Issue 500 if the volume fails to prov.
Issue 500 if the volume fails to prov.

cp16net/trove,citrix-openstack-build/trove,mmasaki/trove,openstack/trove,redhat-openstack/trove,citrix-openstack-build/trove,cp16net/trove,cp16net/trove,zhujzhuo/openstack-trove,zhangg/trove,redhat-openstack/trove,mmasaki/trove,changsimon/trove,citrix-openstack-build/trove,changsimon/trove,hplustree/trove,fabian4/trove,redhat-openstack/trove,denismakogon/trove-guestagent,zhujzhuo/openstack-trove,citrix-openstack/build-trove,mmasaki/trove,citrix-openstack/build-trove,fabian4/trove,zhujzhuo/openstack-trove,denismakogon/trove-guestagent,fabian4/trove,citrix-openstack/build-trove,changsimon/trove,hplustree/trove,openstack/trove,zhangg/trove