Our system tests are using nested virtualization. [1]

Here the relevant part :

Make sure that virtualization extension is enabled on the CPU, otherwise, you might need to enable it in the BIOS. Generally, if virtualization extension is disabled, dmesg log would contain a line similar to:

    kvm: disabled by BIOS

Verify nested virtualization is enabled

    $ cat /sys/module/kvm_intel/parameters/nested

This command should print `Y` if nested virtualization is enabled, otherwise,
enable it the following way:

Edit `/etc/modprobe.d/kvm-intel.conf` and add the following line:

    options kvm-intel nested=y

[1] http://ovirt-system-tests.readthedocs.io/en/latest/docs/general/installation.html

On Sat, Mar 4, 2017 at 3:46 PM, Luca 'remix_tj' Lorenzetto <lorenzetto.luca@gmail.com> wrote:

Hello,

we're installing a small ovirt cluster for hosting some test
environments at work. We're interested in testing VM running
hypervisors (i.e ovirt itself or a small openstack deployment).

Is there any documentation showing how to enable nested virtualization in ovirt?

I've seen that while adding an host to the cluster there is the
opportunity to flag "Nested Virtualization" option, but i didn't
understand if other packages and configs are required.

Our environment is running latest ovirt 4.1 installed with ovirt-node-ng.

Luca

--
"E' assurdo impiegare gli uomini di intelligenza eccellente per fare
calcoli che potrebbero essere affidati a chiunque se si usassero delle
macchine"
Gottfried Wilhelm von Leibnitz, Filosofo e Matematico (1646-1716)

"Internet è la più grande biblioteca del mondo.
Ma il problema è che i libri sono tutti sparsi sul pavimento"
John Allen Paulos, Matematico (1945-vivente)

Luca 'remix_tj' Lorenzetto, http://www.remixtj.net , <lorenzetto.luca@gmail.com>
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