Proxmox VE

How to Test Backup Works - Complete Guide

2 min read

How to Test Backup Works - Complete Guide

Question: How do I verify my backups are working?

Answer: Test restoration is essential

Method 1: Using Web UI

Step-by-Step:

1. Navigate to Storage

  • Go to Datacenter → Storage → local
  • Click Content

2. Verify Backup File

  • Find your backup file
  • Check file size (should be > 0)

3. Check Backup Log

  • Go to Datacenter → Backup
  • Look at job status (shows success/failed)

Method 2: Using CLI

Test Backup Integrity

# List backups
vzdump --list
 
# Verify backup file
tar -tzf /var/lib/vz/dump/vzdump-qemu-100-*.tar.gz | wc -l
 
# Check file size
ls -lh /var/lib/vz/dump/

How to Test Restore (Test VM)

Test Restore Steps:

1. Create Test VM

# Create test VM for restore test
qm create 999 --name test-restore --memory 1024

2. Restore to Test VM

# Restore backup to test VM
qmrestore /var/lib/vz/dump/vzdump-*.tar.gz 999

3. Verify Test VM

# Check test VM
qm config 999
 
# Start if needed
qm start 999

4. Clean Up

# Destroy test VM
qm destroy 999 --destroy-unlinked

How to Schedule Test Restore

Monthly Test Schedule

# Add to calendar - monthly first Sunday
# Manually schedule monthly test

Automation Script

#!/bin/bash
# test-restore.sh - Test restore monthly
 
TEST_VM=998
BACKUP_FILE=$(ls -t /var/lib/vz/dump/vzdump-qemu-100*.tar.gz | head -1)
 
echo "Testing backup: $BACKUP_FILE"
 
# Restore
qmrestore "$BACKUP_FILE" $TEST_VM
 
# Check VM
qm start $TEST_VM
 
# Wait and check
sleep 30
 
# Get VM status
if qm status $TEST_VM | grep -q running; then
    echo "TEST PASSED: VM running"
else
    echo "TEST FAILED: VM not running"
    exit 1
fi
 
# Cleanup
qm stop $TEST_VM --forceStop 1
qm destroy $TEST_VM
 
echo "Test complete"

Pro Tips

  1. Test monthly - At minimum quarterly
  2. Document test results
  3. Keep test VM template ready

Keywords

test restore verification how-to beginner

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