@JorgeB Update - I wanted to run 'zpool clear' but it didn't show the 'Clear' Button, only 'Scrub' So I ran that and it it finished quite fast.
I rebooted and saw a lot more Disk errors in the logs. I ran the scrub again, then it took the pool into DEGRADED mode and showed a errors for one of the disks..
It hung at about 68%. (3+ hrs)
I forced a hard shutdown/restart and ran a Scrub again - This time it showed loads of errors for both disks and went to SUSPENDED > DISABLED > SUSPENDED > DEGRADED status, and it seemed to hang again, although the UNRAID GUI was still responsive; I could not stop/start the Array. With more Device & I/O errors filling up the logs..
I rebooted again and the Array hung at 'mounting drives' - So I switched it off and went to bed.
This afternoon, I pulled the SAS/SATA Controller card and re-placed it into a different PCI Slot.
I reseated the cable at the card, and to each of the 4-bays at the SSD caddy.
I also disconnected power and data cables from the DVD drive as it was unused.
I started it, and now, unbelievably, everything seems back to normal, and all my Containers are available - with the zfs cache pool showing;
pool: cache state: ONLINE scan: resilvered 72K in 00:00:00 with 0 errors on Sat Feb 3 15:56:05 2024 config: NAME STATE READ WRITE CKSUM cache ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 /dev/sdb1 ONLINE 0 0 0 /dev/sdc1 ONLINE 0 0 0 errors: No known data errors
How can I test the integrity of my cache pool & disks?
Note: The 250gb (old disk 4) Disk, has been added under UD for now, showing no SMART Errors.
I could potentially add 2x 4tb SSD drives to the Array at a later time. But need to know this 'half' of the storage is sound..
Thanks for your quick responses last night, and any other comments you might have.
Fresh logs attached.
If this relates to the array failing to stop fully before shut-down, then you could try changing the Settings>Disk Settings>'Default spin down delay' - To - 'Never'.
I see you have shutdownTimeout set to '90', which should be ok.
