[Users] Nested virt failing

[Joop]

Dax Kelson wrote:
> I have Fedora 18 with ovirt running. I have vdsm-hook-nestedvt.noarch
> installed on all the nodes.
>
> The nodes are all identical with Intel i5-2400 CPUs (SandyBridge).
>
> When I try to boot a nested virtual machine (L2) instead of a ovirt
> virtual machine (L1), the kernel starts to load, and then that nested
> virtual machines (L2) pauses.
>
> On the host running Fedora 18 dmesg shows this message:
>
> nested_vmx_run: VMCS MSR_{LOAD,STORE} unsupported
>
> Reading this bug https://bugzilla.redhat.com/show_bug.cgi?id=892240
>
> It looks like if the Fedora 18 ovirt nodes started the the L1 using
> the "core2duo" CPU flag instead of host pass through it might work?
>
> How do I do that, or are there other solutions?
>
>   
Are you sure nested is enabled?
Check: cat /sys/module/kvm_intel/parameters/nested should say Y
Check your cluster for what cpu is used.

I have a test system where a core i3 isn't recognised as a sandy bridge 
but a core i7 is. Have tried fiddling with libvirts xml file but no go.

Regards,

Joop