Hello! I have an Unraid array consisting of twelve 14 TB drives, driven by an Adaptec ASR-71605 controller in JBOD mode. The array is configured with xfs and 2-drive parity, and a cache pool with two SSDs. I've had this setup for about three years now, and the array is about halfway full.
About two months ago, Unraid raised a warning that Disk 1 had a SMART error (UDMA CRC error count > 30) and disabled the drive. At the time things were crazy at work and I was not able to look into the problem, so I left the array with Disk 1 disabled (and its contents emulated via Parity). A few days ago however Unraid started complaining about a second drive due to read errors, and disabled that drive as well. I ran a SMART self-test on this drive (I believe it was Disk 7), and it came back successful with no errors.
At this point I tried to fix the array -- probably incorrectly. I stopped the array, unassigned the two drives that had been disabled, and restarted the array. Once the array was back up, I stopped the array one more time, and re-added Disk 7 (which seemed to be healthy). I expected that the array would be re-built from Parity without Disk 1, however the array is now showing three drives with the status: "Unmountable: Unsupported or no file system."
When I SSH into the system I can see all my shares, and a cursory look at them shows that most of the files are still there and accessible. I can't say for sure if all the files are there, or if a bunch of them are missing due to the unmountable disks.
What is the correct way to get the array back to a healthy state, given the current state of things?
Note that I updated Unraid from 6.12.3 to 6.12.6 a week ago. This is significant, because I just noticed today that there is an "Adaptec 7 Series HBA not compatible" known issue mentioned in the release notes. Looking at the attached diagnostics, I see a ton of aacraid warnings such as "Host adapter abort request" or "Outstanding commands." I wonder if this is the source of the above problems, and if I should go ahead and roll back to Unraid 6.12.4 before doing anything else.
Thanks in advance for your help!
diagnostics.zip