869fdccf31
Until we fixed https://bugs.launchpad.net/nova/+bug/2056613 and https://bugs.launchpad.net/nova/+bug/2056612, libvirt CPU power management was broken with the `isolate` thread emualtor thread policy, and with live migration. This was noticed more or less by accident when the patch above this one triggered the right conditions for our existing tests with incomplete coverage to break. To prevent his from happening again, this patch turns on CPU power management in our CI job, and modifies the test to assume that it's turned on. Change-Id: Ia48289ee4f909a33bfe6dac19eccff558b448da9
80 lines
3.4 KiB
Python
80 lines
3.4 KiB
Python
# Copyright 2023 Red Hat
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# All Rights Reserved.
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#
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# 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 tempest.common import waiters
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from whitebox_tempest_plugin.api.compute import base
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from whitebox_tempest_plugin import hardware
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from whitebox_tempest_plugin.services import clients
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class TestCPUStateMgmt(base.BaseWhiteboxComputeTest):
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"""Test Nova's CPU state management feature, ensuring that CPUs are
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onlined and offlined at the expected times.
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"""
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min_microversion = '2.95'
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@classmethod
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def skip_checks(cls):
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super(TestCPUStateMgmt, cls).skip_checks()
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def setUp(self):
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super(TestCPUStateMgmt, self).setUp()
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self.flavor = self.create_flavor(
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vcpus=1,
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extra_specs={'hw:cpu_policy': 'dedicated'})
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def test_cpu_state(self):
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host = self.list_compute_hosts()[0]
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sysfsclient = clients.SysFSClient(host)
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sm = clients.NovaServiceManager(host, 'nova-compute',
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self.os_admin.services_client)
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dedicated_cpus = sm.get_cpu_dedicated_set()
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shared_cpus = sm.get_cpu_shared_set()
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if len(dedicated_cpus) < 2:
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raise self.skipException('Multiple dedicated CPUs required')
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# Assert that nova-compute disabled dedicated CPUs on startup. In case
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# we didn't have a full set specified, at least make sure that our
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# shared CPUs are in the subset of online CPUs (i.e. we didn't offline
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# any of the shared ones).
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online = sysfsclient.get_sysfs_value('devices/system/cpu/online')
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self.assertTrue(shared_cpus.issubset(hardware.parse_cpu_spec(online)))
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# All our dedicated CPUs should be offlined (this assumes running
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# serially with no other guests using the dedicated CPUs).
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offline_before = hardware.parse_cpu_spec(
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sysfsclient.get_sysfs_value('devices/system/cpu/offline'))
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self.assertEqual(dedicated_cpus, offline_before)
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server = self.create_test_server(clients=self.os_admin,
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flavor=self.flavor['id'],
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host=host,
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wait_until='ACTIVE')
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# Our test server should have caused nova to online our dedicated CPU
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offline_after = hardware.parse_cpu_spec(
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sysfsclient.get_sysfs_value('devices/system/cpu/offline'))
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self.assertLess(offline_after, offline_before)
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self.os_admin.servers_client.delete_server(server['id'])
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waiters.wait_for_server_termination(self.os_admin.servers_client,
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server['id'])
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# Once it is gone, the dedicated CPU should be offline again
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offline_final = hardware.parse_cpu_spec(
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sysfsclient.get_sysfs_value('devices/system/cpu/offline'))
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self.assertEqual(offline_before, offline_final)
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