Re: [Xen-users] High availability and live migration with just LVMand hardware fencing

[Bart Coninckx <bart.coninckx@xxxxxxxxxx>]

----- Original message -----
> > In case of Windows HVM guests quite a challenge guess ... "suspend" in Vmware
> > context I believe really tells the OS to suspend (I think because it relies on
> > the installed Vmware Tools)
>
> What's wrong with backing up from the clients?

You mean the guests? Well, it could be they get corrupted while for instance failing over because a xen host dies. Quickest restore path is then a snapshot restore and then a guest data restore.

> > If GFS can bring something to the table for this, I'll check it out, but it's
> > again one more layer of unsupported complexity to SLES.
>
> Doesn't GFS require cLVM?  Maybe that's just a requirement with RHEL.

I guess it does. Neither are available on sles, so would require installation from source.

> Or maybe I remembered it wrong.  At any rate, it doesn't help you with
> your HVM guests because they'll have no concept or knowledge of the
> underlying disk.
>
> John
>

Wait a sec, so i still would have no snapshots? How is this achieved then with hvm guests?
Do they need to be stopped for backups? Live migration still works, right? (Provided i have clvm)

>
> --
> John Madden
> Sr UNIX Systems Engineer
> Ivy Tech Community College of Indiana
> jmadden@xxxxxxxxxxx

Cheers,

Bart

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