[ovirt-users] Turn on "Nested Virtualization" on the "hosted-engine"

[Michal Skrivanek]

> On 27 Dec 2017, at 13:06, Martin Sivak <msivak at redhat.com> wrote:
> 
> Hi,
> 
> it might be a good idea to install vdsm-hooks-nestedvt and
> vdsm-hook-macspoof on the host as described for example here:
> https://community.redhat.com/blog/2013/08/testing-ovirt-3-3-with-nested-kvm/
> 
> Those two hooks will configure the kvm module properly and allow
> dhcp/pxe to be used from within the nested VM.

Yes. Though it’s likely not going to work out of the box anyway due to older kernel.
See a guide from Ladi[1], there was also a presentation about nested hyper-v on KVMForum 2017 

Thanks,
michal

[1] https://ladipro.wordpress.com/2017/02/24/running-hyperv-in-kvm-guest/ <https://ladipro.wordpress.com/2017/02/24/running-hyperv-in-kvm-guest/>

> 
> Best regards
> 
> --
> Martin Sivak
> SLA / oVirt
> 
> On Wed, Dec 27, 2017 at 9:05 AM, Michal Skrivanek
> <michal.skrivanek at redhat.com> wrote:
>> 
>> 
>> On 25 Dec 2017, at 13:03, Roman Drovalev <drovalev at miac.kaluga.ru> wrote:
>> 
>>> I'm not sure I understand the layering - hyper-V on oVirt or vice-versa?
>> 
>> the layering: oVirt host -> Hyper-V_VM on oVirt -> VM on Hyper-V_VM
>> 
>> CentOS based on linux kernel. I manual modified linux kernel parametrs.
>> 
>> 
>> if you modified the kernel parameters already (which you did, as seen in
>> screen shot your cmdline does have nested virt param) then there’s nothing
>> else to do in the GUI, your host should support nested virtualization.
>> I’m not sure why do you need SR-IOV but that’s not going to work on top of
>> hyperv
>> 
>> 
>> oVirt-engine based on oVirt API. How to manually change the parameters of
>> ovirt-engine through API?
>> 
>>> In any case, I assume an additional host is needed, the host hosting the
>>> Hosted-Engine VM cannot be changed with those parameters when the HE is up.
>>> Y.
>> 
>> It's impossible, the second host is now - Hyper-V with working VM's.
>> 
>> 25.12.2017 12:19, Yaniv Kaul
>> 
>> 
>> 
>> On Mon, Dec 25, 2017 at 10:14 AM, Roman Drovalev <drovalev at miac.kaluga.ru>
>> wrote:
>>> 
>>> Thanks for the quick response.
>>> 
>>>> You probably need an additional host.
>>> 
>>> I'm migrating from Hyper-V at the moment there is no way to add a second
>>> host.
>>> 
>>> 
>>> 25.12.2017 10:43, Yaniv Kaul пишет:
>>>> What are you trying to achieve?
>>> 
>>> "Nested Virtualization" . I need run on Hyper-V one VM on the my oVirt
>> 
>> 
>> I'm not sure I understand the layering - hyper-V on oVirt or vice-versa?
>> In any case, I assume an additional host is needed, the host hosting the
>> Hosted-Engine VM cannot be changed with those parameters when the HE is up.
>> Y.
>> 
>>> 
>>> 
>>> 
>>> 
>>> _______________________________________________
>>> Users mailing list
>>> Users at ovirt.org
>>> http://lists.ovirt.org/mailman/listinfo/users
>> 
>> 
>> 
>> --
>> С уважением, Дровалев Роман
>> инженер ГБУЗ "МИАЦ",
>> Калужской области.
>> тел. 4842 705 004
>> 
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>> 
>> 
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