
+# Or in log files
+grep 'LOCK-DEBUG' /var/log/dbbackup.log
+```
+
+## Backward Compatibility
+
+- ✅ No breaking changes
+- ✅ Flag defaults to false (no output unless enabled)
+- ✅ Existing scripts continue to work unchanged
+- ✅ TUI users get new 'l' toggle automatically
+- ✅ CLI users can add --debug-locks when needed
+
+## Performance Impact
+
+Negligible - the debug logging only adds:
+- ~5 database queries (SHOW commands)
+- ~10 conditional if statements checking cfg.DebugLocks
+- ~50KB of additional log output when enabled
+- No impact on restore performance itself
+
+## Relationship to v3.42.82
+
+This feature completes the lock protection system:
+
+**v3.42.82 (Protection):**
+- Fixed Guard to always force conservative mode if max_locks < 4096
+- Fixed engine to abort restore if lock boost fails  
+- Ensures no path allows 7-hour failures
+
+**v3.42.83 (Visibility):**
+- Shows why Guard chose conservative mode
+- Displays lock config that was detected
+- Tracks boost attempts and outcomes
+- Explains why restore was aborted
+
+Together: Bulletproof protection + complete transparency.
+
+## Deployment
+
+1. Update to v3.42.83:
+   ```bash
+   wget https://github.com/PlusOne/dbbackup/releases/download/v3.42.83/dbbackup_linux_amd64
+   chmod +x dbbackup_linux_amd64
+   sudo mv dbbackup_linux_amd64 /usr/local/bin/dbbackup
+   ```
+
+2. Test lock debugging:
+   ```bash
+   dbbackup restore cluster test_backup.tar.gz --debug-locks --dry-run
+   ```
+
+3. Enable for production if diagnosing issues:
+   ```bash
+   dbbackup restore cluster production_backup.tar.gz --debug-locks --confirm
+   ```
+
+## Support
+
+For issues related to lock debugging:
+- Check logs for 🔍 [LOCK-DEBUG] entries
+- Verify PostgreSQL version supports ALTER SYSTEM (9.4+)
+- Ensure user has SUPERUSER role for ALTER SYSTEM
+- Check systemd/init scripts can restart PostgreSQL
+
+Related documentation:
+- verify_postgres_locks.sh - Script to check lock configuration
+- v3.42.82 release notes - Lock exhaustion bug fixes

docs/METRICS.md

@@ -0,0 +1,155 @@
+# DBBackup Prometheus Metrics
+
+This document describes all Prometheus metrics exposed by DBBackup for monitoring and alerting.
+
+## Backup Status Metrics
+
+### `dbbackup_rpo_seconds`
+**Type:** Gauge  
+**Labels:** `server`, `database`, `engine`  
+**Description:** Time in seconds since the last successful backup (Recovery Point Objective).
+
+**Recommended Thresholds:**
+- Green: < 43200 (12 hours)
+- Yellow: 43200-86400 (12-24 hours)  
+- Red: > 86400 (24+ hours)
+
+**Example Query:**
+```promql
+dbbackup_rpo_seconds{server="prod-db-01"} > 86400
+```
+
+---
+
+### `dbbackup_backup_total`
+**Type:** Counter  
+**Labels:** `server`, `database`, `engine`, `status`  
+**Description:** Total count of backup attempts, labeled by status (`success` or `failure`).
+
+**Example Query:**
+```promql
+# Failure rate over last hour
+rate(dbbackup_backup_total{status="failure"}[1h])
+```
+
+---
+
+### `dbbackup_backup_verified`
+**Type:** Gauge  
+**Labels:** `server`, `database`  
+**Description:** Whether the most recent backup was verified successfully (1 = verified, 0 = not verified).
+
+---
+
+### `dbbackup_last_backup_size_bytes`
+**Type:** Gauge  
+**Labels:** `server`, `database`, `engine`  
+**Description:** Size of the last successful backup in bytes.
+
+**Example Query:**
+```promql
+# Total backup storage across all databases
+sum(dbbackup_last_backup_size_bytes)
+```
+
+---
+
+### `dbbackup_last_backup_duration_seconds`
+**Type:** Gauge  
+**Labels:** `server`, `database`, `engine`  
+**Description:** Duration of the last backup operation in seconds.
+
+---
+
+## Deduplication Metrics
+
+### `dbbackup_dedup_ratio`
+**Type:** Gauge  
+**Labels:** `server`  
+**Description:** Overall deduplication efficiency (0-1). A ratio of 0.5 means 50% space savings.
+
+---
+
+### `dbbackup_dedup_database_ratio`
+**Type:** Gauge  
+**Labels:** `server`, `database`  
+**Description:** Per-database deduplication ratio.
+
+---
+
+### `dbbackup_dedup_space_saved_bytes`
+**Type:** Gauge  
+**Labels:** `server`  
+**Description:** Total bytes saved by deduplication across all backups.
+
+---
+
+### `dbbackup_dedup_disk_usage_bytes`
+**Type:** Gauge  
+**Labels:** `server`  
+**Description:** Actual disk usage of the chunk store after deduplication.
+
+---
+
+### `dbbackup_dedup_chunks_total`
+**Type:** Gauge  
+**Labels:** `server`  
+**Description:** Total number of unique content-addressed chunks in the dedup store.
+
+---
+
+### `dbbackup_dedup_compression_ratio`
+**Type:** Gauge  
+**Labels:** `server`  
+**Description:** Compression ratio achieved on chunk data (0-1). Higher = better compression.
+
+---
+
+### `dbbackup_dedup_oldest_chunk_timestamp`
+**Type:** Gauge  
+**Labels:** `server`  
+**Description:** Unix timestamp of the oldest chunk. Useful for monitoring retention policy.
+
+---
+
+### `dbbackup_dedup_newest_chunk_timestamp`
+**Type:** Gauge  
+**Labels:** `server`  
+**Description:** Unix timestamp of the newest chunk. Confirms dedup is working on recent backups.
+
+---
+
+## Alerting Rules
+
+See [alerting-rules.yaml](../grafana/alerting-rules.yaml) for pre-configured Prometheus alerting rules.
+
+### Recommended Alerts
+
+| Alert Name | Condition | Severity |
+|------------|-----------|----------|
+| BackupStale | `dbbackup_rpo_seconds > 86400` | Critical |
+| BackupFailed | `increase(dbbackup_backup_total{status="failure"}[1h]) > 0` | Warning |
+| BackupNotVerified | `dbbackup_backup_verified == 0` | Warning |
+| DedupDegraded | `dbbackup_dedup_ratio < 0.1` | Info |
+
+---
+
+## Dashboard
+
+Import the [Grafana dashboard](../grafana/dbbackup-dashboard.json) for visualization of all metrics.
+
+## Exporting Metrics
+
+Metrics are exposed at `/metrics` when running with `--metrics` flag:
+
+```bash
+dbbackup backup cluster --metrics --metrics-port 9090
+```
+
+Or configure in `.dbbackup.conf`:
+```ini
+[metrics]
+enabled = true
+port = 9090
+path = /metrics
+```

docs/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

docs/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

docs/SYSTEMD.md

@@ -0,0 +1,621 @@
+# Systemd Integration Guide
+
+This guide covers installing dbbackup as a systemd service for automated scheduled backups.
+
+## Quick Start (Installer)
+
+The easiest way to set up systemd services is using the built-in installer:
+
+```bash
+# Install as cluster backup service (daily at midnight)
+sudo dbbackup install --backup-type cluster --schedule daily
+
+# Check what would be installed (dry-run)
+dbbackup install --dry-run --backup-type cluster
+
+# Check installation status
+dbbackup install --status
+
+# Uninstall
+sudo dbbackup uninstall cluster --purge
+```
+
+## Installer Options
+
+| Flag | Description | Default |
+|------|-------------|---------|
+| `--instance NAME` | Instance name for named backups | - |
+| `--backup-type TYPE` | Backup type: `cluster`, `single`, `sample` | `cluster` |
+| `--schedule SPEC` | Timer schedule (see below) | `daily` |
+| `--with-metrics` | Install Prometheus metrics exporter | false |
+| `--metrics-port PORT` | HTTP port for metrics exporter | 9399 |
+| `--dry-run` | Preview changes without applying | false |
+
+### Schedule Format
+
+The `--schedule` option accepts systemd OnCalendar format:
+
+| Value | Description |
+|-------|-------------|
+| `daily` | Every day at midnight |
+| `weekly` | Every Monday at midnight |
+| `hourly` | Every hour |
+| `*-*-* 02:00:00` | Every day at 2:00 AM |
+| `*-*-* 00/6:00:00` | Every 6 hours |
+| `Mon *-*-* 03:00` | Every Monday at 3:00 AM |
+| `*-*-01 00:00:00` | First day of every month |
+
+Test schedule with: `systemd-analyze calendar "Mon *-*-* 03:00"`
+
+## What Gets Installed
+
+### Directory Structure
+
+```
+/etc/dbbackup/
+├── dbbackup.conf           # Main configuration
+└── env.d/
+    └── cluster.conf        # Instance credentials (mode 0600)
+
+/var/lib/dbbackup/
+├── catalog/
+│   └── backups.db          # SQLite backup catalog
+├── backups/                # Default backup storage
+└── metrics/                # Prometheus textfile metrics
+
+/var/log/dbbackup/          # Log files
+
+/usr/local/bin/dbbackup     # Binary copy
+```
+
+### Systemd Units
+
+**For cluster backups:**
+- `/etc/systemd/system/dbbackup-cluster.service` - Backup service
+- `/etc/systemd/system/dbbackup-cluster.timer` - Backup scheduler
+
+**For named instances:**
+- `/etc/systemd/system/dbbackup@.service` - Template service
+- `/etc/systemd/system/dbbackup@.timer` - Template timer
+
+**Metrics exporter (optional):**
+- `/etc/systemd/system/dbbackup-exporter.service`
+
+### System User
+
+A dedicated `dbbackup` user and group are created:
+- Home: `/var/lib/dbbackup`
+- Shell: `/usr/sbin/nologin`
+- Purpose: Run backup services with minimal privileges
+
+## Manual Installation
+
+If you prefer to set up systemd services manually without the installer:
+
+### Step 1: Create User and Directories
+
+```bash
+# Create system user
+sudo useradd --system --home-dir /var/lib/dbbackup --shell /usr/sbin/nologin dbbackup
+
+# Create directories
+sudo mkdir -p /etc/dbbackup/env.d
+sudo mkdir -p /var/lib/dbbackup/{catalog,backups,metrics}
+sudo mkdir -p /var/log/dbbackup
+
+# Set ownership
+sudo chown -R dbbackup:dbbackup /var/lib/dbbackup /var/log/dbbackup
+sudo chown root:dbbackup /etc/dbbackup
+sudo chmod 750 /etc/dbbackup
+
+# Copy binary
+sudo cp dbbackup /usr/local/bin/
+sudo chmod 755 /usr/local/bin/dbbackup
+```
+
+### Step 2: Create Configuration
+
+```bash
+# 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
+port=5432
+user=postgres
+backup-dir=/var/lib/dbbackup/backups
+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'
+PGPASSWORD=your_secure_password
+# Or for MySQL:
+# MYSQL_PWD=your_secure_password
+EOF
+sudo chmod 600 /etc/dbbackup/env.d/cluster.conf
+sudo chown dbbackup:dbbackup /etc/dbbackup/env.d/cluster.conf
+```
+
+### Step 3: Create Service Unit
+
+```bash
+sudo tee /etc/systemd/system/dbbackup-cluster.service << 'EOF'
+[Unit]
+Description=DBBackup Cluster Backup
+Documentation=https://github.com/PlusOne/dbbackup
+After=network.target postgresql.service mysql.service
+Wants=network.target
+
+[Service]
+Type=oneshot
+User=dbbackup
+Group=dbbackup
+
+# Load configuration
+EnvironmentFile=-/etc/dbbackup/env.d/cluster.conf
+
+# Working directory (config is loaded from .dbbackup.conf here)
+WorkingDirectory=/var/lib/dbbackup
+
+# Execute backup (reads .dbbackup.conf from WorkingDirectory)
+ExecStart=/usr/local/bin/dbbackup backup cluster \
+    --backup-dir /var/lib/dbbackup/backups \
+    --host localhost \
+    --port 5432 \
+    --user postgres \
+    --allow-root
+
+# Security hardening
+NoNewPrivileges=yes
+ProtectSystem=strict
+ProtectHome=yes
+PrivateTmp=yes
+PrivateDevices=yes
+ProtectKernelTunables=yes
+ProtectKernelModules=yes
+ProtectControlGroups=yes
+RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6
+RestrictNamespaces=yes
+RestrictRealtime=yes
+RestrictSUIDSGID=yes
+MemoryDenyWriteExecute=yes
+LockPersonality=yes
+
+# Allow write to specific paths
+ReadWritePaths=/var/lib/dbbackup /var/log/dbbackup
+
+# Capability restrictions
+CapabilityBoundingSet=CAP_DAC_READ_SEARCH CAP_NET_CONNECT
+AmbientCapabilities=
+
+# Resource limits
+MemoryMax=4G
+CPUQuota=80%
+
+# Prevent OOM killer from terminating backups
+OOMScoreAdjust=-100
+
+# Logging
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=dbbackup
+
+[Install]
+WantedBy=multi-user.target
+EOF
+```
+
+### Step 4: Create Timer Unit
+
+```bash
+sudo tee /etc/systemd/system/dbbackup-cluster.timer << 'EOF'
+[Unit]
+Description=DBBackup Cluster Backup Timer
+Documentation=https://github.com/PlusOne/dbbackup
+
+[Timer]
+# Run daily at midnight
+OnCalendar=daily
+
+# Randomize start time within 15 minutes to avoid thundering herd
+RandomizedDelaySec=900
+
+# Run immediately if we missed the last scheduled time
+Persistent=true
+
+# Run even if system was sleeping
+WakeSystem=false
+
+[Install]
+WantedBy=timers.target
+EOF
+```
+
+### Step 5: Enable and Start
+
+```bash
+# Reload systemd
+sudo systemctl daemon-reload
+
+# Enable timer (auto-start on boot)
+sudo systemctl enable dbbackup-cluster.timer
+
+# Start timer
+sudo systemctl start dbbackup-cluster.timer
+
+# Verify timer is active
+sudo systemctl status dbbackup-cluster.timer
+
+# View next scheduled run
+sudo systemctl list-timers dbbackup-cluster.timer
+```
+
+### Step 6: Test Backup
+
+```bash
+# Run backup manually
+sudo systemctl start dbbackup-cluster.service
+
+# Check status
+sudo systemctl status dbbackup-cluster.service
+
+# View logs
+sudo journalctl -u dbbackup-cluster.service -f
+```
+
+## Prometheus Metrics Exporter (Manual)
+
+### Service Unit
+
+```bash
+sudo tee /etc/systemd/system/dbbackup-exporter.service << 'EOF'
+[Unit]
+Description=DBBackup Prometheus Metrics Exporter
+Documentation=https://github.com/PlusOne/dbbackup
+After=network.target
+
+[Service]
+Type=simple
+User=dbbackup
+Group=dbbackup
+
+# Working directory
+WorkingDirectory=/var/lib/dbbackup
+
+# Start HTTP metrics server
+ExecStart=/usr/local/bin/dbbackup metrics serve --port 9399
+
+# Restart on failure
+Restart=on-failure
+RestartSec=10
+
+# Security hardening
+NoNewPrivileges=yes
+ProtectSystem=strict
+ProtectHome=yes
+PrivateTmp=yes
+PrivateDevices=yes
+ProtectKernelTunables=yes
+ProtectKernelModules=yes
+ProtectControlGroups=yes
+RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6
+RestrictNamespaces=yes
+RestrictRealtime=yes
+RestrictSUIDSGID=yes
+LockPersonality=yes
+
+# Catalog access
+ReadWritePaths=/var/lib/dbbackup
+
+# Capability restrictions
+CapabilityBoundingSet=CAP_NET_BIND_SERVICE
+AmbientCapabilities=
+
+# Logging
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=dbbackup-exporter
+
+[Install]
+WantedBy=multi-user.target
+EOF
+```
+
+### Enable Exporter
+
+```bash
+sudo systemctl daemon-reload
+sudo systemctl enable dbbackup-exporter
+sudo systemctl start dbbackup-exporter
+
+# Test
+curl http://localhost:9399/health
+curl http://localhost:9399/metrics
+```
+
+### Prometheus Configuration
+
+Add to `prometheus.yml`:
+
+```yaml
+scrape_configs:
+  - job_name: 'dbbackup'
+    static_configs:
+      - targets: ['localhost:9399']
+    scrape_interval: 60s
+```
+
+## Security Hardening
+
+The systemd units include comprehensive security hardening:
+
+| Setting | Purpose |
+|---------|---------|
+| `NoNewPrivileges=yes` | Prevent privilege escalation |
+| `ProtectSystem=strict` | Read-only filesystem except allowed paths |
+| `ProtectHome=yes` | Block access to /home, /root, /run/user |
+| `PrivateTmp=yes` | Isolated /tmp namespace |
+| `PrivateDevices=yes` | No access to physical devices |
+| `RestrictAddressFamilies` | Only Unix and IP sockets |
+| `MemoryDenyWriteExecute=yes` | Prevent code injection |
+| `CapabilityBoundingSet` | Minimal Linux capabilities |
+| `OOMScoreAdjust=-100` | Protect backup from OOM killer |
+
+### Database Access
+
+For PostgreSQL with peer authentication:
+```bash
+# Add dbbackup user to postgres group
+sudo usermod -aG postgres dbbackup
+
+# Or create a .pgpass file
+sudo -u dbbackup tee /var/lib/dbbackup/.pgpass << EOF
+localhost:5432:*:postgres:password
+EOF
+sudo chmod 600 /var/lib/dbbackup/.pgpass
+```
+
+For PostgreSQL with password authentication:
+```bash
+# Store password in environment file
+echo "PGPASSWORD=your_password" | sudo tee /etc/dbbackup/env.d/cluster.conf
+sudo chmod 600 /etc/dbbackup/env.d/cluster.conf
+```
+
+## Multiple Instances
+
+Run different backup configurations as separate instances:
+
+```bash
+# Install multiple instances
+sudo dbbackup install --instance production --schedule "*-*-* 02:00:00"
+sudo dbbackup install --instance staging --schedule "*-*-* 04:00:00"
+sudo dbbackup install --instance analytics --schedule "weekly"
+
+# Manage individually
+sudo systemctl status dbbackup@production.timer
+sudo systemctl start dbbackup@staging.service
+```
+
+Each instance has its own:
+- Configuration: `/etc/dbbackup/env.d/<instance>.conf`
+- Timer schedule
+- Journal logs: `journalctl -u dbbackup@<instance>.service`
+
+## Troubleshooting
+
+### View Logs
+
+```bash
+# Real-time logs
+sudo journalctl -u dbbackup-cluster.service -f
+
+# Last backup run
+sudo journalctl -u dbbackup-cluster.service -n 100
+
+# All dbbackup logs
+sudo journalctl -t dbbackup
+
+# Exporter logs
+sudo journalctl -u dbbackup-exporter -f
+```
+
+### Timer Not Running
+
+```bash
+# Check timer status
+sudo systemctl status dbbackup-cluster.timer
+
+# List all timers
+sudo systemctl list-timers --all | grep dbbackup
+
+# Check if timer is enabled
+sudo systemctl is-enabled dbbackup-cluster.timer
+```
+
+### Service Fails to Start
+
+```bash
+# Check service status
+sudo systemctl status dbbackup-cluster.service
+
+# View detailed error
+sudo journalctl -u dbbackup-cluster.service -n 50 --no-pager
+
+# 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 /var/lib/dbbackup/.dbbackup.conf
+```
+
+### Permission Denied
+
+```bash
+# Fix ownership
+sudo chown -R dbbackup:dbbackup /var/lib/dbbackup
+
+# Check SELinux (if enabled)
+sudo ausearch -m avc -ts recent
+
+# Check AppArmor (if enabled)
+sudo aa-status
+```
+
+### Exporter Not Accessible
+
+```bash
+# Check if running
+sudo systemctl status dbbackup-exporter
+
+# Check port binding
+sudo ss -tlnp | grep 9399
+
+# Test locally
+curl -v http://localhost:9399/health
+
+# Check firewall
+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
+
+```bash
+# Remove cluster backup (keeps config)
+sudo dbbackup uninstall cluster
+
+# Remove and purge configuration
+sudo dbbackup uninstall cluster --purge
+
+# Remove named instance
+sudo dbbackup uninstall production --purge
+```
+
+### Manual Removal
+
+```bash
+# Stop and disable services
+sudo systemctl stop dbbackup-cluster.timer dbbackup-cluster.service dbbackup-exporter
+sudo systemctl disable dbbackup-cluster.timer dbbackup-exporter
+
+# Remove unit files
+sudo rm /etc/systemd/system/dbbackup-cluster.service
+sudo rm /etc/systemd/system/dbbackup-cluster.timer
+sudo rm /etc/systemd/system/dbbackup-exporter.service
+sudo rm /etc/systemd/system/dbbackup@.service
+sudo rm /etc/systemd/system/dbbackup@.timer
+
+# Reload systemd
+sudo systemctl daemon-reload
+
+# Optional: Remove user and directories
+sudo userdel dbbackup
+sudo rm -rf /var/lib/dbbackup
+sudo rm -rf /etc/dbbackup
+sudo rm -rf /var/log/dbbackup
+sudo rm /usr/local/bin/dbbackup
+```
+
+## See Also
+
+- [README.md](README.md) - Main documentation
+- [DOCKER.md](DOCKER.md) - Docker deployment
+- [CLOUD.md](CLOUD.md) - Cloud storage configuration
+- [PITR.md](PITR.md) - Point-in-Time Recovery

go.mod

@@ -5,15 +5,33 @@ 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/cenkalti/backoff/v4 v4.3.0
 	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/fatih/color v1.18.0
 	github.com/go-sql-driver/mysql v1.9.3
+	github.com/hashicorp/go-multierror v1.1.1
 	github.com/jackc/pgx/v5 v5.7.6
+	github.com/klauspost/pgzip v1.2.6
+	github.com/schollz/progressbar/v3 v3.19.0
+	github.com/shirou/gopsutil/v3 v3.24.5
 	github.com/sirupsen/logrus v1.9.3
+	github.com/spf13/afero v1.15.0
 	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
+	modernc.org/sqlite v1.44.3
 )
 
 require (
@@ -24,20 +42,13 @@ 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
@@ -46,7 +57,6 @@ 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
@@ -59,7 +69,6 @@ require (
 	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
@@ -67,26 +76,37 @@ require (
 	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/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/klauspost/compress v1.18.3 // 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/ncruces/go-strftime v1.0.0 // 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/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
 	github.com/rivo/uniseg v0.4.7 // 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
@@ -97,17 +117,20 @@ 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/exp v0.0.0-20251023183803-a4bb9ffd2546 // 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/sync v0.19.0 // 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
 	google.golang.org/grpc v1.76.0 // indirect
 	google.golang.org/protobuf v1.36.10 // indirect
+	modernc.org/libc v1.67.6 // indirect
+	modernc.org/mathutil v1.7.1 // indirect
+	modernc.org/memory v1.11.0 // 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=
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@@ -62,30 +70,22 @@ github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.14 h1:FIouAnCE
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@@ -135,6 +157,12 @@ github.com/googleapis/enterprise-certificate-proxy v0.3.7 h1:zrn2Ee/nWmHulBx5sAV
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@@ -145,32 +173,58 @@ github.com/jackc/pgx/v5 v5.7.6 h1:rWQc5FwZSPX58r1OQmkuaNicxdmExaEz5A2DO2hUuTk=
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@@ -179,13 +233,17 @@ github.com/spiffe/go-spiffe/v2 v2.5.0 h1:N2I01KCUkv1FAjZXJMwh95KK1ZIQLYbPfhaxw8W
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+github.com/yusufpapurcu/wmi v1.2.4 h1:zFUKzehAFReQwLys1b/iSMl+JQGSCSjtVqQn9bBrPo0=
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 go.opentelemetry.io/auto/sdk v1.1.0 h1:cH53jehLUN6UFLY71z+NDOiNJqDdPRaXzTel0sJySYA=
@@ -198,6 +256,8 @@ 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 +266,39 @@ 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=
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-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=
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 golang.org/x/text v0.30.0 h1:yznKA/E9zq54KzlzBEAWn1NXSQ8DIp/NYMy88xJjl4k=
 golang.org/x/text v0.30.0/go.mod h1:yDdHFIX9t+tORqspjENWgzaCVXgk0yYnYuSZ8UzzBVM=
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@@ -259,3 +315,31 @@ gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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grafana/alerting-rules.yaml

@@ -0,0 +1,136 @@
+# DBBackup Prometheus Alerting Rules
+# Deploy these to your Prometheus server or use Grafana Alerting
+#
+# Usage with Prometheus:
+#   Add to prometheus.yml:
+#     rule_files:
+#       - /path/to/alerting-rules.yaml
+#
+# Usage with Grafana Alerting:
+#   Import these as Grafana alert rules via the UI or provisioning
+
+groups:
+  - name: dbbackup_alerts
+    interval: 1m
+    rules:
+      # Critical: No backup in 24 hours
+      - alert: DBBackupRPOCritical
+        expr: dbbackup_rpo_seconds > 86400
+        for: 5m
+        labels:
+          severity: critical
+        annotations:
+          summary: "No backup for {{ $labels.database }} in 24+ hours"
+          description: |
+            Database {{ $labels.database }} on {{ $labels.server }} has not been
+            backed up in {{ $value | humanizeDuration }}. This exceeds the 24-hour
+            RPO threshold. Immediate investigation required.
+          runbook_url: "https://github.com/your-org/dbbackup/wiki/Runbooks#rpo-critical"
+
+      # Warning: No backup in 12 hours
+      - alert: DBBackupRPOWarning
+        expr: dbbackup_rpo_seconds > 43200 and dbbackup_rpo_seconds <= 86400
+        for: 5m
+        labels:
+          severity: warning
+        annotations:
+          summary: "No backup for {{ $labels.database }} in 12+ hours"
+          description: |
+            Database {{ $labels.database }} on {{ $labels.server }} has not been
+            backed up in {{ $value | humanizeDuration }}. Check backup schedule.
+          runbook_url: "https://github.com/your-org/dbbackup/wiki/Runbooks#rpo-warning"
+
+      # Critical: Backup failures detected
+      - alert: DBBackupFailure
+        expr: increase(dbbackup_backup_total{status="failure"}[1h]) > 0
+        for: 1m
+        labels:
+          severity: critical
+        annotations:
+          summary: "Backup failure detected for {{ $labels.database }}"
+          description: |
+            One or more backup attempts failed for {{ $labels.database }} on
+            {{ $labels.server }} in the last hour. Check logs for details.
+          runbook_url: "https://github.com/your-org/dbbackup/wiki/Runbooks#backup-failure"
+
+      # Warning: Backup not verified
+      - alert: DBBackupNotVerified
+        expr: dbbackup_backup_verified == 0
+        for: 24h
+        labels:
+          severity: warning
+        annotations:
+          summary: "Backup for {{ $labels.database }} not verified"
+          description: |
+            The latest backup for {{ $labels.database }} on {{ $labels.server }}
+            has not been verified. Consider running verification to ensure
+            backup integrity.
+          runbook_url: "https://github.com/your-org/dbbackup/wiki/Runbooks#verification"
+
+      # Warning: Dedup ratio dropping
+      - alert: DBBackupDedupRatioLow
+        expr: dbbackup_dedup_ratio < 0.1
+        for: 1h
+        labels:
+          severity: warning
+        annotations:
+          summary: "Low deduplication ratio on {{ $labels.server }}"
+          description: |
+            Deduplication ratio on {{ $labels.server }} is {{ $value | printf "%.1f%%" }}.
+            This may indicate changes in data patterns or dedup configuration issues.
+          runbook_url: "https://github.com/your-org/dbbackup/wiki/Runbooks#dedup-low"
+
+      # Warning: Dedup disk usage growing rapidly
+      - alert: DBBackupDedupDiskGrowth
+        expr: |
+          predict_linear(dbbackup_dedup_disk_usage_bytes[7d], 30*24*3600) > 
+          (dbbackup_dedup_disk_usage_bytes * 2)
+        for: 1h
+        labels:
+          severity: warning
+        annotations:
+          summary: "Rapid dedup storage growth on {{ $labels.server }}"
+          description: |
+            Dedup storage on {{ $labels.server }} is growing rapidly.
+            At current rate, usage will double in 30 days.
+            Current usage: {{ $value | humanize1024 }}B
+          runbook_url: "https://github.com/your-org/dbbackup/wiki/Runbooks#storage-growth"
+
+      # Info: Exporter not responding
+      - alert: DBBackupExporterDown
+        expr: up{job="dbbackup"} == 0
+        for: 5m
+        labels:
+          severity: warning
+        annotations:
+          summary: "DBBackup exporter is down on {{ $labels.instance }}"
+          description: |
+            The DBBackup Prometheus exporter on {{ $labels.instance }} is not
+            responding. Metrics collection is affected.
+          runbook_url: "https://github.com/your-org/dbbackup/wiki/Runbooks#exporter-down"
+
+      # Info: Metrics stale (scrape timestamp old)
+      - alert: DBBackupMetricsStale
+        expr: time() - dbbackup_scrape_timestamp > 600
+        for: 5m
+        labels:
+          severity: warning
+        annotations:
+          summary: "DBBackup metrics are stale on {{ $labels.server }}"
+          description: |
+            Metrics for {{ $labels.server }} haven't been updated in
+            {{ $value | humanizeDuration }}. The exporter may be having issues.
+          runbook_url: "https://github.com/your-org/dbbackup/wiki/Runbooks#metrics-stale"
+
+      # Critical: No successful backups ever
+      - alert: DBBackupNeverSucceeded
+        expr: dbbackup_backup_total{status="success"} == 0
+        for: 1h
+        labels:
+          severity: critical
+        annotations:
+          summary: "No successful backups for {{ $labels.database }}"
+          description: |
+            Database {{ $labels.database }} on {{ $labels.server }} has never
+            had a successful backup. This requires immediate attention.
+          runbook_url: "https://github.com/your-org/dbbackup/wiki/Runbooks#never-succeeded"

grafana/dbbackup-dashboard.json

@@ -0,0 +1,1588 @@
+{
+  "annotations": {
+    "list": [
+      {
+        "builtIn": 1,
+        "datasource": {
+          "type": "grafana",
+          "uid": "-- Grafana --"
+        },
+        "enable": true,
+        "hide": true,
+        "iconColor": "rgba(0, 211, 255, 1)",
+        "name": "Annotations & Alerts",
+        "type": "dashboard"
+      }
+    ]
+  },
+  "description": "Comprehensive monitoring dashboard for DBBackup - tracks backup status, RPO, deduplication, and verification across all database servers.",
+  "editable": true,
+  "fiscalYearStartMonth": 0,
+  "graphTooltip": 1,
+  "id": null,
+  "links": [],
+  "liveNow": false,
+  "panels": [
+    {
+      "collapsed": false,
+      "gridPos": {
+        "h": 1,
+        "w": 24,
+        "x": 0,
+        "y": 0
+      },
+      "id": 200,
+      "panels": [],
+      "title": "Backup Overview",
+      "type": "row"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "description": "Shows SUCCESS if RPO is under 7 days, FAILED otherwise. Green = healthy backup schedule.",
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "thresholds"
+          },
+          "mappings": [
+            {
+              "options": {
+                "0": {
+                  "color": "red",
+                  "index": 1,
+                  "text": "FAILED"
+                },
+                "1": {
+                  "color": "green",
+                  "index": 0,
+                  "text": "SUCCESS"
+                }
+              },
+              "type": "value"
+            }
+          ],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "red",
+                "value": null
+              },
+              {
+                "color": "green",
+                "value": 1
+              }
+            ]
+          }
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 4,
+        "w": 5,
+        "x": 0,
+        "y": 1
+      },
+      "id": 1,
+      "options": {
+        "colorMode": "background",
+        "graphMode": "none",
+        "justifyMode": "auto",
+        "orientation": "auto",
+        "reduceOptions": {
+          "calcs": [
+            "lastNotNull"
+          ],
+          "fields": "",
+          "values": false
+        },
+        "textMode": "auto"
+      },
+      "pluginVersion": "10.2.0",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_rpo_seconds{server=~\"$server\"} < bool 604800",
+          "legendFormat": "{{database}}",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Last Backup Status",
+      "type": "stat"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "description": "Time elapsed since the last successful backup. Green < 12h, Yellow < 24h, Red > 24h.",
+      "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": 5,
+        "x": 5,
+        "y": 1
+      },
+      "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": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_rpo_seconds{server=~\"$server\"}",
+          "legendFormat": "{{database}}",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Time Since Last Backup",
+      "type": "stat"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "description": "Whether the most recent backup was verified successfully. 1 = verified and valid.",
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "thresholds"
+          },
+          "mappings": [
+            {
+              "options": {
+                "0": {
+                  "color": "orange",
+                  "index": 1,
+                  "text": "NOT VERIFIED"
+                },
+                "1": {
+                  "color": "green",
+                  "index": 0,
+                  "text": "VERIFIED"
+                }
+              },
+              "type": "value"
+            }
+          ],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "orange",
+                "value": null
+              },
+              {
+                "color": "green",
+                "value": 1
+              }
+            ]
+          }
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 4,
+        "w": 5,
+        "x": 10,
+        "y": 1
+      },
+      "id": 9,
+      "options": {
+        "colorMode": "background",
+        "graphMode": "none",
+        "justifyMode": "auto",
+        "orientation": "auto",
+        "reduceOptions": {
+          "calcs": [
+            "lastNotNull"
+          ],
+          "fields": "",
+          "values": false
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+        "textMode": "auto"
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+            "uid": "${DS_PROMETHEUS}"
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+        "type": "prometheus",
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+    },
+    {
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+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "description": "Total count of failed backup attempts. Any value > 0 warrants investigation.",
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+        "textMode": "auto"
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+        "uid": "${DS_PROMETHEUS}"
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+      "panels": [],
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+        "uid": "${DS_PROMETHEUS}"
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+        "orientation": "auto",
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+          "values": false
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+        "textMode": "auto"
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+      "pluginVersion": "10.2.0",
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+        "uid": "${DS_PROMETHEUS}"
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+      "fieldConfig": {
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+            "uid": "${DS_PROMETHEUS}"
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+          "refId": "A"
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+      "title": "Space Saved",
+      "type": "stat"
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+    {
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+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
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+        "graphMode": "none",
+        "justifyMode": "auto",
+        "orientation": "auto",
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+          "values": false
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+        "textMode": "auto"
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+      "pluginVersion": "10.2.0",
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+          "legendFormat": "__auto",
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+          "refId": "A"
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+      "title": "Disk Usage",
+      "type": "stat"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
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+      "description": "Total number of unique content-addressed chunks in the dedup store.",
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+        "y": 22
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+        "orientation": "auto",
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+          "refId": "A"
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+      "title": "Total Chunks",
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+    {
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+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "description": "Compression ratio achieved (0-1). Higher = better compression of chunk data.",
+      "fieldConfig": {
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+              {
+                "color": "orange",
+                "value": null
+              }
+            ]
+          },
+          "unit": "percentunit"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 5,
+        "w": 4,
+        "x": 0,
+        "y": 27
+      },
+      "id": 107,
+      "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": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_dedup_compression_ratio{server=~\"$server\"}",
+          "legendFormat": "__auto",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Compression Ratio",
+      "type": "stat"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "description": "Timestamp of the oldest chunk - useful for monitoring retention policy.",
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "thresholds"
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "semi-dark-blue",
+                "value": null
+              }
+            ]
+          },
+          "unit": "dateTimeFromNow"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 5,
+        "w": 4,
+        "x": 4,
+        "y": 27
+      },
+      "id": 108,
+      "options": {
+        "colorMode": "value",
+        "graphMode": "none",
+        "justifyMode": "auto",
+        "orientation": "auto",
+        "reduceOptions": {
+          "calcs": ["lastNotNull"],
+          "fields": "",
+          "values": false
+        },
+        "textMode": "auto"
+      },
+      "pluginVersion": "10.2.0",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_dedup_oldest_chunk_timestamp{server=~\"$server\"} * 1000",
+          "legendFormat": "__auto",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Oldest Chunk",
+      "type": "stat"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "description": "Timestamp of the newest chunk - confirms dedup is working on recent backups.",
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "thresholds"
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "semi-dark-green",
+                "value": null
+              }
+            ]
+          },
+          "unit": "dateTimeFromNow"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 5,
+        "w": 4,
+        "x": 8,
+        "y": 27
+      },
+      "id": 109,
+      "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": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_dedup_newest_chunk_timestamp{server=~\"$server\"} * 1000",
+          "legendFormat": "__auto",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Newest Chunk",
+      "type": "stat"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "description": "Per-database deduplication efficiency over time. Compare databases to identify which benefit most from dedup.",
+      "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": 32
+      },
+      "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{server=~\"$server\"}",
+          "legendFormat": "{{database}}",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Dedup Ratio by Database",
+      "type": "timeseries"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "description": "Storage trends: compare space saved by dedup vs actual disk usage over time.",
+      "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": 32
+      },
+      "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": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_dedup_space_saved_bytes{server=~\"$server\"}",
+          "legendFormat": "Space Saved",
+          "range": true,
+          "refId": "A"
+        },
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "code",
+          "expr": "dbbackup_dedup_disk_usage_bytes{server=~\"$server\"}",
+          "legendFormat": "Disk Usage",
+          "range": true,
+          "refId": "B"
+        }
+      ],
+      "title": "Dedup Storage Over Time",
+      "type": "timeseries"
+    }
+  ],
+  "refresh": "30s",
+  "schemaVersion": 38,
+  "tags": [
+    "dbbackup",
+    "backup",
+    "database",
+    "dedup",
+    "monitoring"
+  ],
+  "templating": {
+    "list": [
+      {
+        "current": {
+          "selected": false,
+          "text": "All",
+          "value": "$__all"
+        },
+        "datasource": {
+          "type": "prometheus",
+          "uid": "${DS_PROMETHEUS}"
+        },
+        "definition": "label_values(dbbackup_rpo_seconds, server)",
+        "hide": 0,
+        "includeAll": true,
+        "label": "Server",
+        "multi": true,
+        "name": "server",
+        "options": [],
+        "query": {
+          "query": "label_values(dbbackup_rpo_seconds, server)",
+          "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()
 
@@ -196,15 +198,15 @@ 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("   PostgreSQL is using '" + string(method) + "' authentication\n")
+	msg.WriteString("   OS user '" + osUser + "' cannot authenticate as DB user '" + dbUser + "'\n\n")
 
-	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("   1. Run as matching user:\n")
 	msg.WriteString(fmt.Sprintf("      sudo -u %s %s\n\n", dbUser, getCommandLine()))
 
 	msg.WriteString("   2. Configure ~/.pgpass file (recommended):\n")
@@ -212,13 +214,13 @@ func buildAuthMismatchMessage(osUser, dbUser string, method AuthMethod) string {
 	msg.WriteString("      chmod 0600 ~/.pgpass\n\n")
 
 	msg.WriteString("   3. Set PGPASSWORD environment variable:\n")
-	msg.WriteString(fmt.Sprintf("      export PGPASSWORD=your_password\n"))
-	msg.WriteString(fmt.Sprintf("      %s\n\n", getCommandLine()))
+	msg.WriteString("      export PGPASSWORD=your_password\n")
+	msg.WriteString("      " + getCommandLine() + "\n\n")
 
 	msg.WriteString("   4. Provide password via flag:\n")
-	msg.WriteString(fmt.Sprintf("      %s --password your_password\n\n", getCommandLine()))
+	msg.WriteString("      " + getCommandLine() + " --password your_password\n\n")
 
-	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

@@ -20,6 +20,7 @@ import (
 	"dbbackup/internal/cloud"
 	"dbbackup/internal/config"
 	"dbbackup/internal/database"
+	"dbbackup/internal/fs"
 	"dbbackup/internal/logger"
 	"dbbackup/internal/metadata"
 	"dbbackup/internal/metrics"
@@ -28,14 +29,22 @@ 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 +95,23 @@ 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
+}
+
+// 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 +469,14 @@ 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 +491,8 @@ 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 +501,7 @@ 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 +538,24 @@ 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 +634,36 @@ 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
@@ -663,6 +707,7 @@ func (e *Engine) monitorCommandProgress(stderr io.ReadCloser, tracker *progress.
 }
 
 // executeMySQLWithProgressAndCompression handles MySQL backup with compression and progress
+// Uses in-process pgzip for parallel compression (2-4x faster on multi-core systems)
 func (e *Engine) executeMySQLWithProgressAndCompression(ctx context.Context, cmdArgs []string, outputFile string, tracker *progress.OperationTracker) error {
 	// Create mysqldump command
 	dumpCmd := exec.CommandContext(ctx, cmdArgs[0], cmdArgs[1:]...)
@@ -671,9 +716,6 @@ func (e *Engine) executeMySQLWithProgressAndCompression(ctx context.Context, cmd
 		dumpCmd.Env = append(dumpCmd.Env, "MYSQL_PWD="+e.cfg.Password)
 	}
 
-	// Create gzip command
-	gzipCmd := exec.CommandContext(ctx, "gzip", fmt.Sprintf("-%d", e.cfg.CompressionLevel))
-
 	// Create output file
 	outFile, err := os.Create(outputFile)
 	if err != nil {
@@ -681,48 +723,83 @@ func (e *Engine) executeMySQLWithProgressAndCompression(ctx context.Context, cmd
 	}
 	defer outFile.Close()
 
-	// Set up pipeline: mysqldump | gzip > outputfile
+	// Create parallel gzip writer using pgzip
+	gzWriter, err := fs.NewParallelGzipWriter(outFile, e.cfg.CompressionLevel)
+	if err != nil {
+		return fmt.Errorf("failed to create gzip writer: %w", err)
+	}
+	defer gzWriter.Close()
+
+	// Set up pipeline: mysqldump stdout -> pgzip writer -> file
 	pipe, err := dumpCmd.StdoutPipe()
 	if err != nil {
 		return fmt.Errorf("failed to create pipe: %w", err)
 	}
 
-	gzipCmd.Stdin = pipe
-	gzipCmd.Stdout = outFile
-
 	// Get stderr for progress monitoring
 	stderr, err := dumpCmd.StderrPipe()
 	if err != nil {
 		return fmt.Errorf("failed to get stderr pipe: %w", err)
 	}
 
-	// Start monitoring progress
-	go e.monitorCommandProgress(stderr, tracker)
-
-	// Start both commands
-	if err := gzipCmd.Start(); err != nil {
-		return fmt.Errorf("failed to start gzip: %w", err)
-	}
+	// Start monitoring progress in goroutine
+	stderrDone := make(chan struct{})
+	go func() {
+		defer close(stderrDone)
+		e.monitorCommandProgress(stderr, tracker)
+	}()
 
+	// Start mysqldump
 	if err := dumpCmd.Start(); err != nil {
 		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)
+	// Copy mysqldump output through pgzip in a goroutine
+	copyDone := make(chan error, 1)
+	go func() {
+		_, err := io.Copy(gzWriter, pipe)
+		copyDone <- 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()
+		<-dumpDone
+		return ctx.Err()
 	}
 
-	// Close pipe and wait for gzip
-	pipe.Close()
-	if err := gzipCmd.Wait(); err != nil {
-		return fmt.Errorf("gzip failed: %w", err)
+	// Wait for stderr reader
+	<-stderrDone
+
+	// Wait for copy to complete
+	if copyErr := <-copyDone; copyErr != nil {
+		return fmt.Errorf("compression failed: %w", copyErr)
+	}
+
+	// Close gzip writer to flush all data
+	if err := gzWriter.Close(); err != nil {
+		return fmt.Errorf("failed to close gzip writer: %w", err)
+	}
+
+	if dumpErr != nil {
+		return fmt.Errorf("mysqldump failed: %w", dumpErr)
 	}
 
 	return nil
 }
 
 // executeMySQLWithCompression handles MySQL backup with compression
+// Uses in-process pgzip for parallel compression (2-4x faster on multi-core systems)
 func (e *Engine) executeMySQLWithCompression(ctx context.Context, cmdArgs []string, outputFile string) error {
 	// Create mysqldump command
 	dumpCmd := exec.CommandContext(ctx, cmdArgs[0], cmdArgs[1:]...)
@@ -731,9 +808,6 @@ func (e *Engine) executeMySQLWithCompression(ctx context.Context, cmdArgs []stri
 		dumpCmd.Env = append(dumpCmd.Env, "MYSQL_PWD="+e.cfg.Password)
 	}
 
-	// Create gzip command
-	gzipCmd := exec.CommandContext(ctx, "gzip", fmt.Sprintf("-%d", e.cfg.CompressionLevel))
-
 	// Create output file
 	outFile, err := os.Create(outputFile)
 	if err != nil {
@@ -741,25 +815,60 @@ func (e *Engine) executeMySQLWithCompression(ctx context.Context, cmdArgs []stri
 	}
 	defer outFile.Close()
 
-	// Set up pipeline: mysqldump | gzip > outputfile
-	stdin, err := dumpCmd.StdoutPipe()
+	// Create parallel gzip writer using pgzip
+	gzWriter, err := fs.NewParallelGzipWriter(outFile, e.cfg.CompressionLevel)
+	if err != nil {
+		return fmt.Errorf("failed to create gzip writer: %w", err)
+	}
+	defer gzWriter.Close()
+
+	// Set up pipeline: mysqldump stdout -> pgzip writer -> file
+	pipe, err := dumpCmd.StdoutPipe()
 	if err != nil {
 		return fmt.Errorf("failed to create pipe: %w", err)
 	}
-	gzipCmd.Stdin = stdin
-	gzipCmd.Stdout = outFile
 
-	// Start both commands
-	if err := gzipCmd.Start(); err != nil {
-		return fmt.Errorf("failed to start gzip: %w", err)
+	// Start mysqldump
+	if err := dumpCmd.Start(); err != nil {
+		return fmt.Errorf("failed to start mysqldump: %w", err)
 	}
 
-	if err := dumpCmd.Run(); err != nil {
-		return fmt.Errorf("mysqldump failed: %w", err)
+	// Copy mysqldump output through pgzip in a goroutine
+	copyDone := make(chan error, 1)
+	go func() {
+		_, err := io.Copy(gzWriter, pipe)
+		copyDone <- 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()
+		<-dumpDone
+		return ctx.Err()
 	}
 
-	if err := gzipCmd.Wait(); err != nil {
-		return fmt.Errorf("gzip failed: %w", err)
+	// Wait for copy to complete
+	if copyErr := <-copyDone; copyErr != nil {
+		return fmt.Errorf("compression failed: %w", copyErr)
+	}
+
+	// Close gzip writer to flush all data
+	if err := gzWriter.Close(); err != nil {
+		return fmt.Errorf("failed to close gzip writer: %w", err)
+	}
+
+	if dumpErr != nil {
+		return fmt.Errorf("mysqldump failed: %w", dumpErr)
 	}
 
 	return nil
@@ -836,105 +945,89 @@ 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 != "" {
 		cmd.Env = append(cmd.Env, "PGPASSWORD="+e.cfg.Password)
 	}
 
-	output, err := cmd.Output()
+	// Use Start/Wait pattern for proper Ctrl+C handling
+	stdout, err := cmd.StdoutPipe()
 	if err != nil {
-		return fmt.Errorf("pg_dumpall failed: %w", err)
+		return fmt.Errorf("failed to create stdout pipe: %w", err)
+	}
+
+	if err := cmd.Start(); err != nil {
+		return fmt.Errorf("failed to start pg_dumpall: %w", err)
+	}
+
+	// Read output in goroutine
+	var output []byte
+	var readErr error
+	readDone := make(chan struct{})
+	go func() {
+		defer close(readDone)
+		output, readErr = io.ReadAll(stdout)
+	}()
+
+	// 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 normally
+	case <-ctx.Done():
+		e.log.Warn("Globals backup cancelled - killing pg_dumpall")
+		cmd.Process.Kill()
+		<-cmdDone
+		return ctx.Err()
+	}
+
+	<-readDone
+
+	if cmdErr != nil {
+		return fmt.Errorf("pg_dumpall failed: %w", cmdErr)
+	}
+	if readErr != nil {
+		return fmt.Errorf("failed to read pg_dumpall output: %w", readErr)
 	}
 
 	return os.WriteFile(globalsFile, output, 0644)
 }
 
-// createArchive creates a compressed tar archive
+// createArchive creates a compressed tar archive using parallel gzip compression
+// Uses in-process pgzip for 2-4x faster compression on multi-core systems
 func (e *Engine) createArchive(ctx context.Context, sourceDir, outputFile string) error {
-	// Use pigz for faster parallel compression if available, otherwise use standard gzip
-	compressCmd := "tar"
-	compressArgs := []string{"-czf", outputFile, "-C", sourceDir, "."}
+	e.log.Debug("Creating archive with parallel compression",
+		"source", sourceDir,
+		"output", outputFile,
+		"compression", e.cfg.CompressionLevel)
 
-	// Check if pigz is available for faster parallel compression
-	if _, err := exec.LookPath("pigz"); err == nil {
-		// Use pigz with number of cores for parallel compression
-		compressArgs = []string{"-cf", "-", "-C", sourceDir, "."}
-		cmd := exec.CommandContext(ctx, "tar", compressArgs...)
-
-		// Create output file
-		outFile, err := os.Create(outputFile)
-		if err != nil {
-			// Fallback to regular tar
-			goto regularTar
+	// Use in-process parallel compression with pgzip
+	err := fs.CreateTarGzParallel(ctx, sourceDir, outputFile, e.cfg.CompressionLevel, func(progress fs.CreateProgress) {
+		// Optional: log progress for large archives
+		if progress.FilesCount%100 == 0 && progress.FilesCount > 0 {
+			e.log.Debug("Archive progress", "files", progress.FilesCount, "bytes", progress.BytesWritten)
 		}
-		defer outFile.Close()
+	})
 
-		// Pipe to pigz for parallel compression
-		pigzCmd := exec.CommandContext(ctx, "pigz", "-p", strconv.Itoa(e.cfg.Jobs))
-
-		tarOut, err := cmd.StdoutPipe()
-		if err != nil {
-			outFile.Close()
-			// Fallback to regular tar
-			goto regularTar
-		}
-		pigzCmd.Stdin = tarOut
-		pigzCmd.Stdout = outFile
-
-		// Start both commands
-		if err := pigzCmd.Start(); err != nil {
-			outFile.Close()
-			goto regularTar
-		}
-		if err := cmd.Start(); err != nil {
-			pigzCmd.Process.Kill()
-			outFile.Close()
-			goto regularTar
-		}
-
-		// Wait for tar to finish
-		if err := cmd.Wait(); err != nil {
-			pigzCmd.Process.Kill()
-			return fmt.Errorf("tar failed: %w", err)
-		}
-
-		// Wait for pigz to finish
-		if err := pigzCmd.Wait(); err != nil {
-			return fmt.Errorf("pigz compression failed: %w", err)
-		}
-		return nil
+	if err != nil {
+		return fmt.Errorf("parallel archive creation failed: %w", err)
 	}
 
-regularTar:
-	// Standard tar with gzip (fallback)
-	cmd := exec.CommandContext(ctx, compressCmd, compressArgs...)
-
-	// Stream stderr to avoid memory issues
-	// Use io.Copy to ensure goroutine completes when pipe closes
-	stderr, err := cmd.StderrPipe()
-	if err == nil {
-		go func() {
-			scanner := bufio.NewScanner(stderr)
-			for scanner.Scan() {
-				line := scanner.Text()
-				if line != "" {
-					e.log.Debug("Archive creation", "output", line)
-				}
-			}
-			// Scanner will exit when stderr pipe closes after cmd.Wait()
-		}()
-	}
-
-	if err := cmd.Run(); err != nil {
-		return fmt.Errorf("tar failed: %w", err)
-	}
-	// cmd.Run() calls Wait() which closes stderr pipe, terminating the goroutine
 	return nil
 }
 
@@ -1144,23 +1237,29 @@ 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 +1329,27 @@ 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 +1371,10 @@ 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 +1385,30 @@ 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
@@ -1368,25 +1510,53 @@ func (e *Engine) executeWithStreamingCompression(ctx context.Context, cmdArgs []
 
 	// Then start pg_dump
 	if err := dumpCmd.Start(); err != nil {
+		compressCmd.Process.Kill()
 		return fmt.Errorf("failed to start pg_dump: %w", err)
 	}
 
-	// Wait for pg_dump to complete
-	dumpErr := dumpCmd.Wait()
+	// Wait for pg_dump in a goroutine to handle context timeout properly
+	// This prevents deadlock if pipe buffer fills and pg_dump blocks
+	dumpDone := make(chan error, 1)
+	go func() {
+		dumpDone <- dumpCmd.Wait()
+	}()
 
-	// Close stdout pipe to signal compressor we're done - MUST happen after Wait()
-	// but before we check for errors, so compressor gets EOF
+	var dumpErr error
+	select {
+	case dumpErr = <-dumpDone:
+		// pg_dump completed (success or failure)
+	case <-ctx.Done():
+		// Context cancelled/timeout - kill pg_dump to unblock
+		e.log.Warn("Backup timeout - killing pg_dump process")
+		dumpCmd.Process.Kill()
+		<-dumpDone // Wait for goroutine to finish
+		dumpErr = ctx.Err()
+	}
+
+	// Close stdout pipe to signal compressor we're done
+	// This MUST happen after pg_dump exits to avoid broken pipe
 	dumpStdout.Close()
 
 	// Wait for compression to complete
 	compressErr := compressCmd.Wait()
 
-	// Check errors in order
+	// Check errors - compressor failure first (it's usually the root cause)
+	if compressErr != nil {
+		e.log.Error("Compressor failed", "error", compressErr)
+		return fmt.Errorf("compression failed (check disk space): %w", compressErr)
+	}
 	if dumpErr != nil {
+		// Check for SIGPIPE (exit code 141) - indicates compressor died first
+		if exitErr, ok := dumpErr.(*exec.ExitError); ok && exitErr.ExitCode() == 141 {
+			e.log.Error("pg_dump received SIGPIPE - compressor may have failed")
+			return fmt.Errorf("pg_dump broken pipe - check disk space and compressor")
+		}
 		return fmt.Errorf("pg_dump failed: %w", dumpErr)
 	}
-	if compressErr != nil {
-		return fmt.Errorf("compression failed: %w", compressErr)
+
+	// Sync file to disk to ensure durability (prevents truncation on power loss)
+	if err := outFile.Sync(); err != nil {
+		e.log.Warn("Failed to sync output file", "error", err)
 	}
 
 	e.log.Debug("Streaming compression completed", "output", compressedFile)
@@ -1406,3 +1576,22 @@ 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_extract.go

@@ -2,12 +2,13 @@ package backup
 
 import (
 	"archive/tar"
-	"compress/gzip"
 	"context"
 	"fmt"
 	"io"
 	"os"
 	"path/filepath"
+
+	"github.com/klauspost/pgzip"
 )
 
 // extractTarGz extracts a tar.gz archive to the specified directory
@@ -20,8 +21,8 @@ func (e *PostgresIncrementalEngine) extractTarGz(ctx context.Context, archivePat
 	}
 	defer archiveFile.Close()
 
-	// Create gzip reader
-	gzReader, err := gzip.NewReader(archiveFile)
+	// Create parallel gzip reader for faster decompression
+	gzReader, err := pgzip.NewReader(archiveFile)
 	if err != nil {
 		return fmt.Errorf("failed to create gzip reader: %w", err)
 	}

internal/backup/incremental_mysql.go

@@ -2,7 +2,6 @@ package backup
 
 import (
 	"archive/tar"
-	"compress/gzip"
 	"context"
 	"crypto/sha256"
 	"encoding/hex"
@@ -13,6 +12,8 @@ import (
 	"strings"
 	"time"
 
+	"github.com/klauspost/pgzip"
+
 	"dbbackup/internal/logger"
 	"dbbackup/internal/metadata"
 )
@@ -367,15 +368,15 @@ func (e *MySQLIncrementalEngine) CalculateFileChecksum(path string) (string, err
 
 // createTarGz creates a tar.gz archive with the specified changed files
 func (e *MySQLIncrementalEngine) createTarGz(ctx context.Context, outputFile string, changedFiles []ChangedFile, config *IncrementalBackupConfig) error {
-	// Import needed for tar/gzip
+	// Create output file
 	outFile, err := os.Create(outputFile)
 	if err != nil {
 		return fmt.Errorf("failed to create output file: %w", err)
 	}
 	defer outFile.Close()
 
-	// Create gzip writer
-	gzWriter, err := gzip.NewWriterLevel(outFile, config.CompressionLevel)
+	// Create parallel gzip writer for faster compression
+	gzWriter, err := pgzip.NewWriterLevel(outFile, config.CompressionLevel)
 	if err != nil {
 		return fmt.Errorf("failed to create gzip writer: %w", err)
 	}
@@ -460,8 +461,8 @@ func (e *MySQLIncrementalEngine) extractTarGz(ctx context.Context, archivePath,
 	}
 	defer archiveFile.Close()
 
-	// Create gzip reader
-	gzReader, err := gzip.NewReader(archiveFile)
+	// Create parallel gzip reader for faster decompression
+	gzReader, err := pgzip.NewReader(archiveFile)
 	if err != nil {
 		return fmt.Errorf("failed to create gzip reader: %w", err)
 	}

internal/backup/incremental_tar.go

@@ -2,11 +2,12 @@ package backup
 
 import (
 	"archive/tar"
-	"compress/gzip"
 	"context"
 	"fmt"
 	"io"
 	"os"
+
+	"github.com/klauspost/pgzip"
 )
 
 // createTarGz creates a tar.gz archive with the specified changed files
@@ -18,8 +19,8 @@ func (e *PostgresIncrementalEngine) createTarGz(ctx context.Context, outputFile
 	}
 	defer outFile.Close()
 
-	// Create gzip writer
-	gzWriter, err := gzip.NewWriterLevel(outFile, config.CompressionLevel)
+	// Create parallel gzip writer for faster compression
+	gzWriter, err := pgzip.NewWriterLevel(outFile, config.CompressionLevel)
 	if err != nil {
 		return fmt.Errorf("failed to create gzip writer: %w", err)
 	}

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/catalog/sqlite.go

@@ -11,7 +11,7 @@ import (
 	"strings"
 	"time"
 
-	_ "github.com/mattn/go-sqlite3"
+	_ "modernc.org/sqlite" // Pure Go SQLite driver (no CGO required)
 )
 
 // SQLiteCatalog implements Catalog interface with SQLite storage
@@ -28,7 +28,7 @@ func NewSQLiteCatalog(dbPath string) (*SQLiteCatalog, error) {
 		return nil, fmt.Errorf("failed to create catalog directory: %w", err)
 	}
 
-	db, err := sql.Open("sqlite3", dbPath+"?_journal_mode=WAL&_foreign_keys=ON")
+	db, err := sql.Open("sqlite", dbPath+"?_journal_mode=WAL&_foreign_keys=ON")
 	if err != nil {
 		return nil, fmt.Errorf("failed to open catalog database: %w", err)
 	}

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/locks.go

@@ -0,0 +1,181 @@
+package checks
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"os/exec"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// lockRecommendation represents a normalized recommendation for locks
+type lockRecommendation int
+
+const (
+	recIncrease lockRecommendation = iota
+	recSingleThreadedOrIncrease
+	recSingleThreaded
+)
+
+// determineLockRecommendation contains the pure logic (easy to unit-test).
+func determineLockRecommendation(locks, conns, prepared int64) (status CheckStatus, rec lockRecommendation) {
+	// follow same thresholds as legacy script
+	switch {
+	case locks < 2048:
+		return StatusFailed, recIncrease
+	case locks < 8192:
+		return StatusWarning, recIncrease
+	case locks < 65536:
+		return StatusWarning, recSingleThreadedOrIncrease
+	default:
+		return StatusPassed, recSingleThreaded
+	}
+}
+
+var nonDigits = regexp.MustCompile(`[^0-9]+`)
+
+// parseNumeric strips non-digits and parses up to 10 characters (like the shell helper)
+func parseNumeric(s string) (int64, error) {
+	if s == "" {
+		return 0, fmt.Errorf("empty string")
+	}
+	s = nonDigits.ReplaceAllString(s, "")
+	if len(s) > 10 {
+		s = s[:10]
+	}
+	v, err := strconv.ParseInt(s, 10, 64)
+	if err != nil {
+		return 0, fmt.Errorf("parse error: %w", err)
+	}
+	return v, nil
+}
+
+// execPsql runs psql with the supplied arguments and returns stdout (trimmed).
+// It attempts to avoid leaking passwords in error messages.
+func execPsql(ctx context.Context, args []string, env []string, useSudo bool) (string, error) {
+	var cmd *exec.Cmd
+	if useSudo {
+		// sudo -u postgres psql --no-psqlrc -t -A -c "..."
+		all := append([]string{"-u", "postgres", "--"}, "psql")
+		all = append(all, args...)
+		cmd = exec.CommandContext(ctx, "sudo", all...)
+	} else {
+		cmd = exec.CommandContext(ctx, "psql", args...)
+	}
+	cmd.Env = append(os.Environ(), env...)
+	out, err := cmd.Output()
+	if err != nil {
+		// prefer a concise error
+		return "", fmt.Errorf("psql failed: %w", err)
+	}
+	return strings.TrimSpace(string(out)), nil
+}
+
+// checkPostgresLocks probes PostgreSQL (via psql) and returns a PreflightCheck.
+// It intentionally does not require a live internal/database.Database; it uses
+// the configured connection parameters or falls back to local sudo when possible.
+func (p *PreflightChecker) checkPostgresLocks(ctx context.Context) PreflightCheck {
+	check := PreflightCheck{Name: "PostgreSQL lock configuration"}
+
+	if !p.cfg.IsPostgreSQL() {
+		check.Status = StatusSkipped
+		check.Message = "Skipped (not a PostgreSQL configuration)"
+		return check
+	}
+
+	// Build common psql args
+	psqlArgs := []string{"--no-psqlrc", "-t", "-A", "-c"}
+	queryLocks := "SHOW max_locks_per_transaction;"
+	queryConns := "SHOW max_connections;"
+	queryPrepared := "SHOW max_prepared_transactions;"
+
+	// Build connection flags
+	if p.cfg.Host != "" {
+		psqlArgs = append(psqlArgs, "-h", p.cfg.Host)
+	}
+	psqlArgs = append(psqlArgs, "-p", fmt.Sprint(p.cfg.Port))
+	if p.cfg.User != "" {
+		psqlArgs = append(psqlArgs, "-U", p.cfg.User)
+	}
+	// Use database if provided (helps some setups)
+	if p.cfg.Database != "" {
+		psqlArgs = append(psqlArgs, "-d", p.cfg.Database)
+	}
+
+	// Env: prefer PGPASSWORD if configured
+	env := []string{}
+	if p.cfg.Password != "" {
+		env = append(env, "PGPASSWORD="+p.cfg.Password)
+	}
+
+	ctx, cancel := context.WithTimeout(ctx, 5*time.Second)
+	defer cancel()
+
+	// helper to run a single SHOW query and parse numeric result
+	runShow := func(q string) (int64, error) {
+		args := append(psqlArgs, q)
+		out, err := execPsql(ctx, args, env, false)
+		if err != nil {
+			// If local host and no explicit auth, try sudo -u postgres
+			if (p.cfg.Host == "" || p.cfg.Host == "localhost" || p.cfg.Host == "127.0.0.1") && p.cfg.Password == "" {
+				out, err = execPsql(ctx, append(psqlArgs, q), env, true)
+				if err != nil {
+					return 0, err
+				}
+			} else {
+				return 0, err
+			}
+		}
+		v, err := parseNumeric(out)
+		if err != nil {
+			return 0, fmt.Errorf("non-numeric response from psql: %q", out)
+		}
+		return v, nil
+	}
+
+	locks, err := runShow(queryLocks)
+	if err != nil {
+		check.Status = StatusFailed
+		check.Message = "Could not read max_locks_per_transaction"
+		check.Details = err.Error()
+		return check
+	}
+
+	conns, err := runShow(queryConns)
+	if err != nil {
+		check.Status = StatusFailed
+		check.Message = "Could not read max_connections"
+		check.Details = err.Error()
+		return check
+	}
+
+	prepared, _ := runShow(queryPrepared) // optional; treat errors as zero
+
+	// Compute capacity
+	capacity := locks * (conns + prepared)
+
+	status, rec := determineLockRecommendation(locks, conns, prepared)
+	check.Status = status
+	check.Message = fmt.Sprintf("locks=%d connections=%d prepared=%d capacity=%d", locks, conns, prepared, capacity)
+
+	// Human-friendly details + actionable remediation
+	detailLines := []string{fmt.Sprintf("max_locks_per_transaction: %d", locks), fmt.Sprintf("max_connections: %d", conns), fmt.Sprintf("max_prepared_transactions: %d", prepared), fmt.Sprintf("Total lock capacity: %d", capacity)}
+
+	switch rec {
+	case recIncrease:
+		detailLines = append(detailLines, "RECOMMENDATION: Increase to at least 65536 and run restore single-threaded")
+		detailLines = append(detailLines, " sudo -u postgres psql -c \"ALTER SYSTEM SET max_locks_per_transaction = 65536;\" && sudo systemctl restart postgresql")
+		check.Details = strings.Join(detailLines, "\n")
+	case recSingleThreadedOrIncrease:
+		detailLines = append(detailLines, "RECOMMENDATION: Use single-threaded restore (--jobs 1 --parallel-dbs 1) or increase locks to 65536 and still prefer single-threaded")
+		check.Details = strings.Join(detailLines, "\n")
+	case recSingleThreaded:
+		detailLines = append(detailLines, "RECOMMENDATION: Single-threaded restore is safest for very large DBs")
+		check.Details = strings.Join(detailLines, "\n")
+	}
+
+	return check
+}

internal/checks/locks_test.go

@@ -0,0 +1,55 @@
+package checks
+
+import (
+	"testing"
+)
+
+func TestDetermineLockRecommendation(t *testing.T) {
+	tests := []struct {
+		locks    int64
+		conns    int64
+		prepared int64
+		exStatus CheckStatus
+		exRec    lockRecommendation
+	}{
+		{locks: 1024, conns: 100, prepared: 0, exStatus: StatusFailed, exRec: recIncrease},
+		{locks: 4096, conns: 200, prepared: 0, exStatus: StatusWarning, exRec: recIncrease},
+		{locks: 16384, conns: 200, prepared: 0, exStatus: StatusWarning, exRec: recSingleThreadedOrIncrease},
+		{locks: 65536, conns: 200, prepared: 0, exStatus: StatusPassed, exRec: recSingleThreaded},
+	}
+
+	for _, tc := range tests {
+		st, rec := determineLockRecommendation(tc.locks, tc.conns, tc.prepared)
+		if st != tc.exStatus {
+			t.Fatalf("locks=%d: status = %v, want %v", tc.locks, st, tc.exStatus)
+		}
+		if rec != tc.exRec {
+			t.Fatalf("locks=%d: rec = %v, want %v", tc.locks, rec, tc.exRec)
+		}
+	}
+}
+
+func TestParseNumeric(t *testing.T) {
+	cases := map[string]int64{
+		"4096":           4096,
+		"  4096\n":       4096,
+		"4096 (default)": 4096,
+		"unknown":        0, // should error
+	}
+
+	for in, want := range cases {
+		v, err := parseNumeric(in)
+		if want == 0 {
+			if err == nil {
+				t.Fatalf("expected error parsing %q", in)
+			}
+			continue
+		}
+		if err != nil {
+			t.Fatalf("parseNumeric(%q) error: %v", in, err)
+		}
+		if v != want {
+			t.Fatalf("parseNumeric(%q) = %d, want %d", in, v, want)
+		}
+	}
+}

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 "[?]"
 	}
 }
 
@@ -120,6 +120,17 @@ func (p *PreflightChecker) RunAllChecks(ctx context.Context, dbName string) (*Pr
 		result.FailureCount++
 	}
 
+	// Postgres lock configuration check (provides explicit restore guidance)
+	locksCheck := p.checkPostgresLocks(ctx)
+	result.Checks = append(result.Checks, locksCheck)
+	if locksCheck.Status == StatusFailed {
+		result.AllPassed = false
+		result.FailureCount++
+	} else if locksCheck.Status == StatusWarning {
+		result.HasWarnings = true
+		result.WarningCount++
+	}
+
 	// Extract database info if connection succeeded
 	if dbCheck.Status == StatusPassed && p.db != nil {
 		version, _ := p.db.GetVersion(ctx)

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 +151,51 @@ 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
+		var reader io.Reader = NewProgressReader(file, fileSize, progress)
 
-	_, err := blockBlobClient.UploadStream(ctx, teeReader, &blockblob.UploadStreamOptions{
-		BlockSize: 4 * 1024 * 1024, // 4MB blocks
+		// Apply bandwidth throttling if configured
+		if a.config.BandwidthLimit > 0 {
+			reader = NewThrottledReader(ctx, reader, a.config.BandwidthLimit)
+		}
+
+		// 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)
@@ -195,6 +209,13 @@ func (a *AzureBackend) uploadBlocks(ctx context.Context, file *os.File, blobName
 	hash := sha256.New()
 	var totalUploaded int64
 
+	// Calculate throttle delay per byte if bandwidth limited
+	var throttleDelay time.Duration
+	if a.config.BandwidthLimit > 0 {
+		// Calculate nanoseconds per byte
+		throttleDelay = time.Duration(float64(time.Second) / float64(a.config.BandwidthLimit) * float64(blockSize))
+	}
+
 	for i := int64(0); i < numBlocks; i++ {
 		blockID := base64.StdEncoding.EncodeToString([]byte(fmt.Sprintf("block-%08d", i)))
 		blockIDs = append(blockIDs, blockID)
@@ -216,6 +237,15 @@ func (a *AzureBackend) uploadBlocks(ctx context.Context, file *os.File, blobName
 		// Update hash
 		hash.Write(blockData)
 
+		// Apply throttling between blocks if configured
+		if a.config.BandwidthLimit > 0 && i > 0 {
+			select {
+			case <-ctx.Done():
+				return ctx.Err()
+			case <-time.After(throttleDelay):
+			}
+		}
+
 		// Upload block
 		reader := bytes.NewReader(blockData)
 		_, err = blockBlobClient.StageBlock(ctx, blockID, streaming.NopCloser(reader), nil)
@@ -251,7 +281,7 @@ 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 +294,34 @@ 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 +106,59 @@ 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()
+		var reader io.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)
-	}
+		// Apply bandwidth throttling if configured
+		if g.config.BandwidthLimit > 0 {
+			reader = NewThrottledReader(ctx, reader, g.config.BandwidthLimit)
+		}
 
-	// Store checksum as metadata
-	checksum := hex.EncodeToString(hash.Sum(nil))
-	_, err = object.Update(ctx, storage.ObjectAttrsToUpdate{
-		Metadata: map[string]string{
-			"sha256": checksum,
-		},
+		// Upload with progress tracking
+		_, err = io.Copy(writer, reader)
+		if err != nil {
+			writer.Close()
+			return fmt.Errorf("failed to upload object: %w", err)
+		}
+
+		// 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 +173,34 @@ 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/interface.go

@@ -46,18 +46,19 @@ type ProgressCallback func(bytesTransferred, totalBytes int64)
 
 // Config contains common configuration for cloud backends
 type Config struct {
-	Provider    string // "s3", "minio", "azure", "gcs", "b2"
-	Bucket      string // Bucket or container name
-	Region      string // Region (for S3)
-	Endpoint    string // Custom endpoint (for MinIO, S3-compatible)
-	AccessKey   string // Access key or account ID
-	SecretKey   string // Secret key or access token
-	UseSSL      bool   // Use SSL/TLS (default: true)
-	PathStyle   bool   // Use path-style addressing (for MinIO)
-	Prefix      string // Prefix for all operations (e.g., "backups/")
-	Timeout     int    // Timeout in seconds (default: 300)
-	MaxRetries  int    // Maximum retry attempts (default: 3)
-	Concurrency int    // Upload/download concurrency (default: 5)
+	Provider       string // "s3", "minio", "azure", "gcs", "b2"
+	Bucket         string // Bucket or container name
+	Region         string // Region (for S3)
+	Endpoint       string // Custom endpoint (for MinIO, S3-compatible)
+	AccessKey      string // Access key or account ID
+	SecretKey      string // Secret key or access token
+	UseSSL         bool   // Use SSL/TLS (default: true)
+	PathStyle      bool   // Use path-style addressing (for MinIO)
+	Prefix         string // Prefix for all operations (e.g., "backups/")
+	Timeout        int    // Timeout in seconds (default: 300)
+	MaxRetries     int    // Maximum retry attempts (default: 3)
+	Concurrency    int    // Upload/download concurrency (default: 5)
+	BandwidthLimit int64  // Maximum upload/download bandwidth in bytes/sec (0 = unlimited)
 }
 
 // NewBackend creates a new cloud storage backend based on the provider

internal/cloud/retry.go

@@ -0,0 +1,258 @@
+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
+	// Note: netErr.Temporary() is deprecated since Go 1.18 - most "temporary" errors are timeouts
+	var netErr net.Error
+	if ok := isNetError(err, &netErr); ok {
+		return netErr.Timeout()
+	}
+
+	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 +124,99 @@ 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)
+		}
+
+		// Apply bandwidth throttling if configured
+		if s.config.BandwidthLimit > 0 {
+			reader = NewThrottledReader(ctx, reader, s.config.BandwidthLimit)
+		}
+
+		// 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
+		// Calculate concurrency based on bandwidth limit
+		// If limited, reduce concurrency to make throttling more effective
+		concurrency := 10
+		if s.config.BandwidthLimit > 0 {
+			// With bandwidth limiting, use fewer concurrent parts
+			concurrency = 3
+		}
 
-		// Leave parts on failure for debugging
-		u.LeavePartsOnError = false
+		// Create uploader with custom options
+		uploader := manager.NewUploader(s.client, func(u *manager.Uploader) {
+			// Part size: 10MB
+			u.PartSize = 10 * 1024 * 1024
+
+			// Adjust concurrency
+			u.Concurrency = concurrency
+
+			// 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)
+		}
+
+		// Apply bandwidth throttling if configured
+		if s.config.BandwidthLimit > 0 {
+			reader = NewThrottledReader(ctx, reader, s.config.BandwidthLimit)
+		}
+
+		// 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 +227,44 @@ 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/cloud/throttle.go

@@ -0,0 +1,251 @@
+// Package cloud provides throttled readers for bandwidth limiting during cloud uploads/downloads
+package cloud
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"strings"
+	"sync"
+	"time"
+)
+
+// ThrottledReader wraps an io.Reader and limits the read rate to a maximum bytes per second.
+// This is useful for cloud uploads where you don't want to saturate the network.
+type ThrottledReader struct {
+	reader      io.Reader
+	bytesPerSec int64         // Maximum bytes per second (0 = unlimited)
+	bytesRead   int64         // Bytes read in current window
+	windowStart time.Time     // Start of current measurement window
+	windowSize  time.Duration // Size of the measurement window
+	mu          sync.Mutex    // Protects bytesRead and windowStart
+	ctx         context.Context
+}
+
+// NewThrottledReader creates a new bandwidth-limited reader.
+// bytesPerSec is the maximum transfer rate in bytes per second.
+// Set to 0 for unlimited bandwidth.
+func NewThrottledReader(ctx context.Context, reader io.Reader, bytesPerSec int64) *ThrottledReader {
+	return &ThrottledReader{
+		reader:      reader,
+		bytesPerSec: bytesPerSec,
+		windowStart: time.Now(),
+		windowSize:  100 * time.Millisecond, // Measure in 100ms windows for smooth throttling
+		ctx:         ctx,
+	}
+}
+
+// Read implements io.Reader with bandwidth throttling
+func (t *ThrottledReader) Read(p []byte) (int, error) {
+	// No throttling if unlimited
+	if t.bytesPerSec <= 0 {
+		return t.reader.Read(p)
+	}
+
+	t.mu.Lock()
+
+	// Calculate how many bytes we're allowed in this window
+	now := time.Now()
+	elapsed := now.Sub(t.windowStart)
+
+	// If we've passed the window, reset
+	if elapsed >= t.windowSize {
+		t.bytesRead = 0
+		t.windowStart = now
+		elapsed = 0
+	}
+
+	// Calculate bytes allowed per window
+	bytesPerWindow := int64(float64(t.bytesPerSec) * t.windowSize.Seconds())
+
+	// How many bytes can we still read in this window?
+	remaining := bytesPerWindow - t.bytesRead
+	if remaining <= 0 {
+		// We've exhausted our quota for this window - wait for next window
+		sleepDuration := t.windowSize - elapsed
+		t.mu.Unlock()
+
+		select {
+		case <-t.ctx.Done():
+			return 0, t.ctx.Err()
+		case <-time.After(sleepDuration):
+		}
+
+		// Retry after sleeping
+		return t.Read(p)
+	}
+
+	// Limit read size to remaining quota
+	maxRead := len(p)
+	if int64(maxRead) > remaining {
+		maxRead = int(remaining)
+	}
+	t.mu.Unlock()
+
+	// Perform the actual read
+	n, err := t.reader.Read(p[:maxRead])
+
+	// Track bytes read
+	t.mu.Lock()
+	t.bytesRead += int64(n)
+	t.mu.Unlock()
+
+	return n, err
+}
+
+// ThrottledWriter wraps an io.Writer and limits the write rate.
+type ThrottledWriter struct {
+	writer       io.Writer
+	bytesPerSec  int64
+	bytesWritten int64
+	windowStart  time.Time
+	windowSize   time.Duration
+	mu           sync.Mutex
+	ctx          context.Context
+}
+
+// NewThrottledWriter creates a new bandwidth-limited writer.
+func NewThrottledWriter(ctx context.Context, writer io.Writer, bytesPerSec int64) *ThrottledWriter {
+	return &ThrottledWriter{
+		writer:      writer,
+		bytesPerSec: bytesPerSec,
+		windowStart: time.Now(),
+		windowSize:  100 * time.Millisecond,
+		ctx:         ctx,
+	}
+}
+
+// Write implements io.Writer with bandwidth throttling
+func (t *ThrottledWriter) Write(p []byte) (int, error) {
+	if t.bytesPerSec <= 0 {
+		return t.writer.Write(p)
+	}
+
+	totalWritten := 0
+	for totalWritten < len(p) {
+		t.mu.Lock()
+
+		now := time.Now()
+		elapsed := now.Sub(t.windowStart)
+
+		if elapsed >= t.windowSize {
+			t.bytesWritten = 0
+			t.windowStart = now
+			elapsed = 0
+		}
+
+		bytesPerWindow := int64(float64(t.bytesPerSec) * t.windowSize.Seconds())
+		remaining := bytesPerWindow - t.bytesWritten
+
+		if remaining <= 0 {
+			sleepDuration := t.windowSize - elapsed
+			t.mu.Unlock()
+
+			select {
+			case <-t.ctx.Done():
+				return totalWritten, t.ctx.Err()
+			case <-time.After(sleepDuration):
+			}
+			continue
+		}
+
+		// Calculate how much to write
+		toWrite := len(p) - totalWritten
+		if int64(toWrite) > remaining {
+			toWrite = int(remaining)
+		}
+		t.mu.Unlock()
+
+		// Write chunk
+		n, err := t.writer.Write(p[totalWritten : totalWritten+toWrite])
+		totalWritten += n
+
+		t.mu.Lock()
+		t.bytesWritten += int64(n)
+		t.mu.Unlock()
+
+		if err != nil {
+			return totalWritten, err
+		}
+	}
+
+	return totalWritten, nil
+}
+
+// ParseBandwidth parses a human-readable bandwidth string into bytes per second.
+// Supports: "10MB/s", "10MiB/s", "100KB/s", "1GB/s", "10Mbps", "100Kbps"
+// Returns 0 for empty or "unlimited"
+func ParseBandwidth(s string) (int64, error) {
+	if s == "" || s == "0" || s == "unlimited" {
+		return 0, nil
+	}
+
+	// Normalize input
+	s = strings.TrimSpace(s)
+	s = strings.ToLower(s)
+	s = strings.TrimSuffix(s, "/s")
+	s = strings.TrimSuffix(s, "ps") // For mbps/kbps
+
+	// Parse unit
+	var multiplier int64 = 1
+	var value float64
+
+	switch {
+	case strings.HasSuffix(s, "gib"):
+		multiplier = 1024 * 1024 * 1024
+		s = strings.TrimSuffix(s, "gib")
+	case strings.HasSuffix(s, "gb"):
+		multiplier = 1000 * 1000 * 1000
+		s = strings.TrimSuffix(s, "gb")
+	case strings.HasSuffix(s, "mib"):
+		multiplier = 1024 * 1024
+		s = strings.TrimSuffix(s, "mib")
+	case strings.HasSuffix(s, "mb"):
+		multiplier = 1000 * 1000
+		s = strings.TrimSuffix(s, "mb")
+	case strings.HasSuffix(s, "kib"):
+		multiplier = 1024
+		s = strings.TrimSuffix(s, "kib")
+	case strings.HasSuffix(s, "kb"):
+		multiplier = 1000
+		s = strings.TrimSuffix(s, "kb")
+	case strings.HasSuffix(s, "b"):
+		multiplier = 1
+		s = strings.TrimSuffix(s, "b")
+	default:
+		// Assume MB if no unit
+		multiplier = 1000 * 1000
+	}
+
+	// Parse numeric value
+	_, err := fmt.Sscanf(s, "%f", &value)
+	if err != nil {
+		return 0, fmt.Errorf("invalid bandwidth value: %s", s)
+	}
+
+	return int64(value * float64(multiplier)), nil
+}
+
+// FormatBandwidth returns a human-readable bandwidth string
+func FormatBandwidth(bytesPerSec int64) string {
+	if bytesPerSec <= 0 {
+		return "unlimited"
+	}
+
+	const (
+		KB = 1000
+		MB = 1000 * KB
+		GB = 1000 * MB
+	)
+
+	switch {
+	case bytesPerSec >= GB:
+		return fmt.Sprintf("%.1f GB/s", float64(bytesPerSec)/float64(GB))
+	case bytesPerSec >= MB:
+		return fmt.Sprintf("%.1f MB/s", float64(bytesPerSec)/float64(MB))
+	case bytesPerSec >= KB:
+		return fmt.Sprintf("%.1f KB/s", float64(bytesPerSec)/float64(KB))
+	default:
+		return fmt.Sprintf("%d B/s", bytesPerSec)
+	}
+}

internal/cloud/throttle_test.go

@@ -0,0 +1,175 @@
+package cloud
+
+import (
+	"bytes"
+	"context"
+	"io"
+	"testing"
+	"time"
+)
+
+func TestParseBandwidth(t *testing.T) {
+	tests := []struct {
+		input    string
+		expected int64
+		wantErr  bool
+	}{
+		// Empty/unlimited
+		{"", 0, false},
+		{"0", 0, false},
+		{"unlimited", 0, false},
+
+		// Megabytes per second (SI)
+		{"10MB/s", 10 * 1000 * 1000, false},
+		{"10mb/s", 10 * 1000 * 1000, false},
+		{"10MB", 10 * 1000 * 1000, false},
+		{"100MB/s", 100 * 1000 * 1000, false},
+
+		// Mebibytes per second (binary)
+		{"10MiB/s", 10 * 1024 * 1024, false},
+		{"10mib/s", 10 * 1024 * 1024, false},
+
+		// Kilobytes
+		{"500KB/s", 500 * 1000, false},
+		{"500KiB/s", 500 * 1024, false},
+
+		// Gigabytes
+		{"1GB/s", 1000 * 1000 * 1000, false},
+		{"1GiB/s", 1024 * 1024 * 1024, false},
+
+		// Megabits per second
+		{"100Mbps", 100 * 1000 * 1000, false},
+
+		// Plain bytes
+		{"1000B/s", 1000, false},
+
+		// No unit (assumes MB)
+		{"50", 50 * 1000 * 1000, false},
+
+		// Decimal values
+		{"1.5MB/s", 1500000, false},
+		{"0.5GB/s", 500 * 1000 * 1000, false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.input, func(t *testing.T) {
+			got, err := ParseBandwidth(tt.input)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("ParseBandwidth(%q) error = %v, wantErr %v", tt.input, err, tt.wantErr)
+				return
+			}
+			if got != tt.expected {
+				t.Errorf("ParseBandwidth(%q) = %d, want %d", tt.input, got, tt.expected)
+			}
+		})
+	}
+}
+
+func TestFormatBandwidth(t *testing.T) {
+	tests := []struct {
+		input    int64
+		expected string
+	}{
+		{0, "unlimited"},
+		{500, "500 B/s"},
+		{1500, "1.5 KB/s"},
+		{10 * 1000 * 1000, "10.0 MB/s"},
+		{1000 * 1000 * 1000, "1.0 GB/s"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.expected, func(t *testing.T) {
+			got := FormatBandwidth(tt.input)
+			if got != tt.expected {
+				t.Errorf("FormatBandwidth(%d) = %q, want %q", tt.input, got, tt.expected)
+			}
+		})
+	}
+}
+
+func TestThrottledReader_Unlimited(t *testing.T) {
+	data := []byte("hello world")
+	reader := bytes.NewReader(data)
+	ctx := context.Background()
+
+	throttled := NewThrottledReader(ctx, reader, 0) // 0 = unlimited
+
+	result, err := io.ReadAll(throttled)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if !bytes.Equal(result, data) {
+		t.Errorf("got %q, want %q", result, data)
+	}
+}
+
+func TestThrottledReader_Limited(t *testing.T) {
+	// Create 1KB of data
+	data := make([]byte, 1024)
+	for i := range data {
+		data[i] = byte(i % 256)
+	}
+
+	reader := bytes.NewReader(data)
+	ctx := context.Background()
+
+	// Limit to 512 bytes/second - should take ~2 seconds
+	throttled := NewThrottledReader(ctx, reader, 512)
+
+	start := time.Now()
+	result, err := io.ReadAll(throttled)
+	elapsed := time.Since(start)
+
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if !bytes.Equal(result, data) {
+		t.Errorf("data mismatch: got %d bytes, want %d bytes", len(result), len(data))
+	}
+
+	// Should take at least 1.5 seconds (allowing some margin)
+	if elapsed < 1500*time.Millisecond {
+		t.Errorf("read completed too fast: %v (expected ~2s for 1KB at 512B/s)", elapsed)
+	}
+}
+
+func TestThrottledReader_CancelContext(t *testing.T) {
+	data := make([]byte, 10*1024) // 10KB
+	reader := bytes.NewReader(data)
+
+	ctx, cancel := context.WithCancel(context.Background())
+
+	// Very slow rate
+	throttled := NewThrottledReader(ctx, reader, 100)
+
+	// Cancel after 100ms
+	go func() {
+		time.Sleep(100 * time.Millisecond)
+		cancel()
+	}()
+
+	_, err := io.ReadAll(throttled)
+	if err != context.Canceled {
+		t.Errorf("expected context.Canceled, got %v", err)
+	}
+}
+
+func TestThrottledWriter_Unlimited(t *testing.T) {
+	ctx := context.Background()
+	var buf bytes.Buffer
+
+	throttled := NewThrottledWriter(ctx, &buf, 0) // 0 = unlimited
+
+	data := []byte("hello world")
+	n, err := throttled.Write(data)
+
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if n != len(data) {
+		t.Errorf("wrote %d bytes, want %d", n, len(data))
+	}
+	if !bytes.Equal(buf.Bytes(), data) {
+		t.Errorf("got %q, want %q", buf.Bytes(), data)
+	}
+}

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()
@@ -516,38 +606,7 @@ func getDefaultBackupDir() string {
 		return "/var/lib/pgsql/pg_backups"
 	}
 
-	return "/tmp/db_backups"
-}
-
-// CPU-related helper functions
-func getDefaultJobs(cpuInfo *cpu.CPUInfo) int {
-	if cpuInfo == nil {
-		return 1
-	}
-	// Default to logical cores for restore operations
-	jobs := cpuInfo.LogicalCores
-	if jobs < 1 {
-		jobs = 1
-	}
-	if jobs > 16 {
-		jobs = 16 // Safety limit
-	}
-	return jobs
-}
-
-func getDefaultDumpJobs(cpuInfo *cpu.CPUInfo) int {
-	if cpuInfo == nil {
-		return 1
-	}
-	// Use physical cores for dump operations (CPU intensive)
-	jobs := cpuInfo.PhysicalCores
-	if jobs < 1 {
-		jobs = 1
-	}
-	if jobs > 8 {
-		jobs = 8 // Conservative limit for dumps
-	}
-	return jobs
+	return filepath.Join(os.TempDir(), "db_backups")
 }
 
 func getDefaultMaxCores(cpuInfo *cpu.CPUInfo) int {