def test_brick_get_connector(self):
root_helper = utils.get_root_helper()
self.mox.StubOutClassWithMocks(connector, "ISCSIConnector")
connector.ISCSIConnector(
execute=putils.execute, driver=None, root_helper=root_helper, use_multipath=False, device_scan_attempts=3
)
self.mox.StubOutClassWithMocks(connector, "FibreChannelConnector")
connector.FibreChannelConnector(
execute=putils.execute, driver=None, root_helper=root_helper, use_multipath=False, device_scan_attempts=3
)
self.mox.StubOutClassWithMocks(connector, "AoEConnector")
connector.AoEConnector(execute=putils.execute, driver=None, root_helper=root_helper, device_scan_attempts=3)
self.mox.StubOutClassWithMocks(connector, "LocalConnector")
connector.LocalConnector(execute=putils.execute, driver=None, root_helper=root_helper, device_scan_attempts=3)
self.mox.ReplayAll()
utils.brick_get_connector("iscsi")
utils.brick_get_connector("fibre_channel")
utils.brick_get_connector("aoe")
utils.brick_get_connector("local")
self.mox.VerifyAll()
def test_brick_get_connector(self):
root_helper = utils.get_root_helper()
self.mox.StubOutClassWithMocks(connector, 'ISCSIConnector')
connector.ISCSIConnector(execute=putils.execute,
driver=None,
root_helper=root_helper,
use_multipath=False)
self.mox.StubOutClassWithMocks(connector, 'FibreChannelConnector')
connector.FibreChannelConnector(execute=putils.execute,
driver=None,
root_helper=root_helper,
use_multipath=False)
self.mox.StubOutClassWithMocks(connector, 'AoEConnector')
connector.AoEConnector(execute=putils.execute,
driver=None,
root_helper=root_helper)
self.mox.StubOutClassWithMocks(connector, 'LocalConnector')
connector.LocalConnector(execute=putils.execute,
driver=None,
root_helper=root_helper)
self.mox.ReplayAll()
utils.brick_get_connector('iscsi')
utils.brick_get_connector('fibre_channel')
utils.brick_get_connector('aoe')
utils.brick_get_connector('local')
self.mox.VerifyAll()
def setUp(self):
super(CoraidDriverImageTestCases, self).setUp()
self.fake_dev_path = '/dev/ether/fake_dev'
self.fake_connection = {'driver_volume_type': 'aoe',
'data': {'target_shelf': fake_shelf,
'target_lun': fake_lun}}
self.fake_volume_info = {
'shelf': self.fake_connection['data']['target_shelf'],
'lun': self.fake_connection['data']['target_lun']}
self.mox.StubOutWithMock(self.driver, 'initialize_connection')
self.driver.initialize_connection(fake_volume, {})\
.AndReturn(self.fake_connection)
self.mox.StubOutWithMock(self.driver, 'terminate_connection')
self.driver.terminate_connection(fake_volume, mox.IgnoreArg(),
force=False).AndReturn(None)
root_helper = 'sudo cinder-rootwrap /etc/cinder/rootwrap.conf'
self.mox.StubOutWithMock(connector, 'get_connector_properties')
connector.get_connector_properties(root_helper,
CONF.my_ip).\
AndReturn({})
self.mox.StubOutWithMock(utils, 'brick_get_connector')
aoe_initiator = self.mox.CreateMockAnything()
utils.brick_get_connector('aoe',
device_scan_attempts=3,
use_multipath=False,
conn=mox.IgnoreArg()).\
AndReturn(aoe_initiator)
aoe_initiator\
.connect_volume(self.fake_connection['data'])\
.AndReturn({'path': self.fake_dev_path})
aoe_initiator.check_valid_device(self.fake_dev_path)\
.AndReturn(True)
aoe_initiator.disconnect_volume(
{'target_shelf': self.fake_volume_info['shelf'],
'target_lun': self.fake_volume_info['lun']}, mox.IgnoreArg())
def _attach_volume(self, context, volume, properties, remote=False):
"""Attach the volume."""
if remote:
rpcapi = volume_rpcapi.VolumeAPI()
conn = rpcapi.initialize_connection(context, volume, properties)
else:
conn = self.initialize_connection(volume, properties)
# Use Brick's code to do attach/detach
use_multipath = self.configuration.use_multipath_for_image_xfer
device_scan_attempts = self.configuration.num_volume_device_scan_tries
protocol = conn['driver_volume_type']
connector = utils.brick_get_connector(protocol,
use_multipath=use_multipath,
device_scan_attempts=
device_scan_attempts,
conn=conn)
device = connector.connect_volume(conn['data'])
host_device = device['path']
if not connector.check_valid_device(host_device):
raise exception.DeviceUnavailable(path=host_device,
reason=(_("Unable to access "
"the backend storage "
"via the path "
"%(path)s.") %
{'path': host_device}))
return {'conn': conn, 'device': device, 'connector': connector}
def test_brick_get_connector(self, mock_helper, mock_factory):
output = utils.brick_get_connector('protocol')
mock_helper.assert_called_once_with()
self.assertEqual(mock_factory.return_value, output)
mock_factory.assert_called_once_with(
'protocol', mock_helper.return_value, driver=None,
execute=putils.execute, use_multipath=False,
device_scan_attempts=3)
def _attach_volume(self, context, volume, properties, remote=False):
"""Attach the volume."""
if remote:
# Call remote manager's initialize_connection which includes
# driver's create_export and initialize_connection
rpcapi = volume_rpcapi.VolumeAPI()
conn = rpcapi.initialize_connection(context, volume, properties)
else:
# Call local driver's create_export and initialize_connection.
# NOTE(avishay) This is copied from the manager's code - need to
# clean this up in the future.
model_update = None
try:
LOG.debug(("Volume %s: creating export"), volume["id"])
model_update = self.create_export(context, volume)
if model_update:
volume = self.db.volume_update(context, volume["id"], model_update)
except exception.CinderException as ex:
if model_update:
LOG.exception(
_("Failed updating model of volume " "%(volume_id)s with driver provided model " "%(model)s")
% {"volume_id": volume["id"], "model": model_update}
)
raise exception.ExportFailure(reason=ex)
try:
conn = self.initialize_connection(volume, properties)
except Exception as err:
try:
err_msg = _("Unable to fetch connection information from " "backend: %(err)s") % {"err": err}
LOG.error(err_msg)
LOG.debug("Cleaning up failed connect initialization.")
self.remove_export(context, volume)
except Exception as ex:
ex_msg = _("Error encountered during cleanup " "of a failed attach: %(ex)s") % {"ex": ex}
LOG.error(err_msg)
raise exception.VolumeBackendAPIException(data=ex_msg)
raise exception.VolumeBackendAPIException(data=err_msg)
# Use Brick's code to do attach/detach
use_multipath = self.configuration.use_multipath_for_image_xfer
device_scan_attempts = self.configuration.num_volume_device_scan_tries
protocol = conn["driver_volume_type"]
connector = utils.brick_get_connector(
protocol, use_multipath=use_multipath, device_scan_attempts=device_scan_attempts, conn=conn
)
device = connector.connect_volume(conn["data"])
host_device = device["path"]
if not connector.check_valid_device(host_device):
raise exception.DeviceUnavailable(
path=host_device,
reason=(
_("Unable to access " "the backend storage " "via the path " "%(path)s.") % {"path": host_device}
),
)
return {"conn": conn, "device": device, "connector": connector}
def setUp(self):
super(CoraidDriverImageTestCases, self).setUp()
self.fake_dev_path = "/dev/ether/fake_dev"
self.fake_connection = {
"driver_volume_type": "aoe",
"data": {"target_shelf": fake_shelf, "target_lun": fake_lun},
}
self.fake_volume_info = {
"shelf": self.fake_connection["data"]["target_shelf"],
"lun": self.fake_connection["data"]["target_lun"],
}
self.mox.StubOutWithMock(self.driver, "initialize_connection")
self.driver.initialize_connection(fake_volume, {}).AndReturn(self.fake_connection)
self.mox.StubOutWithMock(self.driver, "terminate_connection")
self.driver.terminate_connection(fake_volume, mox.IgnoreArg(), force=False).AndReturn(None)
root_helper = "sudo cinder-rootwrap /etc/cinder/rootwrap.conf"
self.mox.StubOutWithMock(connector, "get_connector_properties")
connector.get_connector_properties(root_helper, CONF.my_ip).AndReturn({})
self.mox.StubOutWithMock(utils, "brick_get_connector")
aoe_initiator = self.mox.CreateMockAnything()
utils.brick_get_connector("aoe", device_scan_attempts=3, use_multipath=False, conn=mox.IgnoreArg()).AndReturn(
aoe_initiator
)
aoe_initiator.connect_volume(self.fake_connection["data"]).AndReturn({"path": self.fake_dev_path})
aoe_initiator.check_valid_device(self.fake_dev_path).AndReturn(True)
aoe_initiator.disconnect_volume(
{"target_shelf": self.fake_volume_info["shelf"], "target_lun": self.fake_volume_info["lun"]},
mox.IgnoreArg(),
)
def _connect_device(self, conn):
"""Establish connection to device."""
use_multipath = CONF.use_multipath_for_image_xfer
device_scan_attempts = CONF.num_volume_device_scan_tries
protocol = conn["driver_volume_type"]
connector = utils.brick_get_connector(
protocol, use_multipath=use_multipath, device_scan_attempts=device_scan_attempts, conn=conn
)
vol_handle = connector.connect_volume(conn["data"])
return {"conn": conn, "device": vol_handle, "connector": connector}
def _is_volume_attached(self, volume_id):
if not volume_id:
return False
conn = {"driver_volume_type": "HUAWEISDSHYPERVISOR", "data": {"volume_id": "volume-" + volume_id}}
use_multipath = self.configuration.use_multipath_for_image_xfer
device_scan_attempts = self.configuration.num_volume_device_scan_tries
protocol = conn["driver_volume_type"]
connector = utils.brick_get_connector(
protocol, use_multipath=use_multipath, device_scan_attempts=device_scan_attempts, conn=conn
)
is_volume_attached = connector.is_volume_connected(conn["data"]["volume_id"])
return is_volume_attached
def _connect_device(self, conn):
"""Establish connection to device."""
use_multipath = CONF.use_multipath_for_image_xfer
device_scan_attempts = CONF.num_volume_device_scan_tries
protocol = conn['driver_volume_type']
connector = utils.brick_get_connector(
protocol,
use_multipath=use_multipath,
device_scan_attempts=device_scan_attempts,
conn=conn)
vol_handle = connector.connect_volume(conn['data'])
return {'conn': conn, 'device': vol_handle, 'connector': connector}
def _connect_target(self, container):
connector = None
try:
sis, iqn, portal = self._get_sis_iqn_portal(container)
conn = {'driver_volume_type': 'iscsi',
'data': {
'target_discovered': False,
'target_iqn': iqn,
'target_portal': portal,
'target_lun': 0,
'volume_id': None,
'discard': False}}
connector = utils.brick_get_connector(
conn['driver_volume_type'],
use_multipath=False,
device_scan_attempts=10,
conn=conn)
# Setup ACL
initiator = connector.get_initiator()
self._register_acl(container, initiator, sis)
# Attach Target
attach_info = {}
attach_info['target_portal'] = portal
attach_info['target_iqn'] = iqn
attach_info['target_lun'] = 0
retries = 10
while True:
try:
attach_info.update(
connector.connect_volume(conn['data']))
break
except brick_exception.FailedISCSITargetPortalLogin:
retries -= 1
if not retries:
LOG.error("Could not log into portal before end of "
"polling period")
raise
LOG.debug("Failed to login to portal, retrying")
eventlet.sleep(2)
device_path = attach_info['path']
yield device_path
finally:
# Close target connection
if connector:
# Best effort disconnection
try:
connector.disconnect_volume(attach_info, attach_info)
except Exception:
pass
def _attch(self, conn):
"""
Creates the properties dict required by the brick utils
to attache the volume.
:param conn: connection information retrived from SL/iSCSI tools.
"""
protocol = conn["driver_volume_type"]
LOG.debug("Attaching for protocol '%s'" % protocol)
connector = utils.brick_get_connector(protocol)
device = connector.connect_volume(conn["data"])
host_device = device["path"]
if not connector.check_valid_device(host_device):
raise exception.InvalidResults("Unable to get valid device %s" % host_device)
return {"conn": conn, "device": device, "connector": connector}
def _is_volume_attached(self, volume_id):
if not volume_id:
return False
conn = {'driver_volume_type': 'HUAWEISDSHYPERVISOR',
'data': {'volume_id': 'volume-' + volume_id}}
use_multipath = self.configuration.use_multipath_for_image_xfer
device_scan_attempts = self.configuration.num_volume_device_scan_tries
protocol = conn['driver_volume_type']
connector = utils.brick_get_connector(protocol,
use_multipath=use_multipath,
device_scan_attempts=
device_scan_attempts,
conn=conn)
is_volume_attached = connector.is_volume_connected(
conn['data']['volume_id'])
return is_volume_attached
def _remove_device(self, properties, device):
LOG.debug("enter: _remove_device")
if not properties or not device:
LOG.warning(_LW("_remove_device: invalid properties or device."))
return
use_multipath = self.configuration.use_multipath_for_image_xfer
device_scan_attempts = self.configuration.num_volume_device_scan_tries
protocol = properties["driver_volume_type"]
connector = utils.brick_get_connector(
protocol, use_multipath=use_multipath, device_scan_attempts=device_scan_attempts, conn=properties
)
connector.disconnect_volume(properties["data"], device)
LOG.debug("leave: _remove_device")
def _scan_device(self, properties):
LOG.debug("enter: _scan_device")
use_multipath = self.configuration.use_multipath_for_image_xfer
device_scan_attempts = self.configuration.num_volume_device_scan_tries
protocol = properties["driver_volume_type"]
connector = utils.brick_get_connector(
protocol, use_multipath=use_multipath, device_scan_attempts=device_scan_attempts, conn=properties
)
device = connector.connect_volume(properties["data"])
host_device = device["path"]
if not connector.check_valid_device(host_device):
msg = _("Unable to access the backend storage " "via the path %(path)s.") % {"path": host_device}
raise exception.VolumeBackendAPIException(data=msg)
LOG.debug("leave: _scan_device")
return device
def _remove_device(self, properties, device):
LOG.debug('enter: _remove_device')
if not properties or not device:
LOG.warning('_remove_device: invalid properties or device.')
return
use_multipath = self.configuration.use_multipath_for_image_xfer
device_scan_attempts = self.configuration.num_volume_device_scan_tries
protocol = properties['driver_volume_type']
connector = utils.brick_get_connector(
protocol,
use_multipath=use_multipath,
device_scan_attempts=device_scan_attempts,
conn=properties)
connector.disconnect_volume(properties['data'], device)
LOG.debug('leave: _remove_device')
def _attach_context(self, connection):
use_multipath = self.configuration.use_multipath_for_image_xfer
device_scan_attempts = self.configuration.num_volume_device_scan_tries
protocol = connection['driver_volume_type']
connector = utils.brick_get_connector(
protocol,
use_multipath=use_multipath,
device_scan_attempts=device_scan_attempts,
conn=connection)
attach_info = None
try:
attach_info = self._connect_device(connection)
yield attach_info
except exception.DeviceUnavailable as exc:
attach_info = exc.kwargs.get('attach_info', None)
raise
finally:
if attach_info:
connector.disconnect_volume(attach_info['conn']['data'],
attach_info['device'])
def _is_volume_attached(self, volume_id):
if not volume_id:
return False
conn = {
'driver_volume_type': 'HUAWEISDSHYPERVISOR',
'data': {
'volume_id': 'volume-' + volume_id
}
}
use_multipath = self.configuration.use_multipath_for_image_xfer
device_scan_attempts = self.configuration.num_volume_device_scan_tries
protocol = conn['driver_volume_type']
connector = utils.brick_get_connector(
protocol,
use_multipath=use_multipath,
device_scan_attempts=device_scan_attempts,
conn=conn)
is_volume_attached = connector.is_volume_connected(
conn['data']['volume_id'])
return is_volume_attached
def _attach_context(self, connection):
use_multipath = self.configuration.use_multipath_for_image_xfer
device_scan_attempts = self.configuration.num_volume_device_scan_tries
protocol = connection['driver_volume_type']
connector = utils.brick_get_connector(
protocol,
use_multipath=use_multipath,
device_scan_attempts=device_scan_attempts,
conn=connection)
attach_info = None
try:
attach_info = self._connect_device(connection)
yield attach_info
except exception.DeviceUnavailable as exc:
attach_info = exc.kwargs.get('attach_info', None)
raise
finally:
if attach_info:
connector.disconnect_volume(attach_info['conn']['data'],
attach_info['device'])
def _scan_device(self, properties):
LOG.debug('enter: _scan_device')
use_multipath = self.configuration.use_multipath_for_image_xfer
device_scan_attempts = self.configuration.num_volume_device_scan_tries
protocol = properties['driver_volume_type']
connector = utils.brick_get_connector(protocol,
use_multipath=use_multipath,
device_scan_attempts=
device_scan_attempts,
conn=properties)
device = connector.connect_volume(properties['data'])
host_device = device['path']
if not connector.check_valid_device(host_device):
msg = (_('Unable to access the backend storage '
'via the path %(path)s.') % {'path': host_device})
raise exception.VolumeBackendAPIException(data=msg)
LOG.debug('leave: _scan_device')
return device
def _scan_device(self, properties):
LOG.debug('enter: _scan_device')
use_multipath = self.configuration.use_multipath_for_image_xfer
device_scan_attempts = self.configuration.num_volume_device_scan_tries
protocol = properties['driver_volume_type']
connector = utils.brick_get_connector(protocol,
use_multipath=use_multipath,
device_scan_attempts=
device_scan_attempts,
conn=properties)
device = connector.connect_volume(properties['data'])
host_device = device['path']
if not connector.check_valid_device(host_device):
msg = (_('Unable to access the backend storage '
'via the path %(path)s.') % {'path': host_device})
raise exception.VolumeBackendAPIException(data=msg)
LOG.debug('leave: _scan_device')
return device
def _attach_ldev(self, ldev, properties):
volume = {
'provider_location': six.text_type(ldev),
}
conn = self.initialize_connection(volume, properties)
try:
connector = cinder_utils.brick_get_connector(
conn['driver_volume_type'],
use_multipath=self.conf.use_multipath_for_image_xfer,
device_scan_attempts=self.conf.num_volume_device_scan_tries,
conn=conn)
device = connector.connect_volume(conn['data'])
except Exception as ex:
with excutils.save_and_reraise_exception():
utils.output_log(634, ldev=ldev, reason=six.text_type(ex))
self._terminate_connection(volume, properties)
return {
'conn': conn,
'device': device,
'connector': connector,
}
def _connect_device(self, conn):
# Use Brick's code to do attach/detach
use_multipath = self.configuration.use_multipath_for_image_xfer
device_scan_attempts = self.configuration.num_volume_device_scan_tries
protocol = conn['driver_volume_type']
connector = utils.brick_get_connector(
protocol,
use_multipath=use_multipath,
device_scan_attempts=device_scan_attempts,
conn=conn)
device = connector.connect_volume(conn['data'])
attach_info = {'conn': conn, 'device': device['path'], 'connector': connector}
if conn['data']['encrypted']:
symlink_dev = '/dev/rbd-volume-%s' % conn['data']['volume_id']
utils.execute('ln', '--symbolic', '--force',
device['path'], symlink_dev, run_as_root=True)
attach_info = {'conn': conn, 'device': {'path': symlink_dev}, 'connector': connector}
if not conn['data']['encrypted']:
host_device = device['path']
unavailable = True
try:
# Secure network file systems will NOT run as root.
root_access = not self.secure_file_operations_enabled()
unavailable = not connector.check_valid_device(host_device,
root_access)
except Exception:
LOG.exception(_LE('Could not validate device %s'), host_device)
if unavailable and conn['encrypted']:
raise exception.DeviceUnavailable(path=host_device,
attach_info=attach_info,
reason=(_("Unable to access "
"the backend storage "
"via the path "
"%(path)s.") %
{'path': host_device}))
return attach_info
def _connect_vol(self, context, vol):
connector = None
try:
# Start connection, get the connector object and create the
# export (ACL, IP-Pools, etc)
conn = self._initialize_connection_2_2(
vol, {'multipath': False})
connector = utils.brick_get_connector(
conn['driver_volume_type'],
use_multipath=False,
device_scan_attempts=10,
conn=conn)
connector_info = {'initiator': connector.get_initiator()}
self._create_export_2_2(None, vol, connector_info)
retries = 10
attach_info = conn['data']
while True:
try:
attach_info.update(
connector.connect_volume(conn['data']))
break
except brick_exception.FailedISCSITargetPortalLogin:
retries -= 1
if not retries:
LOG.error("Could not log into portal before end of "
"polling period")
raise
LOG.debug("Failed to login to portal, retrying")
eventlet.sleep(2)
device_path = attach_info['path']
yield device_path
finally:
# Close target connection
if connector:
# Best effort disconnection
try:
connector.disconnect_volume(attach_info, attach_info)
except Exception:
pass
def test_brick_get_connector(self):
root_helper = utils.get_root_helper()
self.mox.StubOutClassWithMocks(connector, 'ISCSIConnector')
connector.ISCSIConnector(execute=putils.execute,
driver=None,
root_helper=root_helper,
use_multipath=False,
device_scan_attempts=3)
self.mox.StubOutClassWithMocks(connector, 'FibreChannelConnector')
connector.FibreChannelConnector(execute=putils.execute,
driver=None,
root_helper=root_helper,
use_multipath=False,
device_scan_attempts=3)
self.mox.StubOutClassWithMocks(connector, 'AoEConnector')
connector.AoEConnector(execute=putils.execute,
driver=None,
root_helper=root_helper,
device_scan_attempts=3)
self.mox.StubOutClassWithMocks(connector, 'LocalConnector')
connector.LocalConnector(execute=putils.execute,
driver=None,
root_helper=root_helper,
device_scan_attempts=3)
self.mox.ReplayAll()
utils.brick_get_connector('iscsi')
utils.brick_get_connector('fibre_channel')
utils.brick_get_connector('aoe')
utils.brick_get_connector('local')
self.mox.VerifyAll()
def _attach_ldev(self, ldev, properties):
"""Attach the specified LDEV to the server."""
volume = {
'provider_location': six.text_type(ldev),
}
conn = self.initialize_connection(volume, properties)
try:
connector = cinder_utils.brick_get_connector(
conn['driver_volume_type'],
use_multipath=self.conf.use_multipath_for_image_xfer,
device_scan_attempts=self.conf.num_volume_device_scan_tries,
conn=conn)
device = connector.connect_volume(conn['data'])
except Exception as ex:
with excutils.save_and_reraise_exception():
utils.output_log(MSG.CONNECT_VOLUME_FAILED, ldev=ldev,
reason=six.text_type(ex))
self._terminate_connection(volume, properties)
return {
'conn': conn,
'device': device,
'connector': connector,
}
def _attach_volume(self, context, volume, properties, remote=False):
"""Attach the volume."""
if remote:
rpcapi = volume_rpcapi.VolumeAPI()
conn = rpcapi.initialize_connection(context, volume, properties)
else:
conn = self.initialize_connection(volume, properties)
# Use Brick's code to do attach/detach
use_multipath = self.configuration.use_multipath_for_image_xfer
protocol = conn['driver_volume_type']
connector = utils.brick_get_connector(protocol,
use_multipath=use_multipath)
device = connector.connect_volume(conn['data'])
host_device = device['path']
if not connector.check_valid_device(host_device):
raise exception.DeviceUnavailable(path=host_device,
reason=(_("Unable to access "
"the backend storage "
"via the path "
"%(path)s.") %
{'path': host_device}))
return {'conn': conn, 'device': device, 'connector': connector}
def _attach_volume(self, context, volume, properties, remote=False):
"""Attach the volume."""
if remote:
# Call remote manager's initialize_connection which includes
# driver's create_export and initialize_connection
rpcapi = volume_rpcapi.VolumeAPI()
conn = rpcapi.initialize_connection(context, volume, properties)
else:
# Call local driver's create_export and initialize_connection.
# NOTE(avishay) This is copied from the manager's code - need to
# clean this up in the future.
model_update = None
try:
LOG.debug(_("Volume %s: creating export"), volume['id'])
model_update = self.create_export(context, volume)
if model_update:
volume = self.db.volume_update(context, volume['id'],
model_update)
except exception.CinderException as ex:
if model_update:
LOG.exception(
_("Failed updating model of volume "
"%(volume_id)s with driver provided model "
"%(model)s") % {
'volume_id': volume['id'],
'model': model_update
})
raise exception.ExportFailure(reason=ex)
try:
conn = self.initialize_connection(volume, properties)
except Exception as err:
try:
err_msg = (_('Unable to fetch connection information from '
'backend: %(err)s') % {
'err': err
})
LOG.error(err_msg)
LOG.debug("Cleaning up failed connect initialization.")
self.remove_export(context, volume)
except Exception as ex:
ex_msg = (_('Error encountered during cleanup '
'of a failed attach: %(ex)s') % {
'ex': ex
})
LOG.error(err_msg)
raise exception.VolumeBackendAPIException(data=ex_msg)
raise exception.VolumeBackendAPIException(data=err_msg)
# Use Brick's code to do attach/detach
use_multipath = self.configuration.use_multipath_for_image_xfer
device_scan_attempts = self.configuration.num_volume_device_scan_tries
protocol = conn['driver_volume_type']
connector = utils.brick_get_connector(
protocol,
use_multipath=use_multipath,
device_scan_attempts=device_scan_attempts,
conn=conn)
device = connector.connect_volume(conn['data'])
host_device = device['path']
if not connector.check_valid_device(host_device):
raise exception.DeviceUnavailable(path=host_device,
reason=(_("Unable to access "
"the backend storage "
"via the path "
"%(path)s.") % {
'path': host_device
}))
return {'conn': conn, 'device': device, 'connector': connector}
