1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import mock
from nova.scheduler.filters import ram_filter
from nova import test
from nova.tests.scheduler import fakes
class TestRamFilter(test.NoDBTestCase):
def setUp(self):
super(TestRamFilter, self).setUp()
self.filt_cls = ram_filter.RamFilter()
def test_ram_filter_fails_on_memory(self):
ram_filter.RamFilter.ram_allocation_ratio = 1.0
filter_properties = {'instance_type': {'memory_mb': 1024}}
host = fakes.FakeHostState('host1', 'node1',
{'free_ram_mb': 1023, 'total_usable_ram_mb': 1024})
self.assertFalse(self.filt_cls.host_passes(host, filter_properties))
def test_ram_filter_passes(self):
ram_filter.RamFilter.ram_allocation_ratio = 1.0
filter_properties = {'instance_type': {'memory_mb': 1024}}
host = fakes.FakeHostState('host1', 'node1',
{'free_ram_mb': 1024, 'total_usable_ram_mb': 1024})
self.assertTrue(self.filt_cls.host_passes(host, filter_properties))
def test_ram_filter_oversubscribe(self):
ram_filter.RamFilter.ram_allocation_ratio = 2.0
filter_properties = {'instance_type': {'memory_mb': 1024}}
host = fakes.FakeHostState('host1', 'node1',
{'free_ram_mb': -1024, 'total_usable_ram_mb': 2048})
self.assertTrue(self.filt_cls.host_passes(host, filter_properties))
self.assertEqual(2048 * 2.0, host.limits['memory_mb'])
@mock.patch('nova.scheduler.filters.utils.aggregate_values_from_db')
class TestAggregateRamFilter(test.NoDBTestCase):
def setUp(self):
super(TestAggregateRamFilter, self).setUp()
self.filt_cls = ram_filter.AggregateRamFilter()
def test_aggregate_ram_filter_value_error(self, agg_mock):
self.flags(ram_allocation_ratio=1.0)
filter_properties = {'context': mock.sentinel.ctx,
'instance_type': {'memory_mb': 1024}}
host = fakes.FakeHostState('host1', 'node1',
{'free_ram_mb': 1024, 'total_usable_ram_mb': 1024})
agg_mock.return_value = set(['XXX'])
self.assertTrue(self.filt_cls.host_passes(host, filter_properties))
self.assertEqual(1024 * 1.0, host.limits['memory_mb'])
def test_aggregate_ram_filter_default_value(self, agg_mock):
self.flags(ram_allocation_ratio=1.0)
filter_properties = {'context': mock.sentinel.ctx,
'instance_type': {'memory_mb': 1024}}
host = fakes.FakeHostState('host1', 'node1',
{'free_ram_mb': 1023, 'total_usable_ram_mb': 1024})
# False: fallback to default flag w/o aggregates
agg_mock.return_value = set()
self.assertFalse(self.filt_cls.host_passes(host, filter_properties))
agg_mock.return_value = set(['2.0'])
# True: use ratio from aggregates
self.assertTrue(self.filt_cls.host_passes(host, filter_properties))
self.assertEqual(1024 * 2.0, host.limits['memory_mb'])
def test_aggregate_ram_filter_conflict_values(self, agg_mock):
self.flags(ram_allocation_ratio=1.0)
filter_properties = {'context': mock.sentinel.ctx,
'instance_type': {'memory_mb': 1024}}
host = fakes.FakeHostState('host1', 'node1',
{'free_ram_mb': 1023, 'total_usable_ram_mb': 1024})
agg_mock.return_value = set(['1.5', '2.0'])
# use the minimum ratio from aggregates
self.assertTrue(self.filt_cls.host_passes(host, filter_properties))
self.assertEqual(1024 * 1.5, host.limits['memory_mb'])
|
