seems like one of my cache drives has died, the temp is showing * and i'm getting lots of errors in the logs, nothing popped up saying the drive has failed though. should i reboot to try and fix it or is there something else i can do?

unraid-diagnostics-20240426-0831.zip

Apr 26 07:32:59 unraid kernel: nvme nvme0: controller is down; will reset: CSTS=0x3, PCI_STATUS=0x10
Apr 26 07:33:10 unraid kernel: nvme nvme0: Device not ready; aborting reset, CSTS=0x3
Apr 26 07:33:10 unraid kernel: nvme nvme0: Removing after probe failure status: -19

 

NVMe device dropped offline, try power cycling the server, not just rebooting, to see if it comes back.

That did it, it's back online.  will it remirror itself?

Run a correcting scrub in the pool, and make sure all errors are corrected.