Comment 9 for bug 1286256

@Lars,

>I don't think this is the same issue. This is clearly a problem with
>the emulator hanging -- one can replicate the problem by simply
>running "libguestfs-test-tool". It only happens when attempting to
>use nested KVM in an environment in which nested KVM does not work
>correctly.

 What do you mean by the above "use nested KVM in an environment in which nested KVM does not work
correctly" ? How does one know that ?

Using qemu/libvirt tools, nested KVM works just fine and I have been using nested KVM for while now, until I hit the libguests issue thats only thru openstack Nova usecase.