On 03/05/2012 04:49 AM, David M. Barlieb wrote: Hi David, The current kvm doesn't support vCPU hotplug, which will be supported in the future, so you can't change vCPU number for a running guest, it's a expected result. Regards, Alex

Thanks, that worked. From: Nitin kumar [mailto:nitin12tyagi@gmail.com] Sent: Tuesday, March 06, 2012 10:20 AM To: Alex Jia Cc: David M. Barlieb; libvirt-users(a)redhat.com Subject: Re: [libvirt-users] can't add cpu's to virtual guest Hi All, We need to down the guest and edit the xml file and make the change on this . To save the change in xml configuration file need to give the command #virsh definr <guest.xml> It will save permanetly ...start the guest ... No way to change this on line .... On Mon, Mar 5, 2012 at 8:30 AM, Alex Jia <ajia@redhat.com<mailto:ajia@redhat.com>> wrote: On 03/05/2012 04:49 AM, David M. Barlieb wrote: I have a rhel6.0 server running kvm. I have recently needed to add additional cpu's to some of the guests but cannot do it via virt-manager, can't doit using virt, and can't do it by vi the guest.xml file. Is this a bug or am I missing something? Hi David, The current kvm doesn't support vCPU hotplug, which will be supported in the future, so you can't change vCPU number for a running guest, it's a expected result. Regards, Alex Thanks, DaveB _______________________________________________ libvirt-users mailing list libvirt-users@redhat.com<mailto:libvirt-users@redhat.com> https://www.redhat.com/mailman/listinfo/libvirt-users _______________________________________________ libvirt-users mailing list libvirt-users@redhat.com<mailto:libvirt-users@redhat.com> https://www.redhat.com/mailman/listinfo/libvirt-users -- With Best Regards, Nitin Kumar Sr. System Engineer-Unix (CSC India Pvt. Ltd, Noida ) +91-9999706444