Alexander Renz
9d52f43d29
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PERFORMANCE BENCHMARKS (1M rows, 205 MB): - Backup: 4.0s native vs 14.1s pg_dump = 3.5x FASTER - Restore: 8.7s native vs 9.9s pg_restore = 13% FASTER - Throughput: 250K rows/sec backup, 115K rows/sec restore CONNECTION POOL OPTIMIZATIONS: - MinConns = Parallel (warm pool, no connection setup delay) - MaxConns = Parallel + 2 (headroom for metadata queries) - Health checks every 1 minute - Max lifetime 1 hour, idle timeout 5 minutes RESTORE SESSION OPTIMIZATIONS: - synchronous_commit = off (async WAL commits) - work_mem = 256MB (faster sorts and hashes) - maintenance_work_mem = 512MB (faster index builds) - session_replication_role = replica (bypass triggers/FK checks) Files changed: - internal/engine/native/postgresql.go: Pool optimization - internal/engine/native/restore.go: Session performance settings - main.go: v5.5.3 → v5.6.0 - CHANGELOG.md: Performance benchmark results
2117 lines
95 KiB
Markdown
2117 lines
95 KiB
Markdown
# Changelog
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All notable changes to dbbackup will be documented in this file.
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The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
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and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
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## [5.6.0] - 2026-02-02
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### Performance Optimizations 🚀
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- **Native Engine Outperforms pg_dump/pg_restore!**
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- Backup: **3.5x faster** than pg_dump (250K vs 71K rows/sec)
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- Restore: **13% faster** than pg_restore (115K vs 101K rows/sec)
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- Tested with 1M row database (205 MB)
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### Enhanced
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- **Connection Pool Optimizations**
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- Optimized min/max connections for warm pool
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- Added health check configuration
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- Connection lifetime and idle timeout tuning
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- **Restore Session Optimizations**
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- `synchronous_commit = off` for async commits
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- `work_mem = 256MB` for faster sorts
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- `maintenance_work_mem = 512MB` for faster index builds
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- `session_replication_role = replica` to bypass triggers/FK checks
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- **TUI Improvements**
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- Fixed separator line placement in Cluster Restore Progress view
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### Technical Details
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- `internal/engine/native/postgresql.go`: Pool optimization with min/max connections
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- `internal/engine/native/restore.go`: Session-level performance settings
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## [5.5.3] - 2026-02-02
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### Fixed
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- Fixed TUI separator line to appear under title instead of after it
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## [5.5.2] - 2026-02-02
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### Fixed
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- **CRITICAL: Native Engine Array Type Support**
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- Fixed: Array columns (e.g., `INTEGER[]`, `TEXT[]`) were exported as just `ARRAY`
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- Now properly exports array types using PostgreSQL's `udt_name` from information_schema
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- Supports all common array types: integer[], text[], bigint[], boolean[], bytea[], json[], jsonb[], uuid[], timestamp[], etc.
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### Verified Working
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- **Full BLOB/Binary Data Round-Trip Validated**
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- BYTEA columns with NULL bytes (0x00) preserved correctly
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- Unicode data (emoji 🚀, Chinese 中文, Arabic العربية) preserved
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- JSON/JSONB with Unicode preserved
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- Integer and text arrays restored correctly
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- 10,002 row test with checksum verification: PASS
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### Technical Details
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- `internal/engine/native/postgresql.go`:
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- Added `udt_name` to column query
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- Updated `formatDataType()` to convert PostgreSQL internal array names (_int4, _text, etc.) to SQL syntax
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## [5.5.1] - 2026-02-02
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### Fixed
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- **CRITICAL: Native Engine Restore Fixed** - Restore now connects to target database correctly
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- Previously connected to source database, causing data to be written to wrong database
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- Now creates engine with target database for proper restore
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- **CRITICAL: Native Engine Backup - Sequences Now Exported**
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- Fixed: Sequences were silently skipped due to type mismatch in PostgreSQL query
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- Cast `information_schema.sequences` string values to bigint
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- Sequences now properly created BEFORE tables that reference them
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- **CRITICAL: Native Engine COPY Handling**
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- Fixed: COPY FROM stdin data blocks now properly parsed and executed
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- Replaced simple line-by-line SQL execution with proper COPY protocol handling
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- Uses pgx `CopyFrom` for bulk data loading (100k+ rows/sec)
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- **Tool Verification Bypass for Native Mode**
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- Skip pg_restore/psql check when `--native` flag is used
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- Enables truly zero-dependency deployment
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- **Panic Fix: Slice Bounds Error**
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- Fixed runtime panic when logging short SQL statements during errors
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### Technical Details
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- `internal/engine/native/manager.go`: Create new engine with target database for restore
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- `internal/engine/native/postgresql.go`: Fixed Restore() to handle COPY protocol, fixed getSequenceCreateSQL() type casting
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- `cmd/restore.go`: Skip VerifyTools when cfg.UseNativeEngine is true
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- `internal/tui/restore_preview.go`: Show "Native engine mode" instead of tool check
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## [5.5.0] - 2026-02-02
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### Added
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- **🚀 Native Engine Support for Cluster Backup/Restore**
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- NEW: `--native` flag for cluster backup creates SQL format (.sql.gz) using pure Go
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- NEW: `--native` flag for cluster restore uses pure Go engine for .sql.gz files
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- Zero external tool dependencies when using native mode
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- Single-binary deployment now possible without pg_dump/pg_restore installed
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- **Native Cluster Backup** (`dbbackup backup cluster --native`)
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- Creates .sql.gz files instead of .dump files
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- Uses pgx wire protocol for data export
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- Parallel gzip compression with pgzip
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- Automatic fallback to pg_dump if `--fallback-tools` is set
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- **Native Cluster Restore** (`dbbackup restore cluster --native --confirm`)
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- Restores .sql.gz files using pure Go (pgx CopyFrom)
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- No psql or pg_restore required
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- Automatic detection: uses native for .sql.gz, pg_restore for .dump
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- Fallback support with `--fallback-tools`
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### Updated
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- **NATIVE_ENGINE_SUMMARY.md** - Complete rewrite with accurate documentation
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- Native engine matrix now shows full cluster support with `--native` flag
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### Technical Details
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- `internal/backup/engine.go`: Added native engine path in BackupCluster()
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- `internal/restore/engine.go`: Added `restoreWithNativeEngine()` function
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- `cmd/backup.go`: Added `--native` and `--fallback-tools` flags to cluster command
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- `cmd/restore.go`: Added `--native` and `--fallback-tools` flags with PreRunE handlers
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- Version bumped to 5.5.0 (new feature release)
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## [5.4.6] - 2026-02-02
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### Fixed
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- **CRITICAL: Progress Tracking for Large Database Restores**
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- Fixed "no progress" issue where TUI showed 0% for hours during large single-DB restore
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- Root cause: Progress only updated after database *completed*, not during restore
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- Heartbeat now reports estimated progress every 5 seconds (was 15s, text-only)
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- Time-based progress estimation: ~10MB/s throughput assumption
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- Progress capped at 95% until actual completion (prevents jumping to 100% too early)
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- **Improved TUI Feedback During Long Restores**
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- Shows spinner + elapsed time when byte-level progress not available
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- Displays "pg_restore in progress (progress updates every 5s)" message
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- Better visual feedback that restore is actively running
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### Technical Details
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- `reportDatabaseProgressByBytes()` now called during restore, not just after completion
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- Heartbeat interval reduced from 15s to 5s for more responsive feedback
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- TUI gracefully handles `CurrentDBTotal=0` case with activity indicator
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## [5.4.5] - 2026-02-02
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### Fixed
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- **Accurate Disk Space Estimation for Cluster Archives**
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- Fixed WARNING showing 836GB for 119GB archive - was using wrong compression multiplier
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- Cluster archives (.tar.gz) contain pre-compressed .dump files → now uses 1.2x multiplier
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- Single SQL files (.sql.gz) still use 5x multiplier (was 7x, slightly optimized)
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- New `CheckSystemMemoryWithType(size, isClusterArchive)` method for accurate estimates
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- 119GB cluster archive now correctly estimates ~143GB instead of ~833GB
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## [5.4.4] - 2026-02-02
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### Fixed
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- **TUI Header Separator Fix** - Capped separator length at 40 chars to prevent line overflow on wide terminals
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## [5.4.3] - 2026-02-02
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### Fixed
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- **Bulletproof SIGINT Handling** - Zero zombie processes guaranteed
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- All external commands now use `cleanup.SafeCommand()` with process group isolation
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- `KillCommandGroup()` sends signals to entire process group (-pgid)
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- No more orphaned pg_restore/pg_dump/psql/pigz processes on Ctrl+C
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- 16 files updated with proper signal handling
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- **Eliminated External gzip Process** - The `zgrep` command was spawning `gzip -cdfq`
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- Replaced with in-process pgzip decompression in `preflight.go`
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- `estimateBlobsInSQL()` now uses pure Go pgzip.NewReader
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- Zero external gzip processes during restore
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## [5.1.22] - 2026-02-01
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### Added
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- **Restore Metrics for Prometheus/Grafana** - Now you can monitor restore performance!
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- `dbbackup_restore_total{status="success|failure"}` - Total restore count
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- `dbbackup_restore_duration_seconds{profile, parallel_jobs}` - Restore duration
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- `dbbackup_restore_parallel_jobs{profile}` - Jobs used (shows if turbo=8 is working!)
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- `dbbackup_restore_size_bytes` - Restored archive size
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- `dbbackup_restore_last_timestamp` - Last restore time
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- **Grafana Dashboard: Restore Operations Section**
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- Total Successful/Failed Restores
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- Parallel Jobs Used (RED if 1=SLOW, GREEN if 8=TURBO)
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- Last Restore Duration with thresholds
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- Restore Duration Over Time graph
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- Parallel Jobs per Restore bar chart
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- **Restore Engine Metrics Recording**
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- All single database and cluster restores now record metrics
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- Stored in `~/.dbbackup/restore_metrics.json`
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- Prometheus exporter reads and exposes these metrics
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## [5.1.21] - 2026-02-01
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### Fixed
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- **Complete verification of profile system** - Full code path analysis confirms TURBO works:
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- CLI: `--profile turbo` → `config.ApplyProfile()` → `cfg.Jobs=8` → `pg_restore --jobs=8`
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- TUI: Settings → `ApplyResourceProfile()` → `cpu.GetProfileByName("turbo")` → `cfg.Jobs=8`
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- Updated help text for `restore cluster` command to show turbo example
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- Updated flag description to list all profiles: conservative, balanced, turbo, max-performance
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## [5.1.20] - 2026-02-01
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### Fixed
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- **CRITICAL: "turbo" and "max-performance" profiles were NOT recognized in restore command!**
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- `profile.go` only had: conservative, balanced, aggressive, potato
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- "turbo" profile returned ERROR "unknown profile" and SILENTLY fell back to "balanced"
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- "balanced" profile has `Jobs: 0` which became `Jobs: 1` after default fallback
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- **Result: --profile turbo was IGNORED and restore ran with --jobs=1 (single-threaded)**
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- Added turbo profile: Jobs=8, ParallelDBs=2
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- Added max-performance profile: Jobs=8, ParallelDBs=4
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- NOW `--profile turbo` correctly uses `pg_restore --jobs=8`
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## [5.1.19] - 2026-02-01
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### Fixed
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- **CRITICAL: pg_restore --jobs flag was NEVER added when Parallel <= 1** - Root cause finally found and fixed:
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- In `BuildRestoreCommand()` the condition was `if options.Parallel > 1` which meant `--jobs` flag was NEVER added when Parallel was 1 or less
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- Changed to `if options.Parallel > 0` so `--jobs` is ALWAYS set when Parallel > 0
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- This was THE root cause why restores took 12+ hours instead of ~4 hours
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- Now `pg_restore --jobs=8` is correctly generated for turbo profile
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## [5.1.18] - 2026-02-01
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### Fixed
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- **CRITICAL: Profile Jobs setting now ALWAYS respected** - Removed multiple code paths that were overriding user's profile Jobs setting:
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- `restoreSection()` for phased restores now uses `--jobs` flag (was missing entirely!)
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- Removed auto-fallback that forced `Jobs=1` when PostgreSQL locks couldn't be boosted
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- Removed auto-fallback that forced `Jobs=1` on low memory detection
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- User's profile choice (turbo, performance, etc.) is now respected - only warnings are logged
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- This was causing restores to take 9+ hours instead of ~4 hours with turbo profile
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## [5.1.17] - 2026-02-01
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### Fixed
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- **TUI Settings now persist to disk** - Settings changes in TUI are now saved to `.dbbackup.conf` file, not just in-memory
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- **Native Engine is now the default** - Pure Go engine (no external tools required) is now the default instead of external tools mode
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## [5.1.16] - 2026-02-01
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### Fixed
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- **Critical: pg_restore parallel jobs now actually used** - Fixed bug where `--jobs` flag and profile `Jobs` setting were completely ignored for `pg_restore`. The code had hardcoded `Parallel: 1` instead of using `e.cfg.Jobs`, causing all restores to run single-threaded regardless of configuration. This fix enables 3-4x faster restores matching native `pg_restore -j8` performance.
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- Affected functions: `restorePostgreSQLDump()`, `restorePostgreSQLDumpWithOwnership()`
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- Now logs `parallel_jobs` value for visibility
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- Turbo profile with `Jobs: 8` now correctly passes `--jobs=8` to pg_restore
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## [5.1.15] - 2026-01-31
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### Fixed
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- Fixed go vet warning for Printf directive in shell command output (CI fix)
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## [5.1.14] - 2026-01-31
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### Added - Quick Win Features
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- **Cross-Region Sync** (`cloud cross-region-sync`)
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- Sync backups between cloud regions for disaster recovery
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- Support for S3, MinIO, Azure Blob, Google Cloud Storage
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- Parallel transfers with configurable concurrency
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- Dry-run mode to preview sync plan
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- Filter by database name or backup age
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- Delete orphaned files with `--delete` flag
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- **Retention Policy Simulator** (`retention-simulator`)
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- Preview retention policy effects without deleting backups
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- Simulate simple age-based and GFS retention strategies
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- Compare multiple retention periods side-by-side (7, 14, 30, 60, 90 days)
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- Calculate space savings and backup counts
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- Analyze backup frequency and provide recommendations
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- **Catalog Dashboard** (`catalog dashboard`)
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- Interactive TUI for browsing backup catalog
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- Sort by date, size, database, or type
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- Filter backups with search
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- Detailed view with backup metadata
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- Keyboard navigation (vim-style keys supported)
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- **Parallel Restore Analysis** (`parallel-restore`)
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- Analyze system for optimal parallel restore settings
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- Benchmark disk I/O performance
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- Simulate restore with different parallelism levels
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- Provide recommendations based on CPU and memory
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- **Progress Webhooks** (`progress-webhooks`)
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- Configure webhook notifications for backup/restore progress
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- Periodic progress updates during long operations
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- Test mode to verify webhook connectivity
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- Environment variable configuration (DBBACKUP_WEBHOOK_URL)
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- **Encryption Key Rotation** (`encryption rotate`)
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- Generate new encryption keys (128, 192, 256-bit)
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- Save keys to file with secure permissions (0600)
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- Support for base64 and hex output formats
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### Changed
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- Updated version to 5.1.14
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- Removed development files from repository (.dbbackup.conf, TODO_SESSION.md, test-backups/)
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## [5.1.0] - 2026-01-30
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### Fixed
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- **CRITICAL**: Fixed PostgreSQL native engine connection pooling issues that caused \"conn busy\" errors
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- **CRITICAL**: Fixed PostgreSQL table data export - now properly captures all table schemas and data using COPY protocol
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- **CRITICAL**: Fixed PostgreSQL native engine to use connection pool for all metadata queries (getTables, getViews, getSequences, getFunctions)
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- Fixed gzip compression implementation in native backup CLI integration
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- Fixed exitcode package syntax errors causing CI failures
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### Added
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- Enhanced PostgreSQL native engine with proper connection pool management
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- Complete table data export using COPY TO STDOUT protocol
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- Comprehensive testing with complex data types (JSONB, arrays, foreign keys)
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- Production-ready native engine performance and stability
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### Changed
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- All PostgreSQL metadata queries now use connection pooling instead of shared connection
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- Improved error handling and debugging output for native engines
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- Enhanced backup file structure with proper SQL headers and footers
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## [5.0.1] - 2026-01-30
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### Fixed - Quality Improvements
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- **PostgreSQL COPY Format**: Fixed format mismatch - now uses native TEXT format compatible with `COPY FROM stdin`
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- **MySQL Restore Security**: Fixed potential SQL injection in restore by properly escaping backticks in database names
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- **MySQL 8.0.22+ Compatibility**: Added fallback for `SHOW BINARY LOG STATUS` (MySQL 8.0.22+) with graceful fallback to `SHOW MASTER STATUS` for older versions
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- **Duration Calculation**: Fixed backup duration tracking to accurately capture elapsed time
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---
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## [5.0.0] - 2026-01-30
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### MAJOR RELEASE - Native Engine Implementation
|
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|
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**BREAKTHROUGH: We Built Our Own Database Engines**
|
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|
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**This is a really big step.** We're no longer calling external tools - **we built our own machines**.
|
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|
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dbbackup v5.0.0 represents a **fundamental architectural revolution**. We've eliminated ALL external tool dependencies by implementing pure Go database engines that speak directly to PostgreSQL and MySQL using their native wire protocols. No more pg_dump. No more mysqldump. No more shelling out. **Our code, our engines, our control.**
|
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|
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### Added - Native Database Engines
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|
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- **Native PostgreSQL Engine (`internal/engine/native/postgresql.go`)**
|
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- Pure Go implementation using pgx/v5 driver
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- Direct PostgreSQL wire protocol communication
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- Native SQL generation and COPY data export
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- Advanced data type handling (arrays, JSON, binary, timestamps)
|
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- Proper SQL escaping and PostgreSQL-specific formatting
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|
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- **Native MySQL Engine (`internal/engine/native/mysql.go`)**
|
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- Pure Go implementation using go-sql-driver/mysql
|
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- Direct MySQL protocol communication
|
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- Batch INSERT generation with advanced data types
|
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- Binary data support with hex encoding
|
||
- MySQL-specific escape sequences and formatting
|
||
|
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- **Advanced Engine Framework (`internal/engine/native/advanced.go`)**
|
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- Extensible architecture for multiple backup formats
|
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- Compression support (Gzip, Zstd, LZ4)
|
||
- Configurable batch processing (1K-10K rows per batch)
|
||
- Performance optimization settings
|
||
- Future-ready for custom formats and parallel processing
|
||
|
||
- **Engine Manager (`internal/engine/native/manager.go`)**
|
||
- Pluggable architecture for engine selection
|
||
- Configuration-based engine initialization
|
||
- Unified backup orchestration across all engines
|
||
- Automatic fallback mechanisms
|
||
|
||
- **Restore Framework (`internal/engine/native/restore.go`)**
|
||
- Native restore engine architecture (basic implementation)
|
||
- Transaction control and error handling
|
||
- Progress tracking and status reporting
|
||
- Foundation for complete restore implementation
|
||
|
||
### Added - CLI Integration
|
||
|
||
- **New Command Line Flags**
|
||
- `--native`: Use pure Go native engines (no external tools)
|
||
- `--fallback-tools`: Fallback to external tools if native engine fails
|
||
- `--native-debug`: Enable detailed native engine debugging
|
||
|
||
### Added - Advanced Features
|
||
|
||
- **Production-Ready Data Handling**
|
||
- Proper handling of complex PostgreSQL types (arrays, JSON, custom types)
|
||
- Advanced MySQL binary data encoding and type detection
|
||
- NULL value handling across all data types
|
||
- Timestamp formatting with microsecond precision
|
||
- Memory-efficient streaming for large datasets
|
||
|
||
- **Performance Optimizations**
|
||
- Configurable batch processing for optimal throughput
|
||
- I/O streaming with buffered writers
|
||
- Connection pooling integration
|
||
- Memory usage optimization for large tables
|
||
|
||
### Changed - Core Architecture
|
||
|
||
- **Zero External Dependencies**: No longer requires pg_dump, mysqldump, pg_restore, mysql, psql, or mysqlbinlog
|
||
- **Native Protocol Communication**: Direct database protocol usage instead of shelling out to external tools
|
||
- **Pure Go Implementation**: All backup and restore operations now implemented in Go
|
||
- **Backward Compatibility**: All existing configurations and workflows continue to work
|
||
|
||
### Technical Impact
|
||
|
||
- **Build Size**: Reduced dependencies and smaller binaries
|
||
- **Performance**: Eliminated process spawning overhead and improved data streaming
|
||
- **Reliability**: Removed external tool version compatibility issues
|
||
- **Maintenance**: Simplified deployment with single binary distribution
|
||
- **Security**: Eliminated attack vectors from external tool dependencies
|
||
|
||
### Migration Guide
|
||
|
||
Existing users can continue using dbbackup exactly as before - all existing configurations work unchanged. The new native engines are opt-in via the `--native` flag.
|
||
|
||
**Recommended**: Test native engines with `--native --native-debug` flags, then switch to native-only operation for improved performance and reliability.
|
||
|
||
---
|
||
|
||
## [4.2.9] - 2026-01-30
|
||
|
||
### Added - MEDIUM Priority Features
|
||
|
||
- **#11: Enhanced Error Diagnostics with System Context (MEDIUM priority)**
|
||
- Automatic environmental context collection on errors
|
||
- Real-time system diagnostics: disk space, memory, file descriptors
|
||
- PostgreSQL diagnostics: connections, locks, shared memory, version
|
||
- Smart root cause analysis based on error + environment
|
||
- Context-specific recommendations (e.g., "Disk 95% full" → cleanup commands)
|
||
- Comprehensive diagnostics report with actionable fixes
|
||
- **Problem**: Errors showed symptoms but not environmental causes
|
||
- **Solution**: Diagnose system state + error pattern → root cause + fix
|
||
|
||
**Diagnostic Report Includes:**
|
||
- Disk space usage and available capacity
|
||
- Memory usage and pressure indicators
|
||
- File descriptor utilization (Linux/Unix)
|
||
- PostgreSQL connection pool status
|
||
- Lock table capacity calculations
|
||
- Version compatibility checks
|
||
- Contextual recommendations based on actual system state
|
||
|
||
**Example Diagnostics:**
|
||
```
|
||
═══════════════════════════════════════════════════════════
|
||
DBBACKUP ERROR DIAGNOSTICS REPORT
|
||
═══════════════════════════════════════════════════════════
|
||
|
||
Error Type: CRITICAL
|
||
Category: locks
|
||
Severity: 2/3
|
||
|
||
Message:
|
||
out of shared memory: max_locks_per_transaction exceeded
|
||
|
||
Root Cause:
|
||
Lock table capacity too low (32,000 total locks). Likely cause:
|
||
max_locks_per_transaction (128) too low for this database size
|
||
|
||
System Context:
|
||
Disk Space: 45.3 GB / 100.0 GB (45.3% used)
|
||
Memory: 3.2 GB / 8.0 GB (40.0% used)
|
||
File Descriptors: 234 / 4096
|
||
|
||
Database Context:
|
||
Version: PostgreSQL 14.10
|
||
Connections: 15 / 100
|
||
Max Locks: 128 per transaction
|
||
Total Lock Capacity: ~12,800
|
||
|
||
Recommendations:
|
||
Current lock capacity: 12,800 locks (max_locks_per_transaction × max_connections)
|
||
WARNING: max_locks_per_transaction is low (128)
|
||
• Increase: ALTER SYSTEM SET max_locks_per_transaction = 4096;
|
||
• Then restart PostgreSQL: sudo systemctl restart postgresql
|
||
|
||
Suggested Action:
|
||
Fix: ALTER SYSTEM SET max_locks_per_transaction = 4096; then
|
||
RESTART PostgreSQL
|
||
```
|
||
|
||
**Functions:**
|
||
- `GatherErrorContext()` - Collects system + database metrics
|
||
- `DiagnoseError()` - Full error analysis with environmental context
|
||
- `FormatDiagnosticsReport()` - Human-readable report generation
|
||
- `generateContextualRecommendations()` - Smart recommendations based on state
|
||
- `analyzeRootCause()` - Pattern matching for root cause identification
|
||
|
||
**Integration:**
|
||
- Available for all backup/restore operations
|
||
- Automatic context collection on critical errors
|
||
- Can be manually triggered for troubleshooting
|
||
- Export as JSON for automated monitoring
|
||
|
||
## [4.2.8] - 2026-01-30
|
||
|
||
### Added - MEDIUM Priority Features
|
||
|
||
- **#10: WAL Archive Statistics (MEDIUM priority)**
|
||
- `dbbackup pitr status` now shows comprehensive WAL archive statistics
|
||
- Displays: total files, total size, compression rate, oldest/newest WAL, time span
|
||
- Auto-detects archive directory from PostgreSQL `archive_command`
|
||
- Supports compressed (.gz, .zst, .lz4) and encrypted (.enc) WAL files
|
||
- **Problem**: No visibility into WAL archive health and growth
|
||
- **Solution**: Real-time stats in PITR status command, helps identify retention issues
|
||
|
||
**Example Output:**
|
||
```
|
||
WAL Archive Statistics:
|
||
======================================================
|
||
Total Files: 1,234
|
||
Total Size: 19.8 GB
|
||
Average Size: 16.4 MB
|
||
Compressed: 1,234 files (68.5% saved)
|
||
Encrypted: 1,234 files
|
||
|
||
Oldest WAL: 000000010000000000000042
|
||
Created: 2026-01-15 08:30:00
|
||
Newest WAL: 000000010000000000004D2F
|
||
Created: 2026-01-30 17:45:30
|
||
Time Span: 15.4 days
|
||
```
|
||
|
||
**Files Modified:**
|
||
- `internal/wal/archiver.go`: Extended `ArchiveStats` struct with detailed fields
|
||
- `internal/wal/archiver.go`: Added `GetArchiveStats()`, `FormatArchiveStats()` functions
|
||
- `cmd/pitr.go`: Integrated stats into `pitr status` command
|
||
- `cmd/pitr.go`: Added `extractArchiveDirFromCommand()` helper
|
||
|
||
## [4.2.7] - 2026-01-30
|
||
|
||
### Added - HIGH Priority Features
|
||
|
||
- **#9: Auto Backup Verification (HIGH priority)**
|
||
- Automatic integrity verification after every backup (default: ON)
|
||
- Single DB backups: Full SHA-256 checksum verification
|
||
- Cluster backups: Quick tar.gz structure validation (header scan)
|
||
- Prevents corrupted backups from being stored undetected
|
||
- Can disable with `--no-verify` flag or `VERIFY_AFTER_BACKUP=false`
|
||
- Performance overhead: +5-10% for single DB, +1-2% for cluster
|
||
- **Problem**: Backups not verified until restore time (too late to fix)
|
||
- **Solution**: Immediate feedback on backup integrity, fail-fast on corruption
|
||
|
||
### Fixed - Performance & Reliability
|
||
|
||
- **#5: TUI Memory Leak in Long Operations (HIGH priority)**
|
||
- Throttled progress speed samples to max 10 updates/second (100ms intervals)
|
||
- Fixed memory bloat during large cluster restores (100+ databases)
|
||
- Reduced memory usage by ~90% in long-running operations
|
||
- No visual degradation (10 FPS is smooth enough for progress display)
|
||
- Applied to: `internal/tui/restore_exec.go`, `internal/tui/detailed_progress.go`
|
||
- **Problem**: Progress callbacks fired on every 4KB buffer read = millions of allocations
|
||
- **Solution**: Throttle sample collection to prevent unbounded array growth
|
||
|
||
## [4.2.5] - 2026-01-30
|
||
## [4.2.6] - 2026-01-30
|
||
|
||
### Security - Critical Fixes
|
||
|
||
- **SEC#1: Password exposure in process list**
|
||
- Removed `--password` CLI flag to prevent passwords appearing in `ps aux`
|
||
- Use environment variables (`PGPASSWORD`, `MYSQL_PWD`) or config file instead
|
||
- Enhanced security for multi-user systems and shared environments
|
||
|
||
- **SEC#2: World-readable backup files**
|
||
- All backup files now created with 0600 permissions (owner-only read/write)
|
||
- Prevents unauthorized users from reading sensitive database dumps
|
||
- Affects: `internal/backup/engine.go`, `incremental_mysql.go`, `incremental_tar.go`
|
||
- Critical for GDPR, HIPAA, and PCI-DSS compliance
|
||
|
||
- **#4: Directory race condition in parallel backups**
|
||
- Replaced `os.MkdirAll()` with `fs.SecureMkdirAll()` that handles EEXIST gracefully
|
||
- Prevents "file exists" errors when multiple backup processes create directories
|
||
- Affects: All backup directory creation paths
|
||
|
||
### Added
|
||
|
||
- **internal/fs/secure.go**: New secure file operations utilities
|
||
- `SecureMkdirAll()`: Race-condition-safe directory creation
|
||
- `SecureCreate()`: File creation with 0600 permissions
|
||
- `SecureMkdirTemp()`: Temporary directories with 0700 permissions
|
||
- `CheckWriteAccess()`: Proactive detection of read-only filesystems
|
||
|
||
- **internal/exitcode/codes.go**: BSD-style exit codes for automation
|
||
- Standard exit codes for scripting and monitoring systems
|
||
- Improves integration with systemd, cron, and orchestration tools
|
||
|
||
### Fixed
|
||
|
||
- Fixed multiple file creation calls using insecure 0644 permissions
|
||
- Fixed race conditions in backup directory creation during parallel operations
|
||
- Improved security posture for multi-user and shared environments
|
||
|
||
|
||
### Fixed - TUI Cluster Restore Double-Extraction
|
||
|
||
- **TUI cluster restore performance optimization**
|
||
- Eliminated double-extraction: cluster archives were scanned twice (once for DB list, once for restore)
|
||
- `internal/restore/extract.go`: Added `ListDatabasesFromExtractedDir()` to list databases from disk instead of tar scan
|
||
- `internal/tui/cluster_db_selector.go`: Now pre-extracts cluster once, lists from extracted directory
|
||
- `internal/tui/archive_browser.go`: Added `ExtractedDir` field to `ArchiveInfo` for passing pre-extracted path
|
||
- `internal/tui/restore_exec.go`: Reuses pre-extracted directory when available
|
||
- **Performance improvement:** 50GB cluster archive now processes once instead of twice (saves 5-15 minutes)
|
||
- Automatic cleanup of extracted directory after restore completes or fails
|
||
|
||
## [4.2.4] - 2026-01-30
|
||
|
||
### Fixed - Comprehensive Ctrl+C Support Across All Operations
|
||
|
||
- **System-wide context-aware file operations**
|
||
- All long-running I/O operations now respond to Ctrl+C
|
||
- Added `CopyWithContext()` to cloud package for S3/Azure/GCS transfers
|
||
- Partial files are cleaned up on cancellation
|
||
|
||
- **Fixed components:**
|
||
- `internal/restore/extract.go`: Single DB extraction from cluster
|
||
- `internal/wal/compression.go`: WAL file compression/decompression
|
||
- `internal/restore/engine.go`: SQL restore streaming (2 paths)
|
||
- `internal/backup/engine.go`: pg_dump/mysqldump streaming (3 paths)
|
||
- `internal/cloud/s3.go`: S3 download interruption
|
||
- `internal/cloud/azure.go`: Azure Blob download interruption
|
||
- `internal/cloud/gcs.go`: GCS upload/download interruption
|
||
- `internal/drill/engine.go`: DR drill decompression
|
||
|
||
## [4.2.3] - 2026-01-30
|
||
|
||
### Fixed - Cluster Restore Performance & Ctrl+C Handling
|
||
|
||
- **Removed redundant gzip validation in cluster restore**
|
||
- `ValidateAndExtractCluster()` no longer calls `ValidateArchive()` internally
|
||
- Previously validation happened 2x before extraction (caller + internal)
|
||
- Eliminates duplicate gzip header reads on large archives
|
||
- Reduces cluster restore startup time
|
||
|
||
- **Fixed Ctrl+C not working during extraction**
|
||
- Added `CopyWithContext()` function for context-aware file copying
|
||
- Extraction now checks for cancellation every 1MB of data
|
||
- Ctrl+C immediately interrupts large file extractions
|
||
- Partial files are cleaned up on cancellation
|
||
- Applies to both `ExtractTarGzParallel` and `extractArchiveWithProgress`
|
||
|
||
## [4.2.2] - 2026-01-30
|
||
|
||
### Fixed - Complete pgzip Migration (Backup Side)
|
||
|
||
- **Removed ALL external gzip/pigz calls from backup engine**
|
||
- `internal/backup/engine.go`: `executeWithStreamingCompression` now uses pgzip
|
||
- `internal/parallel/engine.go`: Fixed stub gzipWriter to use pgzip
|
||
- No more gzip/pigz processes visible in htop during backup
|
||
- Uses klauspost/pgzip for parallel multi-core compression
|
||
|
||
- **Complete pgzip migration status**:
|
||
- Backup: All compression uses in-process pgzip
|
||
- Restore: All decompression uses in-process pgzip
|
||
- Drill: Decompress on host with pgzip before Docker copy
|
||
- WARNING: PITR only: PostgreSQL's `restore_command` must remain shell (PostgreSQL limitation)
|
||
|
||
## [4.2.1] - 2026-01-30
|
||
|
||
### Fixed - Complete pgzip Migration
|
||
|
||
- **Removed ALL external gunzip/gzip calls** - Systematic audit and fix
|
||
- `internal/restore/engine.go`: SQL restores now use pgzip stream → psql/mysql stdin
|
||
- `internal/drill/engine.go`: Decompress on host with pgzip before Docker copy
|
||
- No more gzip/gunzip/pigz processes visible in htop during restore
|
||
- Uses klauspost/pgzip for parallel multi-core decompression
|
||
|
||
- **PostgreSQL PITR exception** - `restore_command` in recovery config must remain shell
|
||
- PostgreSQL itself runs this command to fetch WAL files
|
||
- Cannot be replaced with Go code (PostgreSQL limitation)
|
||
|
||
## [4.2.0] - 2026-01-30
|
||
|
||
### Added - Quick Wins Release
|
||
|
||
- **`dbbackup health` command** - Comprehensive backup infrastructure health check
|
||
- 10 automated health checks: config, DB connectivity, backup dir, catalog, freshness, gaps, verification, file integrity, orphans, disk space
|
||
- Exit codes for automation: 0=healthy, 1=warning, 2=critical
|
||
- JSON output for monitoring integration (Prometheus, Nagios, etc.)
|
||
- Auto-generates actionable recommendations
|
||
- Custom backup interval for gap detection: `--interval 12h`
|
||
- Skip database check for offline mode: `--skip-db`
|
||
- Example: `dbbackup health --format json`
|
||
|
||
- **TUI System Health Check** - Interactive health monitoring
|
||
- Accessible via Tools → System Health Check
|
||
- Runs all 10 checks asynchronously with progress spinner
|
||
- Color-coded results: green=healthy, yellow=warning, red=critical
|
||
- Displays recommendations for any issues found
|
||
|
||
- **`dbbackup restore preview` command** - Pre-restore analysis and validation
|
||
- Shows backup format, compression type, database type
|
||
- Estimates uncompressed size (3x compression ratio)
|
||
- Calculates RTO (Recovery Time Objective) based on active profile
|
||
- Validates backup integrity without actual restore
|
||
- Displays resource requirements (RAM, CPU, disk space)
|
||
- Example: `dbbackup restore preview backup.dump.gz`
|
||
|
||
- **`dbbackup diff` command** - Compare two backups and track changes
|
||
- Flexible input: file paths, catalog IDs, or `database:latest/previous`
|
||
- Shows size delta with percentage change
|
||
- Calculates database growth rate (GB/day)
|
||
- Projects time to reach 10GB threshold
|
||
- Compares backup duration and compression efficiency
|
||
- JSON output for automation and reporting
|
||
- Example: `dbbackup diff mydb:latest mydb:previous`
|
||
|
||
- **`dbbackup cost analyze` command** - Cloud storage cost optimization
|
||
- Analyzes 15 storage tiers across 5 cloud providers
|
||
- AWS S3: Standard, IA, Glacier Instant/Flexible, Deep Archive
|
||
- Google Cloud Storage: Standard, Nearline, Coldline, Archive
|
||
- Azure Blob Storage: Hot, Cool, Archive
|
||
- Backblaze B2 and Wasabi alternatives
|
||
- Monthly/annual cost projections
|
||
- Savings calculations vs S3 Standard baseline
|
||
- Tiered lifecycle strategy recommendations
|
||
- Shows potential savings of 90%+ with proper policies
|
||
- Example: `dbbackup cost analyze --database mydb`
|
||
|
||
### Enhanced
|
||
- **TUI restore preview** - Added RTO estimates and size calculations
|
||
- Shows estimated uncompressed size during restore confirmation
|
||
- Displays estimated restore time based on current profile
|
||
- Helps users make informed restore decisions
|
||
- Keeps TUI simple (essentials only), detailed analysis in CLI
|
||
|
||
### Documentation
|
||
- Updated README.md with new commands and examples
|
||
- Created QUICK_WINS.md documenting the rapid development sprint
|
||
- Added backup diff and cost analysis sections
|
||
|
||
## [4.1.4] - 2026-01-29
|
||
|
||
### Added
|
||
- **New `turbo` restore profile** - Maximum restore speed, matches native `pg_restore -j8`
|
||
- `ClusterParallelism = 2` (restore 2 DBs concurrently)
|
||
- `Jobs = 8` (8 parallel pg_restore jobs)
|
||
- `BufferedIO = true` (32KB write buffers for faster extraction)
|
||
- Works on 16GB+ RAM, 4+ cores
|
||
- Usage: `dbbackup restore cluster backup.tar.gz --profile=turbo --confirm`
|
||
|
||
- **Restore startup performance logging** - Shows actual parallelism settings at restore start
|
||
- Logs profile name, cluster_parallelism, pg_restore_jobs, buffered_io
|
||
- Helps verify settings before long restore operations
|
||
|
||
- **Buffered I/O optimization** - 32KB write buffers during tar extraction (turbo profile)
|
||
- Reduces system call overhead
|
||
- Improves I/O throughput for large archives
|
||
|
||
### Fixed
|
||
- **TUI now respects saved profile settings** - Previously TUI forced `conservative` profile on every launch, ignoring user's saved configuration. Now properly loads and respects saved settings.
|
||
|
||
### Changed
|
||
- TUI default profile changed from forced `conservative` to `balanced` (only when no profile configured)
|
||
- `LargeDBMode` no longer forced on TUI startup - user controls it via settings
|
||
|
||
## [4.1.3] - 2026-01-27
|
||
|
||
### Added
|
||
- **`--config` / `-c` global flag** - Specify config file path from anywhere
|
||
- Example: `dbbackup --config /opt/dbbackup/.dbbackup.conf backup single mydb`
|
||
- No longer need to `cd` to config directory before running commands
|
||
- Works with all subcommands (backup, restore, verify, etc.)
|
||
|
||
## [4.1.2] - 2026-01-27
|
||
|
||
### Added
|
||
- **`--socket` flag for MySQL/MariaDB** - Connect via Unix socket instead of TCP/IP
|
||
- Usage: `dbbackup backup single mydb --db-type mysql --socket /var/run/mysqld/mysqld.sock`
|
||
- Works for both backup and restore operations
|
||
- Supports socket auth (no password required with proper permissions)
|
||
|
||
### Fixed
|
||
- **Socket path as --host now works** - If `--host` starts with `/`, it's auto-detected as a socket path
|
||
- Example: `--host /var/run/mysqld/mysqld.sock` now works correctly instead of DNS lookup error
|
||
- Auto-converts to `--socket` internally
|
||
|
||
## [4.1.1] - 2026-01-25
|
||
|
||
### Added
|
||
- **`dbbackup_build_info` metric** - Exposes version and git commit as Prometheus labels
|
||
- Useful for tracking deployed versions across a fleet
|
||
- Labels: `server`, `version`, `commit`
|
||
|
||
### Fixed
|
||
- **Documentation clarification**: The `pitr_base` value for `backup_type` label is auto-assigned
|
||
by `dbbackup pitr base` command. CLI `--backup-type` flag only accepts `full` or `incremental`.
|
||
This was causing confusion in deployments.
|
||
|
||
## [4.1.0] - 2026-01-25
|
||
|
||
### Added
|
||
- **Backup Type Tracking**: All backup metrics now include a `backup_type` label
|
||
(`full`, `incremental`, or `pitr_base` for PITR base backups)
|
||
- **PITR Metrics**: Complete Point-in-Time Recovery monitoring
|
||
- `dbbackup_pitr_enabled` - Whether PITR is enabled (1/0)
|
||
- `dbbackup_pitr_archive_lag_seconds` - Seconds since last WAL/binlog archived
|
||
- `dbbackup_pitr_chain_valid` - WAL/binlog chain integrity (1=valid)
|
||
- `dbbackup_pitr_gap_count` - Number of gaps in archive chain
|
||
- `dbbackup_pitr_archive_count` - Total archived segments
|
||
- `dbbackup_pitr_archive_size_bytes` - Total archive storage
|
||
- `dbbackup_pitr_recovery_window_minutes` - Estimated PITR coverage
|
||
- **PITR Alerting Rules**: 6 new alerts for PITR monitoring
|
||
- PITRArchiveLag, PITRChainBroken, PITRGapsDetected, PITRArchiveStalled,
|
||
PITRStorageGrowing, PITRDisabledUnexpectedly
|
||
- **`dbbackup_backup_by_type` metric** - Count backups by type
|
||
|
||
### Changed
|
||
- `dbbackup_backup_total` type changed from counter to gauge for snapshot-based collection
|
||
|
||
## [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
|
||
|
||
**Backup Diagnosis Command:**
|
||
- `restore diagnose <archive>` - Deep analysis of backup files before restore
|
||
- Detects truncated dumps, corrupted archives, incomplete COPY blocks
|
||
- PGDMP signature validation for PostgreSQL custom format
|
||
- Gzip integrity verification with decompression test
|
||
- `pg_restore --list` validation for custom format archives
|
||
- `--deep` flag for exhaustive line-by-line analysis
|
||
- `--json` flag for machine-readable output
|
||
- Cluster archive diagnosis scans all contained dumps
|
||
|
||
**Detailed Error Reporting:**
|
||
- Comprehensive error collector captures stderr during restore
|
||
- Ring buffer prevents OOM on high-error restores (2M+ errors)
|
||
- Error classification with actionable hints and recommendations
|
||
- `--save-debug-log <path>` saves JSON report on failure
|
||
- Reports include: exit codes, last errors, line context, tool versions
|
||
- Automatic recommendations based on error patterns
|
||
|
||
**TUI Restore Enhancements:**
|
||
- **Dump validity** safety check runs automatically before restore
|
||
- Detects truncated/corrupted backups in restore preview
|
||
- Press **`d`** to toggle debug log saving in Advanced Options
|
||
- Debug logs saved to `/tmp/dbbackup-restore-debug-*.json` on failure
|
||
- Press **`d`** in archive browser to run diagnosis on any backup
|
||
|
||
**New Commands:**
|
||
- `restore diagnose` - Analyze backup file integrity and structure
|
||
|
||
**New Flags:**
|
||
- `--save-debug-log <path>` - Save detailed JSON error report on failure
|
||
- `--diagnose` - Run deep diagnosis before cluster restore
|
||
- `--deep` - Enable exhaustive diagnosis (line-by-line analysis)
|
||
- `--json` - Output diagnosis in JSON format
|
||
- `--keep-temp` - Keep temporary files after diagnosis
|
||
- `--verbose` - Show detailed diagnosis progress
|
||
|
||
### Technical Details
|
||
- 1,200+ lines of new diagnostic code
|
||
- Error classification system with 15+ error patterns
|
||
- Ring buffer stderr capture (1MB max, 10K lines)
|
||
- Zero memory growth on high-error restores
|
||
- Full TUI integration for diagnostics
|
||
|
||
---
|
||
|
||
## [3.2.0] - 2025-12-13 "The Margin Eraser"
|
||
|
||
### Added - Physical Backup Revolution
|
||
|
||
**MySQL Clone Plugin Integration:**
|
||
- Native physical backup using MySQL 8.0.17+ Clone Plugin
|
||
- No XtraBackup dependency - pure Go implementation
|
||
- Real-time progress monitoring via performance_schema
|
||
- Support for both local and remote clone operations
|
||
|
||
**Filesystem Snapshot Orchestration:**
|
||
- LVM snapshot support with automatic cleanup
|
||
- ZFS snapshot integration with send/receive
|
||
- Btrfs subvolume snapshot support
|
||
- Brief table lock (<100ms) for consistency
|
||
- Automatic snapshot backend detection
|
||
|
||
**Continuous Binlog Streaming:**
|
||
- Real-time binlog capture using MySQL replication protocol
|
||
- Multiple targets: file, compressed file, S3 direct streaming
|
||
- Sub-second RPO without impacting database server
|
||
- Automatic position tracking and checkpointing
|
||
|
||
**Parallel Cloud Streaming:**
|
||
- Direct database-to-S3 streaming (zero local storage)
|
||
- Configurable worker pool for parallel uploads
|
||
- S3 multipart upload with automatic retry
|
||
- Support for S3, GCS, and Azure Blob Storage
|
||
|
||
**Smart Engine Selection:**
|
||
- Automatic engine selection based on environment
|
||
- MySQL version detection and capability checking
|
||
- Filesystem type detection for optimal snapshot backend
|
||
- Database size-based recommendations
|
||
|
||
**New Commands:**
|
||
- `engine list` - List available backup engines
|
||
- `engine info <name>` - Show detailed engine information
|
||
- `backup --engine=<name>` - Use specific backup engine
|
||
|
||
### Technical Details
|
||
- 7,559 lines of new code
|
||
- Zero new external dependencies
|
||
- 10/10 platform builds successful
|
||
- Full test coverage for new engines
|
||
|
||
## [3.1.0] - 2025-11-26
|
||
|
||
### Added - 🔄 Point-in-Time Recovery (PITR)
|
||
|
||
**Complete PITR Implementation for PostgreSQL:**
|
||
- **WAL Archiving**: Continuous archiving of Write-Ahead Log files with compression and encryption support
|
||
- **Timeline Management**: Track and manage PostgreSQL timeline history with branching support
|
||
- **Recovery Targets**: Restore to specific timestamp, transaction ID (XID), LSN, named restore point, or immediate
|
||
- **PostgreSQL Version Support**: Both modern (12+) and legacy recovery configuration formats
|
||
- **Recovery Actions**: Promote to primary, pause for inspection, or shutdown after recovery
|
||
- **Comprehensive Testing**: 700+ lines of tests covering all PITR functionality with 100% pass rate
|
||
|
||
**New Commands:**
|
||
|
||
**PITR Management:**
|
||
- `pitr enable` - Configure PostgreSQL for WAL archiving and PITR
|
||
- `pitr disable` - Disable WAL archiving in PostgreSQL configuration
|
||
- `pitr status` - Display current PITR configuration and archive statistics
|
||
|
||
**WAL Archive Operations:**
|
||
- `wal archive <wal-file> <filename>` - Archive WAL file (used by archive_command)
|
||
- `wal list` - List all archived WAL files with details
|
||
- `wal cleanup` - Remove old WAL files based on retention policy
|
||
- `wal timeline` - Display timeline history and branching structure
|
||
|
||
**Point-in-Time Restore:**
|
||
- `restore pitr` - Perform point-in-time recovery with multiple target types:
|
||
- `--target-time "YYYY-MM-DD HH:MM:SS"` - Restore to specific timestamp
|
||
- `--target-xid <xid>` - Restore to transaction ID
|
||
- `--target-lsn <lsn>` - Restore to Log Sequence Number
|
||
- `--target-name <name>` - Restore to named restore point
|
||
- `--target-immediate` - Restore to earliest consistent point
|
||
|
||
**Advanced PITR Features:**
|
||
- **WAL Compression**: gzip compression (70-80% space savings)
|
||
- **WAL Encryption**: AES-256-GCM encryption for archived WAL files
|
||
- **Timeline Selection**: Recover along specific timeline or latest
|
||
- **Recovery Actions**: Promote (default), pause, or shutdown after target reached
|
||
- **Inclusive/Exclusive**: Control whether target transaction is included
|
||
- **Auto-Start**: Automatically start PostgreSQL after recovery setup
|
||
- **Recovery Monitoring**: Real-time monitoring of recovery progress
|
||
|
||
**Configuration Options:**
|
||
```bash
|
||
# Enable PITR with compression and encryption
|
||
./dbbackup pitr enable --archive-dir /backups/wal_archive \
|
||
--compress --encrypt --encryption-key-file /secure/key.bin
|
||
|
||
# Perform PITR to specific time
|
||
./dbbackup restore pitr \
|
||
--base-backup /backups/base.tar.gz \
|
||
--wal-archive /backups/wal_archive \
|
||
--target-time "2024-11-26 14:30:00" \
|
||
--target-dir /var/lib/postgresql/14/restored \
|
||
--auto-start --monitor
|
||
```
|
||
|
||
**Technical Details:**
|
||
- WAL file parsing and validation (timeline, segment, extension detection)
|
||
- Timeline history parsing (.history files) with consistency validation
|
||
- Automatic PostgreSQL version detection (12+ vs legacy)
|
||
- Recovery configuration generation (postgresql.auto.conf + recovery.signal)
|
||
- Data directory validation (exists, writable, PostgreSQL not running)
|
||
- Comprehensive error handling and validation
|
||
|
||
**Documentation:**
|
||
- Complete PITR section in README.md (200+ lines)
|
||
- Dedicated PITR.md guide with detailed examples and troubleshooting
|
||
- Test suite documentation (tests/pitr_complete_test.go)
|
||
|
||
**Files Added:**
|
||
- `internal/pitr/wal/` - WAL archiving and parsing
|
||
- `internal/pitr/config/` - Recovery configuration generation
|
||
- `internal/pitr/timeline/` - Timeline management
|
||
- `cmd/pitr.go` - PITR command implementation
|
||
- `cmd/wal.go` - WAL management commands
|
||
- `cmd/restore_pitr.go` - PITR restore command
|
||
- `tests/pitr_complete_test.go` - Comprehensive test suite (700+ lines)
|
||
- `PITR.md` - Complete PITR guide
|
||
|
||
**Performance:**
|
||
- WAL archiving: ~100-200 MB/s (with compression)
|
||
- WAL encryption: ~1-2 GB/s (streaming)
|
||
- Recovery replay: 10-100 MB/s (disk I/O dependent)
|
||
- Minimal overhead during normal operations
|
||
|
||
**Use Cases:**
|
||
- Disaster recovery from accidental data deletion
|
||
- Rollback to pre-migration state
|
||
- Compliance and audit requirements
|
||
- Testing and what-if scenarios
|
||
- Timeline branching for parallel recovery paths
|
||
|
||
### Changed
|
||
- **Licensing**: Added Apache License 2.0 to the project (LICENSE file)
|
||
- **Version**: Updated to v3.1.0
|
||
- Enhanced metadata format with PITR information
|
||
- Improved progress reporting for long-running operations
|
||
- Better error messages for PITR operations
|
||
|
||
### Production
|
||
- **Production Validated**: 2 production hosts
|
||
- **Databases backed up**: 8 databases nightly
|
||
- **Retention policy**: 30-day retention with minimum 5 backups
|
||
- **Backup volume**: ~10MB/night
|
||
- **Schedule**: 02:09 and 02:25 CET
|
||
- **Impact**: Resolved 4-day backup failure immediately
|
||
- **User feedback**: "cleanup command is SO gut" | "--dry-run: chef's kiss!" 💋
|
||
|
||
### Documentation
|
||
- Added comprehensive PITR.md guide (complete PITR documentation)
|
||
- Updated README.md with PITR section (200+ lines)
|
||
- Updated CHANGELOG.md with v3.1.0 details
|
||
- Added NOTICE file for Apache License attribution
|
||
- Created comprehensive test suite (tests/pitr_complete_test.go - 700+ lines)
|
||
|
||
## [3.0.0] - 2025-11-26
|
||
|
||
### Added - AES-256-GCM Encryption (Phase 4)
|
||
|
||
**Secure Backup Encryption:**
|
||
- **Algorithm**: AES-256-GCM authenticated encryption (prevents tampering)
|
||
- **Key Derivation**: PBKDF2-SHA256 with 600,000 iterations (OWASP 2024 recommended)
|
||
- **Streaming Encryption**: Memory-efficient for large backups (O(buffer) not O(file))
|
||
- **Key Sources**: File (raw/base64), environment variable, or passphrase
|
||
- **Auto-Detection**: Restore automatically detects and decrypts encrypted backups
|
||
- **Metadata Tracking**: Encrypted flag and algorithm stored in .meta.json
|
||
|
||
**CLI Integration:**
|
||
- `--encrypt` - Enable encryption for backup operations
|
||
- `--encryption-key-file <path>` - Path to 32-byte encryption key (raw or base64 encoded)
|
||
- `--encryption-key-env <var>` - Environment variable containing key (default: DBBACKUP_ENCRYPTION_KEY)
|
||
- Automatic decryption on restore (no extra flags needed)
|
||
|
||
**Security Features:**
|
||
- Unique nonce per encryption (no key reuse vulnerabilities)
|
||
- Cryptographically secure random generation (crypto/rand)
|
||
- Key validation (32 bytes required)
|
||
- Authenticated encryption prevents tampering attacks
|
||
- 56-byte header: Magic(16) + Algorithm(16) + Nonce(12) + Salt(32)
|
||
|
||
**Usage Examples:**
|
||
```bash
|
||
# Generate encryption key
|
||
head -c 32 /dev/urandom | base64 > encryption.key
|
||
|
||
# Encrypted backup
|
||
./dbbackup backup single mydb --encrypt --encryption-key-file encryption.key
|
||
|
||
# Restore (automatic decryption)
|
||
./dbbackup restore single mydb_backup.sql.gz --encryption-key-file encryption.key --confirm
|
||
```
|
||
|
||
**Performance:**
|
||
- Encryption speed: ~1-2 GB/s (streaming, no memory bottleneck)
|
||
- Overhead: 56 bytes header + 16 bytes GCM tag per file
|
||
- Key derivation: ~1.4s for 600k iterations (intentionally slow for security)
|
||
|
||
**Files Added:**
|
||
- `internal/crypto/interface.go` - Encryption interface and configuration
|
||
- `internal/crypto/aes.go` - AES-256-GCM implementation (272 lines)
|
||
- `internal/crypto/aes_test.go` - Comprehensive test suite (all tests passing)
|
||
- `cmd/encryption.go` - CLI encryption helpers
|
||
- `internal/backup/encryption.go` - Backup encryption operations
|
||
- Total: ~1,200 lines across 13 files
|
||
|
||
### Added - Incremental Backups (Phase 3B)
|
||
|
||
**MySQL/MariaDB Incremental Backups:**
|
||
- **Change Detection**: mtime-based file modification tracking
|
||
- **Archive Format**: tar.gz containing only changed files since base backup
|
||
- **Space Savings**: 70-95% smaller than full backups (typical)
|
||
- **Backup Chain**: Tracks base → incremental relationships with metadata
|
||
- **Checksum Verification**: SHA-256 integrity checking
|
||
- **Auto-Detection**: CLI automatically uses correct engine for PostgreSQL vs MySQL
|
||
|
||
**MySQL-Specific Exclusions:**
|
||
- Relay logs (relay-log, relay-bin*)
|
||
- Binary logs (mysql-bin*, binlog*)
|
||
- InnoDB redo logs (ib_logfile*)
|
||
- InnoDB undo logs (undo_*)
|
||
- Performance schema (in-memory)
|
||
- Temporary files (#sql*, *.tmp)
|
||
- Lock files (*.lock, auto.cnf.lock)
|
||
- PID files (*.pid, mysqld.pid)
|
||
- Error logs (*.err, error.log)
|
||
- Slow query logs (*slow*.log)
|
||
- General logs (general.log, query.log)
|
||
|
||
**CLI Integration:**
|
||
- `--backup-type <full|incremental>` - Backup type (default: full)
|
||
- `--base-backup <path>` - Path to base backup (required for incremental)
|
||
- Auto-detects database type (PostgreSQL vs MySQL) and uses appropriate engine
|
||
- Same interface for both database types
|
||
|
||
**Usage Examples:**
|
||
```bash
|
||
# Full backup (base)
|
||
./dbbackup backup single mydb --db-type mysql --backup-type full
|
||
|
||
# Incremental backup
|
||
./dbbackup backup single mydb \
|
||
--db-type mysql \
|
||
--backup-type incremental \
|
||
--base-backup /backups/mydb_20251126.tar.gz
|
||
|
||
# Restore incremental
|
||
./dbbackup restore incremental \
|
||
--base-backup mydb_base.tar.gz \
|
||
--incremental-backup mydb_incr_20251126.tar.gz \
|
||
--target /restore/path
|
||
```
|
||
|
||
**Implementation:**
|
||
- Copy-paste-adapt from Phase 3A PostgreSQL (95% code reuse)
|
||
- Interface-based design enables sharing tests between engines
|
||
- `internal/backup/incremental_mysql.go` - MySQL incremental engine (530 lines)
|
||
- All existing tests pass immediately (interface compatibility)
|
||
- Development time: 30 minutes (vs 5-6h estimated) - **10x speedup!**
|
||
|
||
**Combined Features:**
|
||
```bash
|
||
# Encrypted + Incremental backup
|
||
./dbbackup backup single mydb \
|
||
--backup-type incremental \
|
||
--base-backup mydb_base.tar.gz \
|
||
--encrypt \
|
||
--encryption-key-file key.txt
|
||
```
|
||
|
||
### Changed
|
||
- **Version**: Bumped to 3.0.0 (major feature release)
|
||
- **Backup Engine**: Integrated encryption and incremental capabilities
|
||
- **Restore Engine**: Added automatic decryption detection
|
||
- **Metadata Format**: Extended with encryption and incremental fields
|
||
|
||
### Testing
|
||
- Encryption tests: 4 tests passing (TestAESEncryptionDecryption, TestKeyDerivation, TestKeyValidation, TestLargeData)
|
||
- Incremental tests: 2 tests passing (TestIncrementalBackupRestore, TestIncrementalBackupErrors)
|
||
- Roundtrip validation: Encrypt → Decrypt → Verify (data matches perfectly)
|
||
- Build: All platforms compile successfully
|
||
- Interface compatibility: PostgreSQL and MySQL engines share test suite
|
||
|
||
### Documentation
|
||
- Updated README.md with encryption and incremental sections
|
||
- Added PHASE4_COMPLETION.md - Encryption implementation details
|
||
- Added PHASE3B_COMPLETION.md - MySQL incremental implementation report
|
||
- Usage examples for encryption, incremental, and combined workflows
|
||
|
||
### Performance
|
||
- **Phase 4**: Completed in ~1h (encryption library + CLI integration)
|
||
- **Phase 3B**: Completed in 30 minutes (vs 5-6h estimated)
|
||
- **Total**: 2 major features delivered in 1 day (planned: 6 hours, actual: ~2 hours)
|
||
- **Quality**: Production-ready, all tests passing, no breaking changes
|
||
|
||
### Commits
|
||
- Phase 4: 3 commits (7d96ec7, f9140cf, dd614dd, 8bbca16)
|
||
- Phase 3B: 2 commits (357084c, a0974ef)
|
||
- Docs: 1 commit (3b9055b)
|
||
|
||
## [2.1.0] - 2025-11-26
|
||
|
||
### Added - Cloud Storage Integration
|
||
- **S3/MinIO/B2 Support**: Native S3-compatible storage backend with streaming uploads
|
||
- **Azure Blob Storage**: Native Azure integration with block blob support for files >256MB
|
||
- **Google Cloud Storage**: Native GCS integration with 16MB chunked uploads
|
||
- **Cloud URI Syntax**: Direct backup/restore using `--cloud s3://bucket/path` URIs
|
||
- **TUI Cloud Settings**: Configure cloud providers directly in interactive menu
|
||
- Cloud Storage Enabled toggle
|
||
- Provider selector (S3, MinIO, B2, Azure, GCS)
|
||
- Bucket/Container configuration
|
||
- Region configuration
|
||
- Credential management with masking
|
||
- Auto-upload toggle
|
||
- **Multipart Uploads**: Automatic multipart uploads for files >100MB (S3/MinIO/B2)
|
||
- **Streaming Transfers**: Memory-efficient streaming for all cloud operations
|
||
- **Progress Tracking**: Real-time upload/download progress with ETA
|
||
- **Metadata Sync**: Automatic .sha256 and .info file upload alongside backups
|
||
- **Cloud Verification**: Verify backup integrity directly from cloud storage
|
||
- **Cloud Cleanup**: Apply retention policies to cloud-stored backups
|
||
|
||
### Added - Cross-Platform Support
|
||
- **Windows Support**: Native binaries for Windows Intel (amd64) and ARM (arm64)
|
||
- **NetBSD Support**: Full support for NetBSD amd64 (disk checks use safe defaults)
|
||
- **Platform-Specific Implementations**:
|
||
- `resources_unix.go` - Linux, macOS, FreeBSD, OpenBSD
|
||
- `resources_windows.go` - Windows stub implementation
|
||
- `disk_check_netbsd.go` - NetBSD disk space stub
|
||
- **Build Tags**: Proper Go build constraints for platform-specific code
|
||
- **All Platforms Building**: 10/10 platforms successfully compile
|
||
- Linux (amd64, arm64, armv7)
|
||
- macOS (Intel, Apple Silicon)
|
||
- Windows (Intel, ARM)
|
||
- FreeBSD amd64
|
||
- OpenBSD amd64
|
||
- - NetBSD amd64
|
||
|
||
### Changed
|
||
- **Cloud Auto-Upload**: When `CloudEnabled=true` and `CloudAutoUpload=true`, backups automatically upload after creation
|
||
- **Configuration**: Added cloud settings to TUI settings interface
|
||
- **Backup Engine**: Integrated cloud upload into backup workflow with progress tracking
|
||
|
||
### Fixed
|
||
- **BSD Syscall Issues**: Fixed `syscall.Rlimit` type mismatches (int64 vs uint64) on BSD platforms
|
||
- **OpenBSD RLIMIT_AS**: Made RLIMIT_AS check Linux-only (not available on OpenBSD)
|
||
- **NetBSD Disk Checks**: Added safe default implementation for NetBSD (syscall.Statfs unavailable)
|
||
- **Cross-Platform Builds**: Resolved Windows syscall.Rlimit undefined errors
|
||
|
||
### Documentation
|
||
- Updated README.md with Cloud Storage section and examples
|
||
- Enhanced CLOUD.md with setup guides for all providers
|
||
- Added testing scripts for Azure and GCS
|
||
- Docker Compose files for Azurite and fake-gcs-server
|
||
|
||
### Testing
|
||
- Added `scripts/test_azure_storage.sh` - Azure Blob Storage integration tests
|
||
- Added `scripts/test_gcs_storage.sh` - Google Cloud Storage integration tests
|
||
- Docker Compose setups for local testing (Azurite, fake-gcs-server, MinIO)
|
||
|
||
## [2.0.0] - 2025-11-25
|
||
|
||
### Added - Production-Ready Release
|
||
- **100% Test Coverage**: All 24 automated tests passing
|
||
- **Zero Critical Issues**: Production-validated and deployment-ready
|
||
- **Backup Verification**: SHA-256 checksum generation and validation
|
||
- **JSON Metadata**: Structured .info files with backup metadata
|
||
- **Retention Policy**: Automatic cleanup of old backups with configurable retention
|
||
- **Configuration Management**:
|
||
- Auto-save/load settings to `.dbbackup.conf` in current directory
|
||
- Per-directory configuration for different projects
|
||
- CLI flags always take precedence over saved configuration
|
||
- Passwords excluded from saved configuration files
|
||
|
||
### Added - Performance Optimizations
|
||
- **Parallel Cluster Operations**: Worker pool pattern for concurrent database operations
|
||
- **Memory Efficiency**: Streaming command output eliminates OOM errors
|
||
- **Optimized Goroutines**: Ticker-based progress indicators reduce CPU overhead
|
||
- **Configurable Concurrency**: `CLUSTER_PARALLELISM` environment variable
|
||
|
||
### Added - Reliability Enhancements
|
||
- **Context Cleanup**: Proper resource cleanup with `sync.Once` and `io.Closer` interface
|
||
- **Process Management**: Thread-safe process tracking with automatic cleanup on exit
|
||
- **Error Classification**: Regex-based error pattern matching for robust error handling
|
||
- **Performance Caching**: Disk space checks cached with 30-second TTL
|
||
- **Metrics Collection**: Structured logging with operation metrics
|
||
|
||
### Fixed
|
||
- **Configuration Bug**: CLI flags now correctly override config file values
|
||
- **Memory Leaks**: Proper cleanup prevents resource leaks in long-running operations
|
||
|
||
### Changed
|
||
- **Streaming Architecture**: Constant ~1GB memory footprint regardless of database size
|
||
- **Cross-Platform**: Native binaries for Linux (x64/ARM), macOS (x64/ARM), FreeBSD, OpenBSD
|
||
|
||
## [1.2.0] - 2025-11-12
|
||
|
||
### Added
|
||
- **Interactive TUI**: Full terminal user interface with progress tracking
|
||
- **Database Selector**: Interactive database selection for backup operations
|
||
- **Archive Browser**: Browse and restore from backup archives
|
||
- **Configuration Settings**: In-TUI configuration management
|
||
- **CPU Detection**: Automatic CPU detection and optimization
|
||
|
||
### Changed
|
||
- Improved error handling and user feedback
|
||
- Enhanced progress tracking with real-time updates
|
||
|
||
## [1.1.0] - 2025-11-10
|
||
|
||
### Added
|
||
- **Multi-Database Support**: PostgreSQL, MySQL, MariaDB
|
||
- **Cluster Operations**: Full cluster backup and restore for PostgreSQL
|
||
- **Sample Backups**: Create reduced-size backups for testing
|
||
- **Parallel Processing**: Automatic CPU detection and parallel jobs
|
||
|
||
### Changed
|
||
- Refactored command structure for better organization
|
||
- Improved compression handling
|
||
|
||
## [1.0.0] - 2025-11-08
|
||
|
||
### Added
|
||
- Initial release
|
||
- Single database backup and restore
|
||
- PostgreSQL support
|
||
- Basic CLI interface
|
||
- Streaming compression
|
||
|
||
---
|
||
|
||
## Version Numbering
|
||
|
||
- **Major (X.0.0)**: Breaking changes, major feature additions
|
||
- **Minor (0.X.0)**: New features, non-breaking changes
|
||
- **Patch (0.0.X)**: Bug fixes, minor improvements
|
||
|
||
## Upcoming Features
|
||
|
||
See [ROADMAP.md](ROADMAP.md) for planned features:
|
||
- Phase 3: Incremental Backups
|
||
- Phase 4: Encryption (AES-256)
|
||
- Phase 5: PITR (Point-in-Time Recovery)
|
||
- Phase 6: Enterprise Features (Prometheus metrics, remote restore)
|