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Migrate Docker Volume ​

Pack current volume data ​

Pack all volume data as one volume_backup.tar file in current directory.

bash
docker run \
  --rm \
  --volumes-from matomo \
  -v $(pwd):/backup \
  ubuntu \
  tar cvf /backup/volume_backup.tar /data

[Optional] Transport file to remote machine ​

bash
scp ./volume_backup.tar user_name@host_url:~

Enter the password when being prompted.

TODO Mount volume data to new container ​

First, start up the new container with a Docker Volume.

bash
docker run -v /dbdata --name dbstore2 ubuntu /bin/bash

Then load the data from the tar file to the new Docker Volume.

bash
docker run --rm --volumes-from matomo -v $(pwd):/backup ubuntu bash -c "cd /data && tar xvf /backup/volume_backup.tar --strip 1"

Reference ​