xfs and raid5 - "Structure needs cleaning for directory open"

[Mark Goodwin]

On 05/10/2010 12:20 PM, Dave Chinner wrote:
> On Sun, May 09, 2010 at 08:48:00PM +0200, Rainer Fuegenstein wrote:
>>
>> today in the morning some daemon processes terminated because of
>> errors in the xfs file system on top of a software raid5, consisting
>> of 4*1.5TB WD caviar green SATA disks.
>
> Reminds me of a recent(-ish) md/dm readahead cancellation fix - that
> would fit the symptoms of (btree corruption showing up under heavy IO
> load but no corruption on disk. However, I can't seem to find any
> references to it at the moment (can't remember the bug title), but
> perhaps your distro doesn't have the fix in it?

If it's the bug that Dave's thinking of, it's an issue with md
error handling and the BIO_UPTODATE flag, see :
http://www.mail-archive.com/linux-raid@vger.kernel.org/msg06628.html

For RHEL, this is addressed in Red Hat BZ 512552
https://bugzilla.redhat.com/show_bug.cgi?id=512552

upstream commit c2b00852fbae4f8c45c2651530ded3bd01bde814

Cheers
-- Mark