407 lines
17 KiB
Python
407 lines
17 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 Isaku Yamahata
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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 Block Device utility functions.
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"""
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from nova import block_device
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from nova import exception
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from nova import test
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from nova.tests import matchers
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class BlockDeviceTestCase(test.NoDBTestCase):
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def test_properties(self):
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root_device0 = '/dev/sda'
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root_device1 = '/dev/sdb'
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mappings = [{'virtual': 'root',
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'device': root_device0}]
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properties0 = {'mappings': mappings}
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properties1 = {'mappings': mappings,
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'root_device_name': root_device1}
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self.assertEqual(block_device.properties_root_device_name({}), None)
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self.assertEqual(
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block_device.properties_root_device_name(properties0),
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root_device0)
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self.assertEqual(
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block_device.properties_root_device_name(properties1),
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root_device1)
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def test_ephemeral(self):
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self.assertFalse(block_device.is_ephemeral('ephemeral'))
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self.assertTrue(block_device.is_ephemeral('ephemeral0'))
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self.assertTrue(block_device.is_ephemeral('ephemeral1'))
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self.assertTrue(block_device.is_ephemeral('ephemeral11'))
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self.assertFalse(block_device.is_ephemeral('root'))
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self.assertFalse(block_device.is_ephemeral('swap'))
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self.assertFalse(block_device.is_ephemeral('/dev/sda1'))
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self.assertEqual(block_device.ephemeral_num('ephemeral0'), 0)
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self.assertEqual(block_device.ephemeral_num('ephemeral1'), 1)
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self.assertEqual(block_device.ephemeral_num('ephemeral11'), 11)
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self.assertFalse(block_device.is_swap_or_ephemeral('ephemeral'))
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self.assertTrue(block_device.is_swap_or_ephemeral('ephemeral0'))
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self.assertTrue(block_device.is_swap_or_ephemeral('ephemeral1'))
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self.assertTrue(block_device.is_swap_or_ephemeral('swap'))
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self.assertFalse(block_device.is_swap_or_ephemeral('root'))
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self.assertFalse(block_device.is_swap_or_ephemeral('/dev/sda1'))
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def test_mappings_prepend_dev(self):
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mapping = [
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{'virtual': 'ami', 'device': '/dev/sda'},
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{'virtual': 'root', 'device': 'sda'},
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{'virtual': 'ephemeral0', 'device': 'sdb'},
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{'virtual': 'swap', 'device': 'sdc'},
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{'virtual': 'ephemeral1', 'device': 'sdd'},
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{'virtual': 'ephemeral2', 'device': 'sde'}]
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expected = [
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{'virtual': 'ami', 'device': '/dev/sda'},
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{'virtual': 'root', 'device': 'sda'},
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{'virtual': 'ephemeral0', 'device': '/dev/sdb'},
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{'virtual': 'swap', 'device': '/dev/sdc'},
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{'virtual': 'ephemeral1', 'device': '/dev/sdd'},
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{'virtual': 'ephemeral2', 'device': '/dev/sde'}]
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prepended = block_device.mappings_prepend_dev(mapping)
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self.assertEqual(prepended.sort(), expected.sort())
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def test_strip_dev(self):
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self.assertEqual(block_device.strip_dev('/dev/sda'), 'sda')
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self.assertEqual(block_device.strip_dev('sda'), 'sda')
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def test_strip_prefix(self):
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self.assertEqual(block_device.strip_prefix('/dev/sda'), 'a')
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self.assertEqual(block_device.strip_prefix('a'), 'a')
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self.assertEqual(block_device.strip_prefix('xvda'), 'a')
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self.assertEqual(block_device.strip_prefix('vda'), 'a')
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def test_volume_in_mapping(self):
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swap = {'device_name': '/dev/sdb',
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'swap_size': 1}
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ephemerals = [{'num': 0,
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'virtual_name': 'ephemeral0',
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'device_name': '/dev/sdc1',
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'size': 1},
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{'num': 2,
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'virtual_name': 'ephemeral2',
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'device_name': '/dev/sdd',
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'size': 1}]
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block_device_mapping = [{'mount_device': '/dev/sde',
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'device_path': 'fake_device'},
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{'mount_device': '/dev/sdf',
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'device_path': 'fake_device'}]
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block_device_info = {
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'root_device_name': '/dev/sda',
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'swap': swap,
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'ephemerals': ephemerals,
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'block_device_mapping': block_device_mapping}
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def _assert_volume_in_mapping(device_name, true_or_false):
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in_mapping = block_device.volume_in_mapping(
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device_name, block_device_info)
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self.assertEquals(in_mapping, true_or_false)
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_assert_volume_in_mapping('sda', False)
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_assert_volume_in_mapping('sdb', True)
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_assert_volume_in_mapping('sdc1', True)
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_assert_volume_in_mapping('sdd', True)
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_assert_volume_in_mapping('sde', True)
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_assert_volume_in_mapping('sdf', True)
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_assert_volume_in_mapping('sdg', False)
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_assert_volume_in_mapping('sdh1', False)
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class TestBlockDeviceDict(test.NoDBTestCase):
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def setUp(self):
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super(TestBlockDeviceDict, self).setUp()
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BDM = block_device.BlockDeviceDict
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self.api_mapping = [
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{'id': 1, 'instance_uuid': 'fake-instance',
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'device_name': '/dev/sdb1',
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'source_type': 'blank',
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'destination_type': 'local',
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'delete_on_termination': True,
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'guest_format': 'swap',
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'boot_index': -1},
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{'id': 2, 'instance_uuid': 'fake-instance',
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'device_name': '/dev/sdc1',
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'source_type': 'blank',
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'destination_type': 'local',
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'delete_on_termination': True,
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'boot_index': -1},
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{'id': 3, 'instance_uuid': 'fake-instance',
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'device_name': '/dev/sda1',
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'source_type': 'volume',
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'destination_type': 'volume',
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'uuid': 'fake-volume-id-1',
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'boot_index': 0},
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{'id': 4, 'instance_uuid': 'fake-instance',
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'device_name': '/dev/sda2',
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'source_type': 'snapshot',
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'destination_type': 'volume',
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'uuid': 'fake-snapshot-id-1',
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'boot_index': -1},
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{'id': 5, 'instance_uuid': 'fake-instance',
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'no_device': True,
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'device_name': '/dev/vdc'},
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]
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self.new_mapping = [
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BDM({'id': 1, 'instance_uuid': 'fake-instance',
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'device_name': '/dev/sdb1',
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'source_type': 'blank',
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'destination_type': 'local',
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'delete_on_termination': True,
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'guest_format': 'swap',
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'boot_index': -1}),
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BDM({'id': 2, 'instance_uuid': 'fake-instance',
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'device_name': '/dev/sdc1',
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'source_type': 'blank',
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'destination_type': 'local',
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'delete_on_termination': True,
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'boot_index': -1}),
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BDM({'id': 3, 'instance_uuid': 'fake-instance',
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'device_name': '/dev/sda1',
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'source_type': 'volume',
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'destination_type': 'volume',
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'volume_id': 'fake-volume-id-1',
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'connection_info': "{'fake': 'connection_info'}",
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'boot_index': 0}),
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BDM({'id': 4, 'instance_uuid': 'fake-instance',
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'device_name': '/dev/sda2',
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'source_type': 'snapshot',
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'destination_type': 'volume',
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'connection_info': "{'fake': 'connection_info'}",
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'snapshot_id': 'fake-snapshot-id-1',
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'volume_id': 'fake-volume-id-2',
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'boot_index': -1}),
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BDM({'id': 5, 'instance_uuid': 'fake-instance',
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'no_device': True,
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'device_name': '/dev/vdc'}),
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]
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self.legacy_mapping = [
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{'id': 1, 'instance_uuid': 'fake-instance',
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'device_name': '/dev/sdb1',
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'delete_on_termination': True,
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'virtual_name': 'swap'},
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{'id': 2, 'instance_uuid': 'fake-instance',
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'device_name': '/dev/sdc1',
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'delete_on_termination': True,
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'virtual_name': 'ephemeral0'},
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{'id': 3, 'instance_uuid': 'fake-instance',
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'device_name': '/dev/sda1',
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'volume_id': 'fake-volume-id-1',
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'connection_info': "{'fake': 'connection_info'}"},
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{'id': 4, 'instance_uuid': 'fake-instance',
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'device_name': '/dev/sda2',
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'connection_info': "{'fake': 'connection_info'}",
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'snapshot_id': 'fake-snapshot-id-1',
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'volume_id': 'fake-volume-id-2'},
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{'id': 5, 'instance_uuid': 'fake-instance',
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'no_device': True,
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'device_name': '/dev/vdc'},
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]
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self.new_mapping_source_image = [
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BDM({'id': 6, 'instance_uuid': 'fake-instance',
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'device_name': '/dev/sda3',
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'source_type': 'image',
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'destination_type': 'volume',
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'connection_info': "{'fake': 'connection_info'}",
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'volume_id': 'fake-volume-id-3',
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'boot_index': -1}),
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BDM({'id': 7, 'instance_uuid': 'fake-instance',
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'device_name': '/dev/sda4',
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'source_type': 'image',
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'destination_type': 'local',
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'connection_info': "{'fake': 'connection_info'}",
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'image_id': 'fake-image-id-2',
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'boot_index': -1}),
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]
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self.legacy_mapping_source_image = [
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{'id': 6, 'instance_uuid': 'fake-instance',
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'device_name': '/dev/sda3',
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'connection_info': "{'fake': 'connection_info'}",
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'volume_id': 'fake-volume-id-3'},
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]
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def test_init(self):
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def fake_validate(obj, dct):
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pass
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self.stubs.Set(block_device.BlockDeviceDict, '_fields',
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set(['field1', 'field2']))
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self.stubs.Set(block_device.BlockDeviceDict, '_db_only_fields',
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set(['db_field1', 'db_field2']))
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self.stubs.Set(block_device.BlockDeviceDict, '_validate',
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fake_validate)
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# Make sure db fields are not picked up if they are not
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# in the original dict
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dev_dict = block_device.BlockDeviceDict({'field1': 'foo',
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'field2': 'bar',
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'db_field1': 'baz'})
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self.assertTrue('field1' in dev_dict)
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self.assertTrue('field2' in dev_dict)
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self.assertTrue('db_field1' in dev_dict)
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self.assertFalse('db_field2'in dev_dict)
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# Make sure all expected fields are defaulted
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dev_dict = block_device.BlockDeviceDict({'field1': 'foo'})
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self.assertTrue('field1' in dev_dict)
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self.assertTrue('field2' in dev_dict)
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self.assertTrue(dev_dict['field2'] is None)
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self.assertFalse('db_field1' in dev_dict)
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self.assertFalse('db_field2'in dev_dict)
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# Unless they are not meant to be
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dev_dict = block_device.BlockDeviceDict({'field1': 'foo'},
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do_not_default=set(['field2']))
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self.assertTrue('field1' in dev_dict)
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self.assertFalse('field2' in dev_dict)
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self.assertFalse('db_field1' in dev_dict)
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self.assertFalse('db_field2'in dev_dict)
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def test_validate(self):
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self.assertRaises(exception.InvalidBDMFormat,
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block_device.BlockDeviceDict,
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{'bogus_field': 'lame_val'})
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lame_bdm = dict(self.new_mapping[2])
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del lame_bdm['source_type']
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self.assertRaises(exception.InvalidBDMFormat,
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block_device.BlockDeviceDict,
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lame_bdm)
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lame_bdm['no_device'] = True
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block_device.BlockDeviceDict(lame_bdm)
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lame_dev_bdm = dict(self.new_mapping[2])
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lame_dev_bdm['device_name'] = "not a valid name"
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self.assertRaises(exception.InvalidBDMFormat,
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block_device.BlockDeviceDict,
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lame_dev_bdm)
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lame_dev_bdm['device_name'] = ""
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self.assertRaises(exception.InvalidBDMFormat,
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block_device.BlockDeviceDict,
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lame_dev_bdm)
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cool_volume_size_bdm = dict(self.new_mapping[2])
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cool_volume_size_bdm['volume_size'] = '42'
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cool_volume_size_bdm = block_device.BlockDeviceDict(
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cool_volume_size_bdm)
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self.assertEquals(cool_volume_size_bdm['volume_size'], 42)
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lame_volume_size_bdm = dict(self.new_mapping[2])
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lame_volume_size_bdm['volume_size'] = 'some_non_int_string'
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self.assertRaises(exception.InvalidBDMFormat,
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block_device.BlockDeviceDict,
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lame_volume_size_bdm)
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truthy_bdm = dict(self.new_mapping[2])
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truthy_bdm['delete_on_termination'] = '1'
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truthy_bdm = block_device.BlockDeviceDict(truthy_bdm)
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self.assertEquals(truthy_bdm['delete_on_termination'], True)
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verbose_bdm = dict(self.new_mapping[2])
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verbose_bdm['boot_index'] = 'first'
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self.assertRaises(exception.InvalidBDMFormat,
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block_device.BlockDeviceDict,
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verbose_bdm)
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def test_from_legacy(self):
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for legacy, new in zip(self.legacy_mapping, self.new_mapping):
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self.assertThat(
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block_device.BlockDeviceDict.from_legacy(legacy),
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matchers.IsSubDictOf(new))
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def test_from_legacy_mapping(self):
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def _get_image_bdms(bdms):
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return [bdm for bdm in bdms if bdm['source_type'] == 'image']
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def _get_bootable_bdms(bdms):
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return [bdm for bdm in bdms if bdm['boot_index'] >= 0]
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new_no_img = block_device.from_legacy_mapping(self.legacy_mapping)
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self.assertEquals(len(_get_image_bdms(new_no_img)), 0)
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for new, expected in zip(new_no_img, self.new_mapping):
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self.assertThat(new, matchers.IsSubDictOf(expected))
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new_with_img = block_device.from_legacy_mapping(
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self.legacy_mapping, 'fake_image_ref')
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image_bdms = _get_image_bdms(new_with_img)
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boot_bdms = _get_bootable_bdms(new_with_img)
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self.assertEquals(len(image_bdms), 1)
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self.assertEquals(len(boot_bdms), 1)
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self.assertEquals(image_bdms[0]['boot_index'], 0)
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self.assertEquals(boot_bdms[0]['source_type'], 'image')
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new_with_img_and_root = block_device.from_legacy_mapping(
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self.legacy_mapping, 'fake_image_ref', 'sda1')
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image_bdms = _get_image_bdms(new_with_img_and_root)
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boot_bdms = _get_bootable_bdms(new_with_img_and_root)
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self.assertEquals(len(image_bdms), 0)
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self.assertEquals(len(boot_bdms), 1)
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self.assertEquals(boot_bdms[0]['boot_index'], 0)
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self.assertEquals(boot_bdms[0]['source_type'], 'volume')
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def test_from_api(self):
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for api, new in zip(self.api_mapping, self.new_mapping):
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new['connection_info'] = None
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if new['snapshot_id']:
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new['volume_id'] = None
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self.assertThat(
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block_device.BlockDeviceDict.from_api(api),
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matchers.IsSubDictOf(new))
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def test_legacy(self):
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for legacy, new in zip(self.legacy_mapping, self.new_mapping):
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self.assertThat(
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legacy,
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matchers.IsSubDictOf(new.legacy()))
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def test_legacy_mapping(self):
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got_legacy = block_device.legacy_mapping(self.new_mapping)
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for legacy, expected in zip(got_legacy, self.legacy_mapping):
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self.assertThat(expected, matchers.IsSubDictOf(legacy))
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def test_legacy_source_image(self):
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for legacy, new in zip(self.legacy_mapping_source_image,
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self.new_mapping_source_image):
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if new['destination_type'] == 'volume':
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self.assertThat(legacy, matchers.IsSubDictOf(new.legacy()))
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else:
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self.assertRaises(exception.InvalidBDMForLegacy, new.legacy)
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def test_legacy_mapping_source_image(self):
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got_legacy = block_device.legacy_mapping(self.new_mapping)
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for legacy, expected in zip(got_legacy, self.legacy_mapping):
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self.assertThat(expected, matchers.IsSubDictOf(legacy))
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