Half of the shares missing after data rebuild

[vanarebane]

1. I had Disk1 fail and after before I could replace it Disk2 failed (I had some power loss).
2. I knew that those two disks were good so I swapped them, did data rebuild and all the files were there.
3. But the next day, after parity check had completed there were ton of errors and half of the shares are missing now (they were on that first failed disk) and Disk1 was marked failed again.
4. I replaced Disk1 with a new one, did a data rebuild and half the shared folders were not there.

 

Doing restart is not bringing the shares back and I have not run a full parity check yet..

 

My unRaid tries to do a parity check again, but I stoped it (2 minutes produced already 6 errors).

The unRaid seems to hang after some time (CPU usage is high).

 

I'd be very thankful if some expert can tell me how should I get my shares back..

nassu-diagnostics-20240908-0850.zip

[JorgeB]

5 hours ago, vanarebane said:

I knew that those two disks were good so I swapped them

Does this mean you didn't replace and rebuild the disks? The diags are after a reboot, so we can't see what happened, except that parity is not in sync.

[Squid]

At any point did the drives come up as uncountable and you formatted them?

[vanarebane]

20 hours ago, JorgeB said:

Does this mean you didn't replace and rebuild the disks? The diags are after a reboot, so we can't see what happened, except that parity is not in sync.

The unRaid was hanging on diagnostic export before restart, so could not get diagnostic on before. I did rebuild disks and I believe the disks failed after parity check (does parity check fail disks also?). 

 

The one thing I have not done since the shares have gone missing is parity check. Perhaps it needs to check parity and rebuild some errors for the shares to reappear? Also trying to run Array in any normal way will run CPU in max and any action like stopping array takes forever.

 

The missing shares were stored on only Disk1 also (and I have the previous disk, so worst-case I can maybe try recovering that disk in some other machine).

 

14 hours ago, Squid said:

At any point did the drives come up as uncountable and you formatted them?

I have not formatted any disks unbeknownst. I have done rebuilds few times in the past successfully so I'm somewhat familiar with the procedure. 

 

--

I managed to boot unRaid to safe mode (without hanging on some mounting process) and I'm running parity check ATM.

Edited September 9, 2024 by vanarebane

[JorgeB]

It's difficult to guess without the diags, but possibly there were errors during the rebuild resulting in corrupt rebuild(s), do you still have the old disks?