fsck.gfs2(8) on Linux
The text 42852b13a5d8, as Debian 7 (Wheezy), Debian 6.0 (Squeeze) shipped it.
Offline GFS2 file system checker
Flags it lists
-
-V -
-a -
-f -
-h -
-n -
-p -
-q -
-v -
-y