vos_listvol(1) on Linux
The text efb5df86663a, as Debian 10 (Buster) shipped it.
Displays information from a volume header
Flags it lists
-
-encrypt -
-extended -
-fast -
-format -
-help -
-localauth -
-long -
-noauth -
-noresolve -
-quiet -
-verbose