[Linux-cluster] Shared storage across clustered VMs?

[Bernard Chew]

> On Wed, Mar 3, 2010 at 4:09 PM, Kit Gerrits <kitgerrits at gmail.com> wrote:
>
> Might it be a good idea to stick them in the same cluster, but with
> different failure domains?
> That way, chances are higher of staying quorate.
>
> Just a thought...
>
> Kit
>
> -----Original Message-----
> From: linux-cluster-bounces at redhat.com
> [mailto:linux-cluster-bounces at redhat.com] On Behalf Of Xavier Montagutelli
> Sent: woensdag 3 maart 2010 8:28
> To: linux clustering
> Subject: Re: [Linux-cluster] Shared storage across clustered VMs?
>
> On Tuesday 02 March 2010 23:50:26 Jeff Karpinski wrote:
>> I've got a 4 node cluster back-ended with iSCSI storage that's happily
>> running 20 or so VMs. I now have a request to present some shared
>> storage across several of the VMs and am wondering what's the best way
>> to accomplish this. GFS2? Can VMs even communicate back with the
>> cluster for lock_dlm to work?
>>
>> Interested in how others have skinned this cat...
>
> I don't know if GFS2 is the best way to share data among your VMs.
>
> But if you go for GFS2, I suppose the clusters should be different : one
> cluster for the hosts, and one cluster for the VMs having a shared disk with
> GFS2. They have different purposes, you should not mix them.
>
>
>
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Hi,

I read that you should never mix domU and dom0 nodes in the same
cluster due to quorum problems.

Regards,
Bernard