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Re: [libvirt] "virsh setvcpus" does not work.



Hi Eric,

Thank you for the explanation.

On Wed, 15 Dec 2010 08:42:12 -0700
Eric Blake <eblake redhat com> wrote:
> > 
> > I tested "virsh setvcpus" command and it did not work like the following:
> > 
> >  # virsh setvcpus RHEL5.5GA_Guest.img 2
> >  error: internal error unable to execute QEMU command 'cpu_set': The command cpu_set has not been ound
> 
> qemu vcpu hot-plugging has been a sore spot for some time now.  My
> understanding is that an early implementation used to be upstream, but
> it was buggy, so current upstream does not support it.  RHEL has taken
> some efforts to provide vcpu hot-plugging beyond what upstream supports,
> but it is still a work in progress, and I haven't personally tested RHEL
> 6.0 to see how well it does (most of my vcpu hot-plug testing was done
> for RHEL 5.x with xen).
> 
> >  
> >  #
> > 
> > Has this problem been fixed already on upstream ?
> > 
> > o Test environment
> >   Host OS: RHEL6.0 (x86_64)
> >     qemu-kvm: 0.12.1.2-2.113.el6
> >     libvirt : 0.8.1-27.el6
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=533138 appears to be
> relevant to your situation, and mentions that the issue has been
> deferred to at least RHEL 6.1.

I see.


Thanks
Ken'ichi Ohmichi


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