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? Thank you in advance for all you do. Your work on this project has helped our community college greatly and our student even more. Because of this project we have be able to give students virtual resources to complete their labs from anywhere at anytime.
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 I don't know if this really works yet, the performance might be very poor, even under older vmware stuff it's poor, according to vmware: https://communities.vmware.com/docs/DOC-8970
Thank you in advance for all you do. Your work on this project has helped our community college greatly and our student even more. Because of this project we have be able to give students virtual resources to complete their labs from anywhere at anytime.
-- Mit freundlichen Grüßen / Regards Sven Kieske Systemadministrator Mittwald CM Service GmbH & Co. KG Königsberger Straße 6 32339 Espelkamp T: +49-5772-293-100 F: +49-5772-293-333 https://www.mittwald.de Geschäftsführer: Robert Meyer St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhausen Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen
----- 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
participants (3)
-
Francesco Romani -
Nathan Llaneza -
Sven Kieske