[Lustre-discuss] adding 2nd network to lustre

[Andreas Dilger]

On Jan 09, 2009  18:31 -0500, Chris Hunter wrote:
> Andreas Dilger wrote:
>> On Jan 07, 2009  18:16 -0500, Chris Hunter wrote:
>>> We currently use lustre over an infiniband network. We would like to  
>>> allow ethernet clients (ie. no infiniband) to use the same lustre FS.
>>>
>>> The MDT and OSTs were all created using only the MGS infiniband   
>>> interface (ie. mkfs.lustre --mgsnode=10.2.1.30 at ib0).
>>>
>>> So I am missing some configuration for the tcp network. My best guess 
>>> we  need to use the "tunefs.lustre" command to add the mgs tcp NID to 
>>> the  MDT. However this command won't execute while lustre is mounted.
>>>
>>> Any suggestions how to add the tcp network to our existing lustre ib  
>>> network ?
>>
>> I believe this is documented in the Lustre manual at http://manual.lustre.org/
>
> Section 7 of the operations manual does discuss multihomed lustre  
> servers. The example given is destructive -- lustre needs to be  
> reformatted (mkfs.lustre) for multihoming. Can we setup multihoming with  
> our re-formating our lustre FS ?

Yes, definitely.  It should only require a --write-conf...  I think this
has been answered previously on this list, but if not Isaac should get
it into the manual.

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.