I see you have used openstack volume --os-volume-api-version 3.42 set d9bbb60b-0b83-45d4-8088-70160cd1d12d --size 20
But --os-* options applies directly to the openstack command, can you please try:
openstack --os-volume-api-version 3.42 volume set d9bbb60b-0b83-45d4-8088-70160cd1d12d --size 20 ?
I see you have used api-version 3.42 set d9bbb60b- 0b83-45d4- 8088-70160cd1d1 2d --size 20
openstack volume --os-volume-
But --os-* options applies directly to the openstack command, can you please try:
openstack --os-volume- api-version 3.42 volume set d9bbb60b- 0b83-45d4- 8088-70160cd1d1 2d --size 20
?