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SubjectRe: XFS internal error xfs_trans_cancel at line 1138 of file fs/xfs/xfs_trans.c (kernel 2.6.18.1)
On 30/11/06, David Chinner <dgc@sgi.com> wrote:
> On Wed, Nov 29, 2006 at 10:17:25AM +0100, Jesper Juhl wrote:
> > On 29/11/06, David Chinner <dgc@sgi.com> wrote:
> > >On Tue, Nov 28, 2006 at 04:49:00PM +0100, Jesper Juhl wrote:
> > >> Filesystem "dm-1": XFS internal error xfs_trans_cancel at line 1138 of
> > >> file fs/xfs/xfs_trans.c. Caller 0xffffffff8034b47e
> > >>
> > >> Call Trace:
> > >> [<ffffffff8020b122>] show_trace+0xb2/0x380
> > >> [<ffffffff8020b405>] dump_stack+0x15/0x20
> > >> [<ffffffff80327b4c>] xfs_error_report+0x3c/0x50
> > >> [<ffffffff803435ae>] xfs_trans_cancel+0x6e/0x130
> > >> [<ffffffff8034b47e>] xfs_create+0x5ee/0x6a0
> > >> [<ffffffff80356556>] xfs_vn_mknod+0x156/0x2e0
> > >> [<ffffffff803566eb>] xfs_vn_create+0xb/0x10
> > >> [<ffffffff80284b2c>] vfs_create+0x8c/0xd0
> > >> [<ffffffff802e734a>] nfsd_create_v3+0x31a/0x560
> > >> [<ffffffff802ec838>] nfsd3_proc_create+0x148/0x170
> > >> [<ffffffff802e19f9>] nfsd_dispatch+0xf9/0x1e0
> > >> [<ffffffff8049d617>] svc_process+0x437/0x6e0
> > >> [<ffffffff802e176d>] nfsd+0x1cd/0x360
> > >> [<ffffffff8020ab1c>] child_rip+0xa/0x12
> > >> xfs_force_shutdown(dm-1,0x8) called from line 1139 of file
> > >> fs/xfs/xfs_trans.c. Return address = 0xffffffff80359daa
> > >
> > >We shut down the filesystem because we cancelled a dirty transaction.
> > >Once we start to dirty the incore objects, we can't roll back to
> > >an unchanged state if a subsequent fatal error occurs during the
> > >transaction and we have to abort it.
> > >
> > So you are saying that there's nothing I can do to prevent this from
> > happening in the future?
>
> Pretty much - we need to work out what is going wrong and
> we can't from teh shutdown message above - the error has
> occurred in a path that doesn't have error report traps
> in it.
>
> Is this reproducable?
>
Not on demand, no. It has happened only this once as far as I know and
for unknown reasons.


> > >If I understand historic occurrences of this correctly, there is
> > >a possibility that it can be triggered in ENOMEM situations. Was your
> > >machine running out of memoy when this occurred?
> > >
> > Not really. I just checked my monitoring software and, at the time
> > this happened, the box had ~5.9G RAM free (of 8G total) and no swap
> > used (but 11G available).
>
> Ok. Sounds like we need more error reporting points inserted
> into that code so we dump an error earlier and hence have some
> hope of working out what went wrong next time.....
>
> OOC, there weren't any I/O errors reported before this shutdown?
>
No. I looked but found none.

Let me know if there's anything I can do to help.

--
Jesper Juhl <jesper.juhl@gmail.com>
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