From: Dave Chinner <david@fromorbit.com>
To: Gregory Machin <gdm@linuxpro.co.za>
Cc: xfs@oss.sgi.com
Subject: Re: xlog_space_left: head behind tail ?
Date: Mon, 24 Sep 2012 20:50:00 +1000 [thread overview]
Message-ID: <20120924105000.GI20960@dastard> (raw)
In-Reply-To: <CAJzjPK=cvXZKdxhPeCjNO0QCGM7KRqJH8gy6B=EHH_xC-UkwkQ@mail.gmail.com>
[ please leave the mailing list CC on responses. thanks. ]
[Fixed up the top posting mess, too]
On Mon, Sep 24, 2012 at 09:29:04PM +1200, Gregory Machin wrote:
> On Mon, Sep 24, 2012 at 7:26 PM, Dave Chinner <david@fromorbit.com> wrote:
> > On Mon, Sep 24, 2012 at 04:49:43PM +1200, Gregory Machin wrote:
> >> Hi.
> >>
> >> Since I started using Acronis backup software I have the following in my logs :
> >
> > What kernel?
>
> The Kernel : Linux nzhmlfpr04 2.6.32-279.5.2.el6.x86_64 #1 SMP Fri Aug
> 24 01:07:11 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
> OS CentOS : 6.3
So, it doesn't have the fix. You'll have to upgrade to 3.4 or
backport the patch yourself.
> >> Sep 22 20:17:54 nzhmlfpr04 kernel: XFS (dm-3): xlog_space_left: head behind tail
> > ^^^^
> >> Sep 22 20:17:54 nzhmlfpr04 kernel: tail_cycle = 125, tail_bytes = 489472
> >> Sep 22 20:17:54 nzhmlfpr04 kernel: GH cycle = 125, GH bytes = 468080
> >> Sep 22 20:19:07 nzhmlfpr04 kernel: XFS (snumbd11d): Corruption
> > ^^^^^^^^^
> >> detected. Unmount and run xfs_repair
> >
> > Note the different device names the errors are for? So the log space
> > warnings are from different filesystems to the one that corruption
> > has been found on. IOWs, unrelated.
>
> There are 4 xfs filesystems mounted on that machine.
According to the logs, there are at least 5: dm-{2,3,4,5} and
snumbd11d.
> >> and what else
> >> could have cause the 2nd ?
> >
> > Don't know. There's no stack trace in the error message, so I don't
> > even know where it came from. have you modified the xfs_error_level
> > sysctl to turn off verbose reporting?
>
> sysctl.conf is default for CentOS.
So there's an error that isn't reporting a stack by default. That
means it is probably a directory read that is triggering it -
knowing what errors xfs_repair reported would help narrow it down.
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
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prev parent reply other threads:[~2012-09-24 10:49 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-24 4:49 xlog_space_left: head behind tail ? Gregory Machin
2012-09-24 7:26 ` Dave Chinner
[not found] ` <CAJzjPK=cvXZKdxhPeCjNO0QCGM7KRqJH8gy6B=EHH_xC-UkwkQ@mail.gmail.com>
2012-09-24 10:50 ` Dave Chinner [this message]
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