Re: xfs_force_shutdown called from file fs/xfs/xfs_trans_buf.c

[Federico Sevilla III <jijo@fs3.ph>]

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On Wed, 2009-02-25 at 18:00 +0800, Federico Sevilla III wrote:
> On Wed, 2009-02-25 at 09:46 +1100, Dave Chinner wrote:
> > On Tue, Feb 24, 2009 at 09:04:21PM +0800, Federico Sevilla III wrote:
> 
> > >         attempt to access beyond end of device
> > >         sda7: rw=0, want=154858897362229008, limit=3885978852
> > >         I/O error in filesystem ("sda7") meta-data dev sda7 block 0x2262b58bf959708       ("xfs_trans_read_buf") error 5 buf count 4096
> > 
> > A corrupted extent pointer of some kind. xfs_repair should have
> > found this. Can you run xfs_repair again? If it doesn't find
> > anything, please upgrade xfs_repair to the latest version and
> > try again.

I have attached the output of xfs_repair. You are correct, it did find
errors with the file system, and repaired them. I don't know why this
wasn't caught the first time, but I guess the lesson learned here is to
re-run xfs_repair until it finds no further errors.

Does the output of xfs_repair help give you an idea of what could have
been the root cause of the crash? (I know it's a long shot, but maybe
you recognize a pattern in the messages.)

Thank you very much.

Cheers!

-- 
Federico Sevilla III
F S 3 Consulting Inc.
http://www.fs3.ph

[-- Attachment #1.1.2: xfs_repair_sda7.log --]
[-- Type: text/x-log, Size: 2588 bytes --]

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
bad bmap btree ptr 0xc4c025347495f41 in ino 536960951
bad data fork in inode 536960951
cleared inode 536960951
        - agno = 3
        - agno = 4
        - agno = 5
        - agno = 6
        - agno = 7
        - agno = 8
        - agno = 9
        - agno = 10
        - agno = 11
        - agno = 12
        - agno = 13
        - agno = 14
        - agno = 15
        - agno = 16
        - agno = 17
        - agno = 18
        - agno = 19
        - agno = 20
        - agno = 21
        - agno = 22
        - agno = 23
        - agno = 24
        - agno = 25
        - agno = 26
        - agno = 27
        - agno = 28
        - agno = 29
        - agno = 30
        - agno = 31
        - process newly discovered inodes...
Phase 4 - check for duplicate blocks...
        - setting up duplicate extent list...
        - check for inodes claiming duplicate blocks...
        - agno = 0
        - agno = 1
        - agno = 2
        - agno = 3
entry "in_out of INK_LO_BG.xls" at block 0 offset 2352 in directory inode 537005595 references free inode 536960951
	clearing inode number in entry at offset 2352...
        - agno = 4
        - agno = 5
        - agno = 6
        - agno = 7
        - agno = 8
        - agno = 9
        - agno = 10
        - agno = 11
        - agno = 12
        - agno = 13
        - agno = 14
        - agno = 15
        - agno = 16
        - agno = 17
        - agno = 18
        - agno = 19
        - agno = 20
        - agno = 21
        - agno = 22
        - agno = 23
        - agno = 24
        - agno = 25
        - agno = 26
        - agno = 27
        - agno = 28
        - agno = 29
        - agno = 30
        - agno = 31
Phase 5 - rebuild AG headers and trees...
        - reset superblock...
Phase 6 - check inode connectivity...
        - resetting contents of realtime bitmap and summary inodes
        - traversing filesystem ...
bad hash table for directory inode 537005595 (no data entry): rebuilding
rebuilding directory inode 537005595
        - traversal finished ...
        - moving disconnected inodes to lost+found ...
Phase 7 - verify and correct link counts...
done

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