[Pacemaker] Lustre and Multiple Mount Protection

Dejan Muhamedagic dejanmm at fastmail.fm
Wed Dec 23 12:09:04 UTC 2009


Hi,

On Tue, Dec 22, 2009 at 06:52:34PM +0100, Michael Schwartzkopff wrote:
> Hi,
> 
> The Lustre Filesystem uses a feature called Multiple Mount Protection to make 
> sure that one device is really only mounted by one node.
> 
> My question now: Is this feature really needed in a pacemaker cluster?
> 
> In a pacemaker cluster with correctly enables STONITH the cluster manager 
> takes care that the resource is only mounted on one node, isn't it? At least 
> in my understanding it should. Only after getting the positive feedback that 
> the resource was stopped on the other node or the other node was fenced 
> pacemaker starts the resource on the second node, or?

Right. But I guess you knew that.

Thanks,

Dejan

> Greetings,
> 
> 
> -- 
> Dr. Michael Schwartzkopff
> MultiNET Services GmbH
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