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Posted to users@cloudstack.apache.org by Julien Garet <ju...@inria.fr> on 2012/11/27 17:40:14 UTC
Cloudstack + kvm : set arch = i686
Hello,
We have discovered something today we didn't expect... We are using CS 3.0.2 with KVM hypervisors. Our users want to be able to use 32 or 64 bits VMs, so, we have set up templates using 32 or 64 bits OSes (setting OS type 32 or 64 bits accordingly), but that does not have any impact on the VM deployed... arch option in the domain xml file is x86_64, whatever we choose as OS Type.
Is there a way to deploy 32bits VMs on 64bits hypervisors ?
------
Attention, changement d'adresse et de numéro de téléphone !
Julien GARET
DSI / SESI
Bureau B201
Inria Lille-Nord Europe
Bâtiment B, 6 rue Heloise
59650 Villeneuve d'Ascq
téléphone: 03.59.35.86.86
portable: 06.79.88.10.47
Re: Cloudstack + kvm : set arch = i686
Posted by Julien Garet <ju...@inria.fr>.
Ok, done : https://issues.apache.org/jira/browse/CLOUDSTACK-554
------
Attention, changement d'adresse et de numéro de téléphone !
Julien GARET
DSI / SESI
Bureau B201
Inria Lille-Nord Europe
Bâtiment B, 6 rue Heloise
59650 Villeneuve d'Ascq
téléphone: 03.59.35.86.86
portable: 06.79.88.10.47
----- Mail original -----
> De: "Edison Su" <Ed...@citrix.com>
> À: cloudstack-users@incubator.apache.org
> Envoyé: Mardi 27 Novembre 2012 22:06:44
> Objet: RE: Cloudstack + kvm : set arch = i686
> > -----Original Message-----
> > From: Julien Garet [mailto:julien.garet@inria.fr]
> > Sent: Tuesday, November 27, 2012 11:02 AM
> > To: cloudstack-users@incubator.apache.org
> > Cc: cloudstack-users@incubator.apache.org
> > Subject: Re: Cloudstack + kvm : set arch = i686
> >
> >
> > Le 27 nov. 2012 à 17:51, David Nalley <da...@gnsa.us> a écrit :
> >
> > > On Tue, Nov 27, 2012 at 11:40 AM, Julien Garet
> > > <ju...@inria.fr>
> > wrote:
> > >> Hello,
> > >>
> > >>
> > >> We have discovered something today we didn't expect... We are
> > >> using CS
> > 3.0.2 with KVM hypervisors. Our users want to be able to use 32 or
> > 64 bits
> > VMs, so, we have set up templates using 32 or 64 bits OSes (setting
> > OS type
> > 32 or 64 bits accordingly), but that does not have any impact on
> > the VM
> > deployed... arch option in the domain xml file is x86_64, whatever
> > we choose
> > as OS Type.
> > >>
> > >>
> > >> Is there a way to deploy 32bits VMs on 64bits hypervisors ?
> > >>
> > >>
> > >
> > > The arch of the operating system is different than the arch of
> > > the
> > > virtualized CPU (which is what I think you are referring to).
> > > What benefit do you expect to extract from having a virtualized
> > > 32bit
> > > CPU compared to a virtualized 64bit cpu? Do users that have
> > > physical
> > > machines in your environment note that you deployed a 32bit OS on
> > > a
> > > 64bit CPU?
> >
> > Our users are doing continous integration on the instances and they
> > have
> > noticed it wasn't a virtualized 32bits cpu ;-) It's a pain to work
> > for researchers
> > in computer science ! :-D
> >
> > The idea behind is KVM permits 32bit virtualization on 64bits
> > hardware, and
> > it's quite frustrating to just hide the truth (32bits OS on 64bits
> > hardware).
> >
> > Do we have a way to set kvm options on the guests or have
> > Cloudstack force
> > 32bits virtualization on 32bits templates ?
> Can you fire a bug about it? If the template is 32bit, need to set
> the cpu as 32bit.
> >
> > >
> > > --David
RE: Cloudstack + kvm : set arch = i686
Posted by Edison Su <Ed...@citrix.com>.
> -----Original Message-----
> From: Julien Garet [mailto:julien.garet@inria.fr]
> Sent: Tuesday, November 27, 2012 11:02 AM
> To: cloudstack-users@incubator.apache.org
> Cc: cloudstack-users@incubator.apache.org
> Subject: Re: Cloudstack + kvm : set arch = i686
>
>
> Le 27 nov. 2012 à 17:51, David Nalley <da...@gnsa.us> a écrit :
>
> > On Tue, Nov 27, 2012 at 11:40 AM, Julien Garet <ju...@inria.fr>
> wrote:
> >> Hello,
> >>
> >>
> >> We have discovered something today we didn't expect... We are using CS
> 3.0.2 with KVM hypervisors. Our users want to be able to use 32 or 64 bits
> VMs, so, we have set up templates using 32 or 64 bits OSes (setting OS type
> 32 or 64 bits accordingly), but that does not have any impact on the VM
> deployed... arch option in the domain xml file is x86_64, whatever we choose
> as OS Type.
> >>
> >>
> >> Is there a way to deploy 32bits VMs on 64bits hypervisors ?
> >>
> >>
> >
> > The arch of the operating system is different than the arch of the
> > virtualized CPU (which is what I think you are referring to).
> > What benefit do you expect to extract from having a virtualized 32bit
> > CPU compared to a virtualized 64bit cpu? Do users that have physical
> > machines in your environment note that you deployed a 32bit OS on a
> > 64bit CPU?
>
> Our users are doing continous integration on the instances and they have
> noticed it wasn't a virtualized 32bits cpu ;-) It's a pain to work for researchers
> in computer science ! :-D
>
> The idea behind is KVM permits 32bit virtualization on 64bits hardware, and
> it's quite frustrating to just hide the truth (32bits OS on 64bits hardware).
>
> Do we have a way to set kvm options on the guests or have Cloudstack force
> 32bits virtualization on 32bits templates ?
Can you fire a bug about it? If the template is 32bit, need to set the cpu as 32bit.
>
> >
> > --David
Re: Cloudstack + kvm : set arch = i686
Posted by Julien Garet <ju...@inria.fr>.
Le 27 nov. 2012 à 17:51, David Nalley <da...@gnsa.us> a écrit :
> On Tue, Nov 27, 2012 at 11:40 AM, Julien Garet <ju...@inria.fr> wrote:
>> Hello,
>>
>>
>> We have discovered something today we didn't expect... We are using CS 3.0.2 with KVM hypervisors. Our users want to be able to use 32 or 64 bits VMs, so, we have set up templates using 32 or 64 bits OSes (setting OS type 32 or 64 bits accordingly), but that does not have any impact on the VM deployed... arch option in the domain xml file is x86_64, whatever we choose as OS Type.
>>
>>
>> Is there a way to deploy 32bits VMs on 64bits hypervisors ?
>>
>>
>
> The arch of the operating system is different than the arch of the
> virtualized CPU (which is what I think you are referring to).
> What benefit do you expect to extract from having a virtualized 32bit
> CPU compared to a virtualized 64bit cpu? Do users that have physical
> machines in your environment note that you deployed a 32bit OS on a
> 64bit CPU?
Our users are doing continous integration on the instances and they have noticed it wasn't a virtualized 32bits cpu ;-) It's a pain to work for researchers in computer science ! :-D
The idea behind is KVM permits 32bit virtualization on 64bits hardware, and it's quite frustrating to just hide the truth (32bits OS on 64bits hardware).
Do we have a way to set kvm options on the guests or have Cloudstack force 32bits virtualization on 32bits templates ?
>
> --David
Re: Cloudstack + kvm : set arch = i686
Posted by David Nalley <da...@gnsa.us>.
On Tue, Nov 27, 2012 at 11:40 AM, Julien Garet <ju...@inria.fr> wrote:
> Hello,
>
>
> We have discovered something today we didn't expect... We are using CS 3.0.2 with KVM hypervisors. Our users want to be able to use 32 or 64 bits VMs, so, we have set up templates using 32 or 64 bits OSes (setting OS type 32 or 64 bits accordingly), but that does not have any impact on the VM deployed... arch option in the domain xml file is x86_64, whatever we choose as OS Type.
>
>
> Is there a way to deploy 32bits VMs on 64bits hypervisors ?
>
>
The arch of the operating system is different than the arch of the
virtualized CPU (which is what I think you are referring to).
What benefit do you expect to extract from having a virtualized 32bit
CPU compared to a virtualized 64bit cpu? Do users that have physical
machines in your environment note that you deployed a 32bit OS on a
64bit CPU?
--David