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[Bug 1809136] Re: Unsupported VIF type unbound convert '_nova_to_osvif_vif_unbound' on compute restart

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** Also affects: nova/ocata
   Importance: Undecided
       Status: New

** Also affects: nova/rocky
   Importance: Undecided
       Status: New

** Also affects: nova/pike
   Importance: Undecided
       Status: New

** Also affects: nova/queens
   Importance: Undecided
       Status: New

** Changed in: nova
   Importance: Undecided => Medium

** Changed in: nova/rocky
       Status: New => In Progress

** Changed in: nova/rocky
   Importance: Undecided => Medium

** Changed in: nova/queens
   Importance: Undecided => Medium

** Changed in: nova/pike
   Importance: Undecided => Medium

** Changed in: nova/ocata
   Importance: Undecided => Medium

** Changed in: nova/rocky
     Assignee: (unassigned) => melanie witt (melwitt)

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https://bugs.launchpad.net/bugs/1809136

Title:
  Unsupported VIF type unbound convert '_nova_to_osvif_vif_unbound' on
  compute restart

Status in OpenStack Compute (nova):
  Fix Released
Status in OpenStack Compute (nova) ocata series:
  New
Status in OpenStack Compute (nova) pike series:
  New
Status in OpenStack Compute (nova) queens series:
  New
Status in OpenStack Compute (nova) rocky series:
  In Progress

Bug description:
  This is a variant of an existing bug:

  - https://bugs.launchpad.net/nova/+bug/1738373 tracks a similar
  exception ('_nova_to_osvif_vif_binding_failed') on compute startup.

  There are also two other closely related bugs:

  - https://bugs.launchpad.net/nova/+bug/1783917 tracks this same exception ('_nova_to_osvif_vif_unbound') but for live migrations
  - https://bugs.launchpad.net/nova/+bug/1784579 tracks a similar exception ('_nova_to_osvif_vif_binding_failed') but for live migration

  In addition, there are a few bugs which are likely the root cause of
  all of the above issues (and this one) in the first place:

  - https://bugs.launchpad.net/nova/+bug/1751923

  In this instance, as with bug 1738373, we are unable to start nova-
  compute service on compute node due to an os-vif invoked error.

  nova-compute.log on compute shows:

  2018-05-12 16:42:47.323 305978 INFO os_vif [req-0a72cdea-843a-4932-b8a0-bc24c2f21d9f - - - - -] Successfully plugged vif VIFBridge(active=True,address=fa:16:3e:41:a9:2c,bridge_name='qbr8d027ff4-23',has_traffic_filtering=True,id=8d027ff4-2328-47df-9f9a-2c1a9914a83b,network=Network(9a98b244-b1d2-46b3-ab0e-be8456e3a984),plugin='ovs',port_profile=VIFPortProfileBase,preserve_on_delete=False,vif_name='tap8d027ff4-23')
  2018-05-12 16:42:47.369 305978 ERROR oslo_service.service [req-0a72cdea-843a-4932-b8a0-bc24c2f21d9f - - - - -] Error starting thread.
  2018-05-12 16:42:47.369 305978 ERROR oslo_service.service Traceback (most recent call last):
  2018-05-12 16:42:47.369 305978 ERROR oslo_service.service   File "/usr/lib/python2.7/site-packages/oslo_service/service.py", line 708, in run_service
  2018-05-12 16:42:47.369 305978 ERROR oslo_service.service     service.start()
  2018-05-12 16:42:47.369 305978 ERROR oslo_service.service   File "/usr/lib/python2.7/site-packages/nova/service.py", line 117, in start
  2018-05-12 16:42:47.369 305978 ERROR oslo_service.service     self.manager.init_host()
  2018-05-12 16:42:47.369 305978 ERROR oslo_service.service   File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 1154, in init_host
  2018-05-12 16:42:47.369 305978 ERROR oslo_service.service     self._init_instance(context, instance)
  2018-05-12 16:42:47.369 305978 ERROR oslo_service.service   File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 957, in _init_instance
  2018-05-12 16:42:47.369 305978 ERROR oslo_service.service     self.driver.plug_vifs(instance, net_info)
  2018-05-12 16:42:47.369 305978 ERROR oslo_service.service   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 703, in plug_vifs
  2018-05-12 16:42:47.369 305978 ERROR oslo_service.service     self.vif_driver.plug(instance, vif)
  2018-05-12 16:42:47.369 305978 ERROR oslo_service.service   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/vif.py", line 771, in plug
  2018-05-12 16:42:47.369 305978 ERROR oslo_service.service     vif_obj = os_vif_util.nova_to_osvif_vif(vif)
  2018-05-12 16:42:47.369 305978 ERROR oslo_service.service   File "/usr/lib/python2.7/site-packages/nova/network/os_vif_util.py", line 408, in nova_to_osvif_vif
  2018-05-12 16:42:47.369 305978 ERROR oslo_service.service     {'type': vif['type'], 'func': funcname})
  2018-05-12 16:42:47.369 305978 ERROR oslo_service.service NovaException: Unsupported VIF type unbound convert '_nova_to_osvif_vif_unbound'
  2018-05-12 16:42:47.369 305978 ERROR oslo_service.service

  Inspecting the available ports shows the port does exist, so this
  looks like a caching issue.

  [stack@director:~]$ neutron port-list | grep fa:16:3e:41:a9:2c
  | 8d027ff4-2328-47df-9f9a-2c1a9914a83b |                                                                                                        | fa:16:3e:41:a9:2c | {"subnet_id": "1f5ed9bc-aa7d-49bd-ac48-23b430fc0eb4", "ip_address": "172.19.9.17"}     |
  [stack@director:~]$ neutron port-show 8d027ff4-2328-47df-9f9a-2c1a9914a83b
  +-----------------------+------------------------------------------------------------------------------------+
  | Field                 | Value                                                                              |
  +-----------------------+------------------------------------------------------------------------------------+
  | admin_state_up        | True                                                                               |
  | allowed_address_pairs |                                                                                    |
  | binding:host_id       | overcloud-compute-7.localdomain                                                    |
  | binding:profile       | {}                                                                                 |
  | binding:vif_details   | {"port_filter": true, "ovs_hybrid_plug": true}                                     |
  | binding:vif_type      | ovs                                                                                |
  | binding:vnic_type     | normal                                                                             |
  | created_at            | 2017-10-31T12:31:45Z                                                               |
  | description           |                                                                                    |
  | device_id             | b4ef4d0b-9e39-4741-a2dd-7fd7c066d13b                                               |
  | device_owner          | compute:nova                                                                       |
  | extra_dhcp_opts       |                                                                                    |
  | fixed_ips             | {"subnet_id": "1f5ed9bc-aa7d-49bd-ac48-23b430fc0eb4", "ip_address": "172.19.9.17"} |
  | id                    | 8d027ff4-2328-47df-9f9a-2c1a9914a83b                                               |
  | mac_address           | fa:16:3e:41:a9:2c                                                                  |
  | name                  |                                                                                    |
  | network_id            | 9a98b244-b1d2-46b3-ab0e-be8456e3a984                                               |
  | port_security_enabled | True                                                                               |
  | project_id            | 3b2049626c954cdc9147beee2d34b441                                                   |
  | qos_policy_id         |                                                                                    |
  | revision_number       | 184                                                                                |
  | security_groups       | 97aa0764-c0b5-47d1-88b2-285673d46a31                                               |
  |                       | c7addc13-5a77-4322-953a-9d89d42468e6                                               |
  |                       | cecdad42-7c78-45e7-9ec2-fef1086dbb7e                                               |
  |                       | de0a6da8-c44e-475f-90fd-1fb625840c52                                               |
  | status                | ACTIVE                                                                             |
  | tenant_id             | 3b2049626c954cdc9147beee2d34b441                                                   |
  | updated_at            | 2018-05-12T15:37:46Z                                                               |
  +-----------------------+------------------------------------------------------------------------------------+

  We should figure out why the invalid cache is getting saved, but we're
  going to track that effort separately. For now, we should just focus
  on letting the service start, putting instances with errors like this
  into error state.

  This was originally reported here
  https://bugzilla.redhat.com/show_bug.cgi?id=1578028

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References

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