def test_disk_filter_fails(self):
self.flags(disk_allocation_ratio=1.0)
filt_cls = disk_filter.DiskFilter()
filter_properties = {'instance_type': {'root_gb': 10,
'ephemeral_gb': 1, 'swap': 1024}}
host = fakes.FakeHostState('host1', 'node1',
{'free_disk_mb': 11 * 1024, 'total_usable_disk_gb': 13})
self.assertFalse(filt_cls.host_passes(host, filter_properties))
def test_disk_filter_oversubscribe_fail(self):
self.flags(disk_allocation_ratio=10.0)
filt_cls = disk_filter.DiskFilter()
filter_properties = {'instance_type': {'root_gb': 100,
'ephemeral_gb': 19, 'swap': 1024}}
# 1GB used... so 119GB allowed...
host = fakes.FakeHostState('host1', 'node1',
{'free_disk_mb': 11 * 1024, 'total_usable_disk_gb': 12})
self.assertFalse(filt_cls.host_passes(host, filter_properties))
def test_disk_filter_fails(self):
self.flags(disk_allocation_ratio=1.0)
filt_cls = disk_filter.DiskFilter()
spec_obj = objects.RequestSpec(
flavor=objects.Flavor(root_gb=10, ephemeral_gb=1, swap=1024))
host = fakes.FakeHostState('host1', 'node1', {
'free_disk_mb': 11 * 1024,
'total_usable_disk_gb': 13
})
self.assertFalse(filt_cls.host_passes(host, spec_obj))
def test_disk_filter_oversubscribe_fail(self):
self.flags(disk_allocation_ratio=10.0)
filt_cls = disk_filter.DiskFilter()
spec_obj = objects.RequestSpec(
flavor=objects.Flavor(root_gb=100, ephemeral_gb=19, swap=1024))
# 1GB used... so 119GB allowed...
host = fakes.FakeHostState('host1', 'node1', {
'free_disk_mb': 11 * 1024,
'total_usable_disk_gb': 12
})
self.assertFalse(filt_cls.host_passes(host, spec_obj))
def test_disk_filter_passes(self):
filt_cls = disk_filter.DiskFilter()
spec_obj = objects.RequestSpec(
flavor=objects.Flavor(root_gb=1, ephemeral_gb=1, swap=512))
host = fakes.FakeHostState(
'host1', 'node1', {
'free_disk_mb': 11 * 1024,
'total_usable_disk_gb': 13,
'disk_allocation_ratio': 1.0
})
self.assertTrue(filt_cls.host_passes(host, spec_obj))
def test_disk_filter_oversubscribe(self):
filt_cls = disk_filter.DiskFilter()
spec_obj = objects.RequestSpec(
flavor=objects.Flavor(root_gb=100, ephemeral_gb=18, swap=1024))
# 1GB used... so 119GB allowed...
host = fakes.FakeHostState(
'host1', 'node1', {
'free_disk_mb': 11 * 1024,
'total_usable_disk_gb': 12,
'disk_allocation_ratio': 10.0
})
self.assertTrue(filt_cls.host_passes(host, spec_obj))
self.assertEqual(12 * 10.0, host.limits['disk_gb'])
def test_disk_filter_oversubscribe_single_instance_fails(self):
filt_cls = disk_filter.DiskFilter()
spec_obj = objects.RequestSpec(
flavor=objects.Flavor(root_gb=10, ephemeral_gb=2, swap=1024))
# According to the allocation ratio, This host has 119 Gb left,
# but it doesn't matter because the requested instance is
# bigger than the whole drive. Schedule will fail.
host = fakes.FakeHostState(
'host1', 'node1', {
'free_disk_mb': 11 * 1024,
'total_usable_disk_gb': 12,
'disk_allocation_ratio': 10.0
})
self.assertFalse(filt_cls.host_passes(host, spec_obj))
def test_disk_filter_oversubscribe(self):
filt_cls = disk_filter.DiskFilter()
spec_obj = objects.RequestSpec(
flavor=objects.Flavor(root_gb=3, ephemeral_gb=3, swap=1024))
# Only 1Gb left, but with 10x overprovision a 7Gb instance should
# still fit. Schedule will succeed.
host = fakes.FakeHostState(
'host1', 'node1', {
'free_disk_mb': 1 * 1024,
'total_usable_disk_gb': 12,
'disk_allocation_ratio': 10.0
})
self.assertTrue(filt_cls.host_passes(host, spec_obj))
self.assertEqual(12 * 10.0, host.limits['disk_gb'])
def setUp(self):
super(TestDiskFilter, self).setUp()
self.filt_cls = disk_filter.DiskFilter()
