cinder type-create nfs-1
cinder type-key nfs-1 set volume_backend_name=nfs-1
cinder type-create iscsi-volume1
cinder type-create iscsi-volume2
cinder type-key iscsi-volume1 set volume_backend_name=iscsi-volume1
cinder type-key iscsi-volume2 set volume_backend_name=iscsi-volume2
cinder type-list
cinder extra-specs-list