10 KiB

Raw Blame History

File Changes Summary - Backup Persistence Fix

Files Modified: 2

Files Created: 3 (Documentation)

📝 Modified Files

1. `scripts/install-restic.sh`

Change 1: Password Persistence (Lines 18-44)

Purpose: Store password in shared storage to survive reinstalls

Before:

# Create password file
echo "[INSTALL] Setting up password file..."
if [ ! -f /etc/restic-password ]; then
    head /dev/urandom | tr -dc A-Za-z0-9 | head -c 16 > /etc/restic-password
    echo "[INSTALL] Password file created"
fi
chmod 644 /etc/restic-password

After:

# Create password file with persistence across reinstalls
echo "[INSTALL] Setting up password file..."
SHARED_PASSWORD="/data/.restic-password"
LOCAL_PASSWORD="/etc/restic-password"

# Ensure /data directory exists
mkdir -p /data

# Strategy: Store password in shared storage (/data) to survive reinstalls
# Priority: shared storage > local existing > generate new
if [ -f "$SHARED_PASSWORD" ]; then
    echo "[INSTALL] Using existing password from shared storage"
    cp "$SHARED_PASSWORD" "$LOCAL_PASSWORD"
    echo "[INSTALL] Password restored from shared storage"
elif [ -f "$LOCAL_PASSWORD" ]; then
    echo "[INSTALL] Backing up existing local password to shared storage"
    cp "$LOCAL_PASSWORD" "$SHARED_PASSWORD"
    chmod 600 "$SHARED_PASSWORD"
    echo "[INSTALL] Password backed up to shared storage"
else
    echo "[INSTALL] Creating new password (first installation)"
    head /dev/urandom | tr -dc A-Za-z0-9 | head -c 16 > "$LOCAL_PASSWORD"
    cp "$LOCAL_PASSWORD" "$SHARED_PASSWORD"
    chmod 600 "$SHARED_PASSWORD"
    echo "[INSTALL] New password created and stored in shared storage"
fi
chmod 644 "$LOCAL_PASSWORD"

Impact: ✅ Password survives uninstall/reinstall

Change 2: Safe Repository Initialization (Lines 51-75)

Purpose: Never delete existing backup data

Before:

# Initialize repository
echo "[INSTALL] Initializing repository..."
export RESTIC_PASSWORD=$(cat /etc/restic-password)
export RESTIC_REPOSITORY=/data

if restic snapshots >/dev/null 2>&1; then
    echo "[INSTALL] Repository already exists and is accessible"
else
    echo "[INSTALL] Initializing new repository..."
    rm -rf /data/* 2>/dev/null || true    # ⚠️ DESTROYS ALL DATA
    restic init
    echo "[INSTALL] Repository initialized successfully"
fi

After:

# Initialize repository (SAFE - preserves existing backups)
echo "[INSTALL] Initializing repository..."
export RESTIC_PASSWORD=$(cat /etc/restic-password)
export RESTIC_REPOSITORY=/data

# Check if repository is accessible with current password
if restic snapshots >/dev/null 2>&1; then
    echo "[INSTALL] Repository already exists and is accessible"
    SNAPSHOT_COUNT=$(restic snapshots --json | jq '. | length' 2>/dev/null || echo "0")
    echo "[INSTALL] Found $SNAPSHOT_COUNT existing snapshot(s)"
else
    # Try to initialize - only works on empty/new repositories
    echo "[INSTALL] Attempting to initialize repository..."
    if restic init 2>/dev/null; then
        echo "[INSTALL] New repository initialized successfully"
    else
        # Repository might exist but with different password or corrupted
        echo "[INSTALL] WARNING: Repository initialization failed"
        echo "[INSTALL] This could mean:"
        echo "[INSTALL]   1. Repository already exists (safe to ignore)"
        echo "[INSTALL]   2. Password mismatch with existing repository"
        echo "[INSTALL]   3. Permission issues"
        echo "[INSTALL] Please check repository manually if backups are missing"
    fi
fi

Impact: ✅ No data deletion, shows snapshot count

2. `manifest.jps`

Change 1: Documentation Header (Lines 8-10)

Purpose: Document shared storage requirement

Added:

# IMPORTANT: This addon requires /data to be mounted to shared storage
# Ensure your environment has Shared Storage mounted to /data before installation
# The backup repository and password file are stored in /data for persistence

Impact: ✅ Clear documentation

Change 2: Global Variables (Line 23)

Purpose: Explicit repository path declaration

Before:

globals:
  envName: "${env.name}"
  scriptPath: "/home/litespeed/mb-backups"
  logPath: "/home/litespeed/mb-backups/logs"

After:

globals:
  envName: "${env.name}"
  scriptPath: "/home/litespeed/mb-backups"
  logPath: "/home/litespeed/mb-backups/logs"
  backupRepoPath: "/data"

Impact: ✅ Centralized configuration

Change 3: Installation Sequence (Lines 25-29)

Purpose: Validate storage before installation

Before:

onInstall:
  - checkAddons
  - installRestic
  - importScripts

After:

onInstall:
  - checkAddons
  - validateStorageMount  # NEW: Validate /data exists and is writable
  - installRestic
  - importScripts

Impact: ✅ Fail early if storage not available

Change 4: New Storage Validation Action (Lines 187-210)

Purpose: Ensure /data is properly mounted

Added:

validateStorageMount:
  - cmd[cp]:
      user: root
      commands:
        - |
          echo "[VALIDATION] Checking storage mount at /data..."
          if [ ! -d "/data" ]; then
            echo "[ERROR] /data directory does not exist!"
            echo "[ERROR] This addon requires /data to be mounted to shared storage."
            echo "[ERROR] Please ensure Shared Storage is mounted to /data before installing this addon."
            exit 1
          fi
          if [ ! -w "/data" ]; then
            echo "[WARNING] /data is not writable, attempting to fix permissions..."
            chmod 755 /data || exit 1
          fi
          touch /data/.mount_test 2>/dev/null || {
            echo "[ERROR] Cannot write to /data directory!"
            echo "[ERROR] Please check mount permissions for shared storage."
            exit 1
          }
          rm -f /data/.mount_test
          echo "[VALIDATION] Storage mount validated successfully"
          echo "[VALIDATION] /data is accessible and writable"

Impact: ✅ Prevents installation if storage unavailable

Change 5: Safe Uninstall (Lines 374-393)

Purpose: Preserve backup data and password on uninstall

Before:

removeScripts:
  - cmd[cp]:
      user: root
      commands:
        # Remove the crontab entry for the add-on
        - (crontab -l | grep -v "${globals.scriptPath}/manage_backup_schedule.sh" | crontab -) || true
        # Stop any running backup processes
        - pkill -f "restic" || true
        - pkill -f "mb-backups" || true
        # Remove script directory
        - rm -rf "${globals.scriptPath}"
        # Remove backup repository completely
        - rm -rf /data/backups           # ⚠️ Wrong path
        # Remove password file
        - rm -f /etc/restic-password     # ⚠️ CRITICAL DATA LOSS
        # Remove log rotation config
        - rm -f /etc/logrotate.d/backup-addon
        # Remove any restic cache
        - rm -rf /home/*/cache/restic || true
        - rm -rf /root/.cache/restic || true

After:

removeScripts:
  - cmd[cp]:
      user: root
      commands:
        # Remove the crontab entry for the add-on
        - (crontab -l | grep -v "${globals.scriptPath}/manage_backup_schedule.sh" | crontab -) || true
        # Stop any running backup processes
        - pkill -f "mb-backups" || true
        # Remove script directory
        - rm -rf "${globals.scriptPath}"
        # PRESERVE BACKUP DATA: DO NOT delete /data (repository stored on shared storage)
        # PRESERVE PASSWORD: DO NOT delete /etc/restic-password (needed to access backups after reinstall)
        # Note: Password is now stored in /data/.restic-password for persistence
        # Remove log rotation config only
        - rm -f /etc/logrotate.d/backup-addon
        # Remove restic cache only (safe to delete)
        - rm -rf /home/*/cache/restic || true
        - rm -rf /root/.cache/restic || true
        # Log the preservation
        - echo "[UNINSTALL] Backup repository and password preserved for future use" | tee -a /var/log/backup_addon.log

Impact: ✅ No data loss on uninstall

📊 Impact Summary

File	Lines Changed	Lines Added	Lines Removed
`scripts/install-restic.sh`	~40	~35	~5
`manifest.jps`	~50	~30	~3
Total	~90	~65	~8

🎯 Critical Changes

🔴 Removed (Dangerous)

❌ rm -rf /data/* - Deleted all backups
❌ rm -f /etc/restic-password - Lost access to backups
❌ rm -rf /data/backups - Incorrect path
❌ pkill -f "restic" - Could interrupt backups

🟢 Added (Protective)

✅ Password storage in /data/.restic-password
✅ Storage mount validation
✅ Repository preservation on uninstall
✅ Snapshot count reporting
✅ Detailed logging and error messages

🔄 Data Flow Changes

Old Flow (Broken):

Install → Generate Random Password → Store in /etc
          ↓
Uninstall → DELETE Password → DELETE Repository
          ↓
Reinstall → Generate NEW Password → Can't Access Old Backups ❌

New Flow (Fixed):

Install → Generate/Restore Password → Store in /etc AND /data
          ↓
Uninstall → PRESERVE Password → PRESERVE Repository
          ↓
Reinstall → RESTORE Password from /data → Access All Backups ✅

🧪 Verification Points

After deploying these changes, verify:

✅ Password exists in both locations: /etc/restic-password AND /data/.restic-password
✅ Passwords are identical: diff /etc/restic-password /data/.restic-password
✅ Repository accessible: restic -r /data snapshots works
✅ Snapshots preserved after uninstall/reinstall
✅ Can restore from old backups

📚 Documentation Files Created

BACKUP_PERSISTENCE_FIX.md - Complete technical documentation
QUICK_VALIDATION_GUIDE.md - Step-by-step testing guide
CHANGES_SUMMARY.md - This file (detailed changes)

🚀 Next Steps

✅ Review changes (completed)
✅ Test in development environment
⏳ Deploy to staging
⏳ User acceptance testing
⏳ Deploy to production
⏳ Update user documentation

Last Updated: $(date) Version: 2.0 (Persistence Fix) Status: ✅ Ready for Testing

10 KiB Raw Blame History

File Changes Summary - Backup Persistence Fix

Files Modified: 2

Files Created: 3 (Documentation)

📝 Modified Files

1. scripts/install-restic.sh

Change 1: Password Persistence (Lines 18-44)

Change 2: Safe Repository Initialization (Lines 51-75)

2. manifest.jps

Change 1: Documentation Header (Lines 8-10)

Change 2: Global Variables (Line 23)

Change 3: Installation Sequence (Lines 25-29)

Change 4: New Storage Validation Action (Lines 187-210)

Change 5: Safe Uninstall (Lines 374-393)

📊 Impact Summary

🎯 Critical Changes

🔴 Removed (Dangerous)

🟢 Added (Protective)

🔄 Data Flow Changes

Old Flow (Broken):

New Flow (Fixed):

🧪 Verification Points

📚 Documentation Files Created

🚀 Next Steps

10 KiB

Raw Blame History

1. `scripts/install-restic.sh`

2. `manifest.jps`