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Cache disk Unmountable - btrfs file system

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My son was watching Plex and paused it for a bit, when he went to restart it, nothing was online. I could access the GUI, but not everything was loading on the screen. I did a hard reboot of the machine, but the Array won't start. It is stuck trying to mount the cache drive which has all my docker info. I don't even know what to look for at this point.

gurley-diagnostics-20251125-1917.zip

  • Community Expert

btrfs is detecting data corruitpon on multiple pools, start bny running memtest

  • Author
9 hours ago, JorgeB said:

btrfs is detecting data corruitpon on multiple pools, start bny running memtest

I ran the Live Memory Tester and got the results below. Am I screwed?

[26.11.2025 11:10:04 CST] /usr/bin/memtester 10G 1
=============================================================================================

memtester version 4.6.0 (64-bit)
adapted for use on Unraid installations

Copyright (C) 2001-2020 Charles Cazabon
Copyright (C) 2024 desertwitch (modifications for Unraid)

THIS PROGRAM IS PROVIDED AS IS AND WITHOUT ANY WARRANTIES
It is licensed under GNU General Public License Version 2

pagesize is 4096
pagesizemask is 0xfffffffffffff000
want 10240MB (10737418240 bytes)
got  10240MB (10737418240 bytes), trying mlock ...locked.

Loop 1/1:
  Stuck Address            : Testing...           failed
  Random Value             : Testing...           failed
  Compare XOR              : Testing...           ok
  Compare SUB              : Testing...           ok
  Compare MUL              : Testing...           ok
  Compare DIV              : Testing...           ok
  Compare OR               : Testing...           ok
  Compare AND              : Testing...           ok
  Sequential Increment     : Testing...           ok
  Solid Bits               : Testing...           failed
  Block Sequential         : Testing...           failed
  Checkerboard             : Testing...           failed
  Bit Spread               : Testing...           failed
  Bit Flip                 : Testing...           failed
  Walking Ones             : Testing...           failed
  Walking Zeroes           : Testing...           failed
  8-bit Writes             : Testing...           failed
  16-bit Writes            : Testing...           failed

Done.

=============================================================================================
[26.11.2025 11:13:29 CST] The operation has finished with errors.
[26.11.2025 11:13:29 CST] Code: 6 - Error during Stuck Address Test + Other Test(s).
  • Community Expert
19 minutes ago, rtgurley said:

I ran the Live Memory Tester and got the results below. Am I screwed?

You need to fix that first, don't try to continue using the server with known bad RAM, then, once that's resolved, post new diags after array start.

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