597 lines
24 KiB
Python
597 lines
24 KiB
Python
# Copyright 2011 OpenStack Foundation
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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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"""
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Tests For Filter Scheduler.
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"""
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import mock
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from mox3 import mox
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from nova.compute import utils as compute_utils
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from nova.compute import vm_states
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from nova import context
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from nova import db
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from nova import exception
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from nova.scheduler import driver
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from nova.scheduler import filter_scheduler
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from nova.scheduler import host_manager
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from nova.scheduler import utils as scheduler_utils
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from nova.scheduler import weights
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from nova.tests.unit.scheduler import fakes
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from nova.tests.unit.scheduler import test_scheduler
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def fake_get_filtered_hosts(hosts, filter_properties, index):
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return list(hosts)
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class FilterSchedulerTestCase(test_scheduler.SchedulerTestCase):
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"""Test case for Filter Scheduler."""
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driver_cls = filter_scheduler.FilterScheduler
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def test_run_instance_no_hosts(self):
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sched = fakes.FakeFilterScheduler()
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uuid = 'fake-uuid1'
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fake_context = context.RequestContext('user', 'project')
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instance_properties = {'project_id': 1, 'os_type': 'Linux'}
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request_spec = {'instance_type': {'memory_mb': 1, 'root_gb': 1,
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'ephemeral_gb': 0},
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'instance_properties': instance_properties,
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'instance_uuids': [uuid]}
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self.mox.StubOutWithMock(compute_utils, 'add_instance_fault_from_exc')
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self.mox.StubOutWithMock(db, 'instance_update_and_get_original')
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old_ref, new_ref = db.instance_update_and_get_original(fake_context,
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uuid, {'vm_state': vm_states.ERROR, 'task_state':
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None}).AndReturn(({}, {}))
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compute_utils.add_instance_fault_from_exc(fake_context, new_ref,
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mox.IsA(exception.NoValidHost), mox.IgnoreArg())
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self.mox.StubOutWithMock(db, 'compute_node_get_all')
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db.compute_node_get_all(mox.IgnoreArg()).AndReturn([])
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self.mox.ReplayAll()
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sched.schedule_run_instance(
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fake_context, request_spec, None, None,
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None, None, {}, False)
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def test_run_instance_non_admin(self):
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self.was_admin = False
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def fake_get(context, *args, **kwargs):
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# make sure this is called with admin context, even though
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# we're using user context below
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self.was_admin = context.is_admin
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return {}
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sched = fakes.FakeFilterScheduler()
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self.stubs.Set(sched.host_manager, 'get_all_host_states', fake_get)
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fake_context = context.RequestContext('user', 'project')
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uuid = 'fake-uuid1'
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instance_properties = {'project_id': 1, 'os_type': 'Linux'}
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request_spec = {'instance_type': {'memory_mb': 1, 'local_gb': 1},
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'instance_properties': instance_properties,
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'instance_uuids': [uuid]}
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self.mox.StubOutWithMock(compute_utils, 'add_instance_fault_from_exc')
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self.mox.StubOutWithMock(db, 'instance_update_and_get_original')
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old_ref, new_ref = db.instance_update_and_get_original(fake_context,
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uuid, {'vm_state': vm_states.ERROR, 'task_state':
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None}).AndReturn(({}, {}))
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compute_utils.add_instance_fault_from_exc(fake_context, new_ref,
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mox.IsA(exception.NoValidHost), mox.IgnoreArg())
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self.mox.ReplayAll()
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sched.schedule_run_instance(
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fake_context, request_spec, None, None, None, None, {}, False)
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self.assertTrue(self.was_admin)
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def test_scheduler_includes_launch_index(self):
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fake_context = context.RequestContext('user', 'project')
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instance_opts = {'fake_opt1': 'meow'}
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request_spec = {'instance_uuids': ['fake-uuid1', 'fake-uuid2'],
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'instance_properties': instance_opts}
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instance1 = {'uuid': 'fake-uuid1'}
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instance2 = {'uuid': 'fake-uuid2'}
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def _has_launch_index(expected_index):
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"""Return a function that verifies the expected index."""
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def _check_launch_index(value):
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if 'instance_properties' in value:
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if 'launch_index' in value['instance_properties']:
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index = value['instance_properties']['launch_index']
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if index == expected_index:
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return True
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return False
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return _check_launch_index
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self.mox.StubOutWithMock(self.driver, '_schedule')
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self.mox.StubOutWithMock(self.driver, '_provision_resource')
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expected_filter_properties = {'retry': {'num_attempts': 1,
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'hosts': []}}
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self.driver._schedule(fake_context, request_spec,
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expected_filter_properties).AndReturn(['host1', 'host2'])
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# instance 1
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self.driver._provision_resource(
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fake_context, 'host1',
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mox.Func(_has_launch_index(0)), expected_filter_properties,
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None, None, None, None,
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instance_uuid='fake-uuid1',
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legacy_bdm_in_spec=False).AndReturn(instance1)
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# instance 2
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self.driver._provision_resource(
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fake_context, 'host2',
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mox.Func(_has_launch_index(1)), expected_filter_properties,
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None, None, None, None,
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instance_uuid='fake-uuid2',
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legacy_bdm_in_spec=False).AndReturn(instance2)
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self.mox.ReplayAll()
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self.driver.schedule_run_instance(fake_context, request_spec,
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None, None, None, None, {}, False)
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@mock.patch('nova.db.instance_extra_get_by_instance_uuid',
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return_value={'numa_topology': None,
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'pci_requests': None})
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def test_schedule_happy_day(self, mock_get_extra):
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"""Make sure there's nothing glaringly wrong with _schedule()
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by doing a happy day pass through.
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"""
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self.next_weight = 1.0
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def _fake_weigh_objects(_self, functions, hosts, options):
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self.next_weight += 2.0
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host_state = hosts[0]
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return [weights.WeighedHost(host_state, self.next_weight)]
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sched = fakes.FakeFilterScheduler()
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fake_context = context.RequestContext('user', 'project',
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is_admin=True)
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self.stubs.Set(sched.host_manager, 'get_filtered_hosts',
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fake_get_filtered_hosts)
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self.stubs.Set(weights.HostWeightHandler,
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'get_weighed_objects', _fake_weigh_objects)
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fakes.mox_host_manager_db_calls(self.mox, fake_context)
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request_spec = {'num_instances': 10,
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'instance_type': {'memory_mb': 512, 'root_gb': 512,
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'ephemeral_gb': 0,
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'vcpus': 1},
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'instance_properties': {'project_id': 1,
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'root_gb': 512,
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'memory_mb': 512,
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'ephemeral_gb': 0,
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'vcpus': 1,
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'os_type': 'Linux',
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'uuid': 'fake-uuid'}}
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self.mox.ReplayAll()
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weighed_hosts = sched._schedule(fake_context, request_spec, {})
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self.assertEqual(len(weighed_hosts), 10)
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for weighed_host in weighed_hosts:
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self.assertIsNotNone(weighed_host.obj)
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def test_max_attempts(self):
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self.flags(scheduler_max_attempts=4)
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self.assertEqual(4, scheduler_utils._max_attempts())
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def test_invalid_max_attempts(self):
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self.flags(scheduler_max_attempts=0)
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self.assertRaises(exception.NovaException,
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scheduler_utils._max_attempts)
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def test_retry_disabled(self):
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# Retry info should not get populated when re-scheduling is off.
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self.flags(scheduler_max_attempts=1)
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sched = fakes.FakeFilterScheduler()
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request_spec = dict(instance_properties={},
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instance_uuids=['fake-uuid1'])
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filter_properties = {}
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self.mox.StubOutWithMock(sched, '_schedule')
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self.mox.StubOutWithMock(sched, '_provision_resource')
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sched._schedule(self.context, request_spec,
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filter_properties).AndReturn(['host1'])
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sched._provision_resource(
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self.context, 'host1',
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request_spec, filter_properties,
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None, None, None, None,
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instance_uuid='fake-uuid1',
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legacy_bdm_in_spec=False)
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self.mox.ReplayAll()
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sched.schedule_run_instance(self.context, request_spec, None, None,
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None, None, filter_properties, False)
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def test_retry_force_hosts(self):
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# Retry info should not get populated when re-scheduling is off.
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self.flags(scheduler_max_attempts=2)
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sched = fakes.FakeFilterScheduler()
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request_spec = dict(instance_properties={},
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instance_uuids=['fake-uuid1'])
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filter_properties = {'force_hosts': ['force_host']}
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self.mox.StubOutWithMock(sched, '_schedule')
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self.mox.StubOutWithMock(sched, '_provision_resource')
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sched._schedule(self.context, request_spec,
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filter_properties).AndReturn(['host1'])
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sched._provision_resource(
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self.context, 'host1',
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request_spec, filter_properties,
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None, None, None, None,
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instance_uuid='fake-uuid1',
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legacy_bdm_in_spec=False)
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self.mox.ReplayAll()
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sched.schedule_run_instance(self.context, request_spec, None, None,
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None, None, filter_properties, False)
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def test_retry_force_nodes(self):
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# Retry info should not get populated when re-scheduling is off.
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self.flags(scheduler_max_attempts=2)
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sched = fakes.FakeFilterScheduler()
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request_spec = dict(instance_properties={},
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instance_uuids=['fake-uuid1'])
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filter_properties = {'force_nodes': ['force_node']}
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self.mox.StubOutWithMock(sched, '_schedule')
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self.mox.StubOutWithMock(sched, '_provision_resource')
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sched._schedule(self.context, request_spec,
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filter_properties).AndReturn(['host1'])
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sched._provision_resource(
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self.context, 'host1',
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request_spec, filter_properties,
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None, None, None, None,
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instance_uuid='fake-uuid1',
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legacy_bdm_in_spec=False)
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self.mox.ReplayAll()
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sched.schedule_run_instance(self.context, request_spec, None, None,
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None, None, filter_properties, False)
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def test_retry_attempt_one(self):
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# Test retry logic on initial scheduling attempt.
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self.flags(scheduler_max_attempts=2)
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sched = fakes.FakeFilterScheduler()
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request_spec = dict(instance_properties={},
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instance_uuids=['fake-uuid1'])
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filter_properties = {}
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expected_filter_properties = {'retry': {'num_attempts': 1,
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'hosts': []}}
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self.mox.StubOutWithMock(sched, '_schedule')
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self.mox.StubOutWithMock(sched, '_provision_resource')
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sched._schedule(self.context, request_spec,
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expected_filter_properties).AndReturn(['host1'])
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sched._provision_resource(
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self.context, 'host1',
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request_spec, expected_filter_properties,
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None, None, None, None,
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instance_uuid='fake-uuid1',
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legacy_bdm_in_spec=False)
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self.mox.ReplayAll()
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sched.schedule_run_instance(self.context, request_spec, None, None,
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None, None, filter_properties, False)
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def test_retry_attempt_two(self):
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# Test retry logic when re-scheduling.
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self.flags(scheduler_max_attempts=2)
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sched = fakes.FakeFilterScheduler()
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request_spec = dict(instance_properties={},
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instance_uuids=['fake-uuid1'])
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filter_properties = {'retry': {'num_attempts': 1}}
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expected_filter_properties = {'retry': {'num_attempts': 2}}
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self.mox.StubOutWithMock(sched, '_schedule')
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self.mox.StubOutWithMock(sched, '_provision_resource')
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sched._schedule(self.context, request_spec,
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expected_filter_properties).AndReturn(['host1'])
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sched._provision_resource(
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self.context, 'host1',
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request_spec, expected_filter_properties,
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None, None, None, None,
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instance_uuid='fake-uuid1',
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legacy_bdm_in_spec=False)
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self.mox.ReplayAll()
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sched.schedule_run_instance(self.context, request_spec, None, None,
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None, None, filter_properties, False)
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def test_retry_exceeded_max_attempts(self):
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# Test for necessary explosion when max retries is exceeded and that
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# the information needed in request_spec is still present for error
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# handling
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self.flags(scheduler_max_attempts=2)
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sched = fakes.FakeFilterScheduler()
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request_spec = dict(instance_properties={},
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instance_uuids=['fake-uuid1'])
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filter_properties = {'retry': {'num_attempts': 2}}
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self.mox.ReplayAll()
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self.assertRaises(exception.NoValidHost, sched.schedule_run_instance,
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self.context, request_spec, None, None,
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None, None, filter_properties, False)
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def test_add_retry_host(self):
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retry = dict(num_attempts=1, hosts=[])
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filter_properties = dict(retry=retry)
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host = "fakehost"
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node = "fakenode"
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scheduler_utils._add_retry_host(filter_properties, host, node)
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hosts = filter_properties['retry']['hosts']
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self.assertEqual(1, len(hosts))
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self.assertEqual([host, node], hosts[0])
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def test_post_select_populate(self):
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# Test addition of certain filter props after a node is selected.
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retry = {'hosts': [], 'num_attempts': 1}
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filter_properties = {'retry': retry}
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host_state = host_manager.HostState('host', 'node')
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host_state.limits['vcpus'] = 5
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scheduler_utils.populate_filter_properties(filter_properties,
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host_state)
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self.assertEqual(['host', 'node'],
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filter_properties['retry']['hosts'][0])
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self.assertEqual({'vcpus': 5}, host_state.limits)
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@mock.patch('nova.db.instance_extra_get_by_instance_uuid',
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return_value={'numa_topology': None,
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'pci_requests': None})
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def test_schedule_host_pool(self, mock_get_extra):
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"""Make sure the scheduler_host_subset_size property works properly."""
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self.flags(scheduler_host_subset_size=2)
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sched = fakes.FakeFilterScheduler()
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fake_context = context.RequestContext('user', 'project',
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is_admin=True)
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self.stubs.Set(sched.host_manager, 'get_filtered_hosts',
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fake_get_filtered_hosts)
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fakes.mox_host_manager_db_calls(self.mox, fake_context)
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instance_properties = {'project_id': 1,
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'root_gb': 512,
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'memory_mb': 512,
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'ephemeral_gb': 0,
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'vcpus': 1,
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'os_type': 'Linux',
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'uuid': 'fake-uuid'}
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request_spec = dict(instance_properties=instance_properties,
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instance_type={})
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filter_properties = {}
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self.mox.ReplayAll()
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hosts = sched._schedule(self.context, request_spec,
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filter_properties=filter_properties)
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# one host should be chosen
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self.assertEqual(len(hosts), 1)
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@mock.patch('nova.db.instance_extra_get_by_instance_uuid',
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return_value={'numa_topology': None,
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'pci_requests': None})
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def test_schedule_large_host_pool(self, mock_get_extra):
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"""Hosts should still be chosen if pool size
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is larger than number of filtered hosts.
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"""
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sched = fakes.FakeFilterScheduler()
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fake_context = context.RequestContext('user', 'project',
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is_admin=True)
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self.flags(scheduler_host_subset_size=20)
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self.stubs.Set(sched.host_manager, 'get_filtered_hosts',
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fake_get_filtered_hosts)
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fakes.mox_host_manager_db_calls(self.mox, fake_context)
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instance_properties = {'project_id': 1,
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'root_gb': 512,
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'memory_mb': 512,
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'ephemeral_gb': 0,
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'vcpus': 1,
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'os_type': 'Linux',
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'uuid': 'fake-uuid'}
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request_spec = dict(instance_properties=instance_properties,
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instance_type={})
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filter_properties = {}
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self.mox.ReplayAll()
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hosts = sched._schedule(self.context, request_spec,
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filter_properties=filter_properties)
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# one host should be chose
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self.assertEqual(len(hosts), 1)
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@mock.patch('nova.db.instance_extra_get_by_instance_uuid',
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return_value={'numa_topology': None,
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'pci_requests': None})
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def test_schedule_chooses_best_host(self, mock_get_extra):
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"""If scheduler_host_subset_size is 1, the largest host with greatest
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weight should be returned.
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"""
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self.flags(scheduler_host_subset_size=1)
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sched = fakes.FakeFilterScheduler()
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fake_context = context.RequestContext('user', 'project',
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is_admin=True)
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self.stubs.Set(sched.host_manager, 'get_filtered_hosts',
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fake_get_filtered_hosts)
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fakes.mox_host_manager_db_calls(self.mox, fake_context)
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self.next_weight = 50
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def _fake_weigh_objects(_self, functions, hosts, options):
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this_weight = self.next_weight
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self.next_weight = 0
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host_state = hosts[0]
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return [weights.WeighedHost(host_state, this_weight)]
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instance_properties = {'project_id': 1,
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'root_gb': 512,
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'memory_mb': 512,
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'ephemeral_gb': 0,
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'vcpus': 1,
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'os_type': 'Linux',
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'uuid': 'fake-uuid'}
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request_spec = dict(instance_properties=instance_properties,
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instance_type={})
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self.stubs.Set(weights.HostWeightHandler,
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'get_weighed_objects', _fake_weigh_objects)
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|
filter_properties = {}
|
|
self.mox.ReplayAll()
|
|
hosts = sched._schedule(self.context, request_spec,
|
|
filter_properties=filter_properties)
|
|
|
|
# one host should be chosen
|
|
self.assertEqual(1, len(hosts))
|
|
|
|
self.assertEqual(50, hosts[0].weight)
|
|
|
|
@mock.patch('nova.db.instance_extra_get_by_instance_uuid',
|
|
return_value={'numa_topology': None,
|
|
'pci_requests': None})
|
|
def test_select_destinations(self, mock_get_extra):
|
|
"""select_destinations is basically a wrapper around _schedule().
|
|
|
|
Similar to the _schedule tests, this just does a happy path test to
|
|
ensure there is nothing glaringly wrong.
|
|
"""
|
|
|
|
self.next_weight = 1.0
|
|
|
|
selected_hosts = []
|
|
selected_nodes = []
|
|
|
|
def _fake_weigh_objects(_self, functions, hosts, options):
|
|
self.next_weight += 2.0
|
|
host_state = hosts[0]
|
|
selected_hosts.append(host_state.host)
|
|
selected_nodes.append(host_state.nodename)
|
|
return [weights.WeighedHost(host_state, self.next_weight)]
|
|
|
|
sched = fakes.FakeFilterScheduler()
|
|
fake_context = context.RequestContext('user', 'project',
|
|
is_admin=True)
|
|
|
|
self.stubs.Set(sched.host_manager, 'get_filtered_hosts',
|
|
fake_get_filtered_hosts)
|
|
self.stubs.Set(weights.HostWeightHandler,
|
|
'get_weighed_objects', _fake_weigh_objects)
|
|
fakes.mox_host_manager_db_calls(self.mox, fake_context)
|
|
|
|
request_spec = {'instance_type': {'memory_mb': 512, 'root_gb': 512,
|
|
'ephemeral_gb': 0,
|
|
'vcpus': 1},
|
|
'instance_properties': {'project_id': 1,
|
|
'root_gb': 512,
|
|
'memory_mb': 512,
|
|
'ephemeral_gb': 0,
|
|
'vcpus': 1,
|
|
'os_type': 'Linux',
|
|
'uuid': 'fake-uuid'},
|
|
'num_instances': 1}
|
|
self.mox.ReplayAll()
|
|
dests = sched.select_destinations(fake_context, request_spec, {})
|
|
(host, node) = (dests[0]['host'], dests[0]['nodename'])
|
|
self.assertEqual(host, selected_hosts[0])
|
|
self.assertEqual(node, selected_nodes[0])
|
|
|
|
@mock.patch.object(filter_scheduler.FilterScheduler, '_schedule')
|
|
def test_select_destinations_notifications(self, mock_schedule):
|
|
mock_schedule.return_value = [mock.Mock()]
|
|
|
|
with mock.patch.object(self.driver.notifier, 'info') as mock_info:
|
|
request_spec = {'num_instances': 1}
|
|
|
|
self.driver.select_destinations(self.context, request_spec, {})
|
|
|
|
expected = [
|
|
mock.call(self.context, 'scheduler.select_destinations.start',
|
|
dict(request_spec=request_spec)),
|
|
mock.call(self.context, 'scheduler.select_destinations.end',
|
|
dict(request_spec=request_spec))]
|
|
self.assertEqual(expected, mock_info.call_args_list)
|
|
|
|
def test_select_destinations_no_valid_host(self):
|
|
|
|
def _return_no_host(*args, **kwargs):
|
|
return []
|
|
|
|
self.stubs.Set(self.driver, '_schedule', _return_no_host)
|
|
self.assertRaises(exception.NoValidHost,
|
|
self.driver.select_destinations, self.context,
|
|
{'num_instances': 1}, {})
|
|
|
|
def test_select_destinations_no_valid_host_not_enough(self):
|
|
# Tests that we have fewer hosts available than number of instances
|
|
# requested to build.
|
|
with mock.patch.object(self.driver, '_schedule',
|
|
return_value=[mock.sentinel.host1]):
|
|
try:
|
|
self.driver.select_destinations(
|
|
self.context, {'num_instances': 2}, {})
|
|
self.fail('Expected NoValidHost to be raised.')
|
|
except exception.NoValidHost as e:
|
|
# Make sure that we provided a reason why NoValidHost.
|
|
self.assertIn('reason', e.kwargs)
|
|
self.assertTrue(len(e.kwargs['reason']) > 0)
|
|
|
|
def test_handles_deleted_instance(self):
|
|
"""Test instance deletion while being scheduled."""
|
|
|
|
def _raise_instance_not_found(*args, **kwargs):
|
|
raise exception.InstanceNotFound(instance_id='123')
|
|
|
|
self.stubs.Set(driver, 'instance_update_db',
|
|
_raise_instance_not_found)
|
|
|
|
sched = fakes.FakeFilterScheduler()
|
|
|
|
fake_context = context.RequestContext('user', 'project')
|
|
host_state = host_manager.HostState('host2', 'node2')
|
|
weighted_host = weights.WeighedHost(host_state, 1.42)
|
|
filter_properties = {}
|
|
|
|
uuid = 'fake-uuid1'
|
|
instance_properties = {'project_id': 1, 'os_type': 'Linux'}
|
|
request_spec = {'instance_type': {'memory_mb': 1, 'local_gb': 1},
|
|
'instance_properties': instance_properties,
|
|
'instance_uuids': [uuid]}
|
|
sched._provision_resource(fake_context, weighted_host,
|
|
request_spec, filter_properties,
|
|
None, None, None, None)
|