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Moving docker image data between VMs (lemmy.ml)
submitted 1 week ago by trilobite@lemmy.ml to c/selfhost@lemmy.ml
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I have 2 servers both running a Debian VM each. The old VM was one of the first o installed several years ago when I knew lityle and its messed up and has little space left. It running on Truenas Scale and has a couple of docker apps that I'm very dependent on (Firefly, Hammond). I want to move the datasets for these docker apps to a newer VM running on Proxmox server. It a Debian 13 VM with loads of space. What are my options for moving the data given neither Firefly nor Hammond have the appropriate export / import functions? I could migrate the old VM that that wouldn't resolve my space issue. Plus it Debian 10 and it would take a lot to being it up to Trixie.

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[-] mhzawadi@lemmy.horwood.cloud 3 points 1 week ago

Assuming truenas does NFS, I would mount the old docker data into the new docker VM. Stop all running containers and copy the data, copy so that you have a backup should you need to revert.

Make sure all containers are in compose files, up date them for new data location.

this post was submitted on 11 Oct 2025
8 points (90.0% liked)

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