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Date: Tue, 7 Aug 2007 01:58:48 +0100
From: Christoph Hellwig <hch@infradead.org>
To: David Chinner <dgc@sgi.com>
Cc: Laurent Caron <lcaron@lncsa.fr>, linux-kernel@vger.kernel.org
Subject: Re: Oops on 2.6.21 + DRBD + XFS
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On Tue, Aug 07, 2007 at 09:31:22AM +1000, David Chinner wrote:
> On Mon, Aug 06, 2007 at 09:38:19AM +0200, Laurent Caron wrote:
> > Hi,
> > 
> > I'm using an XFS filesystem over DRBD for a few weeks on this machine
> > and did experience an oops.
> 
> ......
> > Aug  3 10:59:47 fileserv kernel: [<c0164be9>] cache_flusharray+0x59/0xd0 
> > Aug  3 10:59:47 fileserv kernel: [<c0164d2a>] kmem_cache_free+0x5a/0x70 
> > Aug  3 10:59:47 fileserv kernel: [<c025fa16>] xfs_finish_reclaim+0x36/0x170 
> > Aug  3 10:59:47 fileserv kernel: [<c026fe41>] xfs_fs_clear_inode+0x91/0xc0 
> > Aug  3 10:59:47 fileserv kernel: [<c017c063>] clear_inode+0x93/0x140 
> > Aug  3 10:59:47 fileserv kernel: [<c017c38a>] dispose_list+0x1a/0xd0 
> 
> Can you run with slab debugging turned on?

And please upgrade to a recent kernel.  I'm pretty sure drbd doesn't
like the useage of slab memory for bios in older xfs versions.
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