Re: [Xen-users] Re: Having Windows XP HVM on qcow diskfile and snapshots.

[Javier Guerra <javier@xxxxxxxxxxx>]

On Thu, May 21, 2009 at 10:32 AM, Geert Janssens <info@xxxxxxxxxxxx> wrote:
> * The Guest machines are all configured to get their IP address via dhcp, and
> each guest config has it's own unique MAC address. So each guest will appear
> on their own ip address
> * There is no data on the guest disk images (only OS and applications). All
> variable data is accessible via samba shares. So I don't delete anything
> valuable by overwriting a disk image with the new master.

if there's no state on those images, you can mount them as readonly
and use the same for all DomUs.  of course, any update means shutting
down

> It works ok, but I'm using a lot of wasted diskspace. I still intend to try
> and setup an LVM based disk image and use LVM snapshots for each guest. This
> would give me essentially the same thing but with less wasted diskspace. The
> experiment will have to wait until I find some time for it though.

note that using snapshots and a 'master' (either LVM or qcow) means
you can't change the 'master' and expect the snapshots to catch the
updates


-- 
Javier

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