Re: [Xen-users] Xen and SAN : snapshot XOR live-migration ?

[Tom Mornini <tmornini@xxxxxxxxxxxxxx>]

On Mar 23, 2007, at 12:51 AM, Tim Post wrote:

> On Thu, 2007-03-22 at 23:38 +0100, Franck ELIE wrote:
> > Please tell me if I am wrong :
> >
> > Xen needs LVM to perform domU snapshots and snapshots must be  
> > performed
> > by dom0.
> > By the way, a LVM volume group should not be used by more that one
> > kernel at the same time. So if we use a SAN storage, one volume group
> > should be activated on only one server and deactivated on the others.
> > But if we do that, it should not be possible to perform live  
> > migration
> > of domU.
> > My conclusion would be that we have to choose between snapshot or
> > live-migration, but with xen 3.0.3 we can not use both.
> Just use CLVM. While its suitability is still kind of in debate for
> heavy production use, its more than ample for such simple tasks if I
> understand your need correctly.
CLVM does not yet support snapshots and mirrors.

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