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9b83924597
- Introduced `recover-plex-database.sh` for comprehensive database recovery with multiple strategies, logging, and rollback capabilities. - Added `restore-plex.sh` for safe restoration of Plex backups, including validation and dry-run options. - Created `plex-db-manager.sh` to consolidate database management functionalities, including integrity checks and service management. - Enhanced logging and error handling across all scripts for better user feedback and troubleshooting. - Implemented safety measures to prevent running scripts as root and ensure proper service management during operations.
131 lines
4.1 KiB
Markdown
131 lines
4.1 KiB
Markdown
# Plex Database Corruption Resolution Summary
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## ✅ ISSUE RESOLVED: Auto-Repair Cycle Causing Corruption
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### Root Cause Identified
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The primary cause of your Plex database corruption was an **aggressive auto-repair schedule** running every 30 minutes via cron:
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```bash
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# PROBLEMATIC (FIXED):
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*/30 * * * * /home/acedanger/shell/plex/backup-plex.sh --check-integrity --auto-repair
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```
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This caused:
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- 48+ service stops/starts per day
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- WAL file manipulation conflicts
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- Repair cascading failures
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- Race conditions during service transitions
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### ✅ Changes Applied
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#### 1. **Fixed Crontab Schedule**
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- **Before**: Auto-repair every 30 minutes + daily backup with auto-repair
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- **After**:
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- Daily read-only integrity check (6 AM)
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- Daily backup with auto-repair **disabled** (4:15 AM)
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- Manual repair intervention required
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#### 2. **Disabled Auto-Repair Default**
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- Changed `backup-plex.sh` default from `AUTO_REPAIR=true` to `AUTO_REPAIR=false`
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- Prevents automatic repair loops that were causing corruption
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#### 3. **Created Consolidated Management Tool**
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- New script: `plex-db-manager.sh`
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- Safe, read-only integrity checking
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- Manual repair intervention (currently disabled for safety)
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- Proper service management with synchronization
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#### 4. **Database Status** ✅
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Current check shows: **ALL DATABASES HEALTHY**
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- Main database: integrity check PASSED
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- Blobs database: integrity check PASSED
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## 📋 Script Redundancy Analysis
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### Scripts with Overlapping Functionality
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1. **`plex.sh`** - Service management + basic repair
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2. **`backup-plex.sh`** - Backup + auto-repair logic
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3. **`plex-database-repair.sh`** - Dedicated repair functions
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4. **`recover-plex-database.sh`** - Advanced recovery methods
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5. **`nuclear-plex-recovery.sh`** - Nuclear recovery
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6. **`restore-plex.sh`** - Backup restoration
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### Consolidation Recommendations
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#### Keep Active:
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- **`backup-plex.sh`** - Primary backup (with auto-repair disabled)
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- **`plex-db-manager.sh`** - New consolidated management tool
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- **`plex.sh`** - Basic service management
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- **`nuclear-plex-recovery.sh`** - Last resort recovery
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#### Consider Deprecating:
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- **`plex-database-repair.sh`** - Functionality moved to `plex-db-manager.sh`
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- **`recover-plex-database.sh`** - Similar functionality in other scripts
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- **`restore-plex.sh`** - Basic functionality covered elsewhere
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## 🛡️ Prevention Measures Implemented
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### 1. **Conservative Backup Schedule**
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```bash
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# Read-only check (daily at 6 AM)
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0 6 * * * backup-plex.sh --check-integrity --disable-auto-repair
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# Backup without auto-repair (daily at 4:15 AM)
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15 4 * * * backup-plex.sh --non-interactive --disable-auto-repair
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```
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### 2. **Manual Intervention Required**
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- No automatic repairs unless explicitly requested
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- All repair operations require manual approval
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- Comprehensive logging for audit trail
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### 3. **Safe Service Management**
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- Proper service stop/start synchronization
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- Extended timeouts for clean shutdowns
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- Race condition prevention
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## 📊 Expected Improvements
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1. **Stability**: Eliminated 47 daily service interruptions
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2. **Reliability**: No more auto-repair corruption loops
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3. **Performance**: Reduced I/O load on database files
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4. **Maintainability**: Centralized database management
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## 🔧 Usage Going Forward
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### Regular Monitoring:
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```bash
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# Check database health (safe, read-only)
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./plex-db-manager.sh check
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```
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### If Issues Detected:
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```bash
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# View detailed logs
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tail -f /home/acedanger/shell/plex/logs/plex-backup-$(date +%Y-%m-%d).log
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# Manual repair (when re-enabled)
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./plex-db-manager.sh repair
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```
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### Emergency Recovery:
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```bash
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# Only if all else fails
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sudo ./nuclear-plex-recovery.sh --auto
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```
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## ⚠️ Critical Notes
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1. **Auto-repair is temporarily disabled** until stability is confirmed
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2. **Manual intervention required** for any database issues
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3. **Monitor logs closely** for the next week to ensure stability
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4. **Backup integrity** should improve significantly
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---
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**Date Fixed**: June 21, 2025
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**Issue**: 30-minute auto-repair cycle causing database corruption
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**Resolution**: Disabled aggressive auto-repair, implemented safe backup schedule
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**Status**: ✅ RESOLVED - Databases currently healthy
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