December 19, 20232 yr Server was working perfectly fine. Now it shows 'Unmountable disk present'. I believe 1 cache disk and 1 data disk are having issues. Data disk 2 is showing as not installed. Have only tried reboot till now. Didn't want to break anything by trying other stuff unmhn-diagnostics-20231218-1645.zip
December 28, 20232 yr Author I disconnected and reconnected all the cables. Seems to have solved the cache pool ssd issue. But 1 disk is unable to mount. unmhn-diagnostics-20231228-0003.zip
December 28, 20232 yr Community Expert Handling of unmountable array disks is covered here in the online documentation accessible via the Manual link at the bottom of the Unraid GUI. In addition every forum page has a DOCS link at the top and a Documentation link at the bottom.
December 29, 20232 yr Author Thanks for the reference doc. I was following it. I successfully checked and repaired the drive. The following was the output After Checking 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 (but don't clear) agi unlinked lists... - process known inodes and perform inode discovery... - agno = 0 - agno = 1 - agno = 2 - agno = 3 - agno = 4 - agno = 5 - agno = 6 - agno = 7 - agno = 8 - agno = 9 - process newly discovered inodes... Phase 4 - check for duplicate blocks... - setting up duplicate extent list... - check for inodes claiming duplicate blocks... - agno = 0 - agno = 5 - agno = 1 - agno = 6 - agno = 2 - agno = 7 - agno = 4 - agno = 3 - agno = 8 - agno = 9 No modify flag set, skipping phase 5 Phase 6 - check inode connectivity... - traversing filesystem ... - traversal finished ... - moving disconnected inodes to lost+found ... Phase 7 - verify link counts... No modify flag set, skipping filesystem flush and exiting. After repairing with `-L` option 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 - agno = 4 - agno = 5 - agno = 6 - agno = 7 - agno = 8 - agno = 9 - process newly discovered inodes... Phase 4 - check for duplicate blocks... - setting up duplicate extent list... - check for inodes claiming duplicate blocks... - agno = 0 - agno = 6 - agno = 3 - agno = 4 - agno = 2 - agno = 5 - agno = 7 - agno = 1 - agno = 8 - agno = 9 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... Maximum metadata LSN (1:2452269) is ahead of log (1:2). Format log to cycle 4. done Since I didn't see any errors, I stopped the array, and started in normal mode. Now its showing `Parity-Sync/Data-Rebuild in progress.` . I hope its the right thing
December 29, 20232 yr Community Expert Looks like you successfully repaired the emulated disk2 (which was disabled), and the system is now rebuilding the contents of that emulated disk onto the physical disk2..
December 30, 20232 yr Author Not sure what happened, but my disk 2 has gone back to being disabled and emulated. I'm not sure whether `Parity-Sync/Data-Rebuild in progress.` got complete. But now its showing as Read-check paused. unmhn-diagnostics-20231229-1754.zip
December 30, 20232 yr Community Expert Disk2 dropped offline, looks more like a power/connection issue, check/replace cables and post new diags, also replace cables for the cache SSD.
January 2, 20242 yr Author I retried after reconnecting and did a repair with '-L'. But this time after stopping and starting the drive, no `Parity-Sync/Data-Rebuild` is shown. Drive is still disabled This was the output after '-L' 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 - agno = 4 - agno = 5 - agno = 6 - agno = 7 - agno = 8 - agno = 9 - 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 - agno = 6 - agno = 4 - agno = 5 - agno = 7 - agno = 8 - agno = 9 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... Maximum metadata LSN (7:0) is ahead of log (1:2). Format log to cycle 10. done
January 2, 20242 yr Author I'm trying to do a rebuild with this https://docs.unraid.net/unraid-os/manual/storage-management/#rebuilding-a-drive-onto-itself
January 2, 20242 yr Community Expert 2 hours ago, mhn_10 said: But this time after stopping and starting the drive, no `Parity-Sync/Data-Rebuild` is shown. Drive is still disabled You must do a rebuild.
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