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[John Garbutt <john@xxxxxxxxxxxxxxx>]

Seems like a nasty regression, adding to mitaka rc2

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

** Changed in: nova/mitaka
    Milestone: None => mitaka-rc2

** Tags added: mitaka-rc-potential

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https://bugs.launchpad.net/bugs/1561022

Title:
  Server group policies are not honored during live migration

Status in OpenStack Compute (nova):
  Confirmed
Status in OpenStack Compute (nova) mitaka series:
  New

Bug description:
  Commit
  https://github.com/openstack/nova/commit/111a852e79f0d9e54228d8e2724dc4183f737397
  introduced regression that causes affinity/anti-affinity policies to
  be omitted while live migrating an instance.

  This is because we don't pass instance_group here:

  https://github.com/openstack/nova/blob/111a852e79f0d9e54228d8e2724dc4183f737397/nova/conductor/tasks/live_migrate.py#L183

  However, filters are expecting this information:

  https://github.com/openstack/nova/blob/111a852e79f0d9e54228d8e2724dc4183f737397/nova/scheduler/filters/affinity_filter.py#L86

  Basically we should pass instance group so that filters can read this
  information later.

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