I pre-cleared a 12TB disk several months ago but left it as an unassigned device as I didn't really need the space at the time. Yesterday I decided to add it to the array. Instead of just stopping the array and then assigning it, I stupidly first formatted the disk (XFS) and then, of course, when I added it to the array it needed to clear the drive. So away it went. Near the end of the Clear, we had a sustained power outage. When my UPS battery was down to 20% Unraid cancelled the clear process and then shutdown cleanly. When the power came back on it restarted the clear process.
After completing the Clear process (with no errors) I added the drive to the array. However, the drive is showing as 'Unmountable' with a filesystem of 'Auto'. I'm not really sure how to proceed from here. Any ideas?