October 5, 20232 yr I have two 512GB M.2 NVME cache drives in my Unraid Server installed (RAID1). Suddenly Unraid reported a crashed cache drive. Then i did a shutdown of my docker and vmd, changed every share from "prefer" to "yes" and run the mover to change the one defect cache module. Also the appdata and system. Some files did not move from cache in the system folder. I tried everything... After a few reboots suddenly both cache drives are reported as ok and everything works fine (and slow, because of the storage on the array). Now I see, that both 512GB cache drives are shown as 1TB in total, there seems to be a broken RAID1 (BTRFS). It seems to be RAID0 (stripe set). But everything works fine... Also the amount of stored data seems to be different (see attached screenshots). Can everyone explain that? Can I recreate / convert to RAID1 with no dataloss? Why does the mover not move everything correctly although I did everything fine? THANKS A LOT for your help.
October 6, 20232 yr Author It seems to be a brocken BTRFS... I try to copy the system folder to a external disc and get errors (see attachments). So i will replace the both cache drives with new ones and recreate the cache pool. How does the missing / damaged system folder affect my docker? For backup reasons i prefer to use a docker image file on the cache drive instead of a single directory with a lot of files... The creation of the diag file is in (slow) progress... I will attach that when finished.
October 6, 20232 yr Author Unfortunately i am not able to create the diagnostics file, because the creation process hangs while going through the docker subfolders...
October 6, 20232 yr That snippet shows that one of your NVMe devices dropped offline, see here for more info.
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