<br><div class="gmail_quote">On Mon, Oct 12, 2009 at 10:30 AM, Dennis J. <span dir="ltr"><<a href="mailto:dennisml@conversis.de">dennisml@conversis.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="im">On 10/12/2009 06:17 PM, Grant McWilliams wrote:<br>
><br>
> On Mon, Oct 12, 2009 at 5:48 AM, Dennis J. <<a href="mailto:dennisml@conversis.de">dennisml@conversis.de</a><br>
</div><div class="im">> <mailto:<a href="mailto:dennisml@conversis.de">dennisml@conversis.de</a>>> wrote:<br>
><br>
> Hi,<br>
> I'm thinking about how to go about migrating our Xen VMs to KVM.<br>
> Migrating<br>
> the configuraton should be easy using the virsh dumpxml/define<br>
> commands but<br>
> what is the best way to transfer the (logical volume based) images<br>
> without<br>
> too much downtime for the guest system?<br>
><br>
> Can rsync operate on logical volumes? If so I could potentially use<br>
> "dd" to<br>
> transfer an initial copy of the image to the destination host and<br>
> then shut<br>
> down the guest, rsync the logical volumes which shouldn't take too<br>
> long as<br>
> not much data has to be transfered thanks to the initial "dd" and<br>
> then boot<br>
> the guest on the new machine.<br>
><br>
> Is something like this possible or would you do something different?<br>
><br>
> Regards,<br>
> Dennis<br>
><br>
><br>
> Can't you just use the LV in place with KVM?<br>
<br>
</div>I may be wrong about this but isn't running KVM on top of the Xen<br>
hypervisor a problem? Maybe this has changed but I thought in order to be<br>
able to use KVM you first have to disable the Xen hypervisor and boot into<br>
the regular Kernel.<br>
<div><div></div><div class="h5"><br>
Regards,<br>
Dennis<br></div></div></blockquote><div><br><br>But once you have your XEN DomU config file converted to KVM you could in effect just reboot the Dom0 into a standard kernel and use KVM.<br><br>Unless of course you're only moving one DomU to KVM then it wouldn't work.<br>
<br>Grant McWilliams <br></div></div>