gmirror(8) on FreeBSD
The text 93ac91f2ff4c, as FreeBSD 6.2-RELEASE, FreeBSD 6.1-RELEASE shipped it.
control utility for mirrored devices
Flags it lists
-
-a -
-b -
-d -
-f -
-h -
-i -
-n -
-p -
-s -
-v