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test_volume_retype.py
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test_volume_retype.py
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import abc
from oslo_log import log as logging
import testtools
from tempest.api.volume import base
from tempest.common import waiters
from tempest import config
from tempest.lib import decorators
CONF = config.CONF
LOG = logging.getLogger(__name__)
class VolumeRetypeTest(base.BaseVolumeAdminTest):
def _wait_for_internal_volume_cleanup(self, vol):
# When retyping a volume, Cinder creates an internal volume in the
# target backend. The volume in the source backend is deleted after
# the migration, so we need to wait for Cinder delete this volume
# before deleting the types we've created.
# This list should return 2 volumes until the copy and cleanup
# process is finished.
fetched_list = self.admin_volume_client.list_volumes(
params={'all_tenants': True,
'name': vol['name']})['volumes']
for fetched_vol in fetched_list:
if fetched_vol['id'] != vol['id']:
# This is the Cinder internal volume
LOG.debug('Waiting for internal volume %s deletion',
fetched_vol['id'])
self.admin_volume_client.wait_for_resource_deletion(
fetched_vol['id'])
break
@abc.abstractmethod
def _verify_migration(self, source_vol, dest_vol):
pass
def _create_volume_from_snapshot(self):
# Create a volume in the first backend
src_vol = self.create_volume(volume_type=self.src_vol_type['name'])
# Create a volume snapshot
snapshot = self.create_snapshot(src_vol['id'])
# Create a volume from the snapshot
src_vol = self.create_volume(volume_type=self.src_vol_type['name'],
snapshot_id=snapshot['id'])
# Delete the snapshot
self.snapshots_client.delete_snapshot(snapshot['id'])
self.snapshots_client.wait_for_resource_deletion(snapshot['id'])
return src_vol
def _retype_volume(self, volume, migration_policy):
volume_source = self.admin_volume_client.show_volume(
volume['id'])['volume']
self.volumes_client.retype_volume(
volume['id'],
new_type=self.dst_vol_type['name'],
migration_policy=migration_policy)
self.addCleanup(self._wait_for_internal_volume_cleanup, volume)
waiters.wait_for_volume_retype(self.volumes_client, volume['id'],
self.dst_vol_type['name'])
volume_dest = self.admin_volume_client.show_volume(
volume['id'])['volume']
self._verify_migration(volume_source, volume_dest)
class VolumeRetypeWithMigrationTest(VolumeRetypeTest):
"""Test volume retype with migration"""
@classmethod
def skip_checks(cls):
super(VolumeRetypeTest, cls).skip_checks()
if not CONF.volume_feature_enabled.multi_backend:
raise cls.skipException("Cinder multi-backend feature disabled")
if len(set(CONF.volume.backend_names)) < 2:
raise cls.skipException("Requires at least two different "
"backend names")
@classmethod
def resource_setup(cls):
super(VolumeRetypeWithMigrationTest, cls).resource_setup()
# read backend name from a list.
backend_src = CONF.volume.backend_names[0]
backend_dst = CONF.volume.backend_names[1]
extra_specs_src = {"volume_backend_name": backend_src}
extra_specs_dst = {"volume_backend_name": backend_dst}
cls.src_vol_type = cls.create_volume_type(extra_specs=extra_specs_src)
cls.dst_vol_type = cls.create_volume_type(extra_specs=extra_specs_dst)
def _verify_migration(self, volume_source, volume_dest):
keys_with_no_change = ('id', 'size', 'description', 'name',
'user_id', 'os-vol-tenant-attr:tenant_id')
keys_with_change = ('volume_type', 'os-vol-host-attr:host')
# Check the volume information after the migration.
self.assertEqual('success',
volume_dest['os-vol-mig-status-attr:migstat'])
self.assertEqual('success', volume_dest['migration_status'])
for key in keys_with_no_change:
self.assertEqual(volume_source[key], volume_dest[key])
for key in keys_with_change:
self.assertNotEqual(volume_source[key], volume_dest[key])
self.assertEqual(volume_dest['volume_type'], self.dst_vol_type['name'])
@decorators.idempotent_id('a1a41f3f-9dad-493e-9f09-3ff197d477cd')
def test_available_volume_retype_with_migration(self):
"""Test volume retype with migration
1. Create volume1 with volume_type1
2. Retype volume1 to volume_type2 with migration_policy='on-demand'
3. Check volume1's volume_type is changed to volume_type2, and
'os-vol-host-attr:host' in the volume info is changed.
"""
src_vol = self.create_volume(volume_type=self.src_vol_type['name'])
self._retype_volume(src_vol, migration_policy='on-demand')
@decorators.idempotent_id('d0d9554f-e7a5-4104-8973-f35b27ccb60d')
@testtools.skipUnless(CONF.volume_feature_enabled.snapshot,
"Cinder volume snapshots are disabled.")
def test_volume_from_snapshot_retype_with_migration(self):
"""Test volume created from snapshot retype with migration
1. Create volume1 from snapshot with volume_type1
2. Retype volume1 to volume_type2 with migration_policy='on-demand'
3. Check volume1's volume_type is changed to volume_type2, and
'os-vol-host-attr:host' in the volume info is changed.
"""
src_vol = self._create_volume_from_snapshot()
# Migrate the volume from snapshot to the second backend
self._retype_volume(src_vol, migration_policy='on-demand')
class VolumeRetypeWithoutMigrationTest(VolumeRetypeTest):
"""Test volume retype without migration"""
@classmethod
def resource_setup(cls):
super(VolumeRetypeWithoutMigrationTest, cls).resource_setup()
cls.src_vol_type = cls.create_volume_type('volume-type-1')
cls.dst_vol_type = cls.create_volume_type('volume-type-2')
def _verify_migration(self, volume_source, volume_dest):
keys_with_no_change = ('id', 'size', 'description', 'name',
'user_id', 'os-vol-tenant-attr:tenant_id',
'os-vol-host-attr:host')
keys_with_change = ('volume_type',)
# Check the volume information after the retype
self.assertIsNone(volume_dest['os-vol-mig-status-attr:migstat'])
self.assertIsNone(volume_dest['migration_status'])
for key in keys_with_no_change:
self.assertEqual(volume_source[key], volume_dest[key])
for key in keys_with_change:
self.assertNotEqual(volume_source[key], volume_dest[key])
self.assertEqual(volume_dest['volume_type'], self.dst_vol_type['name'])
@decorators.idempotent_id('b90412ee-465d-46e9-b249-ec84a47d5f25')
def test_available_volume_retype(self):
"""Test volume retype without migration
1. Create volume1 with volume_type1
2. Retype volume1 to volume_type2 with migration_policy='never'
3. Check volume1's volume_type is changed to volume_type2, and
'os-vol-host-attr:host' in the volume info is not changed.
"""
src_vol = self.create_volume(volume_type=self.src_vol_type['name'])
# Retype the volume from snapshot
self._retype_volume(src_vol, migration_policy='never')