[Linux-cluster] Shared storage across clustered VMs?

[Jeff Karpinski]

On 03/04/2010 10:27 AM, Xavier Montagutelli wrote:
>
> Jeff Karpinski <jeff at 3d0g.net> a écrit :
>
>> Our assigned Red Hat engineer was on-site today and pointed out the 
>> blindingly obvious solution. Can't believe I didn't think of it: Run 
>> NFS as a clustered service and have the VMs mount that. That way ANY 
>> system - even outside of the cluster - can also access the data.
>
> NFS is a much simpler solution. A few days ago, I was supporting NFS 
> instead of a cluster FS for a classroom, in a LTSP setup. But one 
> drawback could be that without any high-availability solution, the 
> server becomes a SPOF. Or do you have a Netapp filer^W^W a server 
> providing high availability ? Any thoughts on this ?
>

Of course. This 4-node cluster is back-ended by a 12T Compellent SAN. 
I'll run NFS as a service on the cluster.