On Wed, Mar 26, 2014 at 09:31:17AM +0000, Gonglei (Arei) wrote: > > > > > > I use ethernet vif for VM (libvirt 1.1.0 qemu 1.5.1). xml as such > > > > > > <interface type='ethernet'> > > > <script path='' /> > > > <target dev='tap_mq'/> > > > <mac address='52:54:00:19:9e:4e'/> > > > <model type='virtio' /> > > > <driver name='vhost' queues='2'/> > > > </interface> > > > > > > tap_mq is a tap device with multi_queue property which was created > > on host by ip command, such as follows > > > #ip tuntap add tap_mq mode tap multi_queue > > > > > > I want to use multiple queue feature for this vif so I set > > > queues='2' in > > xml. > > > > > > When start VM , an error occurs > > > "error: unsupported configuration: Multiqueue network is not > > supported for: ethernet". > > > This error is reported from function qemuBuildInterfaceCommandLine > > > > > > /* Currently nothing besides TAP devices supports multiqueue. */ > > > if (net->driver.virtio.queues > 0 && > > > !(actualType == VIR_DOMAIN_NET_TYPE_NETWORK || > > > actualType == VIR_DOMAIN_NET_TYPE_BRIDGE)) { > > > virReportError(VIR_ERR_CONFIG_UNSUPPORTED, > > > _("Multiqueue network is not supported > > for: %s"), > > > virDomainNetTypeToString(actualType)); > > > return -1; > > > } > > > > > > The comment specifies that only TAP device supports multiqueue. But > > VIR_DOMAIN_NET_TYPE_ETHERNET is also TAP device I think. > > > > Even though the device is TAP device indeed, it's not from the libvirt > > POV. Libvirt doesn't examine the target dev to see if it is TAP, > > physical NIC, sit, ... whatever. > > Yep, but I think libvirt should provide this ability which process > multi_queue of ethernet type. And the result is guaranteed by the > emulator, such as Qemu.
Really you'd be better off not using type=ethernet at all. If there is something preventing you doing that, then it would be a better use of time to solve that rather than add more features to type=ethernet which we don't want anyone to have to use. Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :| -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list