Masakari fails to evacuate instance when nova-compute is not down already

[suzhengwei]

2020-06-13 23:25:29.873 7 DEBUG novaclient.v2.client [req-68f856fe-ede6-4823-b9fd-72675827ac3b nova - - - -] REQ: curl -g -i -X POST http://192.32.9.100:8774/v2.1/f1074a8b69d6427292b751648be45db5/servers/68452838-d850-4c6f-b431-b8ddf7819a9a/action -H "Accept: application/json" -H "Content-Type: application/json" -H "User-Agent: python-novaclient" -H "X-Auth-Token: {SHA1}d0ef8321fd907ee5fe9bdc6262dfff3fe6115d5c" -H "X-OpenStack-Nova-API-Version: 2.14" -H "X-OpenStack-Request-ID: req-3734ec04-4ff4-483b-bb2e-a06377a7623e" -d '{"evacuate": {}}' _http_log_request /var/lib/kolla/venv/lib/python2.7/site-packages/keystoneauth1/session.py:448

2020-06-13 23:25:30.097 7 DEBUG novaclient.v2.client [req-68f856fe-ede6-4823-b9fd-72675827ac3b nova - - - -] RESP BODY: {"badRequest": {"message": "Compute service of node105 is still in use.", "code": 400}} _http_log_response /var/lib/kolla/venv/lib/python2.7/site-packages/keystoneauth1/session.py:511
......

4 predecessors (most recent first):
  Flow 'post_tasks'
  |__Flow 'main_tasks'
     |__Flow 'pre_tasks'
        |__Flow 'instance_evacuate_engine': HostRecoveryFailureException: Failed to evacuate instances [u'68452838-d850-4c6f-b431-b8ddf7819a9a'] from host node105.
2020-06-13 23:25:30.618 7 ERROR masakari.engine.drivers.taskflow.driver Traceback (most recent call last):
2020-06-13 23:25:30.618 7 ERROR masakari.engine.drivers.taskflow.driver File "/var/lib/kolla/venv/lib/python2.7/site-packages/taskflow/engines/action_engine/executor.py", line 53, in _execute_task
2020-06-13 23:25:30.618 7 ERROR masakari.engine.drivers.taskflow.driver result = task.execute(**arguments)
2020-06-13 23:25:30.618 7 ERROR masakari.engine.drivers.taskflow.driver File "/var/lib/kolla/venv/lib/python2.7/site-packages/masakari/engine/drivers/taskflow/host_failure.py", line 331, in execute
2020-06-13 23:25:30.618 7 ERROR masakari.engine.drivers.taskflow.driver _do_evacuate(context, host_name, instance_list)
2020-06-13 23:25:30.618 7 ERROR masakari.engine.drivers.taskflow.driver File "/var/lib/kolla/venv/lib/python2.7/site-packages/masakari/engine/drivers/taskflow/host_failure.py", line 315, in _do_evacuate
2020-06-13 23:25:30.618 7 ERROR masakari.engine.drivers.taskflow.driver raise exception.HostRecoveryFailureException(message=msg)
2020-06-13 23:25:30.618 7 ERROR masakari.engine.drivers.taskflow.driver HostRecoveryFailureException: Failed to evacuate instances [u'68452838-d850-4c6f-b431-b8ddf7819a9a'] from host node105.
2020-06-13 23:25:30.618 7 ERROR masakari.engine.drivers.taskflow.driver

[Radosław Piliszek (yoctozepto)]

Nova throws ComputeServiceInUse ("Compute service of %(host)s is still in use.") when the host's nova-compute service is not DOWN when trying to evacuate an instance on that host.