October 26, 20232 yr I have had my Unraid server setup for over a year. I started it with old enterprise drives (that are still working fine) and I have added some WD Red Drives over the years and now my setup has two WD Red drives for parity, two WD Reds, the two enterprise drives and an SSD that I run my single VM on and nothing else. The two WD Reds in the array have failed twice with errors and are once again showing as unmountable. I have replaced the cables and precleared them before I added them back again into the array since they seem fine when connected to my linux box and running SMART tests on them. I even salvaged data off them the first time without issue. Just mount and copy. The most recent failure happened during a bit of a stress test as my Nextcloud server was syncing about a TB of data. They are both sitting in Unmountable: Unsupported File System. Should I just give up on these drives and move on or is there something that I am missing. I handle enterprise hardware by day but am a bit of a noob when it comes to Unraid as I have to watch guides to do most anything. Should I try adding the back to the array again... maybe doing it a different way?
October 26, 20232 yr Author Ok, I found on another post where I need to try the repair from within Unraid. This is the result... the drives still do not attach when I start the array. Phase 1 - find and verify superblock... Phase 2 - using internal log - zero log... - scan filesystem freespace and inode maps... - found root inode chunk Phase 3 - for each AG... - scan and clear agi unlinked lists... - process known inodes and perform inode discovery... - agno = 0 - agno = 1 - agno = 2 - agno = 3 - process newly discovered inodes... Phase 4 - check for duplicate blocks... - setting up duplicate extent list... - check for inodes claiming duplicate blocks... - agno = 0 - agno = 3 - agno = 1 - agno = 2 Phase 5 - rebuild AG headers and trees... - reset superblock... Phase 6 - check inode connectivity... - resetting contents of realtime bitmap and summary inodes - traversing filesystem ... - traversal finished ... - moving disconnected inodes to lost+found ... Phase 7 - verify and correct link counts... done
October 26, 20232 yr Community Expert Diags are after rebooting so we can't see what happened, but the disks look healthy, so most likely a power/connection issue, check/replace cables and if the emulated disks are still mounting and assuming contents look correct you can rebuild on top: https://docs.unraid.net/unraid-os/manual/storage-management#rebuilding-a-drive-onto-itself
October 26, 20232 yr Author Thanks. I replaced the data cables but will check the power cables. Both drives failed previously but showed no errors and I mounted them in an external linux server and copies files from them. I precleared them before adding them back in. I ordered a new drive and I am going to install it and see how that goes.
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