"result": [
            {
                "atomic_actions": {
                    "cinder_v2.create_volume": 9.111752033233643,
                    "nova.boot_server": 8.806708812713623,
                    "nova.delete_server": 4.547015905380249,
                    "nova.resize": 21.692514181137085,
                    "nova.resize_confirm": 2.484968423843384
                },
                "duration": 45.64331245422363,
                "error": [],
                "idle_duration": 1.0,
                "output": {
                    "additive": [],
                    "complete": []
                },
                "timestamp": 1501785503.6735423
            },
            {
                "atomic_actions": {
                    "cinder_v2.create_volume": 15.287200212478638,
                    "nova.boot_server": 6.4364166259765625,
                    "nova.resize": 0.47534751892089844
                },
                "duration": 21.199254751205444,
                "error": [
                    "BadRequest",
                    "No valid host was found. No valid host found for resize (HTTP 400) (Request-ID: req-12e6d27f-447b-4cd1-b95d-1d13a76efd22)",
                    "Traceback (most recent call last):\n  File \"/opt/stack/new/rally/rally/task/runner.py\", line 72, in _run_scenario_once\n    getattr(scenario_inst, method_name)(**scenario_kwargs)\n  File \"/opt/stack/new/rally/rally/plugins/openstack/scenarios/nova/servers.py\", line 599, in run\n    self._resize(server, to_flavor)\n  File \"/opt/stack/new/rally/rally/task/atomic.py\", line 86, in func_atomic_actions\n    f = func(self, *args, **kwargs)\n  File \"/opt/stack/new/rally/rally/plugins/openstack/scenarios/nova/utils.py\", line 641, in _resize\n    server.resize(flavor)\n  File \"/usr/local/lib/python3.5/dist-packages/novaclient/v2/servers.py\", line 393, in resize\n    return self.manager.resize(self, flavor, **kwargs)\n  File \"/usr/local/lib/python3.5/dist-packages/novaclient/v2/servers.py\", line 1566, in resize\n    return self._action('resize', server, info=info, **kwargs)\n  File \"/usr/local/lib/python3.5/dist-packages/novaclient/v2/servers.py\", line 1931, in _action\n    info=info, **kwargs)\n  File \"/usr/local/lib/python3.5/dist-packages/novaclient/v2/servers.py\", line 1942, in _action_return_resp_and_body\n    return self.api.client.post(url, body=body)\n  File \"/usr/local/lib/python3.5/dist-packages/keystoneauth1/adapter.py\", line 294, in post\n    return self.request(url, 'POST', **kwargs)\n  File \"/usr/local/lib/python3.5/dist-packages/novaclient/client.py\", line 83, in request\n    raise exceptions.from_response(resp, body, url, method)\nnovaclient.exceptions.BadRequest: No valid host was found. No valid host found for resize (HTTP 400) (Request-ID: req-12e6d27f-447b-4cd1-b95d-1d13a76efd22)\n"
                ],
                "idle_duration": 1.0,
                "output": {
                    "additive": [],
                    "complete": []
                },
                "timestamp": 1501785503.676531
            }
        ],