class AllocatedCapacityWeigherTestCase(test.TestCase):
def setUp(self):
super(AllocatedCapacityWeigherTestCase, self).setUp()
self.host_manager = fakes.FakeHostManager()
self.weight_handler = HostWeightHandler("cinder.scheduler.weights")
def _get_weighed_host(self, hosts, weight_properties=None):
if weight_properties is None:
weight_properties = {}
return self.weight_handler.get_weighed_objects([ACW], hosts, weight_properties)[0]
@mock.patch("cinder.db.sqlalchemy.api.service_get_all_by_topic")
def _get_all_hosts(self, _mock_service_get_all_by_topic):
ctxt = context.get_admin_context()
fakes.mock_host_manager_db_calls(_mock_service_get_all_by_topic)
host_states = self.host_manager.get_all_host_states(ctxt)
_mock_service_get_all_by_topic.assert_called_once_with(ctxt, CONF.volume_topic)
return host_states
def test_default_of_spreading_first(self):
hostinfo_list = self._get_all_hosts()
# host1: allocated_capacity_gb=0, weight=0
# host2: allocated_capacity_gb=1748, weight=-1748
# host3: allocated_capacity_gb=256, weight=-256
# host4: allocated_capacity_gb=1848, weight=-1848
# so, host1 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, 0)
self.assertEqual(weighed_host.obj.host, "host1")
def test_capacity_weight_multiplier1(self):
self.flags(allocated_capacity_weight_multiplier=1.0)
hostinfo_list = self._get_all_hosts()
# host1: allocated_capacity_gb=0, weight=0
# host2: allocated_capacity_gb=1748, weight=1748
# host3: allocated_capacity_gb=256, weight=256
# host4: allocated_capacity_gb=1848, weight=1848
# so, host4 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, 1848.0)
self.assertEqual(weighed_host.obj.host, "host4")
def test_capacity_weight_multiplier2(self):
self.flags(allocated_capacity_weight_multiplier=-2.0)
hostinfo_list = self._get_all_hosts()
# host1: allocated_capacity_gb=0, weight=0
# host2: allocated_capacity_gb=1748, weight=-3496
# host3: allocated_capacity_gb=256, weight=-512
# host4: allocated_capacity_gb=1848, weight=-3696
# so, host1 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, 0)
self.assertEqual(weighed_host.obj.host, "host1")
class VolumeNumberWeigherTestCase(test.TestCase):
def setUp(self):
super(VolumeNumberWeigherTestCase, self).setUp()
self.context = context.get_admin_context()
self.host_manager = fakes.FakeHostManager()
self.weight_handler = HostWeightHandler('cinder.scheduler.weights')
def _get_weighed_host(self, hosts, weight_properties=None):
if weight_properties is None:
weight_properties = {'context': self.context}
return self.weight_handler.get_weighed_objects([VolumeNumberWeigher],
hosts,
weight_properties)[0]
@mock.patch('cinder.db.sqlalchemy.api.service_get_all_by_topic')
def _get_all_hosts(self, _mock_service_get_all_by_topic, disabled=False):
ctxt = context.get_admin_context()
fakes.mock_host_manager_db_calls(_mock_service_get_all_by_topic,
disabled=disabled)
host_states = self.host_manager.get_all_host_states(ctxt)
_mock_service_get_all_by_topic.assert_called_once_with(
ctxt, CONF.volume_topic, disabled=disabled)
return host_states
def test_volume_number_weight_multiplier1(self):
self.flags(volume_number_multiplier=-1.0)
hostinfo_list = self._get_all_hosts()
# host1: 1 volume
# host2: 2 volumes
# host3: 3 volumes
# host4: 4 volumes
# host5: 5 volumes
# so, host1 should win:
with mock.patch.object(api, 'volume_data_get_for_host',
fake_volume_data_get_for_host):
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, -1.0)
self.assertEqual(utils.extract_host(weighed_host.obj.host),
'host1')
def test_volume_number_weight_multiplier2(self):
self.flags(volume_number_multiplier=1.0)
hostinfo_list = self._get_all_hosts()
# host1: 1 volume
# host2: 2 volumes
# host3: 3 volumes
# host4: 4 volumes
# host5: 5 volumes
# so, host5 should win:
with mock.patch.object(api, 'volume_data_get_for_host',
fake_volume_data_get_for_host):
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, 5.0)
self.assertEqual(utils.extract_host(weighed_host.obj.host),
'host5')
def setUp(self):
super(CapacityWeigherTestCase, self).setUp()
self.host_manager = fakes.FakeHostManager()
self.weight_handler = HostWeightHandler('cinder.scheduler.weights')
class CapacityWeigherTestCase(test.TestCase):
def setUp(self):
super(CapacityWeigherTestCase, self).setUp()
self.host_manager = fakes.FakeHostManager()
self.weight_handler = HostWeightHandler('cinder.scheduler.weights')
def _get_weighed_host(self, hosts, weight_properties=None):
if weight_properties is None:
weight_properties = {'size': 1}
return self.weight_handler.get_weighed_objects([CapacityWeigher],
hosts,
weight_properties)[0]
@mock.patch('cinder.db.sqlalchemy.api.service_get_all_by_topic')
def _get_all_hosts(self, _mock_service_get_all_by_topic, disabled=False):
ctxt = context.get_admin_context()
fakes.mock_host_manager_db_calls(_mock_service_get_all_by_topic,
disabled=disabled)
host_states = self.host_manager.get_all_host_states(ctxt)
_mock_service_get_all_by_topic.assert_called_once_with(
ctxt, CONF.volume_topic, disabled=disabled)
return host_states
# If thin_provisioning_support = False, use the following formula:
# free = free_space - math.floor(total * reserved)
# Otherwise, use the following formula:
# free = (total * host_state.max_over_subscription_ratio
# - host_state.provisioned_capacity_gb
# - math.floor(total * reserved))
def test_default_of_spreading_first(self):
hostinfo_list = self._get_all_hosts()
# host1: thin_provisioning_support = False
# free_capacity_gb=1024,
# free=1024-math.floor(1024*0.1)=922
# host2: thin_provisioning_support = True
# free_capacity_gb=300,
# free=2048*1.5-1748-math.floor(2048*0.1)=1120
# host3: thin_provisioning_support = False
# free_capacity_gb=512, free=256-512*0=256
# host4: thin_provisioning_support = True
# free_capacity_gb=200,
# free=2048*1.0-2047-math.floor(2048*0.05)=-101
# host5: free_capacity_gb=unknown free=-1
# so, host2 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, 1120.0)
self.assertEqual(utils.extract_host(weighed_host.obj.host), 'host2')
def test_capacity_weight_multiplier1(self):
self.flags(capacity_weight_multiplier=-1.0)
hostinfo_list = self._get_all_hosts()
# host1: thin_provisioning_support = False
# free_capacity_gb=1024,
# free=-(1024-math.floor(1024*0.1))=-922
# host2: thin_provisioning_support = True
# free_capacity_gb=300,
# free=-(2048*1.5-1748-math.floor(2048*0.1))=-1120
# host3: thin_provisioning_support = False
# free_capacity_gb=512, free=-(256-512*0)=-256
# host4: thin_provisioning_support = True
# free_capacity_gb=200,
# free=-(2048*1.0-2047-math.floor(2048*0.05))=101
# host5: free_capacity_gb=unknown free=-float('inf')
# so, host4 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, 101.0)
self.assertEqual(utils.extract_host(weighed_host.obj.host), 'host4')
def test_capacity_weight_multiplier2(self):
self.flags(capacity_weight_multiplier=2.0)
hostinfo_list = self._get_all_hosts()
# host1: thin_provisioning_support = False
# free_capacity_gb=1024,
# free=(1024-math.floor(1024*0.1))*2=1844
# host2: thin_provisioning_support = True
# free_capacity_gb=300,
# free=(2048*1.5-1748-math.floor(2048*0.1))*2=2240
# host3: thin_provisioning_support = False
# free_capacity_gb=512, free=(256-512*0)*2=512
# host4: thin_provisioning_support = True
# free_capacity_gb=200,
# free=(2048*1.0-2047-math.floor(2048*0.05))*2=-202
# host5: free_capacity_gb=unknown free=-2
# so, host2 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, 1120.0 * 2)
self.assertEqual(utils.extract_host(weighed_host.obj.host), 'host2')
def setUp(self):
super(CapacityWeigherTestCase, self).setUp()
self.host_manager = fakes.FakeHostManager()
self.weight_handler = HostWeightHandler('cinder.scheduler.weights')
class CapacityWeigherTestCase(test.TestCase):
def setUp(self):
super(CapacityWeigherTestCase, self).setUp()
self.host_manager = fakes.FakeHostManager()
self.weight_handler = HostWeightHandler('cinder.scheduler.weights')
def _get_weighed_host(self, hosts, weight_properties=None):
if weight_properties is None:
weight_properties = {}
return self.weight_handler.get_weighed_objects([CapacityWeigher],
hosts,
weight_properties)[0]
@mock.patch('cinder.db.sqlalchemy.api.service_get_all_by_topic')
def _get_all_hosts(self, _mock_service_get_all_by_topic, disabled=False):
ctxt = context.get_admin_context()
fakes.mock_host_manager_db_calls(_mock_service_get_all_by_topic,
disabled=disabled)
host_states = self.host_manager.get_all_host_states(ctxt)
_mock_service_get_all_by_topic.assert_called_once_with(
ctxt, CONF.volume_topic, disabled=disabled)
return host_states
def test_default_of_spreading_first(self):
hostinfo_list = self._get_all_hosts()
# host1: free_capacity_gb=1024, free=1024*(1-0.1)
# host2: free_capacity_gb=300, free=300*(1-0.1)
# host3: free_capacity_gb=512, free=256
# host4: free_capacity_gb=200, free=200*(1-0.05)
# host5: free_capacity_gb=unknown free=-1
# so, host1 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, 921.0)
self.assertEqual(
utils.extract_host(weighed_host.obj.host), 'host1')
def test_capacity_weight_multiplier1(self):
self.flags(capacity_weight_multiplier=-1.0)
hostinfo_list = self._get_all_hosts()
# host1: free_capacity_gb=1024, free=-1024*(1-0.1)
# host2: free_capacity_gb=300, free=-300*(1-0.1)
# host3: free_capacity_gb=512, free=-256
# host4: free_capacity_gb=200, free=-200*(1-0.05)
# host5: free_capacity_gb=unknown free=-float('inf')
# so, host4 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, -190.0)
self.assertEqual(
utils.extract_host(weighed_host.obj.host), 'host4')
def test_capacity_weight_multiplier2(self):
self.flags(capacity_weight_multiplier=2.0)
hostinfo_list = self._get_all_hosts()
# host1: free_capacity_gb=1024, free=1024*(1-0.1)*2
# host2: free_capacity_gb=300, free=300*(1-0.1)*2
# host3: free_capacity_gb=512, free=256*2
# host4: free_capacity_gb=200, free=200*(1-0.05)*2
# host5: free_capacity_gb=unknown free=-2
# so, host1 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, 921.0 * 2)
self.assertEqual(
utils.extract_host(weighed_host.obj.host), 'host1')
class CapacityWeigherTestCase(test.TestCase):
def setUp(self):
super(CapacityWeigherTestCase, self).setUp()
self.host_manager = fakes.FakeHostManager()
self.weight_handler = HostWeightHandler('cinder.scheduler.weights')
def _get_weighed_host(self, hosts, weight_properties=None):
if weight_properties is None:
weight_properties = {}
return self.weight_handler.get_weighed_objects([CapacityWeigher],
hosts,
weight_properties)[0]
@mock.patch('cinder.db.sqlalchemy.api.service_get_all_by_topic')
def _get_all_hosts(self, _mock_service_get_all_by_topic):
ctxt = context.get_admin_context()
fakes.mock_host_manager_db_calls(_mock_service_get_all_by_topic)
host_states = self.host_manager.get_all_host_states(ctxt)
_mock_service_get_all_by_topic.assert_called_once_with(
ctxt, CONF.volume_topic)
return host_states
def test_default_of_spreading_first(self):
hostinfo_list = self._get_all_hosts()
# host1: free_capacity_gb=1024, free=1024*(1-0.1)
# host2: free_capacity_gb=300, free=300*(1-0.1)
# host3: free_capacity_gb=512, free=512
# host4: free_capacity_gb=200, free=200*(1-0.05)
# so, host1 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, 921.0)
self.assertEqual(weighed_host.obj.host, 'host1')
def test_capacity_weight_multiplier1(self):
self.flags(capacity_weight_multiplier=-1.0)
hostinfo_list = self._get_all_hosts()
# host1: free_capacity_gb=1024, free=-1024*(1-0.1)
# host2: free_capacity_gb=300, free=-300*(1-0.1)
# host3: free_capacity_gb=512, free=-512
# host4: free_capacity_gb=200, free=-200*(1-0.05)
# so, host4 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, -190.0)
self.assertEqual(weighed_host.obj.host, 'host4')
def test_capacity_weight_multiplier2(self):
self.flags(capacity_weight_multiplier=2.0)
hostinfo_list = self._get_all_hosts()
# host1: free_capacity_gb=1024, free=1024*(1-0.1)*2
# host2: free_capacity_gb=300, free=300*(1-0.1)*2
# host3: free_capacity_gb=512, free=512*2
# host4: free_capacity_gb=200, free=200*(1-0.05)*2
# so, host1 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, 921.0 * 2)
self.assertEqual(weighed_host.obj.host, 'host1')
class CapacityWeigherTestCase(test.TestCase):
def setUp(self):
super(CapacityWeigherTestCase, self).setUp()
self.host_manager = fakes.FakeHostManager()
self.weight_handler = HostWeightHandler('cinder.scheduler.weights')
self.weight_classes = self.weight_handler.get_all_classes()
def _get_weighed_host(self, hosts, weight_properties=None):
if weight_properties is None:
weight_properties = {}
return self.weight_handler.get_weighed_objects(self.weight_classes,
hosts,
weight_properties)[0]
def _get_all_hosts(self):
ctxt = context.get_admin_context()
fakes.mox_host_manager_db_calls(self.mox, ctxt)
self.mox.ReplayAll()
host_states = self.host_manager.get_all_host_states(ctxt)
self.mox.VerifyAll()
self.mox.ResetAll()
return host_states
def test_default_of_spreading_first(self):
hostinfo_list = self._get_all_hosts()
# host1: free_capacity_gb=1024, free=1024*(1-0.1)
# host2: free_capacity_gb=300, free=300*(1-0.1)
# host3: free_capacity_gb=512, free=512
# host4: free_capacity_gb=200, free=200*(1-0.05)
# so, host1 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, 921.0)
self.assertEqual(weighed_host.obj.host, 'host1')
def test_capacity_weight_multiplier1(self):
self.flags(capacity_weight_multiplier=-1.0)
hostinfo_list = self._get_all_hosts()
# host1: free_capacity_gb=1024, free=-1024*(1-0.1)
# host2: free_capacity_gb=300, free=-300*(1-0.1)
# host3: free_capacity_gb=512, free=-512
# host4: free_capacity_gb=200, free=-200*(1-0.05)
# so, host4 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, -190.0)
self.assertEqual(weighed_host.obj.host, 'host4')
def test_capacity_weight_multiplier2(self):
self.flags(capacity_weight_multiplier=2.0)
hostinfo_list = self._get_all_hosts()
# host1: free_capacity_gb=1024, free=1024*(1-0.1)*2
# host2: free_capacity_gb=300, free=300*(1-0.1)*2
# host3: free_capacity_gb=512, free=512*2
# host4: free_capacity_gb=200, free=200*(1-0.05)*2
# so, host1 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, 921.0 * 2)
self.assertEqual(weighed_host.obj.host, 'host1')
class AllocatedCapacityWeigherTestCase(test.TestCase):
def setUp(self):
super(AllocatedCapacityWeigherTestCase, self).setUp()
self.host_manager = fakes.FakeHostManager()
self.weight_handler = HostWeightHandler('cinder.scheduler.weights')
def _get_weighed_host(self, hosts, weight_properties=None):
if weight_properties is None:
weight_properties = {}
return self.weight_handler.get_weighed_objects([ACW], hosts,
weight_properties)[0]
@mock.patch('cinder.db.sqlalchemy.api.service_get_all_by_topic')
def _get_all_hosts(self, _mock_service_get_all_by_topic, disabled=False):
ctxt = context.get_admin_context()
fakes.mock_host_manager_db_calls(_mock_service_get_all_by_topic,
disabled=disabled)
host_states = self.host_manager.get_all_host_states(ctxt)
_mock_service_get_all_by_topic.assert_called_once_with(
ctxt, CONF.volume_topic, disabled=disabled)
return host_states
def test_default_of_spreading_first(self):
hostinfo_list = self._get_all_hosts()
# host1: allocated_capacity_gb=0, weight=0
# host2: allocated_capacity_gb=1748, weight=-1748
# host3: allocated_capacity_gb=256, weight=-256
# host4: allocated_capacity_gb=1848, weight=-1848
# so, host1 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, 0)
self.assertEqual(
utils.extract_host(weighed_host.obj.host), 'host1')
def test_capacity_weight_multiplier1(self):
self.flags(allocated_capacity_weight_multiplier=1.0)
hostinfo_list = self._get_all_hosts()
# host1: allocated_capacity_gb=0, weight=0
# host2: allocated_capacity_gb=1748, weight=1748
# host3: allocated_capacity_gb=256, weight=256
# host4: allocated_capacity_gb=1848, weight=1848
# so, host4 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, 1848.0)
self.assertEqual(
utils.extract_host(weighed_host.obj.host), 'host4')
def test_capacity_weight_multiplier2(self):
self.flags(allocated_capacity_weight_multiplier=-2.0)
hostinfo_list = self._get_all_hosts()
# host1: allocated_capacity_gb=0, weight=0
# host2: allocated_capacity_gb=1748, weight=-3496
# host3: allocated_capacity_gb=256, weight=-512
# host4: allocated_capacity_gb=1848, weight=-3696
# so, host1 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, 0)
self.assertEqual(
utils.extract_host(weighed_host.obj.host), 'host1')
def setUp(self):
super(VolumeNumberWeigherTestCase, self).setUp()
self.context = context.get_admin_context()
self.host_manager = fakes.FakeHostManager()
self.weight_handler = HostWeightHandler('cinder.scheduler.weights')
class CapacityWeigherTestCase(test.TestCase):
def setUp(self):
super(CapacityWeigherTestCase, self).setUp()
self.host_manager = fakes.FakeHostManager()
self.weight_handler = HostWeightHandler('cinder.scheduler.weights')
def _get_weighed_host(self, hosts, weight_properties=None):
if weight_properties is None:
weight_properties = {}
return self.weight_handler.get_weighed_objects([CapacityWeigher],
hosts,
weight_properties)[0]
def _get_all_hosts(self):
ctxt = context.get_admin_context()
fakes.mox_host_manager_db_calls(self.mox, ctxt)
self.mox.ReplayAll()
host_states = self.host_manager.get_all_host_states(ctxt)
self.mox.VerifyAll()
self.mox.ResetAll()
return host_states
def test_default_of_spreading_first(self):
hostinfo_list = self._get_all_hosts()
# host1: free_capacity_gb=1024, free=1024*(1-0.1)
# host2: free_capacity_gb=300, free=300*(1-0.1)
# host3: free_capacity_gb=512, free=512
# host4: free_capacity_gb=200, free=200*(1-0.05)
# so, host1 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, 921.0)
self.assertEqual(weighed_host.obj.host, 'host1')
def test_capacity_weight_multiplier1(self):
self.flags(capacity_weight_multiplier=-1.0)
hostinfo_list = self._get_all_hosts()
# host1: free_capacity_gb=1024, free=-1024*(1-0.1)
# host2: free_capacity_gb=300, free=-300*(1-0.1)
# host3: free_capacity_gb=512, free=-512
# host4: free_capacity_gb=200, free=-200*(1-0.05)
# so, host4 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, -190.0)
self.assertEqual(weighed_host.obj.host, 'host4')
def test_capacity_weight_multiplier2(self):
self.flags(capacity_weight_multiplier=2.0)
hostinfo_list = self._get_all_hosts()
# host1: free_capacity_gb=1024, free=1024*(1-0.1)*2
# host2: free_capacity_gb=300, free=300*(1-0.1)*2
# host3: free_capacity_gb=512, free=512*2
# host4: free_capacity_gb=200, free=200*(1-0.05)*2
# so, host1 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, 921.0 * 2)
self.assertEqual(weighed_host.obj.host, 'host1')
def setUp(self):
super(CapacityWeigherTestCase, self).setUp()
self.host_manager = fakes.FakeHostManager()
self.weight_handler = HostWeightHandler("cinder.scheduler.weights")
self.weight_classes = self.weight_handler.get_all_classes()
class CapacityWeigherTestCase(test.TestCase):
def setUp(self):
super(CapacityWeigherTestCase, self).setUp()
self.host_manager = fakes.FakeHostManager()
self.weight_handler = HostWeightHandler('cinder.scheduler.weights')
def _get_weighed_host(self, hosts, weight_properties=None):
if weight_properties is None:
weight_properties = {'size': 1}
return self.weight_handler.get_weighed_objects([CapacityWeigher],
hosts,
weight_properties)[0]
@mock.patch('cinder.db.sqlalchemy.api.service_get_all_by_topic')
def _get_all_hosts(self, _mock_service_get_all_by_topic, disabled=False):
ctxt = context.get_admin_context()
fakes.mock_host_manager_db_calls(_mock_service_get_all_by_topic,
disabled=disabled)
host_states = self.host_manager.get_all_host_states(ctxt)
_mock_service_get_all_by_topic.assert_called_once_with(
ctxt, CONF.volume_topic, disabled=disabled)
return host_states
# If thin_provisioning_support = False, use the following formula:
# free = free_space - math.floor(total * reserved)
# Otherwise, use the following formula:
# free = (total * host_state.max_over_subscription_ratio
# - host_state.provisioned_capacity_gb
# - math.floor(total * reserved))
def test_default_of_spreading_first(self):
hostinfo_list = self._get_all_hosts()
# host1: thin_provisioning_support = False
# free_capacity_gb=1024,
# free=1024-math.floor(1024*0.1)=922
# host2: thin_provisioning_support = True
# free_capacity_gb=300,
# free=2048*1.5-1748-math.floor(2048*0.1)=1120
# host3: thin_provisioning_support = False
# free_capacity_gb=512, free=256-512*0=256
# host4: thin_provisioning_support = True
# free_capacity_gb=200,
# free=2048*1.0-2047-math.floor(2048*0.05)=-101
# host5: free_capacity_gb=unknown free=-1
# so, host2 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, 1120.0)
self.assertEqual(
utils.extract_host(weighed_host.obj.host), 'host2')
def test_capacity_weight_multiplier1(self):
self.flags(capacity_weight_multiplier=-1.0)
hostinfo_list = self._get_all_hosts()
# host1: thin_provisioning_support = False
# free_capacity_gb=1024,
# free=-(1024-math.floor(1024*0.1))=-922
# host2: thin_provisioning_support = True
# free_capacity_gb=300,
# free=-(2048*1.5-1748-math.floor(2048*0.1))=-1120
# host3: thin_provisioning_support = False
# free_capacity_gb=512, free=-(256-512*0)=-256
# host4: thin_provisioning_support = True
# free_capacity_gb=200,
# free=-(2048*1.0-2047-math.floor(2048*0.05))=101
# host5: free_capacity_gb=unknown free=-float('inf')
# so, host4 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, 101.0)
self.assertEqual(
utils.extract_host(weighed_host.obj.host), 'host4')
def test_capacity_weight_multiplier2(self):
self.flags(capacity_weight_multiplier=2.0)
hostinfo_list = self._get_all_hosts()
# host1: thin_provisioning_support = False
# free_capacity_gb=1024,
# free=(1024-math.floor(1024*0.1))*2=1844
# host2: thin_provisioning_support = True
# free_capacity_gb=300,
# free=(2048*1.5-1748-math.floor(2048*0.1))*2=2240
# host3: thin_provisioning_support = False
# free_capacity_gb=512, free=(256-512*0)*2=512
# host4: thin_provisioning_support = True
# free_capacity_gb=200,
# free=(2048*1.0-2047-math.floor(2048*0.05))*2=-202
# host5: free_capacity_gb=unknown free=-2
# so, host2 should win:
weighed_host = self._get_weighed_host(hostinfo_list)
self.assertEqual(weighed_host.weight, 1120.0 * 2)
self.assertEqual(
utils.extract_host(weighed_host.obj.host), 'host2')