X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=engines%2Frbd.c;h=2f25889ac877a09730bf6e037f5c9a3d7042dc64;hb=9dc528b1638b625b5e167983a74de4e85c5859ea;hp=268b6ebdffad2b71e4da565ed90867e76f90947a;hpb=fa443634fbfa38fd5d6418a96a45022c78b90df4;p=fio.git

diff --git a/engines/rbd.c b/engines/rbd.c
index 268b6ebd..2f25889a 100644
--- a/engines/rbd.c
+++ b/engines/rbd.c
@@ -173,7 +173,7 @@ static int _fio_rbd_connect(struct thread_data *td)
 		char *client_name = NULL; 
 
 		/*
-		 * If we specify cluser name, the rados_create2
+		 * If we specify cluster name, the rados_create2
 		 * will not assume 'client.'. name is considered
 		 * as a full type.id namestr
 		 */
@@ -227,12 +227,30 @@ static int _fio_rbd_connect(struct thread_data *td)
 		goto failed_shutdown;
 	}
 
+        if (td->o.odirect) {
+		r = rados_conf_set(rbd->cluster, "rbd_cache", "false");
+		if (r < 0) {
+			log_info("failed to disable RBD in-memory cache\n");
+		}
+	}
+
 	r = rbd_open(rbd->io_ctx, o->rbd_name, &rbd->image, NULL /*snap */ );
 	if (r < 0) {
 		log_err("rbd_open failed.\n");
 		goto failed_open;
 	}
 
+	if (!td->o.odirect) {
+		/*
+		 * ensure cache enables writeback/around mode unless explicitly
+		 * configured for writethrough mode
+		 */
+		r = rbd_flush(rbd->image);
+		if (r < 0) {
+			log_info("rbd: failed to issue initial flush\n");
+		}
+	}
+
 	if (!_fio_rbd_setup_poll(rbd))
 		goto failed_poll;
 
@@ -615,7 +633,7 @@ static int fio_rbd_setup(struct thread_data *td)
 
 	/* taken from "net" engine. Pretend we deal with files,
 	 * even if we do not have any ideas about files.
-	 * The size of the RBD is set instead of a artificial file.
+	 * The size of the RBD is set instead of an artificial file.
 	 */
 	if (!td->files_index) {
 		add_file(td, td->o.filename ? : "rbd", 0, 0);