From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Egger, Christoph" <chegger@amazon.de>
Subject: Re: Hypervisor Migration
Date: Wed, 17 Jul 2013 15:12:48 +0200
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To: emdel <emdel@playhack.net>
Cc: George Dunlap <George.Dunlap@eu.citrix.com>, "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
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On 17.07.13 14:33, emdel wrote:
> On Wed, Jul 17, 2013 at 11:55 AM, George Dunlap
> <George.Dunlap@eu.citrix.com <mailto:George.Dunlap@eu.citrix.com>> wrote:
> 
>     What do you mean by 'hypervisor migration'?  
> 
> 
> Hi George, 
> hypervisor migration for me is the following scenario:
> imagine a machine m running an hypervisor h with N guests. You want to
> migrate this situation on a machine n running an hypervisor i.
> On top of the hypervisor i you will have the hypervisor h with its N
> guests. I hope it's clear now.

So let me draw a picture. If it is correct then that means on machine n
hypervisor i must support nested virtualization.


machine m:


   guest 1   guest 2   guest N
     |         |          |
     +---------+----------+
               |
            hypervisor h


machine n:

   guest 1   guest 2   guest N
     |         |          |
     +---------+----------+
               |
            hypervisor h        guest X  guest Y
               |                   |        |
               +-------------------+--------+
                         |
                     hypervisor i


Christoph