Extract a docker volume from docker.img

[Random.Name]

So, for some reason I had to recreate my docker.img file, and I did that by also switching to folder instead of a docker image.

now I just realised that one of my compose files used a volume instead of persistent storage in a folder… quite stupid but it happened.

thankfully I did not delete the docker.img so I have a bit of hope to recover the data.

 

is there a way to extract the contents of a docker volume from the docker.img file? 
 

[Kilrah]

Best way is probably to switch back to that image, then run the container in question and use docker cp to copy the data out.

[Random.Name]

can io do that from a different system? run the docjer.img on my pc or smthing? or do ihave to take my server offline again?

 

[Kilrah]

Should be possible, just everything in there is in folders named with nondescript hashes so you have to find the right one.

 

 

You'll want to do that on a linux system and save to a linux filesystem to preserve the file ownership/permissions.