2195885e77
Freeze functionality in the replication feature doesn't work as expected, since it is not being used on the scheduler to exclude backends or used on the API or volume nodes so API-to-Vol operations like delete and create snapshot will also work. This patch fixes the freeze mechanism by excluding frozen backends in the scheduler and checking the if the service is frozen on all other modifying operations. Since extend operation now goes through the scheduler it will be frozen there. Closes-Bug: #1616974 Change-Id: I4561500746c95b96136878ddfde8ca88e96b28c6
102 lines
4.0 KiB
Python
102 lines
4.0 KiB
Python
# Copyright 2013 eBay Inc.
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#
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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 Allocated Capacity Weigher.
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"""
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import mock
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from cinder.common import constants
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from cinder import context
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from cinder.scheduler import weights
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from cinder import test
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from cinder.tests.unit.scheduler import fakes
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from cinder.volume import utils
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class AllocatedCapacityWeigherTestCase(test.TestCase):
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def setUp(self):
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super(AllocatedCapacityWeigherTestCase, self).setUp()
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self.host_manager = fakes.FakeHostManager()
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self.weight_handler = weights.OrderedHostWeightHandler(
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'cinder.scheduler.weights')
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def _get_weighed_host(self, hosts, weight_properties=None):
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if weight_properties is None:
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weight_properties = {}
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return self.weight_handler.get_weighed_objects(
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[weights.capacity.AllocatedCapacityWeigher], hosts,
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weight_properties)[0]
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@mock.patch('cinder.db.sqlalchemy.api.service_get_all')
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def _get_all_backends(self, _mock_service_get_all, disabled=False):
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ctxt = context.get_admin_context()
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fakes.mock_host_manager_db_calls(_mock_service_get_all,
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disabled=disabled)
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host_states = self.host_manager.get_all_backend_states(ctxt)
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_mock_service_get_all.assert_called_once_with(
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ctxt,
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None, # backend_match_level
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topic=constants.VOLUME_TOPIC, frozen=False, disabled=disabled)
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return host_states
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def test_default_of_spreading_first(self):
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hostinfo_list = self._get_all_backends()
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# host1: allocated_capacity_gb=0, weight=0 Norm=0.0
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# host2: allocated_capacity_gb=1748, weight=-1748
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# host3: allocated_capacity_gb=256, weight=-256
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# host4: allocated_capacity_gb=1848, weight=-1848 Norm=-1.0
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# host5: allocated_capacity_gb=1548, weight=-1540
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# so, host1 should win:
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weighed_host = self._get_weighed_host(hostinfo_list)
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self.assertEqual(0.0, weighed_host.weight)
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self.assertEqual(
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'host1', utils.extract_host(weighed_host.obj.host))
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def test_capacity_weight_multiplier1(self):
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self.flags(allocated_capacity_weight_multiplier=1.0)
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hostinfo_list = self._get_all_backends()
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# host1: allocated_capacity_gb=0, weight=0 Norm=0.0
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# host2: allocated_capacity_gb=1748, weight=1748
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# host3: allocated_capacity_gb=256, weight=256
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# host4: allocated_capacity_gb=1848, weight=1848 Norm=1.0
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# host5: allocated_capacity_gb=1548, weight=1540
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# so, host4 should win:
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weighed_host = self._get_weighed_host(hostinfo_list)
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self.assertEqual(1.0, weighed_host.weight)
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self.assertEqual(
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'host4', utils.extract_host(weighed_host.obj.host))
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def test_capacity_weight_multiplier2(self):
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self.flags(allocated_capacity_weight_multiplier=-2.0)
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hostinfo_list = self._get_all_backends()
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# host1: allocated_capacity_gb=0, weight=0 Norm=0.0
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# host2: allocated_capacity_gb=1748, weight=-3496
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# host3: allocated_capacity_gb=256, weight=-512
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# host4: allocated_capacity_gb=1848, weight=-3696 Norm=-2.0
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# host5: allocated_capacity_gb=1548, weight=-3080
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# so, host1 should win:
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weighed_host = self._get_weighed_host(hostinfo_list)
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self.assertEqual(0.0, weighed_host.weight)
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self.assertEqual(
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'host1', utils.extract_host(weighed_host.obj.host))
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