[Users] nested KVM

[Nathanaël Blanchet]

Hello,

I've tried many times to run a node as a guest in ovirt following 
http://wiki.ovirt.org/wiki/Vdsm_Developers#Running_Node_as_guest_-_Nested_KVM 
. The result is that I'm able to register such a host in engine, but it 
is impossible to start any vm on it. If I boot on an ISO, I can see the 
first prompt and move between the items. But since I begin the 
installation I have a blank screen and the vm goes into pause mode in 
vit-manager. Then I have no way else than rebooting the hypervisor guest 
because it is impossible to resume. When I get logs on the real host, I 
can find this :
arning : x86Decode:1306 : Preferred CPU model Westmere not allowed by 
hypervisor; closest supported model will be used
Sep 25 17:11:59 khamsin libvirtd[23053]: 2012-09-25 15:11:59.384+0000: 
23054: warning : x86Decode:1306 : Preferred CPU model Westmere not 
allowed by hypervisor; closest supported model will be used
Sep 25 17:12:19 khamsin libvirtd[23053]: 2012-09-25 15:12:19.150+0000: 
23055: warning : x86Decode:1306 : Preferred CPU model Westmere not 
allowed by hypervisor; closest supported model will be used
Sep 25 17:45:48 khamsin libvirtd[23053]: 2012-09-25 15:45:48.342+0000: 
23058: warning : x86Decode:1306 : Preferred CPU model Westmere not 
allowed by hypervisor; closest supported model will be used
Sep 25 18:07:05 khamsin libvirtd[23053]: 2012-09-25 16:07:05.834+0000: 
23058: warning : x86Decode:1306 : Preferred CPU model Nehalem not 
allowed by hypervisor; closest supported model will be used
Sep 25 18:44:47 khamsin libvirtd[23053]: 2012-09-25 16:44:47.340+0000: 
23057: warning : x86Decode:1306 : Preferred CPU model Penryn not allowed 
by hypervisor; closest supported model will be used

As you can see, I have tried many cpu type for launching this guest 
hypervisor, but none of them is accepted by the hypervisor. Plus, I've 
modified each time the family type in the cluster tab, but it is the same.
On the hist:
#virsh capabilities gives
<cpu>
       <arch>x86_64</arch>
       <model>Westmere</model>
       <vendor>Intel</vendor>

Thanks for your help

-- 
Nathanaël Blanchet

Supervision réseau
Pôle exploitation et maintenance
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