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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 mock
import nova.conf
from nova.tests.unit.virt.libvirt.volume import test_volume
from nova.virt.libvirt.volume import net
CONF = nova.conf.CONF
class LibvirtNetVolumeDriverTestCase(
test_volume.LibvirtISCSIVolumeBaseTestCase):
"""Tests the libvirt network volume driver."""
def _assertNetworkAndProtocolEquals(self, tree):
self.assertEqual('network', tree.get('type'))
self.assertEqual('rbd', tree.find('./source').get('protocol'))
rbd_name = '%s/%s' % ('rbd', self.name)
self.assertEqual(rbd_name, tree.find('./source').get('name'))
def _assertISCSINetworkAndProtocolEquals(self, tree):
self.assertEqual('network', tree.get('type'))
self.assertEqual('iscsi', tree.find('./source').get('protocol'))
iscsi_name = '%s/%s' % (self.iqn, self.vol['id'])
self.assertEqual(iscsi_name, tree.find('./source').get('name'))
def rbd_connection(self, volume):
return {
'driver_volume_type': 'rbd',
'data': {
'name': '%s/%s' % ('rbd', volume['name']),
'auth_enabled': CONF.libvirt.rbd_user is not None,
'auth_username': CONF.libvirt.rbd_user,
'secret_type': 'ceph',
'secret_uuid': CONF.libvirt.rbd_secret_uuid,
'qos_specs': {
'total_bytes_sec': '1048576',
'read_iops_sec': '500',
}
}
}
def test_libvirt_rbd_driver(self):
libvirt_driver = net.LibvirtNetVolumeDriver(self.fake_host)
connection_info = self.rbd_connection(self.vol)
conf = libvirt_driver.get_config(connection_info, self.disk_info)
tree = conf.format_dom()
self._assertNetworkAndProtocolEquals(tree)
self.assertIsNone(tree.find('./source/auth'))
self.assertEqual('1048576', tree.find('./iotune/total_bytes_sec').text)
self.assertEqual('500', tree.find('./iotune/read_iops_sec').text)
libvirt_driver.disconnect_volume(connection_info,
mock.sentinel.instance)
def test_libvirt_rbd_driver_hosts(self):
libvirt_driver = net.LibvirtNetVolumeDriver(self.fake_host)
connection_info = self.rbd_connection(self.vol)
hosts = ['example.com', '1.2.3.4', '::1']
ports = [None, '6790', '6791']
connection_info['data']['hosts'] = hosts
connection_info['data']['ports'] = ports
conf = libvirt_driver.get_config(connection_info, self.disk_info)
tree = conf.format_dom()
self._assertNetworkAndProtocolEquals(tree)
self.assertIsNone(tree.find('./source/auth'))
found_hosts = tree.findall('./source/host')
self.assertEqual(hosts, [host.get('name') for host in found_hosts])
self.assertEqual(ports, [host.get('port') for host in found_hosts])
libvirt_driver.disconnect_volume(connection_info,
mock.sentinel.instance)
def test_libvirt_rbd_driver_auth_enabled(self):
libvirt_driver = net.LibvirtNetVolumeDriver(self.fake_host)
connection_info = self.rbd_connection(self.vol)
secret_type = 'ceph'
connection_info['data']['auth_enabled'] = True
connection_info['data']['auth_username'] = self.user
connection_info['data']['secret_type'] = secret_type
connection_info['data']['secret_uuid'] = self.uuid
conf = libvirt_driver.get_config(connection_info, self.disk_info)
tree = conf.format_dom()
self._assertNetworkAndProtocolEquals(tree)
self.assertEqual(self.user, tree.find('./auth').get('username'))
self.assertEqual(secret_type, tree.find('./auth/secret').get('type'))
self.assertEqual(self.uuid, tree.find('./auth/secret').get('uuid'))
libvirt_driver.disconnect_volume(connection_info,
mock.sentinel.instance)
def test_libvirt_rbd_driver_auth_enabled_flags(self):
# The values from the cinder connection_info take precedence over
# nova.conf values.
libvirt_driver = net.LibvirtNetVolumeDriver(self.fake_host)
connection_info = self.rbd_connection(self.vol)
secret_type = 'ceph'
connection_info['data']['auth_enabled'] = True
connection_info['data']['auth_username'] = self.user
connection_info['data']['secret_type'] = secret_type
connection_info['data']['secret_uuid'] = self.uuid
flags_uuid = '37152720-1785-11e2-a740-af0c1d8b8e4b'
flags_user = 'bar'
self.flags(rbd_user=flags_user,
rbd_secret_uuid=flags_uuid,
group='libvirt')
conf = libvirt_driver.get_config(connection_info, self.disk_info)
tree = conf.format_dom()
self._assertNetworkAndProtocolEquals(tree)
self.assertEqual(self.user, tree.find('./auth').get('username'))
self.assertEqual(secret_type, tree.find('./auth/secret').get('type'))
self.assertEqual(self.uuid, tree.find('./auth/secret').get('uuid'))
libvirt_driver.disconnect_volume(connection_info,
mock.sentinel.instance)
def test_libvirt_rbd_driver_auth_enabled_flags_secret_uuid_fallback(self):
"""The values from the cinder connection_info take precedence over
nova.conf values, unless it's old connection data where the
secret_uuid wasn't set on the cinder side for the original connection
which is now persisted in the
nova.block_device_mappings.connection_info column and used here. In
this case we fallback to use the local config for secret_uuid and
username.
"""
libvirt_driver = net.LibvirtNetVolumeDriver(self.fake_host)
connection_info = self.rbd_connection(self.vol)
secret_type = 'ceph'
connection_info['data']['auth_enabled'] = True
connection_info['data']['auth_username'] = self.user
connection_info['data']['secret_type'] = secret_type
# Fake out cinder not setting the secret_uuid in the old connection.
connection_info['data']['secret_uuid'] = None
flags_uuid = '37152720-1785-11e2-a740-af0c1d8b8e4b'
flags_user = 'bar'
self.flags(rbd_user=flags_user,
rbd_secret_uuid=flags_uuid,
group='libvirt')
conf = libvirt_driver.get_config(connection_info, self.disk_info)
tree = conf.format_dom()
self._assertNetworkAndProtocolEquals(tree)
self.assertEqual(flags_user, tree.find('./auth').get('username'))
self.assertEqual(secret_type, tree.find('./auth/secret').get('type'))
# Assert that the secret_uuid comes from CONF.libvirt.rbd_secret_uuid.
self.assertEqual(flags_uuid, tree.find('./auth/secret').get('uuid'))
libvirt_driver.disconnect_volume(connection_info,
mock.sentinel.instance)
def test_libvirt_rbd_driver_auth_disabled(self):
libvirt_driver = net.LibvirtNetVolumeDriver(self.fake_host)
connection_info = self.rbd_connection(self.vol)
secret_type = 'ceph'
connection_info['data']['auth_enabled'] = False
connection_info['data']['auth_username'] = self.user
connection_info['data']['secret_type'] = secret_type
connection_info['data']['secret_uuid'] = self.uuid
conf = libvirt_driver.get_config(connection_info, self.disk_info)
tree = conf.format_dom()
self._assertNetworkAndProtocolEquals(tree)
self.assertIsNone(tree.find('./auth'))
libvirt_driver.disconnect_volume(connection_info,
mock.sentinel.instance)
def test_libvirt_rbd_driver_auth_disabled_flags_override(self):
libvirt_driver = net.LibvirtNetVolumeDriver(self.fake_host)
connection_info = self.rbd_connection(self.vol)
secret_type = 'ceph'
connection_info['data']['auth_enabled'] = False
connection_info['data']['auth_username'] = self.user
connection_info['data']['secret_type'] = secret_type
connection_info['data']['secret_uuid'] = self.uuid
# NOTE: Supplying the rbd_secret_uuid will enable authentication
# locally in nova-compute even if not enabled in nova-volume/cinder
flags_uuid = '37152720-1785-11e2-a740-af0c1d8b8e4b'
flags_user = 'bar'
self.flags(rbd_user=flags_user,
rbd_secret_uuid=flags_uuid,
group='libvirt')
conf = libvirt_driver.get_config(connection_info, self.disk_info)
tree = conf.format_dom()
self._assertNetworkAndProtocolEquals(tree)
self.assertEqual(flags_user, tree.find('./auth').get('username'))
self.assertEqual(secret_type, tree.find('./auth/secret').get('type'))
self.assertEqual(flags_uuid, tree.find('./auth/secret').get('uuid'))
libvirt_driver.disconnect_volume(connection_info,
mock.sentinel.instance)
def test_extend_volume(self):
device_path = '/dev/fake-dev'
connection_info = {
'driver_volume_type': 'net',
'data': {'device_path': device_path}}
requested_size = 20 * pow(1024, 3) # 20GiB
libvirt_driver = net.LibvirtNetVolumeDriver(self.fake_host)
new_size = libvirt_driver.extend_volume(connection_info,
mock.sentinel.instance,
requested_size)
self.assertEqual(requested_size, new_size)
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