On Wed, Nov 24, 2004 at 06:12:33PM +0100, Anders Saaby wrote:
> Hi Lists, (XFS list CC'ed)
> Here is the cituation:
> We have a high-load mailserver serving IMAP from Maildirs. We originally had
> the maildirs on ext3 but the kernel eventually Oopsed every ~20 hours (Oops -
> included) - we then moved the Maildirs to XFS thinking the problems where
> history, but now we get a somewhat similar error from XFS (inluded). They
> both look like a race to me but I am not able to get more out of it.
> Here is what XFS says:
> Filesystem "sdb1": xfs_trans_delete_ail: attempting to delete a log item that
> is not in the AIL
> xfs_force_shutdown(sdb1,0x8) called from line 382 of file
> fs/xfs/xfs_trans_ail.c. Return address = 0xc0216a56
> @Linux version 2.6.9 (root@xxxxxxxxxxxxxxxx) (gcc version 2.96 20000731 (Red
> Hat Linux 7.3 2.96-113)) #1 SMP Tue Oct 19 16:04:55 CEST 2004
> I will be happy to supply any info and do some testing - if anyone catches
> interest! :-)
Yep, very interested. So, "serving IMAP from Maildirs" - from
the filesystems perspective, can you describe that in detail for
me? I would guess that means a shallow directory tree, with quite
large directories (how large?) and many (how many?) small files?
(how small on average?) How frequently are files added/removed?
Is this easily reproducible for you? If so, can you send me
enough details that I can try to reproduce it locally?