From: Tomohiro Kusumi <tkusumi@tuxera.com>
Date: Mon, 18 Sep 2017 18:42:50 +0000 (+0300)
Subject: add fio_set_directio() error message for platforms without direct I/O
X-Git-Tag: fio-3.1~3
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=51102e0d64a2ae08472ecb90a72737f08de942fb;hp=78d4a262a0758d47631bfd44672bbd5f9eff9b42

add fio_set_directio() error message for platforms without direct I/O

This lets platforms without dio (e.g. OpenBSD) fail with an explicit
message, otherwise they fail without a clue about dio even with
--debug=all enabled.

The message modified based on comments from Jens.

Signed-off-by: Tomohiro Kusumi <tkusumi@tuxera.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/filesetup.c b/filesetup.c
index b51ab35c..891a55a1 100644
--- a/filesetup.c
+++ b/filesetup.c
@@ -1868,6 +1868,7 @@ int fio_set_directio(struct thread_data *td, struct fio_file *f)
 
 	return 0;
 #else
+	log_err("fio: direct IO is not supported on this host operating system\n");
 	return -1;
 #endif
 }