How to export CPUs as Cores not Sockets

[Ahmad Saif <ah...@gmail.com>]

Dear CloudStackers,

I've hit a very weird situation last night, I've a VM that's running 
(Windows 2008 Standard R2 64bit) which was working on a 4 cores offer. 
when I upgraded the service offer to 8 cores and checked the VM I 
notecied that it still have only 4 cores !!

I dig a little bit on the windows machine itself, and found that it see 
the CPUs as sockets not cores and this version of windows support only 
up to 4 cores.

I'm running CloudStack on KVM hosts, so when I checked the VM XML file 
on the host I saw that the CPU is exported as following :

<vcpu>4</vcpu>

and it should be exported as following:

<vcpu>4</vcpu> <cpu>
<topology sockets='1' cores='4' threads='1'/>
</cpu>

So it export the CPU as cores not socket. how can I change this behavior ?

Any suggestions ?

Thanks

RE: How to export CPUs as Cores not Sockets

[Anthony Xu <Xu...@citrix.com>]

Hi Ahmad,

CS doesn't support export CPU topology to guest VM even though some hypervisor supports it.
Like you described, this feature might be critical to some Guest OSes , like windows 2008 server.
Please file a feature request for this.

Anthony

> -----Original Message-----
> From: Ahmad Saif [mailto:ahmad.abosaif@gmail.com]
> Sent: Tuesday, January 08, 2013 2:24 AM
> To: cloudstack-users@incubator.apache.org
> Subject: How to export CPUs as Cores not Sockets
> 
> Dear CloudStackers,
> 
> I've hit a very weird situation last night, I've a VM that's running
> (Windows 2008 Standard R2 64bit) which was working on a 4 cores offer.
> when I upgraded the service offer to 8 cores and checked the VM I
> notecied that it still have only 4 cores !!
> 
> I dig a little bit on the windows machine itself, and found that it see
> the CPUs as sockets not cores and this version of windows support only
> up to 4 cores.
> 
> I'm running CloudStack on KVM hosts, so when I checked the VM XML file
> on the host I saw that the CPU is exported as following :
> 
> <vcpu>4</vcpu>
> 
> and it should be exported as following:
> 
> <vcpu>4</vcpu> <cpu>
> <topology sockets='1' cores='4' threads='1'/>
> </cpu>
> 
> So it export the CPU as cores not socket. how can I change this
> behavior ?
> 
> Any suggestions ?
> 
> Thanks
> 
>