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test_block_device.py
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test_block_device.py
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# Copyright 2011 Isaku Yamahata
# All Rights Reserved.
#
# 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.
"""
Tests for Block Device utility functions.
"""
from nova import block_device
from nova import exception
from nova import objects
from nova import test
from nova.tests.unit import fake_block_device
from nova.tests.unit import matchers
class BlockDeviceTestCase(test.NoDBTestCase):
def setUp(self):
super(BlockDeviceTestCase, self).setUp()
BDM = block_device.BlockDeviceDict
self.new_mapping = [
BDM({'id': 1, 'instance_uuid': 'fake-instance',
'device_name': '/dev/sdb1',
'source_type': 'blank',
'destination_type': 'local',
'delete_on_termination': True,
'volume_size': 1,
'guest_format': 'swap',
'boot_index': -1}),
BDM({'id': 2, 'instance_uuid': 'fake-instance',
'device_name': '/dev/sdc1',
'source_type': 'blank',
'destination_type': 'local',
'volume_size': 10,
'delete_on_termination': True,
'boot_index': -1}),
BDM({'id': 3, 'instance_uuid': 'fake-instance',
'device_name': '/dev/sda1',
'source_type': 'volume',
'destination_type': 'volume',
'volume_id': 'fake-volume-id-1',
'connection_info': "{'fake': 'connection_info'}",
'boot_index': 0}),
BDM({'id': 4, 'instance_uuid': 'fake-instance',
'device_name': '/dev/sda2',
'source_type': 'snapshot',
'destination_type': 'volume',
'connection_info': "{'fake': 'connection_info'}",
'snapshot_id': 'fake-snapshot-id-1',
'volume_id': 'fake-volume-id-2',
'boot_index': -1}),
BDM({'id': 5, 'instance_uuid': 'fake-instance',
'no_device': True,
'device_name': '/dev/vdc'}),
]
def test_properties(self):
root_device0 = '/dev/sda'
root_device1 = '/dev/sdb'
mappings = [{'virtual': 'root',
'device': root_device0}]
properties0 = {'mappings': mappings}
properties1 = {'mappings': mappings,
'root_device_name': root_device1}
self.assertIsNone(block_device.properties_root_device_name({}))
self.assertEqual(
block_device.properties_root_device_name(properties0),
root_device0)
self.assertEqual(
block_device.properties_root_device_name(properties1),
root_device1)
def test_ephemeral(self):
self.assertFalse(block_device.is_ephemeral('ephemeral'))
self.assertTrue(block_device.is_ephemeral('ephemeral0'))
self.assertTrue(block_device.is_ephemeral('ephemeral1'))
self.assertTrue(block_device.is_ephemeral('ephemeral11'))
self.assertFalse(block_device.is_ephemeral('root'))
self.assertFalse(block_device.is_ephemeral('swap'))
self.assertFalse(block_device.is_ephemeral('/dev/sda1'))
self.assertEqual(block_device.ephemeral_num('ephemeral0'), 0)
self.assertEqual(block_device.ephemeral_num('ephemeral1'), 1)
self.assertEqual(block_device.ephemeral_num('ephemeral11'), 11)
self.assertFalse(block_device.is_swap_or_ephemeral('ephemeral'))
self.assertTrue(block_device.is_swap_or_ephemeral('ephemeral0'))
self.assertTrue(block_device.is_swap_or_ephemeral('ephemeral1'))
self.assertTrue(block_device.is_swap_or_ephemeral('swap'))
self.assertFalse(block_device.is_swap_or_ephemeral('root'))
self.assertFalse(block_device.is_swap_or_ephemeral('/dev/sda1'))
def test_mappings_prepend_dev(self):
mapping = [
{'virtual': 'ami', 'device': '/dev/sda'},
{'virtual': 'root', 'device': 'sda'},
{'virtual': 'ephemeral0', 'device': 'sdb'},
{'virtual': 'swap', 'device': 'sdc'},
{'virtual': 'ephemeral1', 'device': 'sdd'},
{'virtual': 'ephemeral2', 'device': 'sde'}]
expected = [
{'virtual': 'ami', 'device': '/dev/sda'},
{'virtual': 'root', 'device': 'sda'},
{'virtual': 'ephemeral0', 'device': '/dev/sdb'},
{'virtual': 'swap', 'device': '/dev/sdc'},
{'virtual': 'ephemeral1', 'device': '/dev/sdd'},
{'virtual': 'ephemeral2', 'device': '/dev/sde'}]
prepended = block_device.mappings_prepend_dev(mapping)
self.assertEqual(prepended.sort(), expected.sort())
def test_strip_dev(self):
self.assertEqual(block_device.strip_dev('/dev/sda'), 'sda')
self.assertEqual(block_device.strip_dev('sda'), 'sda')
def test_strip_prefix(self):
self.assertEqual(block_device.strip_prefix('/dev/sda'), 'a')
self.assertEqual(block_device.strip_prefix('a'), 'a')
self.assertEqual(block_device.strip_prefix('xvda'), 'a')
self.assertEqual(block_device.strip_prefix('vda'), 'a')
self.assertEqual(block_device.strip_prefix('hda'), 'a')
def test_get_device_letter(self):
self.assertEqual(block_device.get_device_letter(''), '')
self.assertEqual(block_device.get_device_letter('/dev/sda1'), 'a')
self.assertEqual(block_device.get_device_letter('/dev/xvdb'), 'b')
self.assertEqual(block_device.get_device_letter('/dev/d'), 'd')
self.assertEqual(block_device.get_device_letter('a'), 'a')
self.assertEqual(block_device.get_device_letter('sdb2'), 'b')
self.assertEqual(block_device.get_device_letter('vdc'), 'c')
self.assertEqual(block_device.get_device_letter('hdc'), 'c')
def test_volume_in_mapping(self):
swap = {'device_name': '/dev/sdb',
'swap_size': 1}
ephemerals = [{'num': 0,
'virtual_name': 'ephemeral0',
'device_name': '/dev/sdc1',
'size': 1},
{'num': 2,
'virtual_name': 'ephemeral2',
'device_name': '/dev/sdd',
'size': 1}]
block_device_mapping = [{'mount_device': '/dev/sde',
'device_path': 'fake_device'},
{'mount_device': '/dev/sdf',
'device_path': 'fake_device'}]
block_device_info = {
'root_device_name': '/dev/sda',
'swap': swap,
'ephemerals': ephemerals,
'block_device_mapping': block_device_mapping}
def _assert_volume_in_mapping(device_name, true_or_false):
in_mapping = block_device.volume_in_mapping(
device_name, block_device_info)
self.assertEqual(in_mapping, true_or_false)
_assert_volume_in_mapping('sda', False)
_assert_volume_in_mapping('sdb', True)
_assert_volume_in_mapping('sdc1', True)
_assert_volume_in_mapping('sdd', True)
_assert_volume_in_mapping('sde', True)
_assert_volume_in_mapping('sdf', True)
_assert_volume_in_mapping('sdg', False)
_assert_volume_in_mapping('sdh1', False)
def test_get_root_bdm(self):
root_bdm = {'device_name': 'vda', 'boot_index': 0}
bdms = [root_bdm,
{'device_name': 'vdb', 'boot_index': 1},
{'device_name': 'vdc', 'boot_index': -1},
{'device_name': 'vdd'}]
self.assertEqual(root_bdm, block_device.get_root_bdm(bdms))
self.assertEqual(root_bdm, block_device.get_root_bdm([bdms[0]]))
self.assertIsNone(block_device.get_root_bdm(bdms[1:]))
self.assertIsNone(block_device.get_root_bdm(bdms[2:]))
self.assertIsNone(block_device.get_root_bdm(bdms[3:]))
self.assertIsNone(block_device.get_root_bdm([]))
def test_get_bdm_ephemeral_disk_size(self):
size = block_device.get_bdm_ephemeral_disk_size(self.new_mapping)
self.assertEqual(10, size)
def test_get_bdm_swap_list(self):
swap_list = block_device.get_bdm_swap_list(self.new_mapping)
self.assertEqual(1, len(swap_list))
self.assertEqual(1, swap_list[0].get('id'))
def test_get_bdm_local_disk_num(self):
size = block_device.get_bdm_local_disk_num(self.new_mapping)
self.assertEqual(2, size)
def test_new_format_is_swap(self):
expected_results = [True, False, False, False, False]
for expected, bdm in zip(expected_results, self.new_mapping):
res = block_device.new_format_is_swap(bdm)
self.assertEqual(expected, res)
def test_new_format_is_ephemeral(self):
expected_results = [False, True, False, False, False]
for expected, bdm in zip(expected_results, self.new_mapping):
res = block_device.new_format_is_ephemeral(bdm)
self.assertEqual(expected, res)
def test_validate_device_name(self):
for value in [' ', 10, None, 'a' * 260]:
self.assertRaises(exception.InvalidBDMFormat,
block_device.validate_device_name,
value)
def test_validate_and_default_volume_size(self):
bdm = {}
for value in [-1, 'a', 2.5]:
bdm['volume_size'] = value
self.assertRaises(exception.InvalidBDMFormat,
block_device.validate_and_default_volume_size,
bdm)
def test_get_bdms_to_connect(self):
root_bdm = {'device_name': 'vda', 'boot_index': 0}
bdms = [root_bdm,
{'device_name': 'vdb', 'boot_index': 1},
{'device_name': 'vdc', 'boot_index': -1},
{'device_name': 'vde', 'boot_index': None},
{'device_name': 'vdd'}]
self.assertNotIn(root_bdm, block_device.get_bdms_to_connect(bdms,
exclude_root_mapping=True))
self.assertIn(root_bdm, block_device.get_bdms_to_connect(bdms))
class TestBlockDeviceDict(test.NoDBTestCase):
def setUp(self):
super(TestBlockDeviceDict, self).setUp()
BDM = block_device.BlockDeviceDict
self.api_mapping = [
{'id': 1, 'instance_uuid': 'fake-instance',
'device_name': '/dev/sdb1',
'source_type': 'blank',
'destination_type': 'local',
'delete_on_termination': True,
'guest_format': 'swap',
'boot_index': -1},
{'id': 2, 'instance_uuid': 'fake-instance',
'device_name': '/dev/sdc1',
'source_type': 'blank',
'destination_type': 'local',
'delete_on_termination': True,
'boot_index': -1},
{'id': 3, 'instance_uuid': 'fake-instance',
'device_name': '/dev/sda1',
'source_type': 'volume',
'destination_type': 'volume',
'uuid': 'fake-volume-id-1',
'boot_index': 0},
{'id': 4, 'instance_uuid': 'fake-instance',
'device_name': '/dev/sda2',
'source_type': 'snapshot',
'destination_type': 'volume',
'uuid': 'fake-snapshot-id-1',
'boot_index': -1},
{'id': 5, 'instance_uuid': 'fake-instance',
'no_device': True,
'device_name': '/dev/vdc'},
]
self.new_mapping = [
BDM({'id': 1, 'instance_uuid': 'fake-instance',
'device_name': '/dev/sdb1',
'source_type': 'blank',
'destination_type': 'local',
'delete_on_termination': True,
'guest_format': 'swap',
'boot_index': -1}),
BDM({'id': 2, 'instance_uuid': 'fake-instance',
'device_name': '/dev/sdc1',
'source_type': 'blank',
'destination_type': 'local',
'delete_on_termination': True,
'boot_index': -1}),
BDM({'id': 3, 'instance_uuid': 'fake-instance',
'device_name': '/dev/sda1',
'source_type': 'volume',
'destination_type': 'volume',
'volume_id': 'fake-volume-id-1',
'connection_info': "{'fake': 'connection_info'}",
'boot_index': 0}),
BDM({'id': 4, 'instance_uuid': 'fake-instance',
'device_name': '/dev/sda2',
'source_type': 'snapshot',
'destination_type': 'volume',
'connection_info': "{'fake': 'connection_info'}",
'snapshot_id': 'fake-snapshot-id-1',
'volume_id': 'fake-volume-id-2',
'boot_index': -1}),
BDM({'id': 5, 'instance_uuid': 'fake-instance',
'no_device': True,
'device_name': '/dev/vdc'}),
]
self.legacy_mapping = [
{'id': 1, 'instance_uuid': 'fake-instance',
'device_name': '/dev/sdb1',
'delete_on_termination': True,
'virtual_name': 'swap'},
{'id': 2, 'instance_uuid': 'fake-instance',
'device_name': '/dev/sdc1',
'delete_on_termination': True,
'virtual_name': 'ephemeral0'},
{'id': 3, 'instance_uuid': 'fake-instance',
'device_name': '/dev/sda1',
'volume_id': 'fake-volume-id-1',
'connection_info': "{'fake': 'connection_info'}"},
{'id': 4, 'instance_uuid': 'fake-instance',
'device_name': '/dev/sda2',
'connection_info': "{'fake': 'connection_info'}",
'snapshot_id': 'fake-snapshot-id-1',
'volume_id': 'fake-volume-id-2'},
{'id': 5, 'instance_uuid': 'fake-instance',
'no_device': True,
'device_name': '/dev/vdc'},
]
self.new_mapping_source_image = [
BDM({'id': 6, 'instance_uuid': 'fake-instance',
'device_name': '/dev/sda3',
'source_type': 'image',
'destination_type': 'volume',
'connection_info': "{'fake': 'connection_info'}",
'volume_id': 'fake-volume-id-3',
'boot_index': -1}),
BDM({'id': 7, 'instance_uuid': 'fake-instance',
'device_name': '/dev/sda4',
'source_type': 'image',
'destination_type': 'local',
'connection_info': "{'fake': 'connection_info'}",
'image_id': 'fake-image-id-2',
'boot_index': -1}),
]
self.legacy_mapping_source_image = [
{'id': 6, 'instance_uuid': 'fake-instance',
'device_name': '/dev/sda3',
'connection_info': "{'fake': 'connection_info'}",
'volume_id': 'fake-volume-id-3'},
]
def test_init(self):
def fake_validate(obj, dct):
pass
self.stubs.Set(block_device.BlockDeviceDict, '_fields',
set(['field1', 'field2']))
self.stubs.Set(block_device.BlockDeviceDict, '_db_only_fields',
set(['db_field1', 'db_field2']))
self.stubs.Set(block_device.BlockDeviceDict, '_validate',
fake_validate)
# Make sure db fields are not picked up if they are not
# in the original dict
dev_dict = block_device.BlockDeviceDict({'field1': 'foo',
'field2': 'bar',
'db_field1': 'baz'})
self.assertIn('field1', dev_dict)
self.assertIn('field2', dev_dict)
self.assertIn('db_field1', dev_dict)
self.assertNotIn('db_field2', dev_dict)
# Make sure all expected fields are defaulted
dev_dict = block_device.BlockDeviceDict({'field1': 'foo'})
self.assertIn('field1', dev_dict)
self.assertIn('field2', dev_dict)
self.assertIsNone(dev_dict['field2'])
self.assertNotIn('db_field1', dev_dict)
self.assertNotIn('db_field2', dev_dict)
# Unless they are not meant to be
dev_dict = block_device.BlockDeviceDict({'field1': 'foo'},
do_not_default=set(['field2']))
self.assertIn('field1', dev_dict)
self.assertNotIn('field2', dev_dict)
self.assertNotIn('db_field1', dev_dict)
self.assertNotIn('db_field2', dev_dict)
# Passing kwargs to constructor works
dev_dict = block_device.BlockDeviceDict(field1='foo')
self.assertIn('field1', dev_dict)
self.assertIn('field2', dev_dict)
self.assertIsNone(dev_dict['field2'])
dev_dict = block_device.BlockDeviceDict(
{'field1': 'foo'}, field2='bar')
self.assertEqual('foo', dev_dict['field1'])
self.assertEqual('bar', dev_dict['field2'])
def test_init_prepend_dev_to_device_name(self):
bdm = {'id': 3, 'instance_uuid': 'fake-instance',
'device_name': 'vda',
'source_type': 'volume',
'destination_type': 'volume',
'volume_id': 'fake-volume-id-1',
'boot_index': 0}
bdm_dict = block_device.BlockDeviceDict(bdm)
self.assertEqual('/dev/vda', bdm_dict['device_name'])
bdm['device_name'] = '/dev/vdb'
bdm_dict = block_device.BlockDeviceDict(bdm)
self.assertEqual('/dev/vdb', bdm_dict['device_name'])
bdm['device_name'] = None
bdm_dict = block_device.BlockDeviceDict(bdm)
self.assertIsNone(bdm_dict['device_name'])
def test_init_boolify_delete_on_termination(self):
# Make sure that when delete_on_termination is not passed it's
# still set to False and not None
bdm = {'id': 3, 'instance_uuid': 'fake-instance',
'device_name': 'vda',
'source_type': 'volume',
'destination_type': 'volume',
'volume_id': 'fake-volume-id-1',
'boot_index': 0}
bdm_dict = block_device.BlockDeviceDict(bdm)
self.assertEqual(False, bdm_dict['delete_on_termination'])
def test_validate(self):
self.assertRaises(exception.InvalidBDMFormat,
block_device.BlockDeviceDict,
{'bogus_field': 'lame_val'})
lame_bdm = dict(self.new_mapping[2])
del lame_bdm['source_type']
self.assertRaises(exception.InvalidBDMFormat,
block_device.BlockDeviceDict,
lame_bdm)
lame_bdm['no_device'] = True
block_device.BlockDeviceDict(lame_bdm)
lame_dev_bdm = dict(self.new_mapping[2])
lame_dev_bdm['device_name'] = "not a valid name"
self.assertRaises(exception.InvalidBDMFormat,
block_device.BlockDeviceDict,
lame_dev_bdm)
lame_dev_bdm['device_name'] = ""
self.assertRaises(exception.InvalidBDMFormat,
block_device.BlockDeviceDict,
lame_dev_bdm)
cool_volume_size_bdm = dict(self.new_mapping[2])
cool_volume_size_bdm['volume_size'] = '42'
cool_volume_size_bdm = block_device.BlockDeviceDict(
cool_volume_size_bdm)
self.assertEqual(cool_volume_size_bdm['volume_size'], 42)
lame_volume_size_bdm = dict(self.new_mapping[2])
lame_volume_size_bdm['volume_size'] = 'some_non_int_string'
self.assertRaises(exception.InvalidBDMFormat,
block_device.BlockDeviceDict,
lame_volume_size_bdm)
truthy_bdm = dict(self.new_mapping[2])
truthy_bdm['delete_on_termination'] = '1'
truthy_bdm = block_device.BlockDeviceDict(truthy_bdm)
self.assertEqual(truthy_bdm['delete_on_termination'], True)
verbose_bdm = dict(self.new_mapping[2])
verbose_bdm['boot_index'] = 'first'
self.assertRaises(exception.InvalidBDMFormat,
block_device.BlockDeviceDict,
verbose_bdm)
def test_from_legacy(self):
for legacy, new in zip(self.legacy_mapping, self.new_mapping):
self.assertThat(
block_device.BlockDeviceDict.from_legacy(legacy),
matchers.IsSubDictOf(new))
def test_from_legacy_mapping(self):
def _get_image_bdms(bdms):
return [bdm for bdm in bdms if bdm['source_type'] == 'image']
def _get_bootable_bdms(bdms):
return [bdm for bdm in bdms if bdm['boot_index'] >= 0]
new_no_img = block_device.from_legacy_mapping(self.legacy_mapping)
self.assertEqual(len(_get_image_bdms(new_no_img)), 0)
for new, expected in zip(new_no_img, self.new_mapping):
self.assertThat(new, matchers.IsSubDictOf(expected))
new_with_img = block_device.from_legacy_mapping(
self.legacy_mapping, 'fake_image_ref')
image_bdms = _get_image_bdms(new_with_img)
boot_bdms = _get_bootable_bdms(new_with_img)
self.assertEqual(len(image_bdms), 1)
self.assertEqual(len(boot_bdms), 1)
self.assertEqual(image_bdms[0]['boot_index'], 0)
self.assertEqual(boot_bdms[0]['source_type'], 'image')
new_with_img_and_root = block_device.from_legacy_mapping(
self.legacy_mapping, 'fake_image_ref', 'sda1')
image_bdms = _get_image_bdms(new_with_img_and_root)
boot_bdms = _get_bootable_bdms(new_with_img_and_root)
self.assertEqual(len(image_bdms), 0)
self.assertEqual(len(boot_bdms), 1)
self.assertEqual(boot_bdms[0]['boot_index'], 0)
self.assertEqual(boot_bdms[0]['source_type'], 'volume')
new_no_root = block_device.from_legacy_mapping(
self.legacy_mapping, 'fake_image_ref', 'sda1', no_root=True)
self.assertEqual(len(_get_image_bdms(new_no_root)), 0)
self.assertEqual(len(_get_bootable_bdms(new_no_root)), 0)
def test_from_api(self):
for api, new in zip(self.api_mapping, self.new_mapping):
new['connection_info'] = None
if new['snapshot_id']:
new['volume_id'] = None
self.assertThat(
block_device.BlockDeviceDict.from_api(api, False),
matchers.IsSubDictOf(new))
def test_from_api_invalid_blank_id(self):
api_dict = {'id': 1,
'source_type': 'blank',
'destination_type': 'volume',
'uuid': 'fake-volume-id-1',
'delete_on_termination': True,
'boot_index': -1}
self.assertRaises(exception.InvalidBDMFormat,
block_device.BlockDeviceDict.from_api, api_dict,
False)
def test_from_api_invalid_source_to_local_mapping(self):
api_dict = {'id': 1,
'source_type': 'image',
'destination_type': 'local',
'uuid': 'fake-volume-id-1'}
self.assertRaises(exception.InvalidBDMFormat,
block_device.BlockDeviceDict.from_api, api_dict,
False)
def test_from_api_valid_source_to_local_mapping(self):
api_dict = {'id': 1,
'source_type': 'image',
'destination_type': 'local',
'volume_id': 'fake-volume-id-1',
'uuid': 1,
'boot_index': 0}
retexp = block_device.BlockDeviceDict(
{'id': 1,
'source_type': 'image',
'image_id': 1,
'destination_type': 'local',
'volume_id': 'fake-volume-id-1',
'boot_index': 0})
self.assertEqual(
block_device.BlockDeviceDict.from_api(api_dict, True),
retexp)
def test_from_api_invalid_source_to_local_mapping_with_string_bi(self):
api_dict = {'id': 1,
'source_type': 'image',
'destination_type': 'local',
'uuid': 'fake-volume-id-1',
'boot_index': 'aaaa0'}
self.assertRaises(exception.InvalidBDMFormat,
block_device.BlockDeviceDict.from_api, api_dict,
False)
def test_from_api_valid_source_to_local_mapping_with_string_bi(self):
api_dict = {'id': 1,
'source_type': 'image',
'destination_type': 'local',
'volume_id': 'fake-volume-id-1',
'uuid': 1,
'boot_index': '0'}
retexp = block_device.BlockDeviceDict(
{'id': 1,
'source_type': 'image',
'image_id': 1,
'destination_type': 'local',
'volume_id': 'fake-volume-id-1',
'boot_index': 0})
self.assertEqual(retexp,
block_device.BlockDeviceDict.from_api(api_dict, True))
def test_legacy(self):
for legacy, new in zip(self.legacy_mapping, self.new_mapping):
self.assertThat(
legacy,
matchers.IsSubDictOf(new.legacy()))
def test_legacy_mapping(self):
got_legacy = block_device.legacy_mapping(self.new_mapping)
for legacy, expected in zip(got_legacy, self.legacy_mapping):
self.assertThat(expected, matchers.IsSubDictOf(legacy))
def test_legacy_source_image(self):
for legacy, new in zip(self.legacy_mapping_source_image,
self.new_mapping_source_image):
if new['destination_type'] == 'volume':
self.assertThat(legacy, matchers.IsSubDictOf(new.legacy()))
else:
self.assertRaises(exception.InvalidBDMForLegacy, new.legacy)
def test_legacy_mapping_source_image(self):
got_legacy = block_device.legacy_mapping(self.new_mapping)
for legacy, expected in zip(got_legacy, self.legacy_mapping):
self.assertThat(expected, matchers.IsSubDictOf(legacy))
def test_legacy_mapping_from_object_list(self):
bdm1 = objects.BlockDeviceMapping()
bdm1 = objects.BlockDeviceMapping._from_db_object(
None, bdm1, fake_block_device.FakeDbBlockDeviceDict(
self.new_mapping[0]))
bdm2 = objects.BlockDeviceMapping()
bdm2 = objects.BlockDeviceMapping._from_db_object(
None, bdm2, fake_block_device.FakeDbBlockDeviceDict(
self.new_mapping[1]))
bdmlist = objects.BlockDeviceMappingList()
bdmlist.objects = [bdm1, bdm2]
block_device.legacy_mapping(bdmlist)
def test_image_mapping(self):
removed_fields = ['id', 'instance_uuid', 'connection_info',
'created_at', 'updated_at', 'deleted_at', 'deleted']
for bdm in self.new_mapping:
mapping_bdm = fake_block_device.FakeDbBlockDeviceDict(
bdm).get_image_mapping()
for fld in removed_fields:
self.assertNotIn(fld, mapping_bdm)
def _test_snapshot_from_bdm(self, template):
snapshot = block_device.snapshot_from_bdm('new-snapshot-id', template)
self.assertEqual(snapshot['snapshot_id'], 'new-snapshot-id')
self.assertEqual(snapshot['source_type'], 'snapshot')
self.assertEqual(snapshot['destination_type'], 'volume')
self.assertEqual(template.volume_size, snapshot['volume_size'])
self.assertEqual(template.delete_on_termination,
snapshot['delete_on_termination'])
self.assertEqual(template.device_name, snapshot['device_name'])
for key in ['disk_bus', 'device_type', 'boot_index']:
self.assertEqual(snapshot[key], template[key])
def test_snapshot_from_bdm(self):
for bdm in self.new_mapping:
self._test_snapshot_from_bdm(objects.BlockDeviceMapping(**bdm))
def test_snapshot_from_object(self):
for bdm in self.new_mapping[:-1]:
obj = objects.BlockDeviceMapping()
obj = objects.BlockDeviceMapping._from_db_object(
None, obj, fake_block_device.FakeDbBlockDeviceDict(
bdm))
self._test_snapshot_from_bdm(obj)