# Pastebin E1x50UwD
2016-08-16 10:05:55.306 15937 ERROR oslo_messaging.rpc.dispatcher Traceback (most recent call last):
2016-08-16 10:05:55.306 15937 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 138, in _dispatch_and_reply
2016-08-16 10:05:55.306 15937 ERROR oslo_messaging.rpc.dispatcher     incoming.message))
2016-08-16 10:05:55.306 15937 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 185, in _dispatch
2016-08-16 10:05:55.306 15937 ERROR oslo_messaging.rpc.dispatcher     return self._do_dispatch(endpoint, method, ctxt, args)
2016-08-16 10:05:55.306 15937 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 127, in _do_dispatch
2016-08-16 10:05:55.306 15937 ERROR oslo_messaging.rpc.dispatcher     result = func(ctxt, **new_args)
2016-08-16 10:05:55.306 15937 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/cinder/volume/manager.py", line 1473, in initialize_connection
2016-08-16 10:05:55.306 15937 ERROR oslo_messaging.rpc.dispatcher     raise exception.VolumeBackendAPIException(data=err_msg)
2016-08-16 10:05:55.306 15937 ERROR oslo_messaging.rpc.dispatcher VolumeBackendAPIException: Bad or unexpected response from the storage volume backend API: Driver initialize connection failed (error: Parent instance <Volume at 0x7f6c7f2d2150> is not bound to a Session; lazy load operation of attribute 'volume_admin_metad
<155>Aug 16 10:05:55 node-9 cinder-volume: 2016-08-16 10:05:55.308 15937 ERROR oslo_messaging._drivers.common [req-d97e61ba-28ba-46eb-97bc-09e95162a1eb 1f0a08659d2a4ce1a3523c2637f572be 3b93a86a24e84cd4afae7d336d42fc31 - - -] Returning exception Bad or unexpected response from the storage volume backend API: Driver initialize connection failed (error: Parent instance <Volume at 0x7f6c7f2d2150> is not bound to a Session; lazy load operation of attribute 'volume_admin_metadata' cannot proceed). to caller
<155>Aug 16 10:05:55 node-9 cinder-volume: 2016-08-16 10:05:55.309 15937 ERROR oslo_messaging._drivers.common [req-d97e61ba-28ba-46eb-97bc-09e95162a1eb 1f0a08659d2a4ce1a3523c2637f572be 3b93a86a24e84cd4afae7d336d42fc31 - - -] ['Traceback (most recent call last):\n', '  File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 138, in _dispatch_and_reply\n    incoming.message))\n', '  File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 185, in _dispatch\n    return self._do_dispatch(endpoint, method, ctxt, args)\n', '  File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 127, in _do_dispatch\n    result = func(ctxt, **new_args)\n', '  File "/usr/lib/python2.7/dist-packages/cinder/volume/manager.py", line 1473, in initialize_connection\n    raise exception.VolumeBackendAPIException(data=err_msg)\n', "VolumeBackendAPIException: Bad or unexpected response from the storage volume backend API: Driver initialize connection failed (error: Parent instance <Volume at 0x7f6c7f2d2150> is not bound to a Session; lazy load operation of attribute 'volume_admin_metadata' cannot proceed).\n"]