"cinder backup-create" fails when using iSCSI multipath as volume backends.

Solution Verified - Updated -

Issue

  • cinder backup-create command fails with the following error when cinder uses iSCSI multipath as volume backends.

    ERROR oslo_messaging.rpc.server [req-xxxxxx - default default] Exception during message handling: os_brick.exception.VolumeDeviceNotFound: Volume device not found at .
ERROR oslo_messaging.rpc.server Traceback (most recent call last):
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/oslo_messaging/rpc/server.py"", line 166, in _process_incoming
ERROR oslo_messaging.rpc.server     res = self.dispatcher.dispatch(message)
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/oslo_messaging/rpc/dispatcher.py"", line 265, in dispatch
ERROR oslo_messaging.rpc.server     return self._do_dispatch(endpoint, method, ctxt, args)
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/oslo_messaging/rpc/dispatcher.py"", line 194, in _do_dispatch
ERROR oslo_messaging.rpc.server     result = func(ctxt, **new_args)
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/cinder/backup/manager.py"", line 406, in create_backup
ERROR oslo_messaging.rpc.server     self._update_backup_error(backup, six.text_type(err))
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/oslo_utils/excutils.py"", line 220, in __exit__
ERROR oslo_messaging.rpc.server     self.force_reraise()
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/oslo_utils/excutils.py"", line 196, in force_reraise
ERROR oslo_messaging.rpc.server     six.reraise(self.type_, self.value, self.tb)
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/six.py"", line 693, in reraise
ERROR oslo_messaging.rpc.server     raise value
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/cinder/backup/manager.py"", line 395, in create_backup
ERROR oslo_messaging.rpc.server     updates = self._run_backup(context, backup, volume)
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/cinder/backup/manager.py"", line 466, in _run_backup
ERROR oslo_messaging.rpc.server     backup_device.is_snapshot)
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/cinder/backup/manager.py"", line 1058, in _attach_device
ERROR oslo_messaging.rpc.server     return self._attach_volume(ctxt, backup_device, properties)
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/cinder/backup/manager.py"", line 1080, in _attach_volume
ERROR oslo_messaging.rpc.server     {'volume_id', volume.id})
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/oslo_utils/excutils.py"", line 220, in __exit__
ERROR oslo_messaging.rpc.server     self.force_reraise()
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/oslo_utils/excutils.py"", line 196, in force_reraise
ERROR oslo_messaging.rpc.server     six.reraise(self.type_, self.value, self.tb)
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/six.py"", line 693, in reraise
ERROR oslo_messaging.rpc.server     raise value
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/cinder/backup/manager.py"", line 1069, in _attach_volume
ERROR oslo_messaging.rpc.server     return self._connect_device(conn)
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/cinder/backup/manager.py"", line 1111, in _connect_device
ERROR oslo_messaging.rpc.server     vol_handle = connector.connect_volume(conn['data'])
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/os_brick/utils.py"", line 137, in trace_logging_wrapper
ERROR oslo_messaging.rpc.server     return f(*args, **kwargs)
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/oslo_concurrency/lockutils.py"", line 328, in inner
ERROR oslo_messaging.rpc.server     return f(*args, **kwargs)
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/os_brick/initiator/connectors/iscsi.py"", line 518, in connect_volume
ERROR oslo_messaging.rpc.server     self._cleanup_connection(connection_properties, force=True)
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/oslo_utils/excutils.py"", line 220, in __exit__
ERROR oslo_messaging.rpc.server     self.force_reraise()
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/oslo_utils/excutils.py"", line 196, in force_reraise
ERROR oslo_messaging.rpc.server     six.reraise(self.type_, self.value, self.tb)
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/six.py"", line 693, in reraise
ERROR oslo_messaging.rpc.server     raise value
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/os_brick/initiator/connectors/iscsi.py"", line 512, in connect_volume
ERROR oslo_messaging.rpc.server     return self._connect_single_volume(connection_properties)
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/os_brick/utils.py"", line 61, in _wrapper
ERROR oslo_messaging.rpc.server     return r.call(f, *args, **kwargs)
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/retrying.py"", line 229, in call
ERROR oslo_messaging.rpc.server     raise attempt.get()
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/retrying.py"", line 261, in get
ERROR oslo_messaging.rpc.server     six.reraise(self.value[0], self.value[1], self.value[2])
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/six.py"", line 693, in reraise
ERROR oslo_messaging.rpc.server     raise value
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/retrying.py"", line 217, in call
ERROR oslo_messaging.rpc.server     attempt = Attempt(fn(*args, **kwargs), attempt_number, False)
ERROR oslo_messaging.rpc.server   File ""/usr/lib/python3.6/site-packages/os_brick/initiator/connectors/iscsi.py"", line 587, in _connect_single_volume
ERROR oslo_messaging.rpc.server     raise exception.VolumeDeviceNotFound(device='')
ERROR oslo_messaging.rpc.server os_brick.exception.VolumeDeviceNotFound: Volume device not found at .
ERROR oslo_messaging.rpc.server

Environment

  • Red Hat OpenStack Platform 15
  • cinder

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