Add missing IO engines to the HOWTO

Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/HOWTO b/HOWTO
index 1c4b308cf3df9bd33d75306cb3e0e2dfd8df4a40..87346ae5acee4cdf62497adbbc556a9f88289c8c 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -670,15 +670,29 @@ ioengine=str      Defines how the job issues io to the file. The following
                                channel semantics (Send/Recv) for the
                                InfiniBand, RoCE and iWARP protocols.
 
                                channel semantics (Send/Recv) for the
                                InfiniBand, RoCE and iWARP protocols.
 

-                       falloc   IO engine that does regular fallocate to
-                                simulate data transfer as fio ioengine.
-                                DDIR_READ  does fallocate(,mode = keep_size,)
-                                DDIR_WRITE does fallocate(,mode = 0)
-                                DDIR_TRIM  does fallocate(,mode = punch_hole)
+                       falloc  IO engine that does regular fallocate to
+                               simulate data transfer as fio ioengine.
+                               DDIR_READ  does fallocate(,mode = keep_size,)
+                               DDIR_WRITE does fallocate(,mode = 0)
+                               DDIR_TRIM  does fallocate(,mode = punch_hole)

 
                        e4defrag IO engine that does regular EXT4_IOC_MOVE_EXT
 
                        e4defrag IO engine that does regular EXT4_IOC_MOVE_EXT

-                                ioctls to simulate defragment activity in
-                                request to DDIR_WRITE event
+                               ioctls to simulate defragment activity in
+                               request to DDIR_WRITE event
+
+                       rbd     IO engine supporting direct access to Ceph
+                               Rados Block Devices (RBD) via librbd without
+                               the need to use the kernel rbd driver. This
+                               ioengine defines engine specific options.
+
+                       gfapi   Using Glusterfs libgfapi sync interface to
+                               direct access to Glusterfs volumes without
+                               options.
+
+                       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.

 
                        external Prefix to specify loading an external
                                IO engine object file. Append the engine
 
                        external Prefix to specify loading an external
                                IO engine object file. Append the engine