September 18, 20178 yr Posting for a friend. Shortly after upgrading to 6.3.5 his dockers went offline and the cache drive is listed as unmountable. We attempted a disk repair and this is the result: xfs_repair status: Phase 1 - find and verify superblock... Phase 2 - using internal log - zero log... - scan filesystem freespace and inode maps... Metadata corruption detected at xfs_agf block 0x1/0x200 flfirst 118 in agf 0 too large (max = 118) agf 118 freelist blocks bad, skipping freelist scan agi unlinked bucket 23 is 7447 in ag 0 (inode=7447) agi unlinked bucket 57 is 8249 in ag 0 (inode=8249) agi unlinked bucket 59 is 42024699 in ag 0 (inode=42024699) sb_icount 163776, counted 164800 sb_ifree 1803, counted 1547 sb_fdblocks 16453555, counted 16027419 - 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 - process newly discovered inodes... Phase 4 - check for duplicate blocks... - setting up duplicate extent list... - check for inodes claiming duplicate blocks... - agno = 2 - agno = 0 - agno = 3 - agno = 1 No modify flag set, skipping phase 5 Phase 6 - check inode connectivity... - traversing filesystem ... - traversal finished ... - moving disconnected inodes to lost+found ... disconnected inode 7447, would move to lost+found disconnected inode 8249, would move to lost+found disconnected inode 42024699, would move to lost+found Phase 7 - verify link counts... would have reset inode 7447 nlinks from 0 to 1 would have reset inode 8249 nlinks from 0 to 1 would have reset inode 42024699 nlinks from 0 to 1 No modify flag set, skipping filesystem flush and exiting. Attached are his diagnostics. Assuming we need to reformat the disk and try again, how would I recover the data if the drive is unmountable? tower-diagnostics-20170918-1728.zip
September 18, 20178 yr Community Expert You need to remove the no modify flag (-n) or else xfs_repair is read only.
September 18, 20178 yr Author thanks for the reply @johnnie.black I ran this the next time and got a different notice. Should I run xfs_repair -L /dev/sdb1 now? root@Tower:/home# xfs_repair -v /dev/sdb1 Phase 1 - find and verify superblock... - block cache size set to 758600 entries Phase 2 - using internal log - zero log... zero_log: head block 74016 tail block 70932 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.
September 18, 20178 yr Author Good man. its back up and seems to be in good shape. Now just hope it doesnt happen again?
September 18, 20178 yr Community Expert It's usually a result of other issues, read/write errors or unclean shutdowns being the most common.
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