[6.8.3] Mystery crash and BTRFS errors

[WizADSL]

I came into the room where Unraid lives and notices the server was off.  It's on a UPS and prior to a graceful reboot I did about 45 days ago had run for 377 days without issue.  When I powered it back on it looks like some of the CPUs either crashed/panicked or failed to come up.  The earlier diagnostics should show this.  Because the web interface had stopped responding I had to force a power off.  I restarted the system and it looks like it is back up.  Obviously a parity check is in progress.  I'm still seeing 3 BTRFS errors in the log (see second diagnostics):

 

May  7 03:55:09 Tower kernel: BTRFS error (device sdi1): parent transid verify failed on 2012598697984 wanted 8694591 found 183486155
May  7 03:55:09 Tower kernel: BTRFS error (device sdi1): parent transid verify failed on 2012598697984 wanted 8694591 found 183486155
May  7 03:55:09 Tower kernel: BTRFS error (device sdi1): parent transid verify failed on 2012598697984 wanted 8694591 found 183486155

 

I would appreciate any advice regarding the BTRFS errors and the initial cause of the crash if anyone has any ideas.

 

Thank you.

tower-diagnostics-20210507-0340.zip tower-diagnostics-20210507-0401.zip

[JorgeB]

43 minutes ago, WizADSL said:

parent transid verify failed

Those are usually caused by bad RAM or devices that don't respect write barriers or FUA, due to the very high transition ID difference I would suspect the former, start by running memtest, also make sure cache backups are up to date.