I'm using RHEL srever. I'm able to enable the volume service but not able to start it."Failed to initialize driver" error found in cinder-volume.log. status of the cinder-volume service is down.

Here is the error when I check for the status of volume service.

openstack-cinder-volume.service - OpenStack Cinder Volume Server Loaded: loaded (/usr/lib/systemd/system/openstack-cinder-volume.service; enabled; vendor preset: disabled) Active: failed (Result: exit-code) since Mon 2016-06-06 19:33:12 IST; 16h ago Process: 36368 ExecStart=/usr/bin/cinder-volume --config-file /usr/share/cinder/cinder-dist.conf --config-file /etc/cinder/cinder.conf --logfile /var/log/cinder/volume.log (code=exited, status=1/FAILURE) Main PID: 36368 (code=exited, status=1/FAILURE)

Jun 06 19:33:12 http://pun01cloud03.ad.infosys.com cinder-volume[36368]: File "/usr/... Jun 06 19:33:12 http://pun01cloud03.ad.infosys.com cinder-volume[36368]: from cinder... Jun 06 19:33:12 http://pun01cloud03.ad.infosys.com cinder-volume[36368]: File "/usr/... Jun 06 19:33:12 http://pun01cloud03.ad.infosys.com cinder-volume[36368]: from cinder... Jun 06 19:33:12 http://pun01cloud03.ad.infosys.com cinder-volume[36368]: File "/usr/... Jun 06 19:33:12 http://pun01cloud03.ad.infosys.com cinder-volume[36368]: from oslo_p... Jun 06 19:33:12 http://pun01cloud03.ad.infosys.com cinder-volume[36368]: ImportError... Jun 06 19:33:12 http://pun01cloud03.ad.infosys.com systemd[1]: openstack-cinder-volu... Jun 06 19:33:12 http://pun01cloud03.ad.infosys.com systemd[1]: Unit openstack-cinder... Jun 06 19:33:12 http://pun01cloud03.ad.infosys.com systemd[1]: openstack-cinder-volu... Hint: Some lines were ellipsized, use -l to show in full.