--- upgrade: - | In the victoria release, the instance_numa_topology object was extended to enabled mix cpus (pinned and unpinned cpus) in the same instance. This change added a new field pcpuset to the instance_numa_topology object. While the change included object conversion code to handle the upgrade, it did not account for instances that have a numa_topology but were not pinned. i.e. a flavor with hw:mem_page_size or hw:numa_nodes set but without hw:cpu_policy set to dedicated. As a result, instances created between liberty and victoria releases with such a flavor cannot be started after upgrade to victoria. This has now been fixed. instances created post victoria are not affected by this issue. see: https://bugs.launchpad.net/nova/+bug/2080556 for more details.