gfs2_jadd(8) on Linux
The text aa8b801df0f5, as Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze) shipped it.
Add journals to a GFS2 filesystem
Flags it lists
-
-D -
-J -
-V -
-c -
-h -
-j -
-q -
-u