On 27 Jun 2014, at 06:06, Punit Dambiwal wrote: > Hi, > > I don't want to faking a CPU model.....my main concern is to create the > homogeneous environment,so the guest can be migrate between hosts with > diffrent CPU (If i can change the CPU model with the custom name).
Then you just want to set the CPU model in Cluster…that's it Thanks, michal > > > > On Thu, Jun 26, 2014 at 7:48 PM, Michal Skrivanek > <michal.skriva...@redhat.com> wrote: > > On Jun 26, 2014, at 13:42 , Sven Kieske <s.kie...@mittwald.de> wrote: > > > > > > > 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 > > yes, that's what we have at cluster level and there is an RFE for per-VM level > > > > > But I still do not see the benefit of "faking" a certain cpu model. > > there is no faking, it is always real for the guest. > so yes, you can make it look(and actually perform) less capable so you can > migrate across heterogenous hosts; or make it less capable just if you wish > so, but that's it. > > Thanks, > michal > > > > > > > -- > > 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 > >
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