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[Erik Olof Gunnar Andersson <eandersson@xxxxxxxxxxxx>]

Public bug reported:

This is related to this bug https://bugs.launchpad.net/nova/+bug/1596119

After upgrading to Mitaka with the above patch, a new bug surfaced. The bug is related to InstanceNUMACell having cpu_policy set to None. This causes cpu_pinning_requested to always return False.
https://github.com/openstack/nova/blob/master/nova/objects/instance_numa_topology.py#L112

This will then trick computes with old NUMA instances into thinking that
nothing is pinned, causing new instances with cpu_policy set to
CPUAllocationPolicy.DEDICATED to potentially get scheduled on the same
NUMA zone.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1636338

Title:
  Numa topology not calculated for instance with numa_topology after
  upgrading to Mitaka

Status in OpenStack Compute (nova):
  New

Bug description:
  This is related to this bug
  https://bugs.launchpad.net/nova/+bug/1596119

  After upgrading to Mitaka with the above patch, a new bug surfaced. The bug is related to InstanceNUMACell having cpu_policy set to None. This causes cpu_pinning_requested to always return False.
  https://github.com/openstack/nova/blob/master/nova/objects/instance_numa_topology.py#L112

  This will then trick computes with old NUMA instances into thinking
  that nothing is pinned, causing new instances with cpu_policy set to
  CPUAllocationPolicy.DEDICATED to potentially get scheduled on the same
  NUMA zone.

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