Am 26.06.2014 13:28, schrieb Michal Skrivanek:
> 
> On Jun 26, 2014, at 13:18 , Dan Kenigsberg <dan...@redhat.com> wrote:
> 
>> On Wed, Jun 25, 2014 at 11:19:17AM +0000, Sven Kieske wrote:
>>>
>>>
>>> Am 25.06.2014 11:43, schrieb Punit Dambiwal:
>>>> Hi Sven,
>>>>
>>>> Please let me know which VDSM hook can be used for the same,is there any
>>>> hook available for the same... ??
>>>
>>> I don't know any hook that does this, it should be relatively simple,
>>> though.
>>> Maybe someone else can assist, CC'ing Dan:
>>>
>>> Do you know of a hook that manipulates the emulated CPU model?
>>
>> Within the Vdsm code tree, only faqemu does that (and it only drops,
>> causing qemu to do its best). You can build on top of faqemu to set to
>> your favorite guest cpu.
>>
>> However, I think that Engine was once capable of setting a specific
>> cpuType - is it still possible without hacking its DB, Arik?
> 
> I'm not sure what do you actually mean
> hide what from whom?
> the guest sees particular CPU, there's nothing like "Virtual xyz", it either 
> sees flags matching e.g. Nehalem or not. You can select different CPU at the 
> cluster level if you wish, and that's what the guest will see, regardless 
> what your host has
> 
> faqemu is changing the configured CPU type to fully emulated CPU…I don't 
> think you meant that...

I guess he refers to the cpu_model mentioned here:
http://docs.openstack.org/trunk/config-reference/content/list-of-compute-config-options.html

But I still do not see the benefit of "faking" a certain cpu model.


-- 
Mit freundlichen Grüßen / Regards

Sven Kieske

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