[Lustre-discuss] obdfilter-survey crashing

Alexey Lyashkov alexey_lyashkov at xyratex.com
Tue Jan 4 19:44:29 PST 2011

Hi Robert,

On Jan 4, 2011, at 23:14, robert wrote:

> Hi Everyone!
> I just setup a lustre system on centos 5.5 and lustre 1.8.5. there are
> three identical oss with four osts each.
> After having fantastic write rates but low read rates, I ran the
> obdfilter-survey script to get a hint of what may cause this.
> Unfortnately obdfilter-survey in case=disk mode freezes on two of my
> three oss at the write task of the 4 objs, 16 threads line and leaves
> the system in an unstable state requiring a reboot. 
Can you provide /var/log/messages contents in time of running obdfilter-survey ?
if you able to replicate crashing - getting output sysrq+t  (in crash time) be very useful to investigate that problem.

Alexey Lyashkov
alexey_lyashkov at xyratex.com

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