--- /dev/null
+# Copyright 2015 CloudFounders NV
+#
+# 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.
+
+"""
+Mock basic unit tests for the OVS Cinder Plugin
+"""
+import mock
+
+from cinder import test
+import cinder.volume.drivers.openvstorage as ovsvd
+
+
+#MOCKUPS
+MOCK_hostname = 'test-hostname'
+MOCK_mountpoint = '/mnt/test'
+MOCK_vdisk_guid = '0000'
+MOCK_vdisk_guid2 = '1111'
+MOCK_vdisk_guid3 = '2222'
+MOCK_vdisk_devicename = 'volume-test.raw'
+MOCK_vdisk_devicename2 = 'volume-test-clone.raw'
+MOCK_vdisk_devicename3 = 'volume-test-template.raw'
+MOCK_vdisk_disk_info = {'object_type': 'DISK'}
+MOCK_vdisk_disk_info_template = {'object_type': 'TEMPLATE'}
+MOCK_volume_name = 'volume-test'
+MOCK_volume_name2 = 'volume-test-clone'
+MOCK_volume_name3 = 'volume-test-template'
+MOCK_volume_size = 10
+MOCK_volume_size_extend = 20
+MOCK_volume_type_id = 'RANDOM'
+MOCK_volume_id = '0'
+MOCK_volume_id2 = '1'
+MOCK_volume_id3 = '3'
+MOCK_volume_provider_location = '{0}/{1}'.format(
+ MOCK_mountpoint, MOCK_vdisk_devicename)
+MOCK_volume_provider_location2 = '{0}/{1}'.format(
+ MOCK_mountpoint, MOCK_vdisk_devicename2)
+MOCK_volume_provider_location3 = '{0}/{1}'.format(
+ MOCK_mountpoint, MOCK_vdisk_devicename3)
+MOCK_snapshot_id = '1234'
+MOCK_snapshot_display_name = 'test-snapshot'
+MOCK_pmachine_guid = '1111'
+MOCK_image_id = '9999'
+CALLED = {}
+
+
+class MockVDiskController():
+
+ def create_volume(self, location, size):
+ CALLED['create_volume'] = {'location': location, 'size': size}
+
+ def delete_volume(self, location):
+ CALLED['delete_volume'] = {'location': location}
+
+ def extend_volume(self, location, size):
+ CALLED['extend_volume'] = {'location': location, 'size': size}
+
+ def clone(self, diskguid, snapshotid, devicename, pmachineguid,
+ machinename, machineguid):
+ CALLED['clone_volume'] = diskguid
+ return {'backingdevice': '/%s.raw' % devicename,
+ 'diskguid': diskguid}
+
+ def create_snapshot(self, diskguid, metadata, snapshotid):
+ CALLED['create_snapshot'] = diskguid
+
+ def delete_snapshot(self, diskguid, snapshotid):
+ CALLED['delete_snapshot'] = diskguid
+
+ def create_from_template(self, diskguid, machinename, devicename,
+ pmachineguid, machineguid, storagedriver_guid):
+ CALLED['create_from_template'] = diskguid
+ return {'backingdevice': '/%s.raw' % devicename,
+ 'diskguid': diskguid}
+
+
+class MockStorageRouter():
+ name = MOCK_hostname
+
+
+class MockStorageDriver():
+ storagerouter = MockStorageRouter()
+ mountpoint = MOCK_mountpoint
+
+
+class MockVPool():
+ storagedrivers = [MockStorageDriver()]
+
+
+class MockVDisk():
+ vpool = MockVPool()
+ cinder_id = None
+ snapshots = []
+ vmachine_guid = None
+
+ def __init__(self, guid = MOCK_vdisk_guid,
+ devicename = None,
+ info = MOCK_vdisk_disk_info):
+ self.guid = guid
+ self.devicename = devicename
+ self.info = info
+ if guid == MOCK_vdisk_guid and not devicename:
+ self.devicename = MOCK_vdisk_devicename
+ elif guid == MOCK_vdisk_guid2 and not devicename:
+ self.devicename = MOCK_vdisk_devicename2
+ elif guid == MOCK_vdisk_guid3 and not devicename:
+ self.devicename = MOCK_vdisk_devicename3
+ self.info = {'object_type': 'TEMPLATE'}
+
+ def save(self):
+ pass
+
+
+class MockPMachine():
+ guid = MOCK_pmachine_guid
+ storagerouters = [MockStorageRouter()]
+
+ def __init__(self):
+ pass
+
+
+class MockVPoolList():
+
+ def get_vpool_by_name(self, name):
+ return MockVPool()
+
+
+class MockVDiskList():
+
+ def __init__(self, vdisks = None):
+ self.vdisks = vdisks
+ if not vdisks:
+ self.vdisks = [MockVDisk()]
+
+ def get_vdisks(self):
+ return self.vdisks
+
+
+class MockPMachineList():
+
+ def get_pmachines(self):
+ return [MockPMachine()]
+
+
+class MOCK_log():
+
+ def debug(self, *args, **kwargs):
+ pass
+
+ def error(self, *args, **kwargs):
+ pass
+
+ def info(self, *args, **kwargs):
+ pass
+
+ def exception(self, *args, **kwargs):
+ pass
+
+
+class MOCK_Context():
+ pass
+
+
+class MOCK_ImageService():
+ pass
+
+
+class MOCK_ImageUtils():
+ def fetch_to_raw(self, context, image_service, image_id, destination_path,
+ block_size, size, run_as_root=False):
+ CALLED['ImageUtils_fetch_to_raw'] = (destination_path, size)
+
+
+class MOCK_volume():
+ host = MOCK_hostname
+ size = MOCK_volume_size
+ volume_type_id = MOCK_volume_type_id
+
+ def __init__(self, display_name = MOCK_volume_name, id = MOCK_volume_id,
+ provider_location = None):
+ self.display_name = display_name
+ self.id = id
+ self.provider_location = provider_location
+ if self.id == MOCK_volume_id:
+ self.provider_location = MOCK_volume_provider_location
+ elif self.id == MOCK_volume_id2:
+ self.provider_location = MOCK_volume_provider_location2
+ elif self.id == MOCK_volume_id3:
+ self.provider_location = MOCK_volume_provider_location3
+
+ def __setitem__(self, attribute, value):
+ setattr(self, attribute, value)
+
+ def __getitem__(self, attribute):
+ return getattr(self, attribute)
+
+
+class MOCK_snapshot():
+ volume = MOCK_volume()
+ display_name = MOCK_snapshot_display_name
+ id = MOCK_snapshot_id
+
+
+# Fake Modules
+class vdiskhybrid():
+ VDisk = MockVDisk
+
+
+class pmachinelist():
+ PMachineList = MockPMachineList()
+
+
+class vdisklist():
+ def __init__(self, vdisks):
+ self.VDiskList = MockVDiskList(vdisks)
+
+
+class vpoollist():
+ VPoolList = MockVPoolList()
+
+
+class vdisklib():
+ VDiskController = MockVDiskController()
+
+
+class OVSPluginBaseTestCase(test.TestCase):
+ """Basic tests - mocked
+ """
+
+ def setUp(self):
+ vdisk1 = MockVDisk(MOCK_vdisk_guid, MOCK_vdisk_devicename)
+ vdisk2 = MockVDisk(MOCK_vdisk_guid2, MOCK_vdisk_devicename2)
+ vdisk3 = MockVDisk(MOCK_vdisk_guid3, MOCK_vdisk_devicename3)
+ super(OVSPluginBaseTestCase, self).setUp()
+ ovsvd.vdiskhybrid = vdiskhybrid()
+ ovsvd.vpoollist = vpoollist()
+ ovsvd.vdisklist = vdisklist([vdisk1, vdisk2, vdisk3])
+ ovsvd.vdisklib = vdisklib()
+ ovsvd.pmachinelist = pmachinelist()
+ ovsvd.LOG = MOCK_log()
+ ovsvd.image_utils = MOCK_ImageUtils()
+ self.driver = ovsvd.OVSVolumeDriver(configuration = mock.Mock())
+
+ def tearDown(self):
+ super(OVSPluginBaseTestCase, self).tearDown()
+
+ def test__get_hostname_mountpoint(self):
+ mountpoint = self.driver._get_hostname_mountpoint(MOCK_hostname)
+ self.assertTrue(mountpoint == MOCK_mountpoint, 'Wrong mountpoint')
+
+ def test__find_ovs_model_disk_by_location(self):
+ location = '{0}/{1}'.format(MOCK_mountpoint, MOCK_vdisk_devicename)
+ vdisk = self.driver._find_ovs_model_disk_by_location(location,
+ MOCK_hostname)
+ self.assertTrue(vdisk.devicename == MOCK_vdisk_devicename,
+ 'Wrong devicename')
+
+ def test_create_volume_mock(self):
+ result = self.driver.create_volume(MOCK_volume())
+ self.assertTrue(result['provider_location'] == '{0}/{1}.raw'.format(
+ MOCK_mountpoint, MOCK_volume_name), 'Wrong location')
+ self.assertTrue(CALLED['create_volume'] ==
+ {'location': MOCK_volume_provider_location,
+ 'size': MOCK_volume_size},
+ 'Wrong params')
+
+ def test_delete_volume_mock(self):
+ self.driver.delete_volume(MOCK_volume())
+ self.assertTrue(CALLED['delete_volume'] ==
+ {'location': MOCK_volume_provider_location},
+ 'Wrong params')
+
+ def test_extend_volume(self):
+ self.driver.extend_volume(MOCK_volume(), MOCK_volume_size_extend)
+ self.assertTrue(CALLED['extend_volume'] ==
+ {'location': MOCK_volume_provider_location,
+ 'size': MOCK_volume_size_extend},
+ 'Wrong params')
+
+ def test_copy_image_to_volume(self):
+ self.driver.copy_image_to_volume(MOCK_Context(), MOCK_volume(),
+ MOCK_ImageService(), MOCK_image_id)
+ self.assertTrue(CALLED['delete_volume'] ==
+ {'location': MOCK_volume_provider_location},
+ 'Wrong params')
+ self.assertTrue(CALLED['ImageUtils_fetch_to_raw'] ==
+ (MOCK_volume_provider_location, MOCK_volume_size),
+ 'Wrong params')
+ self.assertTrue(CALLED['extend_volume'] ==
+ {'location': MOCK_volume_provider_location,
+ 'size': MOCK_volume_size},
+ 'Wrong params')
+
+ # Test_copy_volume_to_image actually tests the standard behaviour of
+ # the super class, not our own specific code
+
+ def test_create_cloned_volume_template(self):
+ target_volume = MOCK_volume(MOCK_volume_name2, MOCK_volume_id2,
+ MOCK_volume_provider_location2)
+ source_volume = MOCK_volume(MOCK_volume_name3, MOCK_volume_id3,
+ MOCK_volume_provider_location3)
+ result = self.driver.create_cloned_volume(target_volume,
+ source_volume)
+ self.assertTrue(CALLED['create_from_template'] ==
+ MOCK_vdisk_guid3,
+ 'Wrong params')
+ self.assertTrue(result['provider_location'] ==
+ MOCK_volume_provider_location2,
+ 'Wrong result %s' % result['provider_location'])
+
+ def test_create_cloned_volume_volume(self):
+ target_volume = MOCK_volume(MOCK_volume_name2, MOCK_volume_id2,
+ MOCK_volume_provider_location2)
+ source_volume = MOCK_volume(MOCK_volume_name, MOCK_volume_id,
+ MOCK_volume_provider_location)
+ result = self.driver.create_cloned_volume(target_volume,
+ source_volume)
+ self.assertTrue(CALLED['create_snapshot'] ==
+ MOCK_vdisk_guid,
+ 'Wrong params')
+ self.assertTrue(CALLED['clone_volume'] ==
+ MOCK_vdisk_guid,
+ 'Wrong params')
+ self.assertTrue(result['provider_location'] ==
+ MOCK_volume_provider_location2,
+ 'Wrong result %s' % result['provider_location'])
+
+ def test_create_snapshot(self):
+ snapshot = MOCK_snapshot()
+ self.driver.create_snapshot(snapshot)
+ self.assertTrue(CALLED['create_snapshot'] == MOCK_vdisk_guid,
+ 'Wrong params')
+
+ def test_delete_snapshot(self):
+ snapshot = MOCK_snapshot()
+ self.driver.delete_snapshot(snapshot)
+ self.assertTrue(CALLED['delete_snapshot'] == MOCK_vdisk_guid,
+ 'Wrong params')
+
+ def create_volume_from_snapshot(self):
+ new_volume = MOCK_volume(MOCK_volume_name2, MOCK_volume_id2,
+ MOCK_volume_provider_location2)
+ snapshot = MOCK_snapshot()
+ result = self.driver.create_volume_from_snapshot(new_volume, snapshot)
+ self.assertTrue(CALLED['clone_volume'] ==
+ MOCK_vdisk_guid,
+ 'Wrong params')
+ self.assertTrue(result['provider_location'] ==
+ MOCK_volume_provider_location2,
+ 'Wrong result %s' % result['provider_location'])
--- /dev/null
+# Copyright 2015 CloudFounders NV
+#
+# 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.
+
+"""
+OpenStack Cinder driver - interface to Open vStorage
+- uses Open vStorage library calls (VDiskController)
+- uses Cinder logging
+"""
+
+import socket
+import time
+
+# External libs: Open vStorage
+try:
+ from ovs.dal.hybrids import vdisk as vdiskhybrid
+ from ovs.dal.lists import pmachinelist
+ from ovs.dal.lists import vdisklist
+ from ovs.dal.lists import vpoollist
+ from ovs.lib import vdisk as vdisklib
+except ImportError:
+ # CI Testing, all external libs are mocked
+ # or using the driver without all required libs
+ vdiskhybrid = None
+ pmachinelist = None
+ vdisklist = None
+ vpoollist = None
+ vdisklib = None
+
+from oslo_config import cfg
+import six
+
+from cinder import exception
+from cinder.i18n import _
+from cinder.image import image_utils
+from cinder.openstack.common import log as logging
+from cinder.volume import driver
+
+
+LOG = logging.getLogger(__name__)
+HELP = 'Vpool to use for volumes - backend is defined by vpool not by us.'
+OPTS = [cfg.StrOpt('vpool_name',
+ default = '',
+ help = HELP)]
+
+CONF = cfg.CONF
+CONF.register_opts(OPTS)
+
+
+class OVSVolumeDriver(driver.VolumeDriver):
+ """Open vStorage Volume Driver plugin for Cinder"""
+ VERSION = '1.0.5'
+
+ def __init__(self, *args, **kwargs):
+ """Init: args, kwargs pass through;
+ Options come from CONF
+ """
+ super(OVSVolumeDriver, self).__init__(*args, **kwargs)
+ LOG.debug('INIT %s %s %s ', CONF.vpool_name, str(args),
+ str(kwargs))
+ self.configuration.append_config_values(OPTS)
+ self._vpool_name = self.configuration.vpool_name
+ if vpoollist is not None:
+ self._vp = vpoollist.VPoolList.get_vpool_by_name(self._vpool_name)
+ else:
+ self._vp = None
+
+ # Volume operations
+
+ def initialize_connection(self, volume, connector):
+ """Allow connection to connector and return connection info.
+ Volume is a .raw file on a virtual filesystem.
+ No specific action required, connection is allowed based
+ on POSIX permissions
+ """
+
+ return {'driver_volume_type': 'local',
+ 'data': {'vpoolname': self._vpool_name,
+ 'device_path': volume.provider_location}}
+
+ def create_volume(self, volume):
+ """Creates a volume.
+ Called on "cinder create ..." or "nova volume-create ..."
+ :param volume: volume reference (sqlalchemy Model)
+ """
+
+ hostname = str(volume.host)
+ name = volume.display_name
+ if not name:
+ name = volume.name
+ mountpoint = self._get_hostname_mountpoint(hostname)
+ location = '{}/{}.raw'.format(mountpoint, name)
+ size = volume.size
+
+ LOG.debug('DO_CREATE_VOLUME %s %s', location, size)
+ vdisklib.VDiskController.create_volume(location = location,
+ size = size)
+ volume['provider_location'] = location
+
+ try:
+ ovs_disk = self._find_ovs_model_disk_by_location(location,
+ hostname)
+ except exception.VolumeBackendAPIException:
+ vdisklib.VDiskController.delete_volume(location = location)
+ raise
+
+ ovs_disk.cinder_id = volume.id
+ ovs_disk.name = name
+ ovs_disk.save()
+ return {'provider_location': volume['provider_location']}
+
+ def delete_volume(self, volume):
+ """Deletes a logical volume.
+ Called on "cinder delete ... "
+ :param volume: volume reference (sqlalchemy Model)
+ """
+ location = volume.provider_location
+ if location is not None:
+ LOG.debug('DO_DELETE_VOLUME %s', location)
+ vdisklib.VDiskController.delete_volume(location = location)
+
+ def copy_image_to_volume(self, context, volume, image_service, image_id):
+ """Copy image to volume
+ Called on "nova volume-create --image-id ..."
+ or "cinder create --image-id"
+ Downloads image from glance server into local .raw
+ :param volume: volume reference (sqlalchemy Model)
+ """
+ LOG.debug("CP_IMG_TO_VOL %s %s", image_service, image_id)
+
+ name = volume.display_name
+ if not name:
+ name = volume.name
+ volume.display_name = volume.name
+
+ # Downloading from an existing image
+ destination_path = volume.provider_location
+ if destination_path:
+ LOG.debug('CP_IMG_TO_VOL Deleting existing empty raw file %s ',
+ destination_path)
+ vdisklib.VDiskController.delete_volume(location = destination_path)
+ LOG.debug('CP_IMG_TO_VOL Downloading image to %s',
+ destination_path)
+ image_utils.fetch_to_raw(context,
+ image_service,
+ image_id,
+ destination_path,
+ '1M',
+ size = volume['size'],
+ run_as_root = False)
+ LOG.debug('CP_IMG_TO_VOL Resizing volume to size %s',
+ volume['size'])
+ self.extend_volume(volume = volume, size_gb = volume['size'])
+
+ ovs_disk = self._find_ovs_model_disk_by_location(
+ volume.provider_location, str(volume.host))
+ ovs_disk.name = name
+ ovs_disk.save()
+
+ def copy_volume_to_image(self, context, volume, image_service, image_meta):
+ """Copy the volume to the specified image.
+ Called on "cinder upload-to-image ...volume... ...image-name..."
+ :param volume: volume reference (sqlalchemy Model)
+ """
+ LOG.debug("CP_VOL_TO_IMG %s %s", image_service, image_meta)
+ super(OVSVolumeDriver, self).copy_volume_to_image(
+ context, volume, image_service, image_meta)
+
+ def create_cloned_volume(self, volume, src_vref):
+ """Create a cloned volume from another volume.
+ Called on "cinder create --source-volid ... "
+
+ :param volume: volume reference - target volume (sqlalchemy Model)
+ :param src_vref: volume reference - source volume (sqlalchemy Model)
+
+ OVS: Create clone from template if the source is a template
+ Create volume from snapshot if the source is a volume
+ - create snapshot of source volume if it doesn't have snapshots
+ """
+
+ mountpoint = self._get_hostname_mountpoint(str(volume.host))
+ name = volume.display_name
+ if not name:
+ name = volume.name
+ volume.display_name = volume.name
+
+ pmachineguid = self._find_ovs_model_pmachine_guid_by_hostname(
+ six.text_type(volume.host))
+
+ # Source
+ source_ovs_disk = self._find_ovs_model_disk_by_location(
+ str(src_vref.provider_location), src_vref.host)
+ if source_ovs_disk.info['object_type'] == 'TEMPLATE':
+ LOG.debug('[CREATE_FROM_TEMPLATE] VDisk %s is a template',
+ source_ovs_disk.devicename)
+
+ # Cloning from a template
+ LOG.debug('[CREATE FROM TEMPLATE] ovs_disk %s ',
+ source_ovs_disk.devicename)
+
+ disk_meta = vdisklib.VDiskController.create_from_template(
+ diskguid = source_ovs_disk.guid,
+ machinename = "",
+ devicename = str(name),
+ pmachineguid = pmachineguid,
+ machineguid = None,
+ storagedriver_guid = None)
+ volume['provider_location'] = '{}{}'.format(
+ mountpoint, disk_meta['backingdevice'])
+ LOG.debug('[CREATE FROM TEMPLATE] New volume %s',
+ volume['provider_location'])
+ vdisk = vdiskhybrid.VDisk(disk_meta['diskguid'])
+ vdisk.cinder_id = volume.id
+ vdisk.name = name
+ LOG.debug('[CREATE FROM TEMPLATE] Updating meta %s %s',
+ volume.id, name)
+ vdisk.save()
+ else:
+ LOG.debug('[THIN CLONE] VDisk %s is not a template',
+ source_ovs_disk.devicename)
+ # We do not support yet full volume clone
+ # - requires "emancipate" functionality
+ # So for now we'll take a snapshot
+ # (or the latest snapshot existing) and clone from that snapshot
+ if not len(source_ovs_disk.snapshots):
+ metadata = {'label': "Cinder clone snapshot {0}".format(name),
+ 'is_consistent': False,
+ 'timestamp': time.time(),
+ 'machineguid': source_ovs_disk.vmachine_guid,
+ 'is_automatic': False}
+
+ LOG.debug('CREATE_SNAP %s %s', name, str(metadata))
+ snapshotid = vdisklib.VDiskController.create_snapshot(
+ diskguid = source_ovs_disk.guid,
+ metadata = metadata,
+ snapshotid = None)
+ LOG.debug('CREATE_SNAP OK')
+
+ else:
+ snapshotid = source_ovs_disk.snapshots[-1]['guid']
+ LOG.debug('[CREATE CLONE FROM SNAP] %s ', snapshotid)
+
+ disk_meta = vdisklib.VDiskController.clone(
+ diskguid = source_ovs_disk.guid,
+ snapshotid = snapshotid,
+ devicename = str(name),
+ pmachineguid = pmachineguid,
+ machinename = "",
+ machineguid=None)
+ volume['provider_location'] = '{}{}'.format(
+ mountpoint, disk_meta['backingdevice'])
+
+ LOG.debug('[CLONE FROM SNAP] Meta: %s', str(disk_meta))
+ LOG.debug('[CLONE FROM SNAP] New volume %s',
+ volume['provider_location'])
+ vdisk = vdiskhybrid.VDisk(disk_meta['diskguid'])
+ vdisk.cinder_id = volume.id
+ vdisk.name = name
+ vdisk.save()
+ return {'provider_location': volume['provider_location'],
+ 'display_name': volume['display_name']}
+
+ # Volumedriver stats
+
+ def get_volume_stats(self, refresh=False):
+ """Get volumedriver stats
+ Refresh not implemented
+ """
+ data = {}
+ data['volume_backend_name'] = self._vpool_name
+ data['vendor_name'] = 'Open vStorage'
+ data['driver_version'] = self.VERSION
+ data['storage_protocol'] = 'OVS'
+
+ data['total_capacity_gb'] = 'unknown'
+ data['free_capacity_gb'] = 'unknown'
+ data['reserved_percentage'] = 0
+ data['QoS_support'] = False
+ return data
+
+ # Snapshots operations
+
+ def create_snapshot(self, snapshot):
+ """Creates a snapshot.
+ Called on "nova image-create " or "cinder snapshot-create "
+ :param snapshot: snapshot reference (sqlalchemy Model)
+ """
+ volume = snapshot.volume
+
+ hostname = volume.host
+ location = volume.provider_location
+ ovs_disk = self._find_ovs_model_disk_by_location(location, hostname)
+ metadata = {'label': "{0} (OpenStack)".format(snapshot.display_name),
+ 'is_consistent': False,
+ 'timestamp': time.time(),
+ 'machineguid': ovs_disk.vmachine_guid,
+ 'is_automatic': False}
+
+ LOG.debug('CREATE_SNAP %s %s', snapshot.display_name,
+ str(metadata))
+ vdisklib.VDiskController.create_snapshot(diskguid = ovs_disk.guid,
+ metadata = metadata,
+ snapshotid =
+ str(snapshot.id))
+ LOG.debug('CREATE_SNAP OK')
+
+ def delete_snapshot(self, snapshot):
+ """Deletes a snapshot.
+ :param snapshot: snapshot reference (sqlalchemy Model)
+ """
+ volume = snapshot.volume
+ hostname = volume.host
+ location = volume.provider_location
+
+ ovs_disk = self._find_ovs_model_disk_by_location(location, hostname)
+ LOG.debug('DELETE_SNAP %s', snapshot.id)
+ vdisklib.VDiskController.delete_snapshot(diskguid = ovs_disk.guid,
+ snapshotid =
+ str(snapshot.id))
+ LOG.debug('DELETE_SNAP OK')
+
+ def create_volume_from_snapshot(self, volume, snapshot):
+ """Creates a volume from a snapshot.
+ Called on "cinder create --snapshot-id ..."
+ :param snapshot: snapshot reference (sqlalchemy Model)
+ :param volume: volume reference (sqlalchemy Model)
+
+ Volume here is just a ModelObject, it doesn't exist physically,
+ it will be created by OVS.
+ Diskguid to be passed to the clone method is the ovs diskguid of the
+ parent of the snapshot with snapshot.id
+
+ OVS: Clone from arbitrary volume,
+ requires volumedriver 3.6 release > 15.08.2014
+ """
+
+ mountpoint = self._get_hostname_mountpoint(str(volume.host))
+ ovs_snap_disk = self._find_ovs_model_disk_by_snapshot_id(snapshot.id)
+ devicename = volume.display_name
+ if not devicename:
+ devicename = volume.name
+ pmachineguid = self._find_ovs_model_pmachine_guid_by_hostname(
+ six.text_type(volume.host))
+
+ LOG.debug('[CLONE FROM SNAP] %s %s %s %s',
+ ovs_snap_disk.guid, snapshot.id, devicename,
+ pmachineguid)
+ disk_meta = vdisklib.VDiskController.clone(
+ diskguid = ovs_snap_disk.guid,
+ snapshotid = snapshot.id,
+ devicename = devicename,
+ pmachineguid = pmachineguid,
+ machinename = "",
+ machineguid=None)
+ volume['provider_location'] = '{}{}'.format(
+ mountpoint, disk_meta['backingdevice'])
+
+ LOG.debug('[CLONE FROM SNAP] Meta: %s', six.text_type(disk_meta))
+ LOG.debug('[CLONE FROM SNAP] New volume %s',
+ volume['provider_location'])
+ vdisk = vdiskhybrid.VDisk(disk_meta['diskguid'])
+ vdisk.cinder_id = volume.id
+ vdisk.name = devicename
+ vdisk.save()
+
+ return {'provider_location': volume['provider_location'],
+ 'display_name': volume['display_name']}
+
+ # Attach/detach volume to instance/host
+
+ def attach_volume(self, context, volume, instance_uuid, host_name,
+ mountpoint):
+ """Callback for volume attached to instance or host."""
+ pass
+
+ def detach_volume(self, context, volume):
+ """Callback for volume detached."""
+ pass
+
+ # Extend
+
+ def extend_volume(self, volume, size_gb):
+ """Extend volume to new size size_gb"""
+ LOG.debug('EXTEND_VOL Size %s', size_gb)
+ location = volume.provider_location
+ if location is not None:
+ LOG.debug('DO_EXTEND_VOLUME %s', location)
+ vdisklib.VDiskController.extend_volume(location = location,
+ size = size_gb)
+
+ # Prevent NotImplementedError being raised
+ # Not actually implemented, these actions do not make sense for this driver
+
+ def create_export(self, context, volume):
+ """Exports the volume.
+ The volume is a .raw file on a virtual filesystem.
+ Nothing to export.
+ """
+ pass
+
+ def remove_export(self, context, volume):
+ """Removes an export for a volume.
+ The volume is a .raw file on a virtual filesystem.
+ Removed when delete is called.
+ """
+ pass
+
+ def ensure_export(self, context, volume):
+ """Synchronously recreates an export for a volume.
+ The volume is a .raw file on a virtual filesystem.
+ Nothing to export.
+ """
+ pass
+
+ def terminate_connection(self, volume, connector, force):
+ """Disallow connection from connector
+ The volume is a .raw file on a virtual filesystem.
+ Connection is always allowed based on POSIX permissions.
+ """
+ LOG.debug('TERM_CONN %s %s ', six.text_type(connector), force)
+
+ def check_for_setup_error(self):
+ """Validate driver setup"""
+ if (vdiskhybrid is None or pmachinelist is None or vdisklist is None or
+ vpoollist is None or vdisklib is None):
+ msg = (_('Open vStorage libraries not found'))
+ LOG.exception(msg)
+ raise exception.VolumeBackendAPIException(data=msg)
+
+ def do_setup(self, context):
+ """Any initialization the volume driver does while starting"""
+ pass
+
+ # Internal
+ def _get_real_hostname(self, hostname):
+ LOG.debug('[_GET REAL HOSTNAME] Hostname %s', hostname)
+ if not hostname:
+ return socket.gethostname()
+ if "#" in hostname:
+ hostname, backend_name = hostname.split('#')
+ if "@" in hostname:
+ hostname, driver = hostname.split('@')
+ return hostname
+ return hostname
+
+ def _get_hostname_mountpoint(self, hostname):
+ """Find OVS vsr mountpoint for self._vp and hostname
+ :return mountpoint: string, mountpoint
+ """
+ hostname = self._get_real_hostname(hostname)
+ LOG.debug('[_GET HOSTNAME MOUNTPOINT] Hostname %s', hostname)
+ if self._vp is None:
+ msg = (_('Open vStorage libraries not found'))
+ raise exception.VolumeBackendAPIException(data=msg)
+ storagedrivers = [vsr for vsr in self._vp.storagedrivers
+ if str(vsr.storagerouter.name) ==
+ str(hostname)]
+ if len(storagedrivers) == 1:
+ LOG.debug('[_GET HOSTNAME MOUNTPOINT] Mountpoint %s',
+ storagedrivers[0].mountpoint)
+ return six.text_type(storagedrivers[0].mountpoint)
+ elif not storagedrivers:
+ msg = (_('No vsr mountpoint found for Vpool %(vpool_name)s'
+ 'and hostname %(hostname)s')
+ % {'vpool_name': self._vpool_name, 'hostname': hostname})
+ LOG.exception(msg)
+ raise exception.VolumeBackendAPIException(data=msg)
+
+ def _find_ovs_model_disk_by_location(self, location, hostname, retry=3,
+ timeout=3):
+ """Find OVS disk object based on location and hostname
+ :return VDisk: OVS DAL model object
+ """
+ hostname = self._get_real_hostname(hostname)
+ LOG.debug('[_FIND OVS DISK] Location %s, hostname %s',
+ location, hostname)
+ attempt = 0
+ while attempt <= retry:
+ for vd in vdisklist.VDiskList.get_vdisks():
+ if vd.vpool:
+ for vsr in vd.vpool.storagedrivers:
+ if vsr.storagerouter.name == hostname:
+ _location = "{0}/{1}".format(vsr.mountpoint,
+ vd.devicename)
+ if _location == location:
+ LOG.debug('Location %s Disk found %s',
+ (location, vd.guid))
+ disk = vdiskhybrid.VDisk(vd.guid)
+ return disk
+ msg = 'NO RESULT Attempt %s timeout %s max attempts %s'
+ LOG.debug(msg, attempt, timeout, retry)
+ if timeout:
+ time.sleep(timeout)
+ attempt += 1
+ msg = (_('No disk found for location %s') % location)
+ LOG.exception(msg)
+ raise exception.VolumeBackendAPIException(data=msg)
+
+ def _find_ovs_model_pmachine_guid_by_hostname(self, hostname):
+ """Find OVS pmachine guid based on storagerouter name
+ :return guid: GUID
+ """
+ hostname = self._get_real_hostname(hostname)
+ LOG.debug('[_FIND OVS PMACHINE] Hostname %s' % (hostname))
+ mapping = [(pm.guid, six.text_type(sr.name))
+ for pm in pmachinelist.PMachineList.get_pmachines()
+ for sr in pm.storagerouters]
+ for item in mapping:
+ if item[1] == str(hostname):
+ msg = 'Found pmachineguid %s for Hostname %s'
+ LOG.debug(msg, item[0], hostname)
+ return item[0]
+ msg = (_('No PMachine guid found for Hostname %s'), hostname)
+ LOG.exception(msg)
+ raise exception.VolumeBackendAPIException(data=msg)
+
+ def _find_ovs_model_disk_by_snapshot_id(self, snapshotid):
+ """Find OVS disk object based on snapshot id
+ :return VDisk: OVS DAL model object
+ """
+ LOG.debug('[_FIND OVS DISK] Snapshotid %s' % snapshotid)
+ for disk in vdisklist.VDiskList.get_vdisks():
+ snaps_guid = [s['guid'] for s in disk.snapshots]
+ if str(snapshotid) in snaps_guid:
+ LOG.debug('[_FIND OVS DISK] Snapshot id %s Disk found %s',
+ (snapshotid, disk))
+ return disk
+ msg = (_('No disk found for snapshotid %s'), snapshotid)
+ LOG.exception(msg)
+ raise exception.VolumeBackendAPIException(data=msg)
Code Review / openstack-build / cinder-build.git / commitdiff