Libvirt: unable to launch a VM with direct OVS plugging neutron drivers

[Gary Kotton]

When launching a VM with the NSX neutron driver we get the following exception:

^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00mTraceback (most recent call last):
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m File "/opt/stack/nova/nova/compute/manager.py", line 2152, in _build_resources
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m yield resources
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m File "/opt/stack/nova/nova/compute/manager.py", line 2006, in _build_and_run_instance
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m block_device_info=block_device_info)
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 2444, in spawn
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m block_device_info=block_device_info)
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 4516, in _create_domain_and_network
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m xml, pause=pause, power_on=power_on)
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 4446, in _create_domain
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m guest.launch(pause=pause)
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m File "/opt/stack/nova/nova/virt/libvirt/guest.py", line 141, in launch
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m self._encoded_xml, errors='ignore')
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 195, in __exit__
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m six.reraise(self.type_, self.value, self.tb)
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m File "/opt/stack/nova/nova/virt/libvirt/guest.py", line 136, in launch
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m return self._domain.createWithFlags(flags)
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m File "/usr/local/lib/python2.7/dist-packages/eventlet/tpool.py", line 183, in doit
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m result = proxy_call(self._autowrap, f, *args, **kwargs)
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m File "/usr/local/lib/python2.7/dist-packages/eventlet/tpool.py", line 141, in proxy_call
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m rv = execute(f, *args, **kwargs)
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m File "/usr/local/lib/python2.7/dist-packages/eventlet/tpool.py", line 122, in execute
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m six.reraise(c, e, tb)
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m File "/usr/local/lib/python2.7/dist-packages/eventlet/tpool.py", line 80, in tworker
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m rv = meth(*args, **kwargs)
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m File "/usr/local/lib/python2.7/dist-packages/libvirt.py", line 900, in createWithFlags
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m if ret == -1: raise libvirtError ('virDomainCreateWithFlags() failed', dom=self)
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00mlibvirtError: unsupported configuration: scripts are not supported on interfaces of type bridge
^[[01;31m2015-09-21 22:08:48.964 TRACE nova.compute.manager ^[[01;35m[instance: a8f73028-1493-4ad2-b957-1d75422b3ff2] ^[[00m

This is a result of the patch https://review.openstack.org/#/c/199092/

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/225585

[John Garbutt (johngarbutt)]

[10:03:46] <salv-orlando> johnthetubaguy: I'm not sure if garyk mentioned that this is not only affecting the NSX plugin, but all the plugins that do direct OVS plugging

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/225585
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=c85137c8b74880f849612d32175d4c572d6ba482
Submitter: Jenkins
Branch: master

commit c85137c8b74880f849612d32175d4c572d6ba482
Author: garyk <email address hidden>
Date: Mon Sep 21 08:51:19 2015 +0000

    libvirt: fix direct OVS plugging

    The commit cd1766287862162aadf1c111a4807f7618f34578 introduced a error
    when doing direct OVS plugging.

    Closes-bug: #1497896

    Change-Id: I6f0ac3085d2dc4345dddd4647fccb540941669e5