July 2, 20197 yr I have 2 - 6TB parity disks and 4 - 6 TB data disks. Parity 1 and Disk 4 have failed overnight probably due to heat. I have ordered 2 - 8 TB drives. What should the replacement process be? tower-diagnostics-20190702-0946.zip
July 2, 20197 yr Community Expert This looks like the typical SASLP problem, all disks dropped offline, reboot and post new diags.
July 2, 20197 yr Community Expert Disks look fine, suggest you replace the SASLP ASAP. To return the array to normal, start it, check that disk4 is mounting correctly and contents look OK, if all good you can re-sync parity and rebuild that disk at the same time, preferably already using a recommended controller, like an LSI, or same thing might happen again.
July 2, 20197 yr Author The same two disks did not mount. I have attached another diag. tower-diagnostics-20190702-1130.zip
July 2, 20197 yr Community Expert Only disk4 isn't mounting, parity doesn't have a filesystem, you can check filesystem on the emulated disk4: https://wiki.unraid.net/Check_Disk_Filesystems#Checking_and_fixing_drives_in_the_webGui or https://wiki.unraid.net/Check_Disk_Filesystems#Drives_formatted_with_XFS
July 3, 20197 yr Author Phase 1 - find and verify superblock... Phase 2 - using internal log - zero log... ERROR: The filesystem has valuable metadata changes in a log which needs to be replayed. Mount the filesystem to replay the log, and unmount it before re-running xfs_repair. If you are unable to mount the filesystem, then use the -L option to destroy the log and attempt a repair. Note that destroying the log may cause corruption -- please attempt a mount of the filesystem before doing this. I believe I have already replaced the data that was stored on this drive. What is the best way to get it mounted and tested?
July 3, 20197 yr Community Expert Disk4 is mounting now, if contents look correct you can rebuild on top, though rebuilding to a new disk is always safer in case something goes wrong.
July 3, 20197 yr Author Because I have already replaced the data that was on this disk, can I format it, or should I wait for the new 8TB disk that should show up today? I ordered two 8-TB disks, one to replace the parity disk that failed. I feel my best option is to put the two new 8TB disks as parity then use the old parity disk as data.
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