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Both have been disabled now. Attaching new diagnostic in case it's needed as I'll be mobile for a few hours. beedoops-diagnostics-20240907-1459dockervm-off.zip

Was unable to load content to Plex from my server today. Checked the server and everything looked fine and then I caught a warning message about a Cache Drive Error. I stopped the array. I unmounted the noted cache with the error and restarted the array. Now I see the same "Unmountable: Unsupported or no file system" message next to my cache drive. Whats-more, when I stopped the array again to re-add the drive (with the initial error) from the drop down in the cache pool, it listed the drive as 0 b. I added it nonetheless, got the same Unmountable message. Stopped array again. Removed the (cache) drive with initial error. Still same (Unmountable) message but now the drive with the error no longer appears when I got to try and add a second cache drive to the pool. I tried a few suggestions here, like btrfs rescue but those were more shots in the dark and lazy troubleshooting. I'm attaching the diagnostics to see if I can get some insight into a fix. Additionally, the array continued to experience issues when rebooting. It woul dbe stuck unmounting an array drive and I would have to manually unmount it. A quick terminal check showed a docker image holding up the process. When I check the docker status, it showed stopped. Then I would manually run umount /dev/loop2 (where dock img is located) and the reboot would work. beedoops-diagnostics-20240907-1315.zip