[libvirt-users] setvcpus libvirt 1.2.9

[Martin Kletzander]

On Wed, Nov 05, 2014 at 11:35:37AM +0100, Thomas Stein wrote:
>Hello.
>
>I'm struggeling a little bit with the setvcpus command. I'm trying now
>to get this running for a linux VM. Here is what i have:
>
> <vcpu placement='auto' current='2'>4</vcpu>
>
>Now the VM is starting with 2 CPUs. When i try to increase the number of
>CPUs i get:
>
>setvcpus dev --guest 4
>error: invalid argument: requested vcpu count is greater than the count
>of enabled vcpus in the domain: 4 > 2
>

This sets the current number of cpus and that cannot be changed live
(unless you have cpu hot(un)plug).

>Strange thing is when i set in the xml file:
>
> <vcpu placement='auto' current='4'>4</vcpu>
>
>the VM starts with 4CPUs and setting the CPUs works.
>

Because the max is 4 and you're setting the "current" number.

>I can do:
>
>setvcpus dev --guest 2
>
>and:
>
>setvcpus dev --guest 4
>
>Is this a bug? Should i try to upgrade to 1.2.10? There seem to be a lot
>of changes in it regarding setvcpus.
>
>thanks and cheers
>t.
>
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