On 8/23/2018 6:34 AM, Moshe Levi wrote: > Recent change in tripleo [1] configure nova rx_queue_size tx_queue_size > config by default. > > It seem that this config option breaks booting vm with SR-IOV. See [2] > > The issues is because of this code [3] which configure virtio queue size > if the in the interface xml the driver is vhost or None. > > In case of SR-IOV the driver is also None and that why we get the error. > > A quick fix will be adding driver=vfio to [4] > > I just wonder if there are other interface in the libvirt xml which this > can have the same issue. > > [1] - > https://github.com/openstack/tripleo-heat-templates/commit/444fc042dca3f9a85e8f7076ce68114ac45478c7#diff-99a22d37b829681d157f41d35c38e4c5 > > > [2] - http://paste.openstack.org/show/728666/ > > [3] - https://review.openstack.org/#/c/595592/ > > [4] - > https://github.com/openstack/nova/blob/34956bea4beb8e5ba474b42ba777eb88a5eadd76/nova/virt/libvirt/designer.py#L123 > > Quick note, your [3] and [4] references are reversed. Nice find on this, it's a regression in Rocky. As such, please report a bug so we can track it as an RC3 potential issue. Note that RC3 is *today*. -- Thanks, Matt