(openstack) volume type list --long
+------ ------- ------- ----+-- ------- ----+-- ------- ----+-- ------- ------- ------- --+
| ID | Name | Description | Properties |
+------ ------- ------- ----+-- ------- ----+-- ------- ----+-- ------- ------- ------- --+
| 1fe0d6d1- d433-4705- 963 | lvmdriver-1 | None | volume_ backend_ name='lv |
| 2-04cbab811cb9 | | | mdriver-1' |
+------ ------- ------- ----+-- ------- ----+-- ------- ----+-- ------- ------- ------- --+

We can see there is not a column to tell users they are public or private,
I think "Is Public" is a important column that users will like to see it
from the list command