# Copyright (c) 2019 Ericsson # # Licensed under the Apache License, Version 2.0 (the "License"); you may # not use this file except in compliance with the License. You may obtain # a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the # License for the specific language governing permissions and limitations # under the License. import testtools from tempest.common import utils from tempest.common import waiters from tempest import config from tempest.lib.common.utils import data_utils from tempest.lib.common.utils import test_utils from tempest.lib import decorators from tempest.scenario import manager CONF = config.CONF class MinBwAllocationPlacementTest(manager.NetworkScenarioTest): credentials = ['primary', 'admin'] required_extensions = ['port-resource-request', 'qos', 'qos-bw-minimum-ingress'] # The feature QoS minimum bandwidth allocation in Placement API depends on # Granular resource requests to GET /allocation_candidates and Support # allocation candidates with nested resource providers features in # Placement (see: https://specs.openstack.org/openstack/nova-specs/specs/ # stein/approved/bandwidth-resource-provider.html#rest-api-impact) and this # means that the minimum placement microversion is 1.29 placement_min_microversion = '1.29' placement_max_microversion = 'latest' # Nova rejects to boot VM with port which has resource_request field, below # microversion 2.72 compute_min_microversion = '2.72' compute_max_microversion = 'latest' INGRESS_RESOURCE_CLASS = "NET_BW_IGR_KILOBIT_PER_SEC" INGRESS_DIRECTION = 'ingress' SMALLEST_POSSIBLE_BW = 1 # For any realistic inventory value (that is inventory != MAX_INT) an # allocation candidate request of MAX_INT is expected to be rejected, see: # https://github.com/openstack/placement/blob/master/placement/ # db/constants.py#L16 PLACEMENT_MAX_INT = 0x7FFFFFFF @classmethod def setup_clients(cls): super(MinBwAllocationPlacementTest, cls).setup_clients() cls.placement_client = cls.os_admin.placement_client cls.networks_client = cls.os_admin.networks_client cls.subnets_client = cls.os_admin.subnets_client cls.routers_client = cls.os_adm.routers_client cls.qos_client = cls.os_admin.qos_client cls.qos_min_bw_client = cls.os_admin.qos_min_bw_client cls.flavors_client = cls.os_adm.flavors_client cls.servers_client = cls.os_adm.servers_client @classmethod def skip_checks(cls): super(MinBwAllocationPlacementTest, cls).skip_checks() if not CONF.network_feature_enabled.qos_placement_physnet: msg = "Skipped as no physnet is available in config for " \ "placement based QoS allocation." raise cls.skipException(msg) def setUp(self): super(MinBwAllocationPlacementTest, self).setUp() self._check_if_allocation_is_possible() self._create_network_and_qos_policies() def _create_policy_and_min_bw_rule(self, name_prefix, min_kbps): policy = self.qos_client.create_qos_policy( name=data_utils.rand_name(name_prefix), shared=True)['policy'] self.addCleanup(test_utils.call_and_ignore_notfound_exc, self.qos_client.delete_qos_policy, policy['id']) rule = self.qos_min_bw_client.create_minimum_bandwidth_rule( policy['id'], **{ 'min_kbps': min_kbps, 'direction': self.INGRESS_DIRECTION })['minimum_bandwidth_rule'] self.addCleanup( test_utils.call_and_ignore_notfound_exc, self.qos_min_bw_client.delete_minimum_bandwidth_rule, policy['id'], rule['id']) return policy def _create_qos_policies(self): self.qos_policy_valid = self._create_policy_and_min_bw_rule( name_prefix='test_policy_valid', min_kbps=self.SMALLEST_POSSIBLE_BW) self.qos_policy_not_valid = self._create_policy_and_min_bw_rule( name_prefix='test_policy_not_valid', min_kbps=self.PLACEMENT_MAX_INT) def _create_network_and_qos_policies(self): physnet_name = CONF.network_feature_enabled.qos_placement_physnet base_segm = \ CONF.network_feature_enabled.provider_net_base_segmentation_id self.prov_network, _, _ = self.create_networks( networks_client=self.networks_client, routers_client=self.routers_client, subnets_client=self.subnets_client, **{ 'shared': True, 'provider:network_type': 'vlan', 'provider:physical_network': physnet_name, 'provider:segmentation_id': base_segm }) self._create_qos_policies() def _check_if_allocation_is_possible(self): alloc_candidates = self.placement_client.list_allocation_candidates( resources1='%s:%s' % (self.INGRESS_RESOURCE_CLASS, self.SMALLEST_POSSIBLE_BW)) if len(alloc_candidates['provider_summaries']) == 0: # Skip if the backend does not support QoS minimum bandwidth # allocation in Placement API raise self.skipException( 'No allocation candidates are available for %s:%s' % (self.INGRESS_RESOURCE_CLASS, self.SMALLEST_POSSIBLE_BW)) # Just to be sure check with impossible high (placement max_int), # allocation alloc_candidates = self.placement_client.list_allocation_candidates( resources1='%s:%s' % (self.INGRESS_RESOURCE_CLASS, self.PLACEMENT_MAX_INT)) if len(alloc_candidates['provider_summaries']) != 0: self.fail('For %s:%s there should be no available candidate!' % (self.INGRESS_RESOURCE_CLASS, self.PLACEMENT_MAX_INT)) def _boot_vm_with_min_bw(self, qos_policy_id, status='ACTIVE'): wait_until = (None if status == 'ERROR' else status) port = self.create_port( self.prov_network['id'], qos_policy_id=qos_policy_id) server = self.create_server(networks=[{'port': port['id']}], wait_until=wait_until) waiters.wait_for_server_status( client=self.os_primary.servers_client, server_id=server['id'], status=status, ready_wait=False, raise_on_error=False) return server, port def _assert_allocation_is_as_expected(self, allocations, port_id): self.assertGreater(len(allocations['allocations']), 0) bw_resource_in_alloc = False for rp, resources in allocations['allocations'].items(): if self.INGRESS_RESOURCE_CLASS in resources['resources']: bw_resource_in_alloc = True allocation_rp = rp self.assertTrue(bw_resource_in_alloc) # Check binding_profile of the port is not empty and equals with the # rp uuid port = self.os_admin.ports_client.show_port(port_id) self.assertEqual(allocation_rp, port['port']['binding:profile']['allocation']) @decorators.idempotent_id('78625d92-212c-400e-8695-dd51706858b8') @utils.services('compute', 'network') def test_qos_min_bw_allocation_basic(self): """"Basic scenario with QoS min bw allocation in placement. Steps: * Create prerequisites: ** VLAN type provider network with subnet. ** valid QoS policy with minimum bandwidth rule with min_kbps=1 (This is a simplification to skip the checks in placement for detecting the resource provider tree and inventories, as if bandwidth resource is available 1 kbs will be available). ** invalid QoS policy with minimum bandwidth rule with min_kbs=max integer from placement (this is a simplification again to avoid detection of RP tress and inventories, as placement will reject such big allocation). * Create port with valid QoS policy, and boot VM with that, it should pass. * Create port with invalid QoS policy, and try to boot VM with that, it should fail. """ server1, valid_port = self._boot_vm_with_min_bw( qos_policy_id=self.qos_policy_valid['id']) allocations = self.placement_client.list_allocations(server1['id']) self._assert_allocation_is_as_expected(allocations, valid_port['id']) server2, not_valid_port = self._boot_vm_with_min_bw( self.qos_policy_not_valid['id'], status='ERROR') allocations = self.placement_client.list_allocations(server2['id']) self.assertEqual(0, len(allocations['allocations'])) server2 = self.servers_client.show_server(server2['id']) self.assertIn('fault', server2['server']) self.assertIn('No valid host', server2['server']['fault']['message']) # Check that binding_profile of the port is empty port = self.os_admin.ports_client.show_port(not_valid_port['id']) self.assertEqual(0, len(port['port']['binding:profile'])) @decorators.idempotent_id('8a98150c-a506-49a5-96c6-73a5e7b04ada') @testtools.skipUnless(CONF.compute_feature_enabled.cold_migration, 'Cold migration is not available.') @testtools.skipUnless(CONF.compute.min_compute_nodes > 1, 'Less than 2 compute nodes, skipping multinode ' 'tests.') @utils.services('compute', 'network') def test_migrate_with_qos_min_bw_allocation(self): """Scenario to migrate VM with QoS min bw allocation in placement Boot a VM like in test_qos_min_bw_allocation_basic, do the same checks, and * migrate the server * confirm the resize, if the VM state is VERIFY_RESIZE * If the VM goes to ACTIVE state check that allocations are as expected. """ server, valid_port = self._boot_vm_with_min_bw( qos_policy_id=self.qos_policy_valid['id']) allocations = self.placement_client.list_allocations(server['id']) self._assert_allocation_is_as_expected(allocations, valid_port['id']) self.servers_client.migrate_server(server_id=server['id']) waiters.wait_for_server_status( client=self.os_primary.servers_client, server_id=server['id'], status='VERIFY_RESIZE', ready_wait=False, raise_on_error=False) allocations = self.placement_client.list_allocations(server['id']) # TODO(lajoskatona): Check that the allocations are ok for the # migration? self._assert_allocation_is_as_expected(allocations, valid_port['id']) self.servers_client.confirm_resize_server(server_id=server['id']) waiters.wait_for_server_status( client=self.os_primary.servers_client, server_id=server['id'], status='ACTIVE', ready_wait=False, raise_on_error=True) allocations = self.placement_client.list_allocations(server['id']) self._assert_allocation_is_as_expected(allocations, valid_port['id']) @decorators.idempotent_id('c29e7fd3-035d-4993-880f-70819847683f') @testtools.skipUnless(CONF.compute_feature_enabled.resize, 'Resize not available.') @utils.services('compute', 'network') def test_resize_with_qos_min_bw_allocation(self): """Scenario to resize VM with QoS min bw allocation in placement. Boot a VM like in test_qos_min_bw_allocation_basic, do the same checks, and * resize the server with new flavor * confirm the resize, if the VM state is VERIFY_RESIZE * If the VM goes to ACTIVE state check that allocations are as expected. """ server, valid_port = self._boot_vm_with_min_bw( qos_policy_id=self.qos_policy_valid['id']) allocations = self.placement_client.list_allocations(server['id']) self._assert_allocation_is_as_expected(allocations, valid_port['id']) old_flavor = self.flavors_client.show_flavor( CONF.compute.flavor_ref)['flavor'] new_flavor = self.flavors_client.create_flavor(**{ 'ram': old_flavor['ram'], 'vcpus': old_flavor['vcpus'], 'name': old_flavor['name'] + 'extra', 'disk': old_flavor['disk'] + 1 })['flavor'] self.addCleanup(test_utils.call_and_ignore_notfound_exc, self.flavors_client.delete_flavor, new_flavor['id']) self.servers_client.resize_server( server_id=server['id'], flavor_ref=new_flavor['id']) waiters.wait_for_server_status( client=self.os_primary.servers_client, server_id=server['id'], status='VERIFY_RESIZE', ready_wait=False, raise_on_error=False) allocations = self.placement_client.list_allocations(server['id']) # TODO(lajoskatona): Check that the allocations are ok for the # migration? self._assert_allocation_is_as_expected(allocations, valid_port['id']) self.servers_client.confirm_resize_server(server_id=server['id']) waiters.wait_for_server_status( client=self.os_primary.servers_client, server_id=server['id'], status='ACTIVE', ready_wait=False, raise_on_error=True) allocations = self.placement_client.list_allocations(server['id']) self._assert_allocation_is_as_expected(allocations, valid_port['id'])