LoopyLuci Docker Volume Backup & Restore
Backing up and restoring Docker named volumes.
Backup
docker run --rm -v myvolume:/source -v C:\backups:/backup alpine `
tar czf /backup/myvolume.tar.gz -C /source .
Restore
docker run --rm -v myvolume:/target -v C:\backups:/backup alpine `
tar xzf /backup/myvolume.tar.gz -C /target
Backup All
$dir = "C:\backups\docker-volumes"
New-Item -ItemType Directory -Path $dir -Force
foreach ($vol in (docker volume ls -q)) {
docker run --rm -v ${vol}:/source -v ${dir}:/backup alpine `
tar czf "/backup/${vol}.tar.gz" -C /source .
}
Cloud
docker run --rm -v myvolume:/source alpine tar czf - -C /source . |
aws s3 cp - s3://bucket/myvolume-$(date +%F).tar.gz
Pitfalls
- Stop container before backup for consistency
- Named volumes only — anonymous can't be targeted
- Databases — use pg_dump/mysqldump, not file-level backup