UNRAID 7.1.2

I've had my UNRAID server up and running without issue. I'm running a primary PLEX with a secondary Jellyfin server on the side in conjunction with a fully automated Radarr, Sonarr, Overseerr stack alongside qBittorent. Everything has been working flawlessly without issue for close on a year since it was setup. Randomly the other day I went to watch something through Plex and effectively all movie files are showing as missing. A select few of the extra files are playing properly through Plex but the vast majority of the movies, TV shows, documentaries are unavailable. Taking a deeper look and it appears the "root folder" is missing and none of my media is being found anymore. I haven't moved the files haven't or manually renamed anything so this seems weird. So far I've looked into the following:

1) I've checked the director and file permissions as this seemed to be obvious starting point given multiple dockers containers were impacted (these are all correct as far as I know) Considering I didn't change anything this would seem to make sense.

2) I've reviewed the container mapping in each of the individual docker containers setups. Again this seems to remain unchanged from when I originally set everything up following the Trash Guides setup structure.

3) I've tried remapping the folders, deleting media from the Plex database and tried re-adding it. The file was successfully removed but nothing is found to add back in.

4) I've looked through the various logs for Plex, Radarr, Sonarr, UNRAID. I don't really know what I should be looking for. Both the Radarr and Sonarr logs come up with a missing root folder error. This would seem to make sense given what's occurring but it's not clear if this is a problem within a specific docker container or a wider system wide issue.

5) I've checked my hardware status and all drives seem to be healthy. All files are accessible directly through the share without issue and played manually through VLC.

6) Several of the my other median servers have no issue connecting to some of my other media (ie: my ebooks are accessible without issue).

I'm not sure what to take as a next step. Seems extreme to remove and setup these problematic containers again. I'm questioning whether something has been corrupted but I'm not sure if a specific container is the issue so I'm not sure where to start.

Given everything was working without issues as far as I can see I hesitate to think this kind of approach would be successful. Does anyone have any thoughts or insight into what might be occurring? As this seems to impact multiple containers I figured to start withe UNRAID itself as the problem. I'm assuming some diagnostic data might be needed but I'm not sure what would be ideal to share. If someone can point me in the right direction that would help.

Thanks ahead of time.

Attach Diagnostics ZIP to your NEXT post in this thread.

Here is the diagnostics zip file. Let me know if there are any other specific container log files that might help.

slothland-diagnostics-20260201-2025.zip

All of your disks are very full. Hope you have plans for expansion.

Your cache doesn't have a Minimum Free set, so it can't overflow to the array if it fills up. Not likely the cause of your problem, but you should take care of this since you are running with very full disks, including cache. You might run a scrub on cache just in case.

https://docs.unraid.net/unraid-os/using-unraid-to/manage-storage/cache-pools/#minimum-free-space-for-a-cache-pool

Looks like you removed this after FCP warned you about it.

Feb  1 19:05:56 Slothland plugin-manager: NerdTools.plg removed

That's good, but might be worth a reboot in case any of it is still hanging around.

Other than those things, not clear from diagnostics what might be wrong.

What do you get from command line with this?

ls -lah /mnt

and this?

ls -lah /mnt/user

Thanks for comments.

Yes there are plans for an expansion of the capacity. Inevitably I'm sure I'll fill those drives up as well ;-)

Implementing your suggestions didn't yield any change to my situation.

The output from those two commands is the following:

To me this seems to all be normal. Again I didn't update anything prior to this occurring. It's only since this problem started that I've made changes. Overall I'm wondering if this isn't more a problem with the individual docker containers that are problematic rather then an UNRAID related issue.

23 hours ago, jbennie said:

Both the Radarr and Sonarr logs come up with a missing root folder error.

Post docker run for those

In the process of tracking down the Radarr and Sonarr log files I think I might have figured out the issue. No explanation as to why this occurred but effectively I deleted and readded the root media folders within all 4 of the apps that I was having issues with (Plex, Jellyfin, Sonarr, Radarr). It seems like this has fixed what the problems. For now anyway. For now I'm going to call this issue resolved. But definitely a weird issue. Thanks for your help in pointing out the couple areas of improvement.