Backup your Docker Volumes

• Fast and clean.
• Archive whole volume into one file.
• Gzip in Parallel, with progress bar.

See usage: docker run bluet/vback

Note: Make sure no container is using the volume before backup or restore, otherwise your data might be damaged.

docker run [options] [volumes] bluet/vback <action> file

Use -it to see progress bar.

docker run [-it] -v [source-volume-name]:/volume -v [archive-dir]:/backup --rm bluet/vback backup [archive-name]
docker run [-it] -v [target-volume-name]:/volume -v [archive-dir]:/backup --rm bluet/vback restore [archive-name]

Example:

Backup all data in volume docker_dbdata, save the archive file dbsata.tar.gz into ./backup/.

• docker run -it -v docker_dbdata:/volume -v $PWD/backup:/backup --rm bluet/vback backup dbdata

Restore data from archive file /data/backup/dbsata.tar.gz to volume drsite_dbdata.

• Note: This operation will delete all contents of the volume
• docker run -it -v drsite_dbdata:/volume -v /data/backup:/backup --rm bluet/vback restore dbdata

With STDIO support, you can pipe or redirect raw data stream of archive file to next program, any new file, or even send over network.

Must at least use -i to interact with process pipe.

docker run -it -v [source-volume-name]:/volume --rm bluet/vback backup - > [archive-filename]
cat [archive-filename] | docker run -it -v [target-volume-name]:/volume --rm bluet/vback restore -

Example:

Avoids mounting a second backup volume.

• docker run -v docker_dbdata:/volume --rm bluet/vback backup - > dbdata.tar.gz
• cat dbdata.tar.gz | docker run -i -v drsite_dbdata:/volume --rm bluet/vback restore -

Or, even send to remote over network

• (local) $ docker run -v local_data:/volume --rm bluet/vback backup - | nc ...
• (remote) $ nc ... | docker run -v imported_data:/volume --rm bluet/vback restore -

This is an improved version of loomchild's volume-backup utility to backup and restore docker volumes.