i am not sure if this is a false alert but i upgraded my unraid to the latest version then on the restart two disks got disabled. i went to rebuild 1 but i am noticed that it asked to format the disk and on top of that both disks have emulated content with 0 files and both appear to be completely empty in the array view. it is really weird that both of these disks also show filesystem errors in the array view. please look at the log.

server-diagnostics-20250705-1225.zip

Did you try to format the disks?

yea which i assumed that maybe with the new update was a confirmation of data rebuild so it would wipe and restore the data but as content isnt being emulated i am going to assume this drive is gone

Edited July 5, 20251 yr by droopie

Just now, droopie said:

yea which i assumed that maybe it was a confirmation of data rebuild so it would wipe and restore the data but as content isnt being emulated i am going to assume this drive is gone

You should not have done this (and would have gotten a pop up on trying to warn you that format is never part of data recovery). You will have formatted the emulated drive and updated parity to reflect this. The rebuild process will just be rebuilding an empty file system.

Do you have backups? If not the best chance of getting data off the drive is using file recovery software such as UFS Explorer on Windows. That app is not free but does have a free option that would show what might be recovered.

yea i should have backups but luckily i just unassigned the other disk and when i mount that disk, i was able to see the contents.

but what caused this? i think i have a drive that causes the system to hang which disables some disks so every few months i rebuild the disk which i was prepared to do. just not sure why as soon as i started up (with auto start off) the array showed these two disks as unknown filesystem format or something like that causing them to be unmountable. just so i know for next time. still cant wrap my head around the fact that instead of data rebuild it just saw it as empty when just before the restart all the contents was fine. i even rebooted the server and reconnected those cables thinking maybe that was the issue since i thought maybe its just a new feature lol

also, if these disks are now empty empty, whats the best way to just remove these off the array for now and keep what is working? i havent done that since like 2019

Edited July 5, 20251 yr by droopie

If you get unmountable disks again, post new diags, and of course, don't format them.