Date: Mon, 16 Jun 2008 14:52:21 +1000
From: Dave Chinner <david@fromorbit.com>
To: Eric Sandeen <sandeen@sandeen.net>
Cc: Oliver Pinter <oliver.pntr@gmail.com>, xfs@oss.sgi.com
Subject: Re: XFS errors / BUG / panic, with 2.6.25.7-queue (and older
	2.6.25.y)
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	Oliver Pinter <oliver.pntr@gmail.com>, xfs@oss.sgi.com
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On Sun, Jun 15, 2008 at 10:58:09AM -0500, Eric Sandeen wrote:
> Oliver Pinter wrote:
> > this mistake shutdownkor comes out, remount launched because he
> > panics, only Alt+Sysrq+foo works
> 
> I'm not sure I follow.
> 
> Assuming that :
> http://students.zipernowsky.hu/~oliverp/upload/xfs_error/dsc00775.jpg
> 
> is the first event of interest, it is hitting an assertion on the
> remount path:
> 
>         ASSERT_ALWAYS(atomic_read(&mp->m_active_trans) == 0);
> 
> in xfs_attr_quiesce.

That's caused by a race condition in the VFS w.r.t setting the MS_RDONLY
flag. It should be fixed in 2.6.26.

Cheers,

Dave.
-- 
Dave Chinner
david@fromorbit.com