I have file a bug https://bugs.launchpad.net/nova/+bug/1034216 and upload a patch https://review.openstack.org/#/c/11008/
2012/8/8 Dan Wendlandt <d...@nicira.com> > Hi Emilien, > > I know of customers using virtio with Quantum, but I think they may have > modified the template directly, as you mention below. > > This code in nova changed quite a bit from Essex -> Folsom. Looking at > nova/virt/libvirt/vif.py, I noticed that whoever added the > libvirt_use_virtio_for_bridges flag did not add it to the > LibvirtOpenVswitchDriver class. Based on the XML you show below, my guess > would be that if you add the following lines prior to the return statement > of the plug() method of that class, you would get the right XML: > > if FLAGS.libvirt_use_virtio_for_bridges: > conf.model = "virtio" > > That said, I haven't tested it. > > Can you file a bug on this in nova? Thanks, > > Dan > > > On Tue, Aug 7, 2012 at 2:57 PM, Emilien Macchi < > emilien.mac...@stackops.com> wrote: > >> Hi Stackers, >> >> >> I'm talking with Sebastien >> Han<http://www.sebastien-han.fr/blog/2012/07/19/make-the-network-of-your-vms-fly-with-virtio-driver>about >> VirtIO Driver for network interfaces. >> >> We have two setup : >> >> 1) Ubuntu 12.04 / Essex / KVM >> network_manager=*nova.network*.manager.*VlanManager* >> libvirt_use_virtio_for_bridges=true >> >> 2) Ubuntu 12.04 / Essex / KVM >> network_manager=nova.network.quantum.manager.QuantumManager >> >> linuxnet_interface_driver=nova.network.linux_net.LinuxOVSInterfaceDriver >> libvirt_use_virtio_for_bridges=true >> >> What we have seen : >> >> - VMs booting from first setup have VirtIO driver for networking (Gigabit >> ready). Here is the libvirt.xml for network part : >> >> <interface type='bridge'> >> (...) >> <model type='virtio'/> >> (...) >> </interface> >> >> - VMs booting from second setup (with Quantum) don't use VirtIO driver >> (No gigabit). Here is the libvirt.xml for network part : >> >> <interface type='ethernet'> >> <target dev='tapxxxxx' /> >> <mac address='xxxx' /> >> <script path='' /> >> </interface> >> >> The only one way I found to use VirtIO driver with Quantum to modify >> /usr/share/pyshared/nova/virt/libvirt.xml.template file and add : >> >> <model type='virtio'/> >> (after line 125) >> >> So you must have something like this : >> <interface type='ethernet'> >> <target dev='${nic.name}' /> >> <mac address='${nic.mac_address}' /> >> <script path='${nic.script}' /> >> <model type='virtio'/> >> </interface> >> >> And restart LibVirt service : >> service libvirt-bin restart >> >> >> What do you think about that ? Should we modify the template to get >> Gigabit capacity or is there something wrong in my configuration ? >> >> >> Best regards >> >> -- >> Emilien Macchi >> *System Engineer* >> *www.stackops.com >> >> | *emilien.mac...@stackops.com** *|* skype:emilien.macchi* >> * <http://www.stackops.com> >> * >> >> * >> >> ******************** ADVERTENCIA LEGAL ******************** >> Le informamos, como destinatario de este mensaje, que el correo >> electrónico y las comunicaciones por medio de Internet no permiten asegurar >> ni garantizar la confidencialidad de los mensajes transmitidos, así como >> tampoco su integridad o su correcta recepción, por lo que STACKOPS >> TECHNOLOGIES S.L. no asume responsabilidad alguna por tales circunstancias. >> Si no consintiese en la utilización del correo electrónico o de las >> comunicaciones vía Internet le rogamos nos lo comunique y ponga en nuestro >> conocimiento de manera inmediata. 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