Re: 2.6.0-test2+ext3+dbench=Buffer I/O error

From: Jens Axboe (axboe@suse.de)
Date: Thu Jul 31 2003 - 07:05:12 EST


On Wed, Jul 30 2003, Lou Langholtz wrote:
> Andrew Morton wrote:
>
> >Mike Galbraith <efault@gmx.de> wrote:
> >
> >
> >>Greetings,
> >>
> >>While trying to duplicate Randy Hron's "dbench has intermittent hang on
> >>2.6.0-test1-ac2" report, I received quite a few "Buffer I/O error on
> >>/dev/hda8, logical block N" messages. (changing elevators makes no
> >>difference fwiw).
> >>
> >>
> >
> >That's just a gremlinlet. You can delete the offending printk for now.
> >
> >
> >
> >>I went back to test1, and it spat up a couple of "buffer
> >>layer error" messages and associated traces. Attempting to umount
> >>afterward to run fsck left umount in D state. See attachment.
> >>
> >>
> >
> >Well that's a worry. Is it repeatable? . . .
> >
> Any chance this problem is a consequence of not yet having Sean
> Estabrooks partial bvec patch in this person's kernel???
> <http://www.ussg.iu.edu/hypermail/linux/kernel/0307.3/0861.html>. Jens
> said he applied it on 2003/7/27 so it doesn't seem like this could have
> made it into 2.6.0-test1-ac2.

no not unless Mike is using taskfile + pio, and even then I've never
heard of it triggering.

-- 
Jens Axboe

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