openstack@opensatck:/opt/stack/tempest/abc$ nova volume-list
+--------------------------------------+-----------+--------------+------+-------------+-------------+
| ID                                   | Status    | Display Name | Size | Volume Type | Attached to |
+--------------------------------------+-----------+--------------+------+-------------+-------------+
| afef77fe-b4b4-4277-b27e-afb0d69817e6 | available | None         | 2    | None        |             |
+--------------------------------------+-----------+--------------+------+-------------+-------------+
openstack@opensatck:/opt/stack/tempest/abc$ nova list
+--------------------------------------+------+--------+------------+-------------+------------------+
| ID                                   | Name | Status | Task State | Power State | Networks         |
+--------------------------------------+------+--------+------------+-------------+------------------+
| b8af808e-9672-4125-a8a0-a5b8eb606880 | anju | ACTIVE | None       | Running     | private=10.0.0.5 |
+--------------------------------------+------+--------+------------+-------------+------------------+
openstack@opensatck:/opt/stack/tempest/abc$ nova volume-attach
usage: nova volume-attach <server> <volume> <device>
error: too few arguments
Try 'nova help volume-attach' for more information.
openstack@opensatck:/opt/stack/tempest/abc$ nova volume-attach b8af808e-9672-4125-a8a0-a5b8eb606880 afef77fe-b4b4-4277-b27e-afb0d69817e6
usage: nova volume-attach <server> <volume> <device>
error: too few arguments
Try 'nova help volume-attach' for more information.
openstack@opensatck:/opt/stack/tempest/abc$ nova volume-attach b8af808e-9672-4125-a8a0-a5b8eb606880 afef77fe-b4b4-4277-b27e-afb0d69817e6 /dev/vdc
ERROR: The server has either erred or is incapable of performing the requested operation. (HTTP 500) (Request-ID: req-4ff723ac-44c2-45e6-ace2-fc38a5effb19)
openstack@opensatck:/opt/stack/tempest/abc$