[Lustre-discuss] Clustered MDS & OSS Servers

[Andreas Dilger]

On 2010-01-19, at 13:01, Jagga Soorma wrote:
> I am working on clustering our MDS & OSS servers and wanted to make  
> sure I understand this correctly.  Can you please let me know if  
> this sounds right:
>
> a) Planning on having a floating virtual IP setup on the active MDS  
> server (ib1:1).  This is what the OSS's will use when doing their  
> mkfs.  In an outage this virtual IP address will migrate to the  
> standby node.

This is not how Lustre failover works.  You need to assign a separate  
IP address for each MDS server.  Lustre handles multiple MDS failover  
nodes itself.

> b) On the oss's there is no need for a virtual IP that would need to  
> fail over in an outage.  I would simply have heartbeat mount the  
> filesystems on the other OSS node.


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