Long story short - power failed middle of the night. I have a UPS and it would appear from the logs that there was an unclean shutdown, now I have no Dockers.

Can anyone understand why this would have happened and if that is the reason why I now have the "No Docker containers installed"?

Thanks! Logs attached

P.S. This is from Gemini 👇🏼

This log confirms exactly what happened:

1. The UPS worked perfectly and commanded a clean shutdown.

2. The Unraid shutdown script failed to stop a process that was using your cache pool.

3. Because it couldn't unmount the cache pool, the pool was not cleanly exported.

4. This directly caused the "unclean shutdown detected" error you saw in the first log.

5. When the server booted back up, it saw the "busy" or "unclean" cache pool. This likely led to the docker.img and libvirt.img files (which live on that pool) being inaccessible or appearing corrupt, forcing Unraid to create new, empty ones.

The root cause was a process that refused to close, preventing your ZFS cache pool from unmounting cleanly.

camraid-diagnostics-20251113-1916.zip

Docker image is not new, but try recreating it, as long as the appdata is all there, it will restore alçl the apps:

https://docs.unraid.net/unraid-os/troubleshooting/common-issues/docker-troubleshooting/#re-creating-the-docker-image-file

Then:

https://docs.unraid.net/unraid-os/troubleshooting/common-issues/docker-troubleshooting/#reinstalling-docker-applications

Also see below if you have any custom docker networks:

https://docs.unraid.net/unraid-os/troubleshooting/common-issues/docker-troubleshooting/#restoring-docker-custom-networks

Thanks. I'm familiar with this and did just that :). Previously had this issue twice but believe it to be unrelated (disk ran out of space). This time though it seems related to not being able to shut down cleanly. Something hopefully doesn't happen often as I live in the boonies and the power isn't so reliable.