mirror of
https://github.com/acedanger/shell.git
synced 2025-12-06 02:20:11 -08:00
backing up my changes because my server is about to get wiped
This commit is contained in:
Peter Wood
171
plex/docs/backup-script-logic-review-corrected.md
Normal file
171
plex/docs/backup-script-logic-review-corrected.md
Normal file
@@ -0,0 +1,171 @@
|
||||
# Plex Backup Script Logic Review - Corrected Analysis
|
||||
|
||||
## Executive Summary
|
||||
|
||||
After comprehensive review and testing of `/home/acedanger/shell/plex/backup-plex.sh`, I have verified that the script is **functional** contrary to initial static analysis. However, **real database corruption** was detected during testing, and several important fixes are still needed for optimal reliability and safety.
|
||||
|
||||
## ✅ **VERIFIED: Script is Functional**
|
||||
|
||||
**Testing Results:**
|
||||
|
||||
- Script executes successfully with `--help` and `--check-integrity` options
|
||||
- Main function exists at line 1547 and executes properly
|
||||
- Command line argument parsing works correctly
|
||||
- Database integrity checking is functional and detected real corruption
|
||||
|
||||
**Database Corruption Found:**
|
||||
|
||||
```text
|
||||
*** in database main ***
|
||||
On tree page 7231 cell 101: Rowid 5837 out of order
|
||||
On tree page 7231 cell 87: Offset 38675 out of range 245..4092
|
||||
On tree page 7231 cell 83: Offset 50846 out of range 245..4092
|
||||
On tree page 7231 cell 63: Rowid 5620 out of order
|
||||
row 1049 missing from index index_directories_on_path
|
||||
```
|
||||
|
||||
## 🚨 Critical Issues Still Requiring Attention
|
||||
|
||||
### 1. **CRITICAL: Real Database Corruption Detected**
|
||||
|
||||
**Issue:** The Plex database contains multiple corruption issues that need immediate attention.
|
||||
|
||||
**Location:** `/var/lib/plexmediaserver/Library/Application Support/Plex Media Server/Plug-in Support/Databases/com.plexapp.plugins.library.db`
|
||||
|
||||
**Impact:**
|
||||
|
||||
- Data loss risk
|
||||
- Plex service instability
|
||||
- Backup reliability concerns
|
||||
- Potential media library corruption
|
||||
|
||||
**Fix Required:** Use the script's repair capabilities or database recovery tools to fix corruption.
|
||||
|
||||
### 2. **HIGH: Unsafe Force-Kill Operations**
|
||||
|
||||
**Issue:** Service management includes force-kill operations that can corrupt databases.
|
||||
|
||||
**Location:** Lines 1280-1295 in `manage_plex_service()`
|
||||
|
||||
**Impact:**
|
||||
|
||||
- Risk of database corruption during shutdown
|
||||
- Incomplete transaction cleanup
|
||||
- WAL file corruption
|
||||
|
||||
**Code:**
|
||||
|
||||
```bash
|
||||
# If normal stop failed and force_stop is enabled, try force kill
|
||||
if [ "$force_stop" = "true" ]; then
|
||||
log_warning "Normal stop failed, attempting force kill..."
|
||||
local plex_pids
|
||||
plex_pids=$(pgrep -f "Plex Media Server" 2>/dev/null || true)
|
||||
if [ -n "$plex_pids" ]; then
|
||||
echo "$plex_pids" | xargs -r sudo kill -9 # DANGEROUS!
|
||||
```
|
||||
|
||||
**Fix Required:** Remove force-kill operations and implement graceful shutdown with proper timeout handling.
|
||||
|
||||
### 3. **MEDIUM: Inadequate Database Repair Validation**
|
||||
|
||||
**Issue:** Database repair operations lack comprehensive validation of success.
|
||||
|
||||
**Location:** `attempt_database_repair()` function
|
||||
|
||||
**Impact:**
|
||||
|
||||
- False positives on repair success
|
||||
- Incomplete corruption detection
|
||||
- Data loss risk
|
||||
|
||||
**Fix Required:** Implement comprehensive post-repair validation including full integrity checks and functional testing.
|
||||
|
||||
### 4. **MEDIUM: Race Conditions in Service Management**
|
||||
|
||||
**Issue:** Service start/stop operations may have race conditions.
|
||||
|
||||
**Location:** Service management functions
|
||||
|
||||
**Impact:**
|
||||
|
||||
- Service management failures
|
||||
- Backup operation failures
|
||||
- Inconsistent system state
|
||||
|
||||
**Fix Required:** Add proper synchronization and status verification.
|
||||
|
||||
### 5. **LOW: Logging Permission Issues**
|
||||
|
||||
**Status:** **FIXED** - Corrected permissions on logs directory.
|
||||
|
||||
**Previous Impact:**
|
||||
|
||||
- No backup operation logging
|
||||
- Difficult troubleshooting
|
||||
- Missing audit trail
|
||||
|
||||
## ✅ Corrected Previous False Findings
|
||||
|
||||
### Main Function Missing - **FALSE**
|
||||
|
||||
**Previous Assessment:** Script missing main() function
|
||||
**Reality:** Main function exists at line 1547 and works correctly
|
||||
|
||||
### Argument Parsing Broken - **FALSE**
|
||||
|
||||
**Previous Assessment:** Missing esac in command line parsing
|
||||
**Reality:** Argument parsing works correctly with proper case/esac structure
|
||||
|
||||
### Script Non-Functional - **FALSE**
|
||||
|
||||
**Previous Assessment:** Script has never executed successfully
|
||||
**Reality:** Script executes and performs database integrity checks successfully
|
||||
|
||||
## 🔧 Recommended Actions
|
||||
|
||||
### Immediate (Address Real Corruption)
|
||||
|
||||
1. **Run database repair:** Use the script's auto-repair feature to fix detected corruption
|
||||
2. **Backup current state:** Create emergency backup before attempting repairs
|
||||
3. **Monitor repair results:** Verify repair success with integrity checks
|
||||
|
||||
### Short-term (Safety Improvements)
|
||||
|
||||
1. **Remove force-kill operations** from service management
|
||||
2. **Enhance repair validation** with comprehensive success criteria
|
||||
3. **Add proper synchronization** to service operations
|
||||
4. **Implement graceful timeout handling** for service operations
|
||||
|
||||
### Long-term (Architecture Improvements)
|
||||
|
||||
1. **Add comprehensive database validation** beyond basic integrity checks
|
||||
2. **Implement transaction safety** during backup operations
|
||||
3. **Add recovery point validation** to ensure backup quality
|
||||
4. **Enhance error reporting** and notification systems
|
||||
|
||||
## Testing and Validation
|
||||
|
||||
### Current Test Status
|
||||
|
||||
- [x] Script execution verification
|
||||
- [x] Argument parsing verification
|
||||
- [x] Database integrity checking
|
||||
- [x] Logging permissions fix
|
||||
- [ ] Database repair functionality
|
||||
- [ ] Service management safety
|
||||
- [ ] Backup validation accuracy
|
||||
- [ ] Recovery procedures
|
||||
|
||||
### Recommended Testing
|
||||
|
||||
1. **Database repair testing** in isolated environment
|
||||
2. **Service management reliability** under various conditions
|
||||
3. **Backup validation accuracy** with known-good and corrupted databases
|
||||
4. **Recovery procedure validation** with test data
|
||||
|
||||
## Conclusion
|
||||
|
||||
The script is **functional and usable** but requires attention to **real database corruption** and **safety improvements**. The initial static analysis contained several false positives, but the dynamic testing revealed genuine corruption issues that need immediate attention.
|
||||
|
||||
**Priority:** Address the detected database corruption first, then implement safety improvements to prevent future issues.
|
||||
Reference in New Issue
Block a user