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[sean mooney <1913016@xxxxxxxxxxxxxxxxxx>]

** Changed in: nova
       Status: In Progress => Opinion

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https://bugs.launchpad.net/bugs/1913016

Title:
  nova api os-resetState should not reset the state when VM is
  shelved_offloaded

Status in OpenStack Compute (nova):
  Opinion

Bug description:
  when the VM is in SHELVED_OFFLOADED state the VM doesn't exist
  physically on any compute node so resetting the state to active or
  error might cause the DB inconsistency and also make unshelving
  difficult.

  ~~~
  (overcloud) [stack@undercloud ~]$ nova list 
  +--------------------------------------+-------+-------------------+------------+-------------+------------------------------+
  | ID                                   | Name  | Status            | Task State | Power State | Networks                     |
  +--------------------------------------+-------+-------------------+------------+-------------+------------------------------+
  | f86f9503-02c3-4c11-bd61-bfd9b9b8ad21 | test2 | SHELVED_OFFLOADED | -          | Shutdown    | sriov-net1-197=10.74.167.185 |
  +--------------------------------------+-------+-------------------+------------+-------------+------------------------------+
  (overcloud) [stack@undercloud ~]$ openstack server set --state active test2
  (overcloud) [stack@undercloud ~]$ openstack server list 
  +--------------------------------------+-------+--------+------------------------------+---------+-----------+
  | ID                                   | Name  | Status | Networks                     | Image   | Flavor    |
  +--------------------------------------+-------+--------+------------------------------+---------+-----------+
  | f86f9503-02c3-4c11-bd61-bfd9b9b8ad21 | test2 | ACTIVE | sriov-net1-197=10.74.167.185 | rhel7.7 | m1-medium |
  +--------------------------------------+-------+--------+------------------------------+---------+-----------+
  (overcloud) [stack@undercloud ~]$ openstack server unshelve test2
  Cannot 'unshelve' instance f86f9503-02c3-4c11-bd61-bfd9b9b8ad21 while it is in vm_state active (HTTP 409) (Request-ID: req-c992c5f5-63c9-4472-be75-9594bc682b37)
  ~~~

  Not just unshelve, we cannot perform any VM operation as VM doesn't
  exist anywhere.

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