Re: [Xen-devel] How to activate all VPCUS for a domU?

["Omer K." <okhalid.cern@xxxxxxxxx>]

Hi,

Apologies for earlier spamming the xen-devel list but this message might be relevant as I think there is a bug in xm/create.py where 'vcpu_avail' option doesn't get properly set.

I manage to solve the issue of activating all of the vcpus by apply a modified version of the patch earlier discussed:

http://old-list-archives.xen.org/archives/html/xen-users/2010-09/msg00353.html

The following patch fixed the issue for me and after this bitmask value was activating required vpcu's read from the xen configuration file. Prior to that, vpcu_avail was always set to '1' (also verified from 'xenstore-ls -f' output).
--- create.py   
+++ create.py.af  

         if maxvcpus and vcpus:
             config.append(['vcpus', vcpus])
-            config.append(['vcpu_avail', (1 << vcpus) -1)])
+            config.append(['vcpu_avail', getattr(vals, 'vcpu_avail'])

     def add_conf(n):
         if hasattr(vals, n):
Regards.
Omer

On Fri, Nov 16, 2012 at 6:21 PM, Mats Petersson <mats.petersson@xxxxxxxxxx> wrote:

On 16/11/12 18:09, Omer K. wrote:

Hi,

I have set maxvcpus and vcpus options in my domU configuration file, and I can see that X number of vcpu are set for the domU.

I tried to activate all the vpcus by using vpcu_avail option (using decimal to represent vpcu bitmask e.g. 24=11000) but it doesn't seem to work, and only the first vpcu is activated (i.e. has -b- state) while all other vpcu's set for the domU are in the paused state.

Can any one share more insights on how to activate all the vpcu's for the guest domain ?

Thanks

This definitely belongs to the Xen-Users list, not on Xen-Devel. Please don't post to both lists, it just confuses people.

--
Mats

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