def _test_volume_attach(self, driver_bdm, bdm_dict,
fake_volume, check_attach=True,
fail_check_attach=False, driver_attach=False,
fail_driver_attach=False, access_mode='rw'):
elevated_context = self.context.elevated()
self.stubs.Set(self.context, 'elevated',
lambda: elevated_context)
self.mox.StubOutWithMock(driver_bdm._bdm_obj, 'save')
self.mox.StubOutWithMock(encryptors, 'get_encryption_metadata')
instance = {'id': 'fake_id', 'uuid': 'fake_uuid'}
connector = {'ip': 'fake_ip', 'host': 'fake_host'}
connection_info = {'data': {'access_mode': access_mode}}
expected_conn_info = {'data': {'access_mode': access_mode},
'serial': fake_volume['id']}
enc_data = {'fake': 'enc_data'}
self.volume_api.get(self.context,
fake_volume['id']).AndReturn(fake_volume)
if check_attach:
if not fail_check_attach:
self.volume_api.check_attach(self.context, fake_volume,
instance=instance).AndReturn(None)
else:
self.volume_api.check_attach(self.context, fake_volume,
instance=instance).AndRaise(
test.TestingException)
return instance, expected_conn_info
self.virt_driver.get_volume_connector(instance).AndReturn(connector)
self.volume_api.initialize_connection(
elevated_context, fake_volume['id'],
connector).AndReturn(connection_info)
if driver_attach:
encryptors.get_encryption_metadata(
elevated_context, self.volume_api, fake_volume['id'],
connection_info).AndReturn(enc_data)
if not fail_driver_attach:
self.virt_driver.attach_volume(
elevated_context, expected_conn_info, instance,
bdm_dict['device_name'],
disk_bus=bdm_dict['disk_bus'],
device_type=bdm_dict['device_type'],
encryption=enc_data).AndReturn(None)
else:
self.virt_driver.attach_volume(
elevated_context, expected_conn_info, instance,
bdm_dict['device_name'],
disk_bus=bdm_dict['disk_bus'],
device_type=bdm_dict['device_type'],
encryption=enc_data).AndRaise(test.TestingException)
self.volume_api.terminate_connection(
elevated_context, fake_volume['id'],
expected_conn_info).AndReturn(None)
return instance, expected_conn_info
self.volume_api.attach(elevated_context, fake_volume['id'],
'fake_uuid', bdm_dict['device_name'],
mode=access_mode).AndReturn(None)
driver_bdm._bdm_obj.save(self.context).AndReturn(None)
return instance, expected_conn_info
def driver_detach(self, context, instance, volume_api, virt_driver):
connection_info = self['connection_info']
mp = self['mount_device']
volume_id = self.volume_id
LOG.info(_LI('Attempting to driver detach volume %(volume_id)s from '
' mountpoint %(mp)s'), {'volume_id': volume_id, 'mp': mp},
instance=instance)
try:
if not virt_driver.instance_exists(instance):
LOG.warning(_LW('Detaching volume from unknown instance'),
instance=instance)
encryption = encryptors.get_encryption_metadata(context,
volume_api, volume_id, connection_info)
virt_driver.detach_volume(connection_info, instance, mp,
encryption=encryption)
except exception.DiskNotFound as err:
LOG.warning(_LW('Ignoring DiskNotFound exception while '
'detaching volume %(volume_id)s from '
'%(mp)s : %(err)s'),
{'volume_id': volume_id, 'mp': mp,
'err': err}, instance=instance)
except Exception:
with excutils.save_and_reraise_exception():
LOG.exception(_LE('Failed to detach volume '
'%(volume_id)s from %(mp)s'),
{'volume_id': volume_id, 'mp': mp},
instance=instance)
volume_api.roll_detaching(context, volume_id)
def attach(self,
context,
instance,
volume_api,
virt_driver,
do_check_attach=True,
do_driver_attach=False):
volume = volume_api.get(context, self.volume_id)
if do_check_attach:
volume_api.check_attach(context, volume, instance=instance)
volume_id = volume['id']
context = context.elevated()
connector = virt_driver.get_volume_connector(instance)
connection_info = volume_api.initialize_connection(
context, volume_id, connector)
if 'serial' not in connection_info:
connection_info['serial'] = self.volume_id
self._preserve_multipath_id(connection_info)
# If do_driver_attach is False, we will attach a volume to an instance
# at boot time. So actual attach is done by instance creation code.
if do_driver_attach:
encryption = encryptors.get_encryption_metadata(
context, volume_api, volume_id, connection_info)
try:
virt_driver.attach_volume(context,
connection_info,
instance,
self['mount_device'],
disk_bus=self['disk_bus'],
device_type=self['device_type'],
encryption=encryption)
except Exception: # pylint: disable=W0702
with excutils.save_and_reraise_exception():
LOG.exception(_("Driver failed to attach volume "
"%(volume_id)s at %(mountpoint)s"), {
'volume_id': volume_id,
'mountpoint': self['mount_device']
},
context=context,
instance=instance)
volume_api.terminate_connection(context, volume_id,
connector)
self['connection_info'] = connection_info
mode = 'rw'
if 'data' in connection_info:
mode = connection_info['data'].get('access_mode', 'rw')
if volume['attach_status'] == "detached":
volume_api.attach(context,
volume_id,
instance['uuid'],
self['mount_device'],
mode=mode)
def attach(
self, context, instance, volume_api, virt_driver, do_check_attach=True, do_driver_attach=False, **kwargs
):
volume = volume_api.get(context, self.volume_id)
if do_check_attach:
volume_api.check_attach(context, volume, instance=instance)
volume_id = volume["id"]
context = context.elevated()
connector = virt_driver.get_volume_connector(instance)
connection_info = volume_api.initialize_connection(context, volume_id, connector)
if "serial" not in connection_info:
connection_info["serial"] = self.volume_id
self._preserve_multipath_id(connection_info)
# If do_driver_attach is False, we will attach a volume to an instance
# at boot time. So actual attach is done by instance creation code.
if do_driver_attach:
encryption = encryptors.get_encryption_metadata(context, volume_api, volume_id, connection_info)
try:
virt_driver.attach_volume(
context,
connection_info,
instance,
self["mount_device"],
disk_bus=self["disk_bus"],
device_type=self["device_type"],
encryption=encryption,
)
except Exception:
with excutils.save_and_reraise_exception():
LOG.exception(
_LE("Driver failed to attach volume " "%(volume_id)s at %(mountpoint)s"),
{"volume_id": volume_id, "mountpoint": self["mount_device"]},
context=context,
instance=instance,
)
volume_api.terminate_connection(context, volume_id, connector)
self["connection_info"] = connection_info
if self.volume_size is None:
self.volume_size = volume.get("size")
mode = "rw"
if "data" in connection_info:
mode = connection_info["data"].get("access_mode", "rw")
if volume["attach_status"] == "detached":
# NOTE(mriedem): save our current state so connection_info is in
# the database before the volume status goes to 'in-use' because
# after that we can detach and connection_info is required for
# detach.
self.save()
volume_api.attach(context, volume_id, instance.uuid, self["mount_device"], mode=mode)
def attach(self, context, instance, volume_api, virt_driver,
do_check_attach=True, do_driver_attach=False):
volume = volume_api.get(context, self.volume_id)
if do_check_attach:
volume_api.check_attach(context, volume, instance=instance)
volume_id = volume['id']
context = context.elevated()
connector = virt_driver.get_volume_connector(instance)
connection_info = volume_api.initialize_connection(context,
volume_id,
connector)
if 'serial' not in connection_info:
connection_info['serial'] = self.volume_id
self._preserve_multipath_id(connection_info)
# If do_driver_attach is False, we will attach a volume to an instance
# at boot time. So actual attach is done by instance creation code.
if do_driver_attach:
encryption = encryptors.get_encryption_metadata(
context, volume_api, volume_id, connection_info)
try:
virt_driver.attach_volume(
context, connection_info, instance,
self['mount_device'], disk_bus=self['disk_bus'],
device_type=self['device_type'], encryption=encryption)
except Exception:
with excutils.save_and_reraise_exception():
LOG.exception(_LE("Driver failed to attach volume "
"%(volume_id)s at %(mountpoint)s"),
{'volume_id': volume_id,
'mountpoint': self['mount_device']},
context=context, instance=instance)
volume_api.terminate_connection(context, volume_id,
connector)
self['connection_info'] = connection_info
mode = 'rw'
if 'data' in connection_info:
mode = connection_info['data'].get('access_mode', 'rw')
if volume['attach_status'] == "detached":
# NOTE(mriedem): save our current state so connection_info is in
# the database before the volume status goes to 'in-use' because
# after that we can detach and connection_info is required for
# detach.
self.save()
volume_api.attach(context, volume_id, instance.uuid,
self['mount_device'], mode=mode)
def attach(self, context, instance, volume_api, virt_driver,
do_check_attach=True, do_driver_attach=False):
volume = volume_api.get(context, self.volume_id)
if do_check_attach:
volume_api.check_attach(context, volume, instance=instance)
volume_id = volume['id']
context = context.elevated()
connector = virt_driver.get_volume_connector(instance)
connection_info = volume_api.initialize_connection(context,
volume_id,
connector)
if 'serial' not in connection_info:
connection_info['serial'] = self.volume_id
self._preserve_multipath_id(connection_info)
# If do_driver_attach is False, we will attach a volume to an instance
# at boot time. So actual attach is done by instance creation code.
if do_driver_attach:
encryption = encryptors.get_encryption_metadata(
context, volume_api, volume_id, connection_info)
try:
virt_driver.attach_volume(
context, connection_info, instance,
self['mount_device'], disk_bus=self['disk_bus'],
device_type=self['device_type'], encryption=encryption)
except Exception:
with excutils.save_and_reraise_exception():
LOG.exception(_LE("Driver failed to attach volume "
"%(volume_id)s at %(mountpoint)s"),
{'volume_id': volume_id,
'mountpoint': self['mount_device']},
context=context, instance=instance)
volume_api.terminate_connection(context, volume_id,
connector)
self['connection_info'] = connection_info
mode = 'rw'
if 'data' in connection_info:
mode = connection_info['data'].get('access_mode', 'rw')
if volume['attach_status'] == "detached":
# NOTE(mriedem): save our current state so connection_info is in
# the database before the volume status goes to 'in-use' because
# after that we can detach and connection_info is required for
# detach.
self.save()
volume_api.attach(context, volume_id, instance.uuid,
self['mount_device'], mode=mode)
def attach(self, context, instance, volume_api, virt_driver,
do_check_attach=True, do_driver_attach=False):
volume = volume_api.get(context, self.volume_id)
if do_check_attach:
volume_api.check_attach(context, volume, instance=instance)
volume_id = volume['id']
context = context.elevated()
connector = virt_driver.get_volume_connector(instance)
host = self._get_host(connector)
connection_info = volume_api.initialize_connection(context,
volume_id,
connector,
instance['uuid'],
host)
if 'serial' not in connection_info:
connection_info['serial'] = self.volume_id
self._preserve_multipath_id(connection_info)
# If do_driver_attach is False, we will attach a volume to an instance
# at boot time. So actual attach is done by instance creation code.
if do_driver_attach:
encryption = encryptors.get_encryption_metadata(
context, volume_api, volume_id, connection_info)
try:
virt_driver.attach_volume(
context, connection_info, instance,
self['mount_device'], disk_bus=self['disk_bus'],
device_type=self['device_type'], encryption=encryption)
except Exception: # pylint: disable=W0702
with excutils.save_and_reraise_exception():
LOG.exception(_("Driver failed to attach volume "
"%(volume_id)s at %(mountpoint)s"),
{'volume_id': volume_id,
'mountpoint': self['mount_device']},
context=context, instance=instance)
volume_api.terminate_connection(context, volume_id,
connector,
instance['uuid'],
host)
self['connection_info'] = connection_info
mode = 'rw'
if 'data' in connection_info:
mode = connection_info['data'].get('access_mode', 'rw')
volume_api.attach(context, volume_id, instance['uuid'],
self['mount_device'], mode=mode)
def attach(self, context, instance, volume_api, virt_driver, do_check_attach=True, do_driver_attach=False):
volume = volume_api.get(context, self.volume_id)
if do_check_attach:
volume_api.check_attach(context, volume, instance=instance)
volume_id = volume["id"]
context = context.elevated()
connector = virt_driver.get_volume_connector(instance)
connection_info = volume_api.initialize_connection(context, volume_id, connector)
if "serial" not in connection_info:
connection_info["serial"] = self.volume_id
self._preserve_multipath_id(connection_info)
# If do_driver_attach is False, we will attach a volume to an instance
# at boot time. So actual attach is done by instance creation code.
if do_driver_attach:
encryption = encryptors.get_encryption_metadata(context, volume_api, volume_id, connection_info)
try:
virt_driver.attach_volume(
context,
connection_info,
instance,
self["mount_device"],
disk_bus=self["disk_bus"],
device_type=self["device_type"],
encryption=encryption,
)
except Exception: # pylint: disable=W0702
with excutils.save_and_reraise_exception():
LOG.exception(
_("Driver failed to attach volume " "%(volume_id)s at %(mountpoint)s"),
{"volume_id": volume_id, "mountpoint": self["mount_device"]},
context=context,
instance=instance,
)
volume_api.terminate_connection(context, volume_id, connector)
self["connection_info"] = connection_info
mode = "rw"
if "data" in connection_info:
mode = connection_info["data"].get("access_mode", "rw")
if volume["attach_status"] == "detached":
volume_api.attach(context, volume_id, instance["uuid"], self["mount_device"], mode=mode)
def driver_detach(self, context, instance, volume_api, virt_driver):
connection_info = self['connection_info']
mp = self['mount_device']
volume_id = self.volume_id
LOG.info(_LI('Attempting to driver detach volume %(volume_id)s from '
' mountpoint %(mp)s'), {
'volume_id': volume_id,
'mp': mp
},
instance=instance)
try:
if not virt_driver.instance_exists(instance):
LOG.warning(_LW('Detaching volume from unknown instance'),
instance=instance)
encryption = encryptors.get_encryption_metadata(
context, volume_api, volume_id, connection_info)
virt_driver.detach_volume(connection_info,
instance,
mp,
encryption=encryption)
except exception.DiskNotFound as err:
LOG.warning(_LW('Ignoring DiskNotFound exception while '
'detaching volume %(volume_id)s from '
'%(mp)s : %(err)s'), {
'volume_id': volume_id,
'mp': mp,
'err': err
},
instance=instance)
except Exception:
with excutils.save_and_reraise_exception():
LOG.exception(_LE('Failed to detach volume '
'%(volume_id)s from %(mp)s'), {
'volume_id': volume_id,
'mp': mp
},
instance=instance)
volume_api.roll_detaching(context, volume_id)
def _test_volume_attach(self,
driver_bdm,
bdm_dict,
fake_volume,
check_attach=True,
fail_check_attach=False,
driver_attach=False,
fail_driver_attach=False,
volume_attach=True,
fail_volume_attach=False,
access_mode='rw'):
elevated_context = self.context.elevated()
self.stubs.Set(self.context, 'elevated', lambda: elevated_context)
self.mox.StubOutWithMock(driver_bdm._bdm_obj, 'save')
self.mox.StubOutWithMock(encryptors, 'get_encryption_metadata')
instance_detail = {'id': '123', 'uuid': 'fake_uuid'}
instance = fake_instance.fake_instance_obj(self.context,
**instance_detail)
connector = {'ip': 'fake_ip', 'host': 'fake_host'}
connection_info = {'data': {'access_mode': access_mode}}
expected_conn_info = {
'data': {
'access_mode': access_mode
},
'serial': fake_volume['id']
}
enc_data = {'fake': 'enc_data'}
self.volume_api.get(self.context,
fake_volume['id']).AndReturn(fake_volume)
if check_attach:
if not fail_check_attach:
self.volume_api.check_attach(self.context,
fake_volume,
instance=instance).AndReturn(None)
else:
self.volume_api.check_attach(self.context,
fake_volume,
instance=instance).AndRaise(
test.TestingException)
driver_bdm._bdm_obj.save().AndReturn(None)
return instance, expected_conn_info
self.virt_driver.get_volume_connector(instance).AndReturn(connector)
self.volume_api.initialize_connection(
elevated_context, fake_volume['id'],
connector).AndReturn(connection_info)
if driver_attach:
encryptors.get_encryption_metadata(
elevated_context, self.volume_api, fake_volume['id'],
connection_info).AndReturn(enc_data)
if not fail_driver_attach:
self.virt_driver.attach_volume(
elevated_context,
expected_conn_info,
instance,
bdm_dict['device_name'],
disk_bus=bdm_dict['disk_bus'],
device_type=bdm_dict['device_type'],
encryption=enc_data).AndReturn(None)
else:
self.virt_driver.attach_volume(
elevated_context,
expected_conn_info,
instance,
bdm_dict['device_name'],
disk_bus=bdm_dict['disk_bus'],
device_type=bdm_dict['device_type'],
encryption=enc_data).AndRaise(test.TestingException)
self.volume_api.terminate_connection(elevated_context,
fake_volume['id'],
connector).AndReturn(None)
driver_bdm._bdm_obj.save().AndReturn(None)
return instance, expected_conn_info
if volume_attach:
driver_bdm._bdm_obj.save().AndReturn(None)
if not fail_volume_attach:
self.volume_api.attach(elevated_context,
fake_volume['id'],
'fake_uuid',
bdm_dict['device_name'],
mode=access_mode).AndReturn(None)
else:
self.volume_api.attach(elevated_context,
fake_volume['id'],
'fake_uuid',
bdm_dict['device_name'],
mode=access_mode).AndRaise(
test.TestingException)
driver_bdm._bdm_obj.save().AndReturn(None)
return instance, expected_conn_info
def _test_volume_attach(self, driver_bdm, bdm_dict,
fake_volume, check_attach=True,
fail_check_attach=False, driver_attach=False,
fail_driver_attach=False, volume_attach=True,
access_mode='rw'):
elevated_context = self.context.elevated()
self.stubs.Set(self.context, 'elevated',
lambda: elevated_context)
self.mox.StubOutWithMock(driver_bdm._bdm_obj, 'save')
self.mox.StubOutWithMock(encryptors, 'get_encryption_metadata')
instance = {'id': 'fake_id', 'uuid': 'fake_uuid'}
connector = {'ip': 'fake_ip', 'host': 'fake_host'}
connection_info = {'data': {'access_mode': access_mode}}
expected_conn_info = {'data': {'access_mode': access_mode},
'serial': fake_volume['id']}
enc_data = {'fake': 'enc_data'}
self.volume_api.get(self.context,
fake_volume['id']).AndReturn(fake_volume)
if check_attach:
if not fail_check_attach:
self.volume_api.check_attach(self.context, fake_volume,
instance=instance).AndReturn(None)
else:
self.volume_api.check_attach(self.context, fake_volume,
instance=instance).AndRaise(
test.TestingException)
return instance, expected_conn_info
self.virt_driver.get_volume_connector(instance).AndReturn(connector)
self.volume_api.initialize_connection(
elevated_context, fake_volume['id'],
connector).AndReturn(connection_info)
if driver_attach:
encryptors.get_encryption_metadata(
elevated_context, self.volume_api, fake_volume['id'],
connection_info).AndReturn(enc_data)
if not fail_driver_attach:
self.virt_driver.attach_volume(
elevated_context, expected_conn_info, instance,
bdm_dict['device_name'],
disk_bus=bdm_dict['disk_bus'],
device_type=bdm_dict['device_type'],
encryption=enc_data).AndReturn(None)
else:
self.virt_driver.attach_volume(
elevated_context, expected_conn_info, instance,
bdm_dict['device_name'],
disk_bus=bdm_dict['disk_bus'],
device_type=bdm_dict['device_type'],
encryption=enc_data).AndRaise(test.TestingException)
self.volume_api.terminate_connection(
elevated_context, fake_volume['id'],
expected_conn_info).AndReturn(None)
return instance, expected_conn_info
if volume_attach:
self.volume_api.attach(elevated_context, fake_volume['id'],
'fake_uuid', bdm_dict['device_name'],
mode=access_mode).AndReturn(None)
# NOTE(mriedem): save() is called with the elevated context within
# attach() and with the original context from the update_db decorator
# so we ignore which arg it is in test.
driver_bdm._bdm_obj.save(
mox.IgnoreArg()).MultipleTimes().AndReturn(None)
return instance, expected_conn_info
def _test_volume_attach(self,
driver_bdm,
bdm_dict,
fake_volume,
check_attach=True,
fail_check_attach=False,
driver_attach=False,
fail_driver_attach=False,
volume_attach=True,
access_mode='rw'):
elevated_context = self.context.elevated()
self.stubs.Set(self.context, 'elevated', lambda: elevated_context)
self.mox.StubOutWithMock(driver_bdm._bdm_obj, 'save')
self.mox.StubOutWithMock(encryptors, 'get_encryption_metadata')
instance = {'id': 'fake_id', 'uuid': 'fake_uuid'}
connector = {'ip': 'fake_ip', 'host': 'fake_host'}
connection_info = {'data': {'access_mode': access_mode}}
expected_conn_info = {
'data': {
'access_mode': access_mode
},
'serial': fake_volume['id']
}
enc_data = {'fake': 'enc_data'}
self.volume_api.get(self.context,
fake_volume['id']).AndReturn(fake_volume)
if check_attach:
if not fail_check_attach:
self.volume_api.check_attach(self.context,
fake_volume,
instance=instance).AndReturn(None)
else:
self.volume_api.check_attach(self.context,
fake_volume,
instance=instance).AndRaise(
test.TestingException)
return instance, expected_conn_info
self.virt_driver.get_volume_connector(instance).AndReturn(connector)
self.volume_api.initialize_connection(
elevated_context, fake_volume['id'],
connector).AndReturn(connection_info)
if driver_attach:
encryptors.get_encryption_metadata(
elevated_context, self.volume_api, fake_volume['id'],
connection_info).AndReturn(enc_data)
if not fail_driver_attach:
self.virt_driver.attach_volume(
elevated_context,
expected_conn_info,
instance,
bdm_dict['device_name'],
disk_bus=bdm_dict['disk_bus'],
device_type=bdm_dict['device_type'],
encryption=enc_data).AndReturn(None)
else:
self.virt_driver.attach_volume(
elevated_context,
expected_conn_info,
instance,
bdm_dict['device_name'],
disk_bus=bdm_dict['disk_bus'],
device_type=bdm_dict['device_type'],
encryption=enc_data).AndRaise(test.TestingException)
self.volume_api.terminate_connection(
elevated_context, fake_volume['id'],
expected_conn_info).AndReturn(None)
return instance, expected_conn_info
if volume_attach:
self.volume_api.attach(elevated_context,
fake_volume['id'],
'fake_uuid',
bdm_dict['device_name'],
mode=access_mode).AndReturn(None)
# NOTE(mriedem): save() is called with the elevated context within
# attach() and with the original context from the update_db decorator
# so we ignore which arg it is in test.
driver_bdm._bdm_obj.save(
mox.IgnoreArg()).MultipleTimes().AndReturn(None)
return instance, expected_conn_info
def _test_volume_attach(
self,
driver_bdm,
bdm_dict,
fake_volume,
check_attach=True,
fail_check_attach=False,
driver_attach=False,
fail_driver_attach=False,
volume_attach=True,
fail_volume_attach=False,
access_mode="rw",
availability_zone=None,
):
elevated_context = self.context.elevated()
self.stubs.Set(self.context, "elevated", lambda: elevated_context)
self.mox.StubOutWithMock(driver_bdm._bdm_obj, "save")
self.mox.StubOutWithMock(encryptors, "get_encryption_metadata")
instance_detail = {"id": "123", "uuid": "fake_uuid", "availability_zone": availability_zone}
instance = fake_instance.fake_instance_obj(self.context, **instance_detail)
connector = {"ip": "fake_ip", "host": "fake_host"}
connection_info = {"data": {"access_mode": access_mode}}
expected_conn_info = {"data": {"access_mode": access_mode}, "serial": fake_volume["id"]}
enc_data = {"fake": "enc_data"}
self.volume_api.get(self.context, fake_volume["id"]).AndReturn(fake_volume)
if check_attach:
if not fail_check_attach:
self.volume_api.check_attach(self.context, fake_volume, instance=instance).AndReturn(None)
else:
self.volume_api.check_attach(self.context, fake_volume, instance=instance).AndRaise(
test.TestingException
)
driver_bdm._bdm_obj.save().AndReturn(None)
return instance, expected_conn_info
self.virt_driver.get_volume_connector(instance).AndReturn(connector)
self.volume_api.initialize_connection(elevated_context, fake_volume["id"], connector).AndReturn(connection_info)
if driver_attach:
encryptors.get_encryption_metadata(
elevated_context, self.volume_api, fake_volume["id"], connection_info
).AndReturn(enc_data)
if not fail_driver_attach:
self.virt_driver.attach_volume(
elevated_context,
expected_conn_info,
instance,
bdm_dict["device_name"],
disk_bus=bdm_dict["disk_bus"],
device_type=bdm_dict["device_type"],
encryption=enc_data,
).AndReturn(None)
else:
self.virt_driver.attach_volume(
elevated_context,
expected_conn_info,
instance,
bdm_dict["device_name"],
disk_bus=bdm_dict["disk_bus"],
device_type=bdm_dict["device_type"],
encryption=enc_data,
).AndRaise(test.TestingException)
self.volume_api.terminate_connection(elevated_context, fake_volume["id"], connector).AndReturn(None)
driver_bdm._bdm_obj.save().AndReturn(None)
return instance, expected_conn_info
if volume_attach:
driver_bdm._bdm_obj.save().AndReturn(None)
if not fail_volume_attach:
self.volume_api.attach(
elevated_context, fake_volume["id"], "fake_uuid", bdm_dict["device_name"], mode=access_mode
).AndReturn(None)
else:
self.volume_api.attach(
elevated_context, fake_volume["id"], "fake_uuid", bdm_dict["device_name"], mode=access_mode
).AndRaise(test.TestingException)
if driver_attach:
self.virt_driver.detach_volume(
expected_conn_info, instance, bdm_dict["device_name"], encryption=enc_data
).AndReturn(None)
self.volume_api.terminate_connection(elevated_context, fake_volume["id"], connector).AndReturn(None)
self.volume_api.detach(elevated_context, fake_volume["id"]).AndReturn(None)
driver_bdm._bdm_obj.save().AndReturn(None)
return instance, expected_conn_info
def attach(self,
context,
instance,
volume_api,
virt_driver,
do_check_attach=True,
do_driver_attach=False,
**kwargs):
volume = volume_api.get(context, self.volume_id)
if do_check_attach:
volume_api.check_attach(context, volume, instance=instance)
volume_id = volume['id']
vol_multiattach = volume.get('multiattach', False)
has_attachments = bool(volume.get('attachments'))
virt_multiattach = virt_driver.capabilities['supports_multiattach']
if vol_multiattach and has_attachments and not virt_multiattach:
raise exception.MultiattachNotSupported(volume_id=volume_id)
context = context.elevated()
connector = virt_driver.get_volume_connector(instance)
connection_info = volume_api.initialize_connection(
context, volume_id, connector)
if 'serial' not in connection_info:
connection_info['serial'] = self.volume_id
self._preserve_multipath_id(connection_info)
if vol_multiattach and virt_multiattach:
connection_info['multiattach'] = True
# If do_driver_attach is False, we will attach a volume to an instance
# at boot time. So actual attach is done by instance creation code.
if do_driver_attach:
encryption = encryptors.get_encryption_metadata(
context, volume_api, volume_id, connection_info)
try:
virt_driver.attach_volume(context,
connection_info,
instance,
self['mount_device'],
disk_bus=self['disk_bus'],
device_type=self['device_type'],
encryption=encryption)
except Exception:
with excutils.save_and_reraise_exception():
LOG.exception(_LE("Driver failed to attach volume "
"%(volume_id)s at %(mountpoint)s"), {
'volume_id': volume_id,
'mountpoint': self['mount_device']
},
context=context,
instance=instance)
volume_api.check_and_terminate_connection(
context, volume_id, connector, instance.host)
self['connection_info'] = connection_info
if self.volume_size is None:
self.volume_size = volume.get('size')
mode = 'rw'
if 'data' in connection_info:
mode = connection_info['data'].get('access_mode', 'rw')
if (volume['attach_status'] == "detached"
or volume['attach_status'] == 'attached' and vol_multiattach):
# NOTE(mriedem): save our current state so connection_info is in
# the database before the volume status goes to 'in-use' because
# after that we can detach and connection_info is required for
# detach.
self.save()
try:
volume_api.attach(context,
volume_id,
instance.uuid,
self['mount_device'],
mode=mode)
except Exception:
with excutils.save_and_reraise_exception():
if do_driver_attach:
try:
virt_driver.detach_volume(connection_info,
instance,
self['mount_device'],
encryption=encryption)
except Exception:
LOG.warn(_LW("Driver failed to detach volume "
"%(volume_id)s at %(mount_point)s."),
{
'volume_id': volume_id,
'mount_point': self['mount_device']
},
exc_info=True,
context=context,
instance=instance)
volume_api.check_and_terminate_connection(
context, volume_id, connector, instance.host)
# Cinder-volume might have completed volume attach. So
# we should detach the volume. If the attach did not
# happen, the detach request will be ignored.
volume_api.detach(context, volume_id)
def attach(self, context, instance, volume_api, virt_driver,
do_check_attach=True, do_driver_attach=False, **kwargs):
volume = volume_api.get(context, self.volume_id)
if do_check_attach:
#song.w 12.25
volume_api.check_attach(context, volume, instance=instance)
#pass
volume_id = volume['id']
context = context.elevated()
connector = virt_driver.get_volume_connector(instance)
connection_info = volume_api.initialize_connection(context,
volume_id,
connector)
if 'serial' not in connection_info:
connection_info['serial'] = self.volume_id
self._preserve_multipath_id(connection_info)
# If do_driver_attach is False, we will attach a volume to an instance
# at boot time. So actual attach is done by instance creation code.
if do_driver_attach:
encryption = encryptors.get_encryption_metadata(
context, volume_api, volume_id, connection_info)
try:
virt_driver.attach_volume(
context, connection_info, instance,
self['mount_device'], disk_bus=self['disk_bus'],
device_type=self['device_type'], encryption=encryption)
except Exception:
with excutils.save_and_reraise_exception():
LOG.exception(_LE("Driver failed to attach volume "
"%(volume_id)s at %(mountpoint)s"),
{'volume_id': volume_id,
'mountpoint': self['mount_device']},
instance=instance)
volume_api.terminate_connection(context, volume_id,
connector)
self['connection_info'] = connection_info
if self.volume_size is None:
self.volume_size = volume.get('size')
mode = 'rw'
if 'data' in connection_info:
mode = connection_info['data'].get('access_mode', 'rw')
##song.w modify 2017-12-26
#Support the status of multiple mounts scenarios
#begin
if volume['multiattach']:
if volume['attach_status'] == "detached" or volume['attach_status'] == "attached":
self.save()
try:
volume_api.attach(context, volume_id, instance.uuid,
self['mount_device'], mode=mode)
except Exception:
with excutils.save_and_reraise_exception():
if do_driver_attach:
try:
virt_driver.detach_volume(connection_info,
instance,
self['mount_device'],
encryption=encryption)
except Exception:
LOG.warning(_LW("Driver failed to detach volume "
"%(volume_id)s at %(mount_point)s."),
{'volume_id': volume_id,
'mount_point': self['mount_device']},
exc_info=True, instance=instance)
volume_api.terminate_connection(context, volume_id,
connector)
# Cinder-volume might have completed volume attach. So
# we should detach the volume. If the attach did not
# happen, the detach request will be ignored.
volume_api.detach(context, volume_id)
else:
if volume['attach_status'] == "detached":
# NOTE(mriedem): save our current state so connection_info is in
# the database before the volume status goes to 'in-use' because
# after that we can detach and connection_info is required for
# detach.
self.save()
try:
volume_api.attach(context, volume_id, instance.uuid,
self['mount_device'], mode=mode)
except Exception:
with excutils.save_and_reraise_exception():
if do_driver_attach:
try:
virt_driver.detach_volume(connection_info,
instance,
self['mount_device'],
encryption=encryption)
except Exception:
LOG.warning(_LW("Driver failed to detach volume "
"%(volume_id)s at %(mount_point)s."),
{'volume_id': volume_id,
'mount_point': self['mount_device']},
exc_info=True, instance=instance)
volume_api.terminate_connection(context, volume_id,
connector)
# Cinder-volume might have completed volume attach. So
# we should detach the volume. If the attach did not
# happen, the detach request will be ignored.
volume_api.detach(context, volume_id)
# Support the status of multiple mounts scenarios
# end
"""
