Merge "fup: Remove unused legacy block_device_info format"
This commit is contained in:
Zuul
Gerrit Code Review
commit
fded762f4d
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@ -59,6 +59,10 @@ or volumes, and some associated data.
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``block_device_info``
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---------------------
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.. versionchanged:: 24.0.0 (Xena)
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The legacy block_device_info format is no longer supported.
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Drivers do not directly use BDM objects. Instead, they are transformed into a
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different driver-specific representation. This representation is normally
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called ``block_device_info``, and is generated by
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@ -74,24 +78,23 @@ called ``block_device_info``, and is generated by
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``swap``
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A swap disk, or None if there is no swap disk
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The disks are represented in one of two ways, depending on the specific
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driver currently in use. There's the 'new' representation, used by the libvirt
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and vmwareAPI drivers, and the 'legacy' representation used by all other
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drivers. The legacy representation is a plain dict. It does not contain the
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same information as the new representation.
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.. note::
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The new representation involves subclasses of
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``nova.block_device.DriverBlockDevice``. As well as containing different
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fields, the new representation significantly also retains a reference to the
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underlying BDM object. This means that by manipulating the
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``DriverBlockDevice`` object, the driver is able to persist data to the BDM
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object in the DB.
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The disks were previously represented in one of two ways, depending on the
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specific driver in use. A legacy plain dict format or the currently used
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DriverBlockDevice format discussed below. Support for the legacy format
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was removed in Xena.
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Disks are represented by subclasses of ``nova.block_device.DriverBlockDevice``.
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These subclasses retain a reference to the underlying BDM object. This means
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that by manipulating the ``DriverBlockDevice`` object, the driver is able to
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persist data to the BDM object in the DB.
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.. note::
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Common usage is to pull ``block_device_mapping`` out of this
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dict into a variable called ``block_device_mapping``. This is not a
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``BlockDeviceMapping`` object, or list of them.
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``BlockDeviceMapping`` object, or a list of them.
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.. note::
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@ -311,30 +311,6 @@ def snapshot_from_bdm(snapshot_id, template):
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return BlockDeviceDict(snapshot_dict)
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def legacy_mapping(block_device_mapping):
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"""Transform a list of block devices of an instance back to the
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legacy data format.
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"""
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legacy_block_device_mapping = []
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for bdm in block_device_mapping:
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try:
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legacy_block_device = BlockDeviceDict(bdm).legacy()
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except exception.InvalidBDMForLegacy:
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continue
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legacy_block_device_mapping.append(legacy_block_device)
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# Re-enumerate the ephemeral devices
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for i, dev in enumerate(dev for dev in legacy_block_device_mapping
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if dev['virtual_name'] and
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is_ephemeral(dev['virtual_name'])):
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dev['virtual_name'] = dev['virtual_name'][:-1] + str(i)
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return legacy_block_device_mapping
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def from_legacy_mapping(legacy_block_device_mapping, image_uuid='',
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root_device_name=None, no_root=False):
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"""Transform a legacy list of block devices to the new data format."""
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@ -578,8 +578,6 @@ class ComputeManager(manager.Manager):
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# compute manager via the virtapi, so we want it to be fully
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# initialized before that happens.
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self.driver = driver.load_compute_driver(self.virtapi, compute_driver)
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self.use_legacy_block_device_info = \
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self.driver.need_legacy_block_device_info
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self.rt = resource_tracker.ResourceTracker(
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self.host, self.driver, reportclient=self.reportclient)
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@ -1945,23 +1943,6 @@ class ComputeManager(manager.Manager):
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swap,
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block_device_mapping)
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def _block_device_info_to_legacy(self, block_device_info):
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"""Convert BDI to the old format for drivers that need it."""
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if self.use_legacy_block_device_info:
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ephemerals = driver_block_device.legacy_block_devices(
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driver.block_device_info_get_ephemerals(block_device_info))
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mapping = driver_block_device.legacy_block_devices(
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driver.block_device_info_get_mapping(block_device_info))
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swap = block_device_info['swap']
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if swap:
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swap = swap.legacy()
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block_device_info.update({
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'ephemerals': ephemerals,
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'swap': swap,
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'block_device_mapping': mapping})
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def _add_missing_dev_names(self, bdms, instance):
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for bdm in bdms:
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if bdm.device_name is not None:
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@ -1983,7 +1964,6 @@ class ComputeManager(manager.Manager):
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mapping, context, instance, self.volume_api, self.driver,
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wait_func=self._await_block_device_map_created)
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self._block_device_info_to_legacy(block_device_info)
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return block_device_info
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except exception.OverQuota as e:
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@ -2099,8 +2079,6 @@ class ComputeManager(manager.Manager):
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driver.block_device_info_get_mapping(block_device_info),
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context, instance, self.volume_api, self.driver)
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self._block_device_info_to_legacy(block_device_info)
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return block_device_info
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def _build_failed(self, node):
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@ -1430,7 +1430,6 @@ class ComputeVolumeTestCase(BaseTestCase):
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}
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manager = compute_manager.ComputeManager()
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manager.use_legacy_block_device_info = False
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mock_bdm_saves = [mock.patch.object(bdm, 'save') for bdm in bdms]
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with test.nested(*mock_bdm_saves):
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block_device_info = manager._prep_block_device(self.context,
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@ -656,45 +656,6 @@ class TestBlockDeviceDict(test.NoDBTestCase):
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self.assertIn('Specifying volume type to existing volume is '
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'not supported', str(ex))
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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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def test_legacy_mapping_from_object_list(self):
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bdm1 = objects.BlockDeviceMapping()
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bdm1 = objects.BlockDeviceMapping._from_db_object(
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None, bdm1, fake_block_device.FakeDbBlockDeviceDict(
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self.new_mapping[0]))
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bdm2 = objects.BlockDeviceMapping()
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bdm2 = objects.BlockDeviceMapping._from_db_object(
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None, bdm2, fake_block_device.FakeDbBlockDeviceDict(
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self.new_mapping[1]))
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bdmlist = objects.BlockDeviceMappingList()
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bdmlist.objects = [bdm1, bdm2]
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block_device.legacy_mapping(bdmlist)
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def test_image_mapping(self):
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removed_fields = ['id', 'instance_uuid', 'connection_info',
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'created_at', 'updated_at', 'deleted_at', 'deleted']
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@ -943,10 +943,6 @@ class LibvirtConnTestCase(test.NoDBTestCase,
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inst = libvirt_driver.LibvirtDriver(fake.FakeVirtAPI(), True)
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self.assertPublicAPISignatures(baseinst, inst)
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def test_legacy_block_device_info(self):
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drvr = libvirt_driver.LibvirtDriver(fake.FakeVirtAPI(), True)
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self.assertFalse(drvr.need_legacy_block_device_info)
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@mock.patch.object(libvirt_driver.LibvirtDriver, '_get_cpu_traits')
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@mock.patch.object(libvirt_driver.LibvirtDriver, '_get_storage_bus_traits')
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@mock.patch.object(libvirt_driver.LibvirtDriver, '_get_video_model_traits')
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@ -64,10 +64,6 @@ class TestDriverBlockDevice(test.NoDBTestCase):
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'swap_size': 2,
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'disk_bus': 'scsi'}
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swap_legacy_driver_bdm = {
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'device_name': '/dev/sdb1',
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'swap_size': 2}
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ephemeral_bdm_dict = block_device.BlockDeviceDict(
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{'id': 2, 'instance_uuid': uuids.instance,
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'device_name': '/dev/sdc1',
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@ -87,12 +83,6 @@ class TestDriverBlockDevice(test.NoDBTestCase):
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'guest_format': 'ext4',
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'disk_bus': 'scsi'}
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ephemeral_legacy_driver_bdm = {
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'device_name': '/dev/sdc1',
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'size': 4,
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'virtual_name': 'ephemeral0',
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'num': 0}
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volume_bdm_dict = block_device.BlockDeviceDict(
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{'id': 3, 'instance_uuid': uuids.instance,
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'device_name': '/dev/sda1',
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@ -117,11 +107,6 @@ class TestDriverBlockDevice(test.NoDBTestCase):
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'boot_index': 0,
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'volume_type': None}
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volume_legacy_driver_bdm = {
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'mount_device': '/dev/sda1',
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'connection_info': {"fake": "connection_info"},
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'delete_on_termination': False}
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volume_bdm_dict_without_conn_info = block_device.BlockDeviceDict(
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{'id': 3, 'instance_uuid': uuids.instance,
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'device_name': '/dev/sda1',
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@ -172,11 +157,6 @@ class TestDriverBlockDevice(test.NoDBTestCase):
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'boot_index': -1,
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'volume_type': None}
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volsnapshot_legacy_driver_bdm = {
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'mount_device': '/dev/sda2',
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'connection_info': {"fake": "connection_info"},
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'delete_on_termination': True}
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volimage_bdm_dict = block_device.BlockDeviceDict(
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{'id': 5, 'instance_uuid': uuids.instance,
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'device_name': '/dev/sda2',
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@ -202,11 +182,6 @@ class TestDriverBlockDevice(test.NoDBTestCase):
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'boot_index': -1,
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'volume_type': None}
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volimage_legacy_driver_bdm = {
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'mount_device': '/dev/sda2',
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'connection_info': {"fake": "connection_info"},
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'delete_on_termination': True}
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volblank_bdm_dict = block_device.BlockDeviceDict(
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{'id': 6, 'instance_uuid': uuids.instance,
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'device_name': '/dev/sda2',
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@ -231,11 +206,6 @@ class TestDriverBlockDevice(test.NoDBTestCase):
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'boot_index': -1,
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'volume_type': None}
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volblank_legacy_driver_bdm = {
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'mount_device': '/dev/sda2',
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'connection_info': {"fake": "connection_info"},
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'delete_on_termination': True}
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def setUp(self):
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super(TestDriverBlockDevice, self).setUp()
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self.volume_api = mock.MagicMock(autospec=cinder.API)
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@ -339,9 +309,6 @@ class TestDriverBlockDevice(test.NoDBTestCase):
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# Reset the value
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test_bdm[field] = value
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expected = getattr(self, "%s_legacy_driver_bdm" % name)
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self.assertThat(expected, matchers.DictMatches(test_bdm.legacy()))
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# Test passthru attributes
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for passthru in test_bdm._proxy_as_attr:
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self.assertEqual(getattr(test_bdm, passthru),
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@ -1289,37 +1256,11 @@ class TestDriverBlockDevice(test.NoDBTestCase):
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driver_block_device.convert_volume(
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self.volume_bdm_without_conn_info))
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def test_legacy_block_devices(self):
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test_snapshot = self.driver_classes['volsnapshot'](
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self.volsnapshot_bdm)
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block_device_mapping = [test_snapshot, test_snapshot]
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legacy_bdm = driver_block_device.legacy_block_devices(
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block_device_mapping)
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self.assertEqual(legacy_bdm, [self.volsnapshot_legacy_driver_bdm,
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self.volsnapshot_legacy_driver_bdm])
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# Test that the ephemerals work as expected
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test_ephemerals = [self.driver_classes['ephemeral'](
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self.ephemeral_bdm) for _ in range(2)]
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expected = [self.ephemeral_legacy_driver_bdm.copy()
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for _ in range(2)]
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expected[0]['virtual_name'] = 'ephemeral0'
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expected[0]['num'] = 0
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expected[1]['virtual_name'] = 'ephemeral1'
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expected[1]['num'] = 1
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legacy_ephemerals = driver_block_device.legacy_block_devices(
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test_ephemerals)
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self.assertEqual(expected, legacy_ephemerals)
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def test_get_swap(self):
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swap = [self.swap_driver_bdm]
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legacy_swap = [self.swap_legacy_driver_bdm]
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no_swap = [self.volume_driver_bdm]
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self.assertEqual(swap[0], driver_block_device.get_swap(swap))
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self.assertEqual(legacy_swap[0],
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driver_block_device.get_swap(legacy_swap))
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self.assertIsNone(driver_block_device.get_swap(no_swap))
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self.assertIsNone(driver_block_device.get_swap([]))
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|
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@ -266,9 +266,6 @@ class VMwareAPIVMTestCase(test.NoDBTestCase,
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super(VMwareAPIVMTestCase, self).tearDown()
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vmwareapi_fake.cleanup()
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def test_legacy_block_device_info(self):
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self.assertFalse(self.conn.need_legacy_block_device_info)
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def test_get_host_ip_addr(self):
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self.assertEqual(HOST, self.conn.get_host_ip_addr())
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|
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@ -83,9 +83,8 @@ class DriverBlockDevice(dict):
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Uses block device objects internally to do the database access.
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_fields and _legacy_fields class attributes present a set of fields that
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are expected on a certain DriverBlockDevice type. We may have more legacy
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versions in the future.
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The _fields class attribute present a set of fields that
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are expected on a certain DriverBlockDevice type.
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If an attribute access is attempted for a name that is found in the
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_proxy_as_attr set, it will be proxied to the underlying object. This
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@ -103,7 +102,6 @@ class DriverBlockDevice(dict):
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"""
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_fields = set()
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_legacy_fields = set()
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_proxy_as_attr_inherited = set(['uuid', 'is_volume'])
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_update_on_save = {'disk_bus': None,
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@ -179,14 +177,6 @@ class DriverBlockDevice(dict):
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else:
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return super(DriverBlockDevice, self).get(name, default)
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def legacy(self):
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"""Basic legacy transformation.
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Basic method will just drop the fields that are not in
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_legacy_fields set. Override this in subclass if needed.
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"""
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return {key: self.get(key) for key in self._legacy_fields}
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def attach(self, **kwargs):
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"""Make the device available to be used by VMs.
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@ -223,7 +213,6 @@ class DriverBlockDevice(dict):
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class DriverSwapBlockDevice(DriverBlockDevice):
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_fields = set(['device_name', 'swap_size', 'disk_bus'])
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_legacy_fields = _fields - set(['disk_bus'])
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_update_on_save = {'disk_bus': None,
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'device_name': None}
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@ -241,8 +230,6 @@ class DriverSwapBlockDevice(DriverBlockDevice):
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class DriverEphemeralBlockDevice(DriverBlockDevice):
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_new_only_fields = set(['disk_bus', 'device_type', 'guest_format'])
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_fields = set(['device_name', 'size']) | _new_only_fields
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_legacy_fields = (_fields - _new_only_fields |
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set(['num', 'virtual_name']))
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def _transform(self):
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if not block_device.new_format_is_ephemeral(self._bdm_obj):
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@ -255,20 +242,19 @@ class DriverEphemeralBlockDevice(DriverBlockDevice):
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'guest_format': self._bdm_obj.guest_format
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})
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def legacy(self, num=0):
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legacy_bdm = super(DriverEphemeralBlockDevice, self).legacy()
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legacy_bdm['num'] = num
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legacy_bdm['virtual_name'] = 'ephemeral' + str(num)
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return legacy_bdm
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class DriverVolumeBlockDevice(DriverBlockDevice):
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_legacy_fields = set(['connection_info', 'mount_device',
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'delete_on_termination'])
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_new_fields = set(['guest_format', 'device_type',
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'disk_bus', 'boot_index',
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'attachment_id'])
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_fields = _legacy_fields | _new_fields
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_new_fields = set([
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'guest_format',
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'device_type',
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'disk_bus',
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'boot_index',
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'attachment_id'])
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_fields = set([
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'connection_info',
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'mount_device',
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'delete_on_termination'
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]) | _new_fields
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_valid_source = 'volume'
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_valid_destination = 'volume'
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|
|
@ -884,19 +870,6 @@ def refresh_conn_infos(block_device_mapping, *refresh_args, **refresh_kwargs):
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return block_device_mapping
|
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def legacy_block_devices(block_device_mapping):
|
||||
bdms = [bdm.legacy() for bdm in block_device_mapping]
|
||||
|
||||
# Re-enumerate ephemeral devices
|
||||
if all(isinstance(bdm, DriverEphemeralBlockDevice)
|
||||
for bdm in block_device_mapping):
|
||||
for i, dev in enumerate(bdms):
|
||||
dev['virtual_name'] = dev['virtual_name'][:-1] + str(i)
|
||||
dev['num'] = i
|
||||
|
||||
return bdms
|
||||
|
||||
|
||||
def get_swap(transformed_list):
|
||||
"""Get the swap device out of the list context.
|
||||
|
||||
|
|
|
|||
|
|
@ -1620,16 +1620,6 @@ class ComputeDriver(object):
|
|||
"""
|
||||
return True
|
||||
|
||||
# TODO(lyarwood): This is no longer used and should be removed.
|
||||
@property
|
||||
def need_legacy_block_device_info(self):
|
||||
"""Tell the caller if the driver requires legacy block device info.
|
||||
|
||||
Tell the caller whether we expect the legacy format of block
|
||||
device info to be passed in to methods that expect it.
|
||||
"""
|
||||
return True
|
||||
|
||||
def volume_snapshot_create(self, context, instance, volume_id,
|
||||
create_info):
|
||||
"""Snapshots volumes attached to a specified instance.
|
||||
|
|
|
|||
|
|
@ -654,10 +654,6 @@ class FakeDriver(driver.ComputeDriver):
|
|||
def unquiesce(self, context, instance, image_meta):
|
||||
pass
|
||||
|
||||
@property
|
||||
def need_legacy_block_device_info(self):
|
||||
return False
|
||||
|
||||
|
||||
class FakeVirtAPI(virtapi.VirtAPI):
|
||||
@contextlib.contextmanager
|
||||
|
|
|
|||
|
|
@ -144,10 +144,6 @@ class HyperVDriver(driver.ComputeDriver):
|
|||
'has been deprecated In Queens, and will be removed '
|
||||
'in Rocky.')
|
||||
|
||||
@property
|
||||
def need_legacy_block_device_info(self):
|
||||
return False
|
||||
|
||||
def init_host(self, host):
|
||||
self._serialconsoleops.start_console_handlers()
|
||||
event_handler = eventhandler.InstanceEventHandler(
|
||||
|
|
|
|||
|
|
@ -1893,10 +1893,6 @@ class IronicDriver(virt_driver.ComputeDriver):
|
|||
instance=instance)
|
||||
raise exception.ConsoleTypeUnavailable(console_type='serial')
|
||||
|
||||
@property
|
||||
def need_legacy_block_device_info(self):
|
||||
return False
|
||||
|
||||
def prepare_networks_before_block_device_mapping(self, instance,
|
||||
network_info):
|
||||
"""Prepare networks before the block devices are mapped to instance.
|
||||
|
|
|
|||
|
|
@ -11558,10 +11558,6 @@ class LibvirtDriver(driver.ComputeDriver):
|
|||
LOG.info('Deletion of %s complete', target_del, instance=instance)
|
||||
return True
|
||||
|
||||
@property
|
||||
def need_legacy_block_device_info(self):
|
||||
return False
|
||||
|
||||
def default_root_device_name(self, instance, image_meta, root_bdm):
|
||||
disk_bus = blockinfo.get_disk_bus_for_device_type(
|
||||
instance, CONF.libvirt.virt_type, image_meta, "disk")
|
||||
|
|
|
|||
|
|
@ -172,10 +172,6 @@ class VMwareVCDriver(driver.ComputeDriver):
|
|||
'%(version)s in the 16.0.0 release.',
|
||||
{'version': constants.NEXT_MIN_VC_VERSION})
|
||||
|
||||
@property
|
||||
def need_legacy_block_device_info(self):
|
||||
return False
|
||||
|
||||
def _update_pbm_location(self):
|
||||
if CONF.vmware.pbm_wsdl_location:
|
||||
pbm_wsdl_loc = CONF.vmware.pbm_wsdl_location
|
||||
|
|
|
|||
Loading…
Reference in New Issue