Implement three critical validation checkpoints to improve recovery reliability
and provide users with clear diagnostic information before recovery attempts.
Issue #1: Pre-flight file validation
- New validate_backup_files() function validates all critical files
before starting MySQL instance (ibdata1, redo logs, mysql/, target DB)
- Checks readability and permissions
- Prevents wasted time starting instance when files are missing
- Provides clear remediation steps if issues found
Issue #2: Enhanced database discovery
- New discover_and_report_databases() function lists all found databases
and explains why target database might be missing
- Automatic system table accessibility testing
- Root cause diagnosis (which system tables are corrupted)
- Actionable remediation suggestions based on failure type
Issue #3: System table validation
- New test_system_tables() function validates critical system tables
after instance starts, before dump attempt
- Tests mysql.db, mysql.innodb_table_stats, information_schema.schemata
- Early detection of system table corruption
- User choice to continue or cancel based on test results
Integration into recovery workflow:
- validate_backup_files() called before instance startup (~line 2080)
- test_system_tables() called after startup, before dump (~line 2184)
- discover_and_report_databases() called in dump_database() (~line 1571)
Benefits:
- Immediate feedback if recovery will fail (before instance startup)
- Clear diagnostic output explaining exactly what's wrong
- No more mystery failures with vague error messages
- Actionable remediation steps for each failure mode
Testing:
- ✓ Syntax validation passed
- ✓ All integration points verified
- ✓ MySQL version compatibility (5.7, 8.0, 8.0.30+)
- ✓ Edge cases handled (permissions, missing tables, corruption)
- ✓ Backward compatible with existing workflow
Related: Ticket #43751550, MYSQL_RESTORE_SCRIPT_IMPROVEMENTS.md
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
CRITICAL FIXES (3):
1. P6.14 (Laravel Vendor Size) - Fixed unit loss in size calculation
• Was comparing "500M" → "500" incorrectly
• Now uses pattern matching for proper MB/G detection
2. P6.22 (System Load) - Fixed integer comparison bug
• Was truncating decimal in load ratio calculation
• Now uses proper floating point comparison with bc
3. P6.18 (Process Limits) - Fixed off-by-one error
• Was counting header line from ps aux
• Now subtracts 1 for actual process count
HIGH SEVERITY FIXES (3):
4. P6.17 (I/O Scheduler) - Added multi-device support
• Was hardcoded to "sda" only
• Now checks sda, sdb, nvme*, vd*, xvd* devices
5. P6.19 (Swap I/O) - Improved vmstat column handling
• Was using ambiguous column positioning
• Now captures both swap_in and swap_out with validation
6. P6.13 (Laravel Cache Driver) - Added whitespace trimming
• Was missing values with leading/trailing spaces
• Now uses xargs and tr for proper quote/space stripping
MEDIUM SEVERITY FIXES (4):
7. P6.10 (Magento Extensions) - Fixed count off-by-one
• Was including root directory in count
• Now uses mindepth=1 to exclude root
8. P6.15 (Custom Framework) - Reduced false positive threshold
• Was 20 config files (too low, many frameworks have this)
• Now 50 files (more realistic for genuinely bloated configs)
9. P6.1 (Drupal Modules) - Added database error handling
• Was silently failing if database unavailable
• Now checks function exists and validates query result
10. P6.2 (Drupal Cache) - Added case-insensitive grep
• Was missing "Redis" or "Memcache" with capital letters
• Now uses grep -ci for case-insensitive matching
STATUS:
✅ All 10 logic issues resolved
✅ Syntax validation passed
✅ Ready for testing and deployment
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
Provides user-friendly introduction to the complete diagnostic toolkit:
• Getting started in 2 minutes
• How to understand output (color coding, severity)
• Framework-specific optimization tips
• System-level optimization guidance
• Common issues and quick fixes
• Expected improvements timeline
• Support and reference resources
• Learning path for optimization
Status: ✅ Complete documentation suite
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
DOCUMENTATION FIXES:
1. Updated REFDB_FORMAT.txt (THE developer documentation file):
- Added [UPDATE_2025_12_02_PHP_OPTIMIZER] section
- Documented all 4 new components (2,960 lines, 45 functions)
- Complete workflow documentation for Option 4
- Metrics tracked, safety features, testing status
- Future enhancements and git commit history
- Added [UPDATE_2025_12_03_DOCUMENTATION] section
- Established documentation policies
- Established git commit policies (NO AI markers)
- Clarified REFDB_FORMAT.txt is primary dev docs
2. Deleted docs/DEVELOPMENT_LOG.md (mistake - random file)
ESTABLISHED POLICIES:
- REFDB_FORMAT.txt = Developer documentation (update after EVERY change)
- README.md = User documentation
- NO random .md files in docs/
- NO AI attribution in commits
- Update REFDB_FORMAT.txt after every significant change
DOCUMENTATION UPDATES:
README.md changes:
- Added php-optimizer.sh to performance modules section
- Added 3 new libraries: php-detector.sh, php-analyzer.sh, php-config-manager.sh
- Added comprehensive PHP Configuration Optimizer feature description
- Updated with all capabilities (7-day analysis, OPcache tuning, auto-backup, rollback)
DEVELOPMENT_LOG.md (NEW):
- Comprehensive tracking document for ALL development work
- Detailed documentation of PHP optimizer (Dec 2-3, 2025)
- Component breakdown: 4 files, 2,960 lines, 45 functions
- Complete workflow documentation for Option 4
- Safety features and testing status documented
- Git commit history tracked
- Development guidelines established
- Placeholder sections for Nov 21-30 work to be filled in
DEVELOPMENT GUIDELINES ESTABLISHED:
- NO AI attribution in commits (per user instructions)
- Update DEVELOPMENT_LOG.md with every change
- Track file statistics and testing status
- Document all git commits and decisions
This establishes proper ongoing documentation practices going forward.
cschantz