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[do3meli <1999582@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

having a vm with a provider network port that has it's status set to
"admin down" won't let this vm migrate successfully. the source compute
host will abort the migration with the following message:

Timed out waiting for events: [('network-vif-plugged',
'8066f303-a72c-4784-9fc0-de5f7d8a993f'), ('network-vif-plugged',
'6c167efe-3a55-46d1-baf1-4962b3bc387f')]. If these timeouts are a
persistent issue it could mean the networking backend on host computeXXX
does not support sending these events unless there are port binding host
changes which does not happen at this point in the live migration
process. You may need to disable the live_migration_wait_for_vif_plug
option on host computeXXX.: eventlet.timeout.Timeout: 300 seconds

setting the port admin status up and re-running the life migration let
the vm successfully complete. Therefore the logic for the
live_migration_wait_for_vif_plug settings should be adjusted to take
into consideration if a port should be up or not.

Environment:

- Ubuntu 20.04.5 with Cloud Archive Repositories in version 19.4.0-0ubuntu1~cloud0 on Xena branch
- Using ML2 with OVS on physical provider network

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1999582

Title:
  vm live migration not working when port is admin down

Status in neutron:
  New

Bug description:
  having a vm with a provider network port that has it's status set to
  "admin down" won't let this vm migrate successfully. the source
  compute host will abort the migration with the following message:

  Timed out waiting for events: [('network-vif-plugged',
  '8066f303-a72c-4784-9fc0-de5f7d8a993f'), ('network-vif-plugged',
  '6c167efe-3a55-46d1-baf1-4962b3bc387f')]. If these timeouts are a
  persistent issue it could mean the networking backend on host
  computeXXX does not support sending these events unless there are port
  binding host changes which does not happen at this point in the live
  migration process. You may need to disable the
  live_migration_wait_for_vif_plug option on host computeXXX.:
  eventlet.timeout.Timeout: 300 seconds

  setting the port admin status up and re-running the life migration let
  the vm successfully complete. Therefore the logic for the
  live_migration_wait_for_vif_plug settings should be adjusted to take
  into consideration if a port should be up or not.

  Environment:

  - Ubuntu 20.04.5 with Cloud Archive Repositories in version 19.4.0-0ubuntu1~cloud0 on Xena branch
  - Using ML2 with OVS on physical provider network

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