289 lines
12 KiB
Python
289 lines
12 KiB
Python
# Copyright (C) 2016 Red Hat, Inc
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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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import mock
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from oslo_config import cfg
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from oslo_log import log as logging
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from nova.objects import fields
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from nova.tests.functional.libvirt import base
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from nova.tests.unit.virt.libvirt import fakelibvirt
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CONF = cfg.CONF
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LOG = logging.getLogger(__name__)
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class _PCIServersTestBase(base.ServersTestBase):
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vfs_alias_name = 'vfs'
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pfs_alias_name = 'pfs'
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pci_passthrough_whitelist = [
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'{"vendor_id":"8086", "product_id":"1528"}',
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'{"vendor_id":"8086", "product_id":"1515"}',
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]
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# PFs will be removed from pools unless they are specifically
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# requested, so we explicitly request them with the 'device_type'
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# attribute
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pci_alias = [
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'{"vendor_id":"8086", "product_id":"1528", "name":"%s", '
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'"device_type":"%s"}' % (
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pfs_alias_name, fields.PciDeviceType.SRIOV_PF),
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'{"vendor_id":"8086", "product_id":"1515", "name":"%s"}' % (
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vfs_alias_name),
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]
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def setUp(self):
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self.flags(passthrough_whitelist=self.pci_passthrough_whitelist,
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alias=self.pci_alias,
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group='pci')
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super(_PCIServersTestBase, self).setUp()
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self.compute_started = False
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# Mock the 'PciPassthroughFilter' filter, as most tests need to inspect
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# this
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host_manager = self.scheduler.manager.driver.host_manager
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pci_filter_class = host_manager.filter_cls_map['PciPassthroughFilter']
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host_pass_mock = mock.Mock(wraps=pci_filter_class().host_passes)
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_p = mock.patch('nova.scheduler.filters.pci_passthrough_filter'
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'.PciPassthroughFilter.host_passes',
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side_effect=host_pass_mock)
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self.mock_filter = _p.start()
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self.addCleanup(_p.stop)
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def _setup_scheduler_service(self):
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# Enable the 'NUMATopologyFilter', 'PciPassthroughFilter'
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enabled_filters = CONF.filter_scheduler.enabled_filters + [
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'NUMATopologyFilter', 'PciPassthroughFilter']
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self.flags(driver='filter_scheduler', group='scheduler')
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self.flags(enabled_filters=enabled_filters, group='filter_scheduler')
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return self.start_service('scheduler')
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def _run_build_test(self, flavor_id, end_status='ACTIVE'):
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if not self.compute_started:
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self.compute = self.start_service('compute', host='test_compute0')
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self.compute_started = True
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# Create server
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good_server = self._build_server(flavor_id)
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post = {'server': good_server}
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created_server = self.api.post_server(post)
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LOG.debug("created_server: %s", created_server)
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self.assertTrue(created_server['id'])
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created_server_id = created_server['id']
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# Validate that the server has been created
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found_server = self.api.get_server(created_server_id)
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self.assertEqual(created_server_id, found_server['id'])
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# It should also be in the all-servers list
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servers = self.api.get_servers()
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server_ids = [s['id'] for s in servers]
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self.assertIn(created_server_id, server_ids)
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# Validate that PciPassthroughFilter has been called
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self.assertTrue(self.mock_filter.called)
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found_server = self._wait_for_state_change(found_server, 'BUILD')
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self.assertEqual(end_status, found_server['status'])
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self.addCleanup(self._delete_server, created_server_id)
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return created_server
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class SRIOVServersTest(_PCIServersTestBase):
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@mock.patch('nova.virt.libvirt.LibvirtDriver._create_image')
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def test_create_server_with_VF(self, img_mock):
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host_info = fakelibvirt.NUMAHostInfo(cpu_nodes=2, cpu_sockets=1,
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cpu_cores=2, cpu_threads=2,
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kB_mem=15740000)
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pci_info = fakelibvirt.HostPciSRIOVDevicesInfo()
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fake_connection = self._get_connection(host_info, pci_info)
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self.mock_conn.return_value = fake_connection
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# Create a flavor
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extra_spec = {"pci_passthrough:alias": "%s:1" % self.vfs_alias_name}
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flavor_id = self._create_flavor(extra_spec=extra_spec)
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self._run_build_test(flavor_id)
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@mock.patch('nova.virt.libvirt.LibvirtDriver._create_image')
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def test_create_server_with_PF(self, img_mock):
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host_info = fakelibvirt.NUMAHostInfo(cpu_nodes=2, cpu_sockets=1,
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cpu_cores=2, cpu_threads=2,
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kB_mem=15740000)
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pci_info = fakelibvirt.HostPciSRIOVDevicesInfo()
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fake_connection = self._get_connection(host_info, pci_info)
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self.mock_conn.return_value = fake_connection
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# Create a flavor
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extra_spec = {"pci_passthrough:alias": "%s:1" % self.pfs_alias_name}
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flavor_id = self._create_flavor(extra_spec=extra_spec)
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self._run_build_test(flavor_id)
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@mock.patch('nova.virt.libvirt.LibvirtDriver._create_image')
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def test_create_server_with_PF_no_VF(self, img_mock):
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host_info = fakelibvirt.NUMAHostInfo(cpu_nodes=2, cpu_sockets=1,
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cpu_cores=2, cpu_threads=2,
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kB_mem=15740000)
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pci_info = fakelibvirt.HostPciSRIOVDevicesInfo(num_pfs=1, num_vfs=4)
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fake_connection = self._get_connection(host_info, pci_info)
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self.mock_conn.return_value = fake_connection
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# Create a flavor
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extra_spec_pfs = {"pci_passthrough:alias": "%s:1" %
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self.pfs_alias_name}
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extra_spec_vfs = {"pci_passthrough:alias": "%s:1" %
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self.vfs_alias_name}
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flavor_id_pfs = self._create_flavor(extra_spec=extra_spec_pfs)
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flavor_id_vfs = self._create_flavor(extra_spec=extra_spec_vfs)
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self._run_build_test(flavor_id_pfs)
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self._run_build_test(flavor_id_vfs, end_status='ERROR')
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@mock.patch('nova.virt.libvirt.LibvirtDriver._create_image')
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def test_create_server_with_VF_no_PF(self, img_mock):
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host_info = fakelibvirt.NUMAHostInfo(cpu_nodes=2, cpu_sockets=1,
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cpu_cores=2, cpu_threads=2,
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kB_mem=15740000)
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pci_info = fakelibvirt.HostPciSRIOVDevicesInfo(num_pfs=1, num_vfs=4)
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fake_connection = self._get_connection(host_info, pci_info)
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self.mock_conn.return_value = fake_connection
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# Create a flavor
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extra_spec_pfs = {"pci_passthrough:alias": "%s:1" %
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self.pfs_alias_name}
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extra_spec_vfs = {"pci_passthrough:alias": "%s:1" %
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self.vfs_alias_name}
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flavor_id_pfs = self._create_flavor(extra_spec=extra_spec_pfs)
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flavor_id_vfs = self._create_flavor(extra_spec=extra_spec_vfs)
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self._run_build_test(flavor_id_vfs)
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self._run_build_test(flavor_id_pfs, end_status='ERROR')
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class PCIServersTest(_PCIServersTestBase):
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@mock.patch('nova.virt.libvirt.LibvirtDriver._create_image')
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def test_create_server_with_pci_dev_and_numa(self, img_mock):
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"""Verifies that an instance can be booted with cpu pinning and with an
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assigned pci device.
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"""
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host_info = fakelibvirt.NUMAHostInfo(cpu_nodes=2, cpu_sockets=1,
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cpu_cores=2, cpu_threads=2,
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kB_mem=15740000)
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pci_info = fakelibvirt.HostPciSRIOVDevicesInfo(num_pfs=1, numa_node=1)
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fake_connection = self._get_connection(host_info, pci_info)
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self.mock_conn.return_value = fake_connection
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# create a flavor
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extra_spec = {
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'hw:cpu_policy': 'dedicated',
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'pci_passthrough:alias': '%s:1' % self.pfs_alias_name,
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}
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flavor_id = self._create_flavor(extra_spec=extra_spec)
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self._run_build_test(flavor_id)
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@mock.patch('nova.virt.libvirt.LibvirtDriver._create_image')
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def test_create_server_with_pci_dev_and_numa_fails(self, img_mock):
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"""This test ensures that it is not possible to allocated CPU and
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memory resources from one NUMA node and a PCI device from another.
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"""
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host_info = fakelibvirt.NUMAHostInfo(cpu_nodes=2, cpu_sockets=1,
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cpu_cores=2, cpu_threads=2,
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kB_mem=15740000)
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pci_info = fakelibvirt.HostPciSRIOVDevicesInfo(num_pfs=1, numa_node=0)
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fake_connection = self._get_connection(host_info, pci_info)
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self.mock_conn.return_value = fake_connection
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# boot one instance with no PCI device to "fill up" NUMA node 0
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extra_spec = {
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'hw:cpu_policy': 'dedicated',
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}
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flavor_id = self._create_flavor(vcpu=4, extra_spec=extra_spec)
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self._run_build_test(flavor_id)
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# now boot one with a PCI device, which should fail to boot
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extra_spec['pci_passthrough:alias'] = '%s:1' % self.pfs_alias_name
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flavor_id = self._create_flavor(extra_spec=extra_spec)
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self._run_build_test(flavor_id, end_status='ERROR')
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class PCIServersWithNUMAPoliciesTest(_PCIServersTestBase):
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# PFs will be removed from pools unless they are specifically
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# requested, so we explicitly request them with the 'device_type'
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# attribute
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pci_alias = [
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'{"vendor_id":"8086", "product_id":"1528", "name":"%s", '
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'"device_type":"%s", "numa_policy":"%s"}' % (
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_PCIServersTestBase.pfs_alias_name,
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fields.PciDeviceType.SRIOV_PF,
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fields.PCINUMAAffinityPolicy.PREFERRED
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),
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'{"vendor_id":"8086", "product_id":"1515", "name":"%s"}' % (
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_PCIServersTestBase.vfs_alias_name),
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]
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@mock.patch('nova.virt.libvirt.LibvirtDriver._create_image')
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def test_create_server_with_pci_dev_and_numa(self, img_mock):
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"""Validate behavior of 'preferred' PCI NUMA policy.
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This test ensures that it *is* possible to allocate CPU and memory
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resources from one NUMA node and a PCI device from another *if* PCI
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NUMA policies are in use.
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"""
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host_info = fakelibvirt.NUMAHostInfo(cpu_nodes=2, cpu_sockets=1,
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cpu_cores=2, cpu_threads=2,
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kB_mem=15740000)
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pci_info = fakelibvirt.HostPciSRIOVDevicesInfo(num_pfs=1, numa_node=0)
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fake_connection = self._get_connection(host_info, pci_info)
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self.mock_conn.return_value = fake_connection
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# boot one instance with no PCI device to "fill up" NUMA node 0
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extra_spec = {
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'hw:cpu_policy': 'dedicated',
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}
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flavor_id = self._create_flavor(vcpu=4, extra_spec=extra_spec)
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self._run_build_test(flavor_id)
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# now boot one with a PCI device, which should succeed thanks to the
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# use of the PCI policy
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extra_spec['pci_passthrough:alias'] = '%s:1' % self.pfs_alias_name
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flavor_id = self._create_flavor(extra_spec=extra_spec)
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self._run_build_test(flavor_id)
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