[Lustre-discuss] lustre client kernel panic

Bernd Schubert bs_lists at aakef.fastmail.fm
Mon Dec 21 15:35:38 PST 2009

On Monday 21 December 2009, Andreas Dilger wrote:
> On 2009-12-21, at 11:15, Nick Jennings wrote:
> > I had another instance of the client kernel panic which I first
> > encountered a few months ago. This time I managed to get a shot of the
> > console. Attached is the dmesg output from ssn1(OSS) dbn1(MDS) and the
> > JPG is from the console of wsn1(client).
> I see bug 19841, which has at least part of this stack
> (ldlm_cli_pool_shrink) and that is marked a duplicate of 17614.  The
> latter bug is marked landed for 1.8.0 and later releases.

Nick, if you do not want to upgrade or patch your Lustre version, the 
workaround for this is to disable lockless truncates. 

# on all clients
for i in /proc/fs/lustre/llite/*; do
        echo 0 > ${i}/lockless_truncate;


Bernd Schubert
DataDirect Networks

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