[Lustre-discuss] lnet_try_match_md()) Matching packet from 12345-10.5.203.250 at tcp, match 19154486 length 728 too big

Michael D. Seymour seymour at cita.utoronto.ca
Fri May 29 12:42:41 PDT 2009


Hi Alexey,

Alexey Lyashkov wrote:
> Hi Michael,
> 
> 
> On Fri, 2009-05-22 at 16:38 -0400, Michael D. Seymour wrote:
>> Hi all,
>>
>> One client running CentOS 5.2 re-exports the Lustre filesystem via NFS on a 
>> different network.
>>
>> We get the following messages on a particular client:
>>
>> May 22 15:07:45 trinity kernel: LustreError: 
>> 5111:0:(lib-move.c:110:lnet_try_match_md()) Matching packet from 
>> 12345-10.5.203.250 at tcp, match 19154486 length 728 too big: 704 left, 704 allowed
> 
> what frequently for this bug? 

Sets of entries (about 20) happen a few times per day, each entry spaced about 
ten minutes apart.

> if this quickly replicated - please set
> lnet.debug=-1, lnet.debug_subsystem=-1 lnet.debug_mb=100, on mds and
> client, replicate and save logs with lctl dk > $logfile.

Debugging has been enabled.I haven't been able to catch it in the act yet. Will 
enabling the debug logging until I can catch the bug overflow anything?

> after it - please fill a bug and attach log from MDS and client to bug.

A bug will be filed as soon as it can be caught with logging enabled.

> this message say - client want for reply less data when mds is send.

Trinity cannot accept data as large as the MDS is sending?

Thanks for you help,
Mike



-- 
Michael D. Seymour                 Phone: 416-978-8497
Scientific Computing Support       Fax: 416-978-3921
Canadian Institute for Theoretical Astrophysics, University of Toronto



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