Source code for volume.admin.test_multi_backend
# 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.
from tempest.api.volume import base
from tempest.common import waiters
from tempest import config
from tempest.lib.common.utils import data_utils
from tempest.lib import decorators
CONF = config.CONF
[docs]
class VolumeMultiBackendTest(base.BaseVolumeAdminTest):
"""Test volume multi backends"""
@classmethod
def skip_checks(cls):
super(VolumeMultiBackendTest, 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(VolumeMultiBackendTest, cls).resource_setup()
# read backend name from a list .
backend_names = set(CONF.volume.backend_names)
cls.volume_id_list_with_prefix = []
cls.volume_id_list_without_prefix = []
# Volume/Type creation (uses volume_backend_name)
# It is not allowed to create the same backend name twice
for backend_name in backend_names:
# Volume/Type creation (uses backend_name)
cls._create_type_and_volume(backend_name, False)
# Volume/Type creation (uses capabilities:volume_backend_name)
cls._create_type_and_volume(backend_name, True)
@classmethod
def _create_type_and_volume(cls, backend_name_key, with_prefix):
# Volume/Type creation
type_name = data_utils.rand_name(
prefix=CONF.resource_name_prefix,
name=cls.__name__ + '-Type')
vol_name = data_utils.rand_name(
prefix=CONF.resource_name_prefix,
name=cls.__name__ + '-Volume')
spec_key_with_prefix = "capabilities:volume_backend_name"
spec_key_without_prefix = "volume_backend_name"
if with_prefix:
extra_specs = {spec_key_with_prefix: backend_name_key}
else:
extra_specs = {spec_key_without_prefix: backend_name_key}
cls.create_volume_type(name=type_name,
extra_specs=extra_specs)
params = {'name': vol_name, 'volume_type': type_name,
'size': CONF.volume.volume_size}
cls.volume = cls.create_volume(**params)
if with_prefix:
cls.volume_id_list_with_prefix.append(cls.volume['id'])
else:
cls.volume_id_list_without_prefix.append(
cls.volume['id'])
waiters.wait_for_volume_resource_status(cls.admin_volume_client,
cls.volume['id'], 'available')
[docs]
@decorators.idempotent_id('c1a41f3f-9dad-493e-9f09-3ff197d477cc')
def test_backend_name_reporting(self):
"""Test backend name reporting for volume when type is without prefix
1. Create volume type, with 'volume_backend_name' as extra spec key
2. Create volume using the created volume type
3. Check 'os-vol-host-attr:host' of the volume info, the value should
contain '@' character, like 'cinder@CloveStorage#tecs_backend'
"""
for volume_id in self.volume_id_list_without_prefix:
self._test_backend_name_reporting_by_volume_id(volume_id)
[docs]
@decorators.idempotent_id('f38e647f-ab42-4a31-a2e7-ca86a6485215')
def test_backend_name_reporting_with_prefix(self):
"""Test backend name reporting for volume when type is with prefix
1. Create volume type, with 'capabilities:volume_backend_name' as
extra spec key
2. Create volume using the created volume type
3. Check 'os-vol-host-attr:host' of the volume info, the value should
contain '@' character, like 'cinder@CloveStorage#tecs_backend'
"""
for volume_id in self.volume_id_list_with_prefix:
self._test_backend_name_reporting_by_volume_id(volume_id)
[docs]
@decorators.idempotent_id('46435ab1-a0af-4401-8373-f14e66b0dd58')
def test_backend_name_distinction(self):
"""Test volume backend distinction when type is without prefix
1. For each backend, create volume type with 'volume_backend_name'
as extra spec key
2. Create volumes using the created volume types
3. Check 'os-vol-host-attr:host' of each created volume is different.
"""
self._test_backend_name_distinction(self.volume_id_list_without_prefix)
[docs]
@decorators.idempotent_id('4236305b-b65a-4bfc-a9d2-69cb5b2bf2ed')
def test_backend_name_distinction_with_prefix(self):
"""Test volume backend distinction when type is with prefix
1. For each backend, create volume type with
'capabilities:volume_backend_name' as extra spec key
2. Create volumes using the created volume types
3. Check 'os-vol-host-attr:host' of each created volume is different.
"""
self._test_backend_name_distinction(self.volume_id_list_with_prefix)
def _get_volume_host(self, volume_id):
return self.admin_volume_client.show_volume(
volume_id)['volume']['os-vol-host-attr:host']
def _test_backend_name_reporting_by_volume_id(self, volume_id):
# this test checks if os-vol-attr:host is populated correctly after
# the multi backend feature has been enabled
# if multi-backend is enabled: os-vol-attr:host should be like:
# host@backend_name
volume = self.admin_volume_client.show_volume(volume_id)['volume']
volume1_host = volume['os-vol-host-attr:host']
msg = ("multi-backend reporting incorrect values for volume %s" %
volume_id)
self.assertGreater(len(volume1_host.split("@")), 1, msg)
def _test_backend_name_distinction(self, volume_id_list):
# this test checks that the volumes created at setUp don't
# belong to the same backend (if they are, than the
# volume backend distinction is not working properly)
volume_hosts = [self._get_volume_host(volume) for volume in
volume_id_list]
# assert that volumes are each created on separate hosts:
msg = ("volumes %s were created in the same backend" % ", "
.join(volume_hosts))
self.assertCountEqual(volume_hosts, set(volume_hosts), msg)
