[ovirt-users] Is it possible to disable qxl video?

[Martin Polednik]

On 08/07/16 11:29 +0200, Michal Skrivanek wrote:
>
>> On 06 Jul 2016, at 14:06, Francesco Romani <fromani at redhat.com> wrote:
>>
>>
>> From: "Arman Khalatyan" <arm2arm at gmail.com>
>> To: "users" <users at ovirt.org>
>> Sent: Monday, July 4, 2016 11:52:24 AM
>> Subject: [ovirt-users] Is it possible to disable qxl video?
>>
>>
>> Hi,
>> I am doing PCI Passthrough for GPUs.
>> Is it possible somehow to disable/remove default video qxl?
>> thanks,
>> Arman,.
>> Hi,
>>
>> The 4.0 Vdsm allows you to run a headless VM, meaning a VM without graphic device/frontend.
>> Not sure Engine allows you that however.
>
>no it doesn’t

Even if engine allowed that, it may not be the correct solution.

Running headless with PCI passthrough is considered primary VGA
passthrough[1]. Using primary VGA passthrough without OVMF could cause
(will cause) quite a bit of headaches.

If you really want to try that, I assume using before_vm_start hook to
remove the video device should be enough.

[1] http://wiki.xenproject.org/wiki/Xen_VGA_Passthrough - it's
possible to read about primary and secondary passthrough between the
lines

>However, if QXL is the problem (why is that so?) then you can switch to VGA(or CIRRUS if this is still 3.6)
>
>> I'm afraid you will need to write a Vdsm hook.
>>
>> There could be simpler solutions depending on the Engine
>>
>> Bests,
>>
>> --
>> Francesco Romani
>> RedHat Engineering Virtualization R & D
>> Phone: 8261328
>> IRC: fromani
>> _______________________________________________
>> Users mailing list
>> Users at ovirt.org <mailto:Users at ovirt.org>
>> http://lists.ovirt.org/mailman/listinfo/users <http://lists.ovirt.org/mailman/listinfo/users>

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