After updating from Unraid 7.3.1 to 7.3.2 and rebooting, my Pool Devices' device assignments vanished: the pools were there but empty, all devices showing up as Unassigned. The Array was unaffected. Everything else seems normal.

The pools were:

• A dual BTRFS SSD cache pool.

• A four HDD RaidZ.

• A single laptop-grade HDD.

Reverting to 7.3.1 didn't help (in a bit of a panic there, as I'm a novice). Checking things while guided by ChatGPT 😑 revealed that the /boot/config/pools/ config files had apparently been reset in some manner: no drive assignment info in them.

Luckily everything else seemed intact and just assigning the devices back sufficed. The boot USB drive's current files reflect this (its pool config files show the drives now).

I enclose both the diagnostic files generated inmediately after noticing the issue, and the pool config files from a backup previous to updating.

nas-diagnostics-20260709_2227.zip Pool config files before incident.zip

I don't see any obvious isses lçogegd, but all the pool cfg files were reset, possibly a flash drive issue, or just an issue with its filesystem, pretty sure it was unrelated to the upgrade, especially since you were already on 7.3.x