Re: [Xen-users] SAN / LVM backend and partitions

["Reinhard Brandstaedter" <Reinhard.Brandstaedter@xxxxxx>]

On Fri, 2007-01-19 at 11:18 -0200, Christopher G. Stach II wrote:
> You have a few basic choices:
> 
> 1. Export a single LV from dom0 as a full disk, allowing your domU to
> see the LV as an entire disk and use partition tables.
> 2. Export each single LV from dom0 as partitions, allowing your domU
to
> only see those partitions.
> 3. Export the VG device from dom0, allowing your domUs to see all LVs.
> 
> Since you're using a SAN, you may be aiming to support multiple Xen
> boxes on the same device(s).  If so, you're probably going to want to
> run CLVM.  The question is, "Where?"  If you use #1 or #2, your dom0s
> will have to participate in the cluster.  If you use #3, you push the
> clustering to the domUs (where I think it belongs.)  #3 is less
secure,
> however.

That's exactly what I want to do - booting several VMs from one
read-only rootfs (one LV). But I think I will run CLVM on the Dom0s and
use method #2. I haven't used CLVM yet, but I think it's easier to
configure it on 2-3 Dom0s than on every DomU?

Thanks,
Reinhard


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