108 lines
4.7 KiB
Python
108 lines
4.7 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 _assert_cpus_initial_state(self, host, shared_cpus, dedicated_cpus,
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sysfsclient):
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"""Assert that nova-compute disabled dedicated CPUs on startup"""
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# In case we didn't have a full set specified, at least make sure that
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# our shared CPUs are in the subset of online CPUs (i.e. we didn't
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# offline 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 at service startup.
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offline = sysfsclient.get_sysfs_value('devices/system/cpu/offline')
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self.assertEqual(dedicated_cpus, hardware.parse_cpu_spec(offline))
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def _assert_cpu_onlined_guest(self, host, dedicated_cpus, sysfsclient):
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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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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 = 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)
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def online_test_cpu(self, cpus, sysfsclient):
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"""Put our test CPUs back to online status"""
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for cpu in cpus:
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sysfsclient.set_sysfs_value(
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'devices/system/cpu/cpu%i/online' % cpu, '1')
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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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# Check that we don't have any offline CPUs to start with
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offline = sysfsclient.get_sysfs_value('devices/system/cpu/offline')
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self.assertEqual("", offline,
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'System has offlined CPUs unexpectedly!')
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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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opts = [('libvirt', 'cpu_power_management', 'True'),
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('libvirt', 'cpu_power_management_strategy', 'cpu_state')]
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if len(dedicated_cpus) < 2:
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raise self.skipException('Multiple dedicated CPUs required')
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# Nova will not online the CPUs it manages on shutdown, so we need
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# to re-online it before we finish here to leave the system as we
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# found it
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self.addCleanup(self.online_test_cpu, dedicated_cpus, sysfsclient)
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with sm.config_options(*tuple(opts)):
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self._assert_cpus_initial_state(host, shared_cpus, dedicated_cpus,
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sysfsclient)
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self._assert_cpu_onlined_guest(host, dedicated_cpus, sysfsclient)
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