76 lines
3.6 KiB
Python
76 lines
3.6 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from nova import context
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from nova import objects
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from nova.tests.functional import integrated_helpers
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class ResizeEvacuateTestCase(integrated_helpers._IntegratedTestBase,
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integrated_helpers.InstanceHelperMixin):
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"""Regression test for bug 1669054 introduced in Newton.
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When resizing a server, if CONF.allow_resize_to_same_host is False,
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the API will set RequestSpec.ignore_hosts = [instance.host] and then
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later in conductor the RequestSpec changes are saved to persist the new
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flavor. This inadvertently saves the ignore_hosts value. Later if you
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try to migrate, evacuate or unshelve the server, that original source
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host will be ignored. If the deployment has a small number of computes,
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like two in an edge node, then evacuate will fail because the only other
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available host is ignored. This test recreates the scenario.
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"""
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# Set variables used in the parent class.
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REQUIRES_LOCKING = False
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ADMIN_API = True
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_image_ref_parameter = 'imageRef'
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_flavor_ref_parameter = 'flavorRef'
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api_major_version = 'v2.1'
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microversion = '2.11' # Need at least 2.11 for the force-down API
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def test_resize_then_evacuate(self):
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# Create a server. At this point there is only one compute service.
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flavors = self.api.get_flavors()
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flavor1 = flavors[0]['id']
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server = self._build_server(flavor1)
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server = self.api.post_server({'server': server})
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self._wait_for_state_change(server, 'ACTIVE')
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# Start up another compute service so we can resize.
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host2 = self.start_service('compute', host='host2')
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# Now resize the server to move it to host2.
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flavor2 = flavors[1]['id']
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req = {'resize': {'flavorRef': flavor2}}
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self.api.post_server_action(server['id'], req)
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server = self._wait_for_state_change(server, 'VERIFY_RESIZE')
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self.assertEqual('host2', server['OS-EXT-SRV-ATTR:host'])
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self.api.post_server_action(server['id'], {'confirmResize': None})
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server = self._wait_for_state_change(server, 'ACTIVE')
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# Disable the host on which the server is now running (host2).
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host2.stop()
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self.api.force_down_service('host2', 'nova-compute', forced_down=True)
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# Now try to evacuate the server back to the original source compute.
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req = {'evacuate': {'onSharedStorage': False}}
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self.api.post_server_action(server['id'], req)
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server = self._wait_for_state_change(server, 'ACTIVE')
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# The evacuate flow in the compute manager is annoying in that it
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# sets the instance status to ACTIVE before updating the host, so we
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# have to wait for the migration record to be 'done' to avoid a race.
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self._wait_for_migration_status(server, ['done'])
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self.assertEqual(self.compute.host, server['OS-EXT-SRV-ATTR:host'])
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# Assert the RequestSpec.ignore_hosts field is not populated.
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reqspec = objects.RequestSpec.get_by_instance_uuid(
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context.get_admin_context(), server['id'])
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self.assertIsNone(reqspec.ignore_hosts)
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