nova.utils [-] Inner Exception: No module named "nova.volume.xensm from (pid=640) import_class /usr/lib/python2.7/dist-packages/nova/utils.py:78
2012-10-05 11:22:28 CRITICAL nova [-] Class XenSMDriver" could not be found: No module named "nova.volume.xensm
2012-10-05 11:22:28 TRACE nova Traceback (most recent call last):
2012-10-05 11:22:28 TRACE nova   File "/usr/bin/nova-volume", line 47, in <module>
2012-10-05 11:22:28 TRACE nova     server = service.Service.create(binary='nova-volume')
2012-10-05 11:22:28 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/service.py", line 241, in create
2012-10-05 11:22:28 TRACE nova     report_interval, periodic_interval)
2012-10-05 11:22:28 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/service.py", line 150, in __init__
2012-10-05 11:22:28 TRACE nova     self.manager = manager_class(host=self.host, *args, **kwargs)
2012-10-05 11:22:28 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/volume/manager.py", line 79, in __init__
2012-10-05 11:22:28 TRACE nova     self.driver = utils.import_object(volume_driver)
2012-10-05 11:22:28 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/utils.py", line 88, in import_object
2012-10-05 11:22:28 TRACE nova     cls = import_class(import_str)
2012-10-05 11:22:28 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/utils.py", line 79, in import_class
2012-10-05 11:22:28 TRACE nova     raise exception.ClassNotFound(class_name=class_str, exception=exc)
2012-10-05 11:22:28 TRACE nova ClassNotFound: Class XenSMDriver" could not be found: No module named "nova.volume.xensm