gluster help and gluster volume help do not show a commit option.

[root@edw-gc01 ~]# gluster help
...
volume replace-brick <VOLNAME> (<BRICK> <NEW-BRICK>) start|pause|abort|status - replace-brick operations
...

[root@edw-gc01 ~]# gluster volume help
...
volume replace-brick <VOLNAME> (<BRICK> <NEW-BRICK>) start|pause|abort|status - replace-brick operations
...

However, it is shown if you enter the command incorrectly:

[root@edw-gc01 ~]# gluster volume replace-brick help
Usage: volume replace-brick <VOLNAME> <BRICK> <NEW-BRICK> start|pause|abort|commit|status
Replacing brick from Volume help failed