Re: xfs errors while unlinking filenames with hash collisions

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On 03/27/14 10:24, Hannes Frederic Sowa wrote:
On Thu, Mar 27, 2014 at 10:15:01AM -0500, Mark Tinguely wrote:
On 03/27/14 09:05, Hannes Frederic Sowa wrote:
On Thu, Mar 27, 2014 at 08:34:14AM -0500, Mark Tinguely wrote:
On 03/27/14 08:23, Hannes Frederic Sowa wrote:
On Thu, Mar 27, 2014 at 08:14:06AM -0500, Mark Tinguely wrote:
Have you tried to run a xfs_repair on the filesystem after the reboot?

Yes, I did. I still use the filesystem and it works. As soon as I try to
remove the directory again the same splash from above happens again.

Is it the latest xfsprogs' repair?

Do you have the output from the repair still?

I can easily test this here, so you can throw any commands and tests at
me. ;)

This is the output:

(I replayed the journal before that)

pre-mount:/# xfs_repair -V
xfs_repair version 3.1.11
pre-mount:/# xfs_repair -v /dev/vda1
Phase 1 - find and verify superblock...
         - block cache size set to 372848 entries
Phase 2 - using internal log
         - zero log...
zero_log: head block 5071 tail block 5071
         - 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
bad hash ordering in block 8388739 of directory inode 3543184

interesting. I will see if I can recreate it.

Are you open to making it an xfstest?

Sure, I'll put it on my todo list for the weekend.

Thanks,

   Hannes


I will bisect where this started to happen. It appears to be around Linux 3.10.

--Mark.

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