[fedora-virt] 3.13 - Nested KVM (vmx) totally broken?

[Richard W.M. Jones]

On Fri, Mar 14, 2014 at 04:11:13PM +0400, Vasiliy Tolstov wrote:
> 2014-03-14 15:58 GMT+04:00 Richard W.M. Jones <rjones at redhat.com>:
> > It could be there is another, less frequent, bug in nested KVM.
> > I'm assuming this is on Intel hardware?
> >
> > From the libguestfs point of view what you can do is to force TCG:
> >
> >     export LIBGUESTFS_BACKEND_SETTINGS=force_tcg
> >
> > Unfortunately this only has an effect in libguestfs >= 1.25.24.  We're
> > going to have the new version in Fedora 20 real soon -- probably
> > before the end of this month.  Or you can compile the Rawhide version
> > on F20.
> 
> 
> Thanks for answer. I'm not using libguestfs. I'm try tun vm inside vm
> via libvirt.

You can set the VM <domain type="qemu">.  Of course it'll run quite
slowly.

> is that possible to debug this issue ? How can i help?

Complete logs from the guest.
Any messages from qemu or the host.
& put all of that into a full bug report.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
libguestfs lets you edit virtual machines.  Supports shell scripting,
bindings from many languages.  http://libguestfs.org