On Thu, 2013-12-19 at 11:39 -0700, Jim Fehlig wrote: > Stefan Bader wrote: > > Oh, just while talking about setdefault. Jim, this is one of the odd things when > > moving from xm to xl stack from libvirt: libvirt defaults to the netfront NIC > > when no model is specified and sets the type. The libxl setdefault function sets > > the model to rtl8139 but leaves the type untouched. > > The xend toolstack always creates both emulated and vif devices unless > 'type=netfront' is explicitly specified. As you say, the guest gets to > choose what to do with them. E.g. PXE boot using the emulated device, > or have the driver for the PV device unplug the emulated one. I don't > think libxl supports this right? It should do, in fact I thought it was the default. How are you initialising the libxl_device_nic? Type == VIF_IOEMU (which is the default for a VIF on an HVM guest) means both emulated and pv. (there were bugs in the semantics here in very early versions of libxl, but I thought they were fixed even before 4.2) I don't think there is an option to have just the emulated device -- there is always a PV VIF there even if the guest doesn't use it. Ian. -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list