Re: [libvirt-users] <qemu:commandline> domain XML tag is not working?

On Mon, Apr 20, 2015 at 10:37:13PM +0800, Chengyuan Li wrote: > Hi, > > I tried to enable virtio-blk data plane feature for VMs in my openstack > environment, the hypervisor is ubuntu 14.04, libvirt 1.2.2 [I haven't tested the virtio-blk data plane myself.] This libvirt version seems a little old (from March 2014), you might want to move to a bit newer. > and QEMU 2.0. > As nova doesn't support that parameter yet, I did belows > > 1. nova boot a VM with raw disk image. > 2. nova stop the VM. > 3. run "virsh edit <instance-id>" on the hyprvisor node, and adding below > into instance xml just before </domain>. You're modifying the guest definition behind Nova's back, so you get to keep all the pieces if something breaks. :-) > However, the <qemu:commandline> part is ignored and not saved after closing > virsh edit, seems that libvirt rejected these changes. Is there any XML > syntax error here? Or libvirt doesn't support <qemu:commandline> tag? > > <qemu:commandline> > <qemu:arg value='-set'/> > <qemu:arg value='device.drive-virtio-disk0.x-data-plane=on'/> > </qemu:commandline> -- /kashyap