[Lustre-discuss] Multihoned Problem, can mount o2ib but not tcp

[Andreas Dilger]

On 2009-10-30, at 10:38, Mike Hanby wrote:
> kernel: LustreError: 15c-8: MGC172.20.20.30 at tcp: The configuration  
> from log 'lustre-client' failed (-2). This may be the result of  
> communication errors between this node and the MGS, a bad  
> configuration, or other errors. See the syslog for more information.
>
> Do I need to run tunefs.lustre on the MGS node as well?

Yes, since you specified multiple NIDs for the MGS, the MGS itself  
needs to
know to accept connections on that interface.

> Thanks, Mike
>
> -----Original Message-----
> From: David Dillow [mailto:dillowda at ornl.gov]
> Sent: Thursday, October 29, 2009 8:32 PM
> To: Mike Hanby
> Cc: 'lustre-discuss at lists.lustre.org'
> Subject: Re: [Lustre-discuss] Multihoned Problem, can mount o2ib but  
> not tcp
>
> On Thu, 2009-10-29 at 17:13 -0500, Mike Hanby wrote:
>> I added the failover and mgsnode settings to each lun (6 luns)  
>> using the following:
>> tunefs.lustre --failnode=172.20.20.31 at tcp --failnode=172.20.20.32 \
>> --mgsnode=172.20.20.30 at tcp /dev/mpath/lun1
>
> Did use --writeconf on the servers? You need to do so with LNET up  
> with
> the appropriate nids, so that clients (and the MDS) can find the  
> servers
> on both networks.
>
> I think this is covered in the manual, so you should check there as
> well.
> -- 
> Dave Dillow
> National Center for Computational Science
> Oak Ridge National Laboratory
> (865) 241-6602 office
>
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Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.