Re: [ovirt-users] Nesting Hyper-V

From: "Sven Kieske" <s.kieske(a)mittwald.de&gt; To: users(a)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-kv...;. > > > 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-kv... -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_i...