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dockerbackupcontainersvolumerestore
Ciprian
Ciprian

Reputation: 151

Docker restore volume of removed container?

At the moment I am trying to understand some scenarios concerning data persistence.

The Data Volume Container Pattern sounds great, and there are ways to backup the attached volumes. But what if I have no current backup the DataVolumeContainer gets removed (rather than only stopped)?

From what I understand the volume is physically still present on my host system, but I can't attach it to a new container (since there's no referencing container left).

Is there a possibility to restore that volume (e.g. mount it to a new container) by referencing its volume file or the volume name? (assuming that I named the volume)

Upvotes: 6

Views: 16734

Answers (2)

VonC
VonC

Reputation: 1324178

but I can't attach it to a new container (since there's no referencing container left).
Is there a possibility to restore that volume (e.g. mount it to a new container) by referencing its volume file or the volume name (assuming that I named the volume)?

Yes there is: if you can find your old volume path, you can, as I mentioned in "Docker mount dangling volume", restore its content in a new (and empty) data volume container by replacing its mounting path content with the one found in the old path.

I prefer saving that path whenever I create a new data volume container.

Upvotes: 4

CFrei
CFrei

Reputation: 3627

Its not clear from your text if you have removed the volume with the container - then its gone - otherwise and by default you can find "raw" docker volumes here: /var/lib/docker/volumes/. Check the docs for docker rm -v.

Normally you would create a volume by docker run ... -v hostpath:containerpath ... and then you have your data always at hostpath available, no matter if you remove your container or not.

Upvotes: 1

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