mkfs.gfs2(8) on Linux
The text ae4ad6b727ca, as Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny) shipped it.
Make a GFS2 filesystem
Flags it lists
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-D -
-J -
-O -
-V -
-b -
-c -
-h -
-j -
-p -
-q -
-r -
-t -
-u