options.
.TP
.B gfapi
-Using Glusterfs libgfapi to direct access to Glusterfs volumes without
+Using Glusterfs libgfapi sync interface to direct access to Glusterfs volumes without
+having to go through FUSE. This ioengine defines engine specific
+options.
+.TP
+.B gfapi_async
+Using Glusterfs libgfapi async interface to direct access to Glusterfs volumes without
having to go through FUSE. This ioengine defines engine specific
options.
.RE