----- Original Message -----
From: "Sven Kieske" <s.kieske@mittwald.de> To: users@ovirt.org Sent: Wednesday, October 8, 2014 8:02:29 AM Subject: Re: [ovirt-users] Nesting Hyper-V
On 08/10/14 00:39, Nathan Llaneza wrote:
Hello All,
I work for a educational institution, and we currently use oVirt in our datacenter. We are on the latest stable build of oVirt 3.4.4. Most of our hypervisors run CentOS 6.5; however, we have recently been asked if we could assign virtual hypervisors (Server 2012 R2) to some of our classes for learning purposes. I have been doing some research and found that I needed atleast kernel 3.10; therefore, I took one hypervisors and converted it to CentOS 7 fully patched. I also installed the nestedvt hook as described here <http://community.redhat.com/blog/2013/08/testing-ovirt-3-3-with-nested-kvm/>.
I am all researched/googled out, and I am having no luck. After I do a typical install of Server 2012 R2 it will not let me install the Hyper-V role. I quote "Hyper-V cannot be installed: A hypervisor is already running".
When I run the command cat /sys/module/kvm_intel/parameters/nested it comes back with a "Y". If I look in the host hooks it shows the nestedvt and macspoof. The VM has a custom property of macspoof = true.
Did I miss something? Is this possible? Has anyone done this before?
I guess you need the cpu param "hv_relaxed" there is a BZ open on it, see this blog for all cpu flags:
http://blog.wikichoon.com/2014/07/enabling-hyper-v-enlightenments-with-kvm.h...
-cpu ...,hv_relaxed,hv_spinlocks=0x1fff,hv_vapic,hv_time
there are plenty of bugs / improvements open, here is the list:
https://bugzilla.redhat.com/buglist.cgi?quicksearch=hv_relaxed&list_id=2902293
Initial "HyperV" enlightnement support was added to oVirt 3.5.0: (e.g. : http://gerrit.ovirt.org/#/c/30254/ http://gerrit.ovirt.org/#/c/30255/ ) More optimization will come soon, depending on libvirt availability. Bests, -- Francesco Romani RedHat Engineering Virtualization R & D Phone: 8261328 IRC: fromani