Re: [Vserver] PROBLEM: Oops in log_do_checkpoint, using vserver

[Herbert Poetzl]

On Tue, Oct 19, 2004 at 06:01:00PM -0400, Stephen Frost wrote:
> * Stephen Frost (sfrost@xxxxxxxxxxx) wrote:
> > * Herbert Poetzl (herbert@xxxxxxxxxxxx) wrote:
> > > have seen that too, once in a while, but there where
> > > some changes in 2.6.9, so maybe trying 2.6.9-rc4
> > > (or soon final) with vs1.9.3-rc3 (not much changed
> > > here, see delta for details) would be a good check
> > 
> > Ok.  I had been planning on moving to 2.6.9 and 1.9.3 as soon as both
> > were final.  Guess I can try the RC releases though. :)
> 
> Alright, I got the same oops w/ 2.6.9 and vs1.9.3-rc3:
> 
> Assertion failure in log_do_checkpoint() at fs/jbd/checkpoint.c:361: 
> "drop_count != 0 || cleanup_ret != 0"

you can split up this assertion into

 - drop_count != 0
 - cleanup_ret != 0

and fail on that (or just output those values
before you panic) ... this might give some
deeper insight into the issue ...

> 
> I noticed someone else had this problem too:
> 
> http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=123137

hmm, so that kernel should not be vserver related
at all, so I'd say something with the ext3 journal
is broken ...

> I also followed up on that w/ my oops from 2.6.8.1.
> 
> I also upgraded to 0.30.195, though I don't think that (or vserver in
> general, really) is related to this oops.

yeah, probably not, I think the vserver changes 
just make the oops more likely (or simply the 
increased load does)

> If there's anything else I can do to help get this resolved, please let
> me know..  This is the only problem I'm having with this server now,
> other than this it's behaving pretty nicely. :)

maybe until it gets fixed, mounting the ext3
without journal might help here?

best,
Herbert

> 	Thanks,
> 
> 		Stephen



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