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[Bug 1558017] [NEW] Error while creating instance after implementing OVS in Liberty

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: shrinath <shrinath.suresh@xxxxxxxxx>
Date: Wed, 16 Mar 2016 10:55:10 -0000
Reply-to: Bug 1558017 <1558017@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

When trying to integrate OVS with Openstack Liberty , the following
error is occuring in nova and neutron log

When creating instance getting error like this in nova compute log

    2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager [-] Instance failed network setup after 1 attempt(s)
    2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager Traceback (most recent call last):
    2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 1564, in _allocate_network_async
    2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager     dhcp_options=dhcp_options)
    2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager   File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 727, in allocate_for_instance
    2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager     self._delete_ports(neutron, instance, created_port_ids)
    2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager   File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 204, in __exit__
    2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager     six.reraise(self.type_, self.value, self.tb)
    2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager   File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 719, in allocate_for_instance
    2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager     security_group_ids, available_macs, dhcp_opts)
    2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager   File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 342, in _create_port
    2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager     raise exception.PortBindingFailed(port_id=port_id)
    2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager PortBindingFailed: Binding failed for port 1b642668-8de7-4ced-90a8-09c365166713, please check neutron logs for more information.
    2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [req-24302107-d1c4-4fb2-bb16-9e953915e1a3 e3048e3f75c54cf18b417697e38cd855 913c34a55d7a49abb3cdb8bb7e99939b - - -] [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8] Instance failed to spawn
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8] Traceback (most recent call last):
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2155, in _build_resources
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     yield resources
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2009, in _build_and_run_instance
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     block_device_info=block_device_info)
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 2512, in spawn
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     write_to_disk=True)
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 4383, in _get_guest_xml
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     network_info_str = str(network_info)
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/network/model.py", line 515, in __str__
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     return self._sync_wrapper(fn, *args, **kwargs)
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/network/model.py", line 498, in _sync_wrapper
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     self.wait()
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/network/model.py", line 530, in wait
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     self[:] = self._gt.wait()
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line 175, in wait
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     return self._exit_event.wait()
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/eventlet/event.py", line 125, in wait
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     current.throw(*self._exc)
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line 214, in main
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     result = function(*args, **kwargs)
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 1581, in _allocate_network_async
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     six.reraise(*exc_info)
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 1564, in _allocate_network_async
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     dhcp_options=dhcp_options)
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 727, in allocate_for_instance
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     self._delete_ports(neutron, instance, created_port_ids)
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 204, in __exit__
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     six.reraise(self.type_, self.value, self.tb)
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 719, in allocate_for_instance
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     security_group_ids, available_macs, dhcp_opts)
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 342, in _create_port
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     raise exception.PortBindingFailed(port_id=port_id)
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8] PortBindingFailed: Binding failed for port 1b642668-8de7-4ced-90a8-09c365166713, please check neutron logs for more information.
    2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]
    2016-03-16 06:23:05.931 23865 INFO nova.compute.manager [req-24302107-d1c4-4fb2-bb16-9e953915e1a3 e3048e3f75c54cf18b417697e38cd855 913c34a55d7a49abb3cdb8bb7e99939b - - -] [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8] Terminating instance


and in neutron-server.log we are getting this error

    [16/Mar/2016 06:23:06] "GET /v2.0/ports.json?device_id=7add5d16-5456-4c28-90b0-3dead149e4d8 HTTP/1.1" 200 221 0.049012
    2016-03-16 06:23:06.443 8639 ERROR neutron.plugins.ml2.managers [req-5943ed11-d239-406c-bea8-611e4c97218a - - - - -] Failed to bind port 9929027a-18fd-449e-ba38-e45c6088faf2 on host ubuntu
    2016-03-16 06:23:06.444 8639 ERROR neutron.plugins.ml2.managers [req-5943ed11-d239-406c-bea8-611e4c97218a - - - - -] Failed to bind port 9929027a-18fd-449e-ba38-e45c6088faf2 on host ubuntu
    2016-03-16 06:23:06.486 8639 INFO neutron.plugins.ml2.plugin [req-5943ed11-d239-406c-bea8-611e4c97218a - - - - -] Attempt 2 to bind port 9929027a-18fd-449e-ba38-e45c6088faf2
    
    Getting this warning also
    WARNING neutron.plugins.ml2.rpc [req-6a987d83-ed84-4170-8412-e37585098c46 - - - - -] Device 789fc742-09b3-4452-b556-50d8a4c0e9a2 requested by agent ovs-agent-oscomp-as-b175_neutron_agents_container-29f545b7 on network 22363bce-1d9e-4cfb-8440-37a8f516e73b not bound, vif_type: binding_failed
     

Went through couple of sites and tried recreating ovs bridge. Still no
luck . Can someone help on this ?

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1558017

Title:
  Error while creating instance after implementing OVS in Liberty

Status in neutron:
  New

Bug description:
  When trying to integrate OVS with Openstack Liberty , the following
  error is occuring in nova and neutron log

  When creating instance getting error like this in nova compute log

      2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager [-] Instance failed network setup after 1 attempt(s)
      2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager Traceback (most recent call last):
      2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 1564, in _allocate_network_async
      2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager     dhcp_options=dhcp_options)
      2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager   File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 727, in allocate_for_instance
      2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager     self._delete_ports(neutron, instance, created_port_ids)
      2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager   File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 204, in __exit__
      2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager     six.reraise(self.type_, self.value, self.tb)
      2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager   File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 719, in allocate_for_instance
      2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager     security_group_ids, available_macs, dhcp_opts)
      2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager   File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 342, in _create_port
      2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager     raise exception.PortBindingFailed(port_id=port_id)
      2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager PortBindingFailed: Binding failed for port 1b642668-8de7-4ced-90a8-09c365166713, please check neutron logs for more information.
      2016-03-16 06:23:05.724 23865 ERROR nova.compute.manager
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [req-24302107-d1c4-4fb2-bb16-9e953915e1a3 e3048e3f75c54cf18b417697e38cd855 913c34a55d7a49abb3cdb8bb7e99939b - - -] [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8] Instance failed to spawn
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8] Traceback (most recent call last):
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2155, in _build_resources
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     yield resources
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2009, in _build_and_run_instance
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     block_device_info=block_device_info)
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 2512, in spawn
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     write_to_disk=True)
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 4383, in _get_guest_xml
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     network_info_str = str(network_info)
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/network/model.py", line 515, in __str__
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     return self._sync_wrapper(fn, *args, **kwargs)
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/network/model.py", line 498, in _sync_wrapper
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     self.wait()
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/network/model.py", line 530, in wait
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     self[:] = self._gt.wait()
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line 175, in wait
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     return self._exit_event.wait()
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/eventlet/event.py", line 125, in wait
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     current.throw(*self._exc)
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line 214, in main
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     result = function(*args, **kwargs)
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 1581, in _allocate_network_async
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     six.reraise(*exc_info)
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 1564, in _allocate_network_async
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     dhcp_options=dhcp_options)
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 727, in allocate_for_instance
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     self._delete_ports(neutron, instance, created_port_ids)
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 204, in __exit__
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     six.reraise(self.type_, self.value, self.tb)
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 719, in allocate_for_instance
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     security_group_ids, available_macs, dhcp_opts)
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]   File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 342, in _create_port
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]     raise exception.PortBindingFailed(port_id=port_id)
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8] PortBindingFailed: Binding failed for port 1b642668-8de7-4ced-90a8-09c365166713, please check neutron logs for more information.
      2016-03-16 06:23:05.926 23865 ERROR nova.compute.manager [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8]
      2016-03-16 06:23:05.931 23865 INFO nova.compute.manager [req-24302107-d1c4-4fb2-bb16-9e953915e1a3 e3048e3f75c54cf18b417697e38cd855 913c34a55d7a49abb3cdb8bb7e99939b - - -] [instance: 7add5d16-5456-4c28-90b0-3dead149e4d8] Terminating instance

  
  and in neutron-server.log we are getting this error

      [16/Mar/2016 06:23:06] "GET /v2.0/ports.json?device_id=7add5d16-5456-4c28-90b0-3dead149e4d8 HTTP/1.1" 200 221 0.049012
      2016-03-16 06:23:06.443 8639 ERROR neutron.plugins.ml2.managers [req-5943ed11-d239-406c-bea8-611e4c97218a - - - - -] Failed to bind port 9929027a-18fd-449e-ba38-e45c6088faf2 on host ubuntu
      2016-03-16 06:23:06.444 8639 ERROR neutron.plugins.ml2.managers [req-5943ed11-d239-406c-bea8-611e4c97218a - - - - -] Failed to bind port 9929027a-18fd-449e-ba38-e45c6088faf2 on host ubuntu
      2016-03-16 06:23:06.486 8639 INFO neutron.plugins.ml2.plugin [req-5943ed11-d239-406c-bea8-611e4c97218a - - - - -] Attempt 2 to bind port 9929027a-18fd-449e-ba38-e45c6088faf2
      
      Getting this warning also
      WARNING neutron.plugins.ml2.rpc [req-6a987d83-ed84-4170-8412-e37585098c46 - - - - -] Device 789fc742-09b3-4452-b556-50d8a4c0e9a2 requested by agent ovs-agent-oscomp-as-b175_neutron_agents_container-29f545b7 on network 22363bce-1d9e-4cfb-8440-37a8f516e73b not bound, vif_type: binding_failed
       

  Went through couple of sites and tried recreating ovs bridge. Still no
  luck . Can someone help on this ?

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Follow ups

[Bug 1558017] Re: Error while creating instance after implementing OVS in Liberty
From: Launchpad Bug Tracker, 2016-05-17