Brief summary.  I am a fool and run my entire home network through a pfsense VM on unRAID.  It has worked for years....until now.

 

Lately, my unassigned device which houses the vdisk seems to unmount every few days.  With a reset, the device will come back online mounted.

 

I looked through the syslog and found this at the end related to that device.

 

Jan  9 06:55:19 unraid unassigned.devices: Mount drive command: /sbin/mount -t xfs -o rw,noatime,nodiratime,discard '/dev/sdk1' '/mnt/disks/diskUnassignedKingston480GB'
Jan  9 06:55:19 unraid kernel: XFS (sdk1): mounting with "discard" option, but the device does not support discard
Jan  9 06:55:19 unraid kernel: XFS (sdk1): Filesystem has duplicate UUID cc2bfbe6-93f9-49d1-ae40-1741ec6d5d72 - can't mount
Jan  9 06:55:19 unraid unassigned.devices: Mount of '/dev/sdk1' failed. Error message: mount: /mnt/disks/diskUnassignedKingston480GB: wrong fs type, bad option, bad superblock on /dev/sdk1, missing codepage or helper program, or other error. 
Jan  9 06:55:19 unraid unassigned.devices: Partition 'diskUnassign' cannot be mounted.
Jan  9 06:55:19 unraid unassigned.devices: Don't spin down device '/dev/sdk'.

 

Is something triggering this, or do I have faulty hardware somewhere?  I'm using a SuperMicro 2U server unit with hot swappable drives.  I certainly hope this is not an issue with the backplane and instead something simple like the sata cables.

unraid-diagnostics-20210109-0859.zip

UD SSD is dropping offline, then reconnecting with a new identifier, but since the other one wasn't unmounted it cannot mount due to duplicate UUID, check cables, or swap it with another drive, or if possible use the an onboard SATA port instead so that it could also be trimmed.