From: Sam Zaydel <szaydel@gmail.com>
Date: Wed, 16 Nov 2016 18:16:55 +0000 (-0800)
Subject: Improve informativeness about directIO support or rather lackthereof on Solaris when... 
X-Git-Tag: fio-2.16~21
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=42f1ee68ceec87fbbfdc4972c35d3cdf7c08d9f6

Improve informativeness about directIO support or rather lackthereof on Solaris when errno is set to ENOTTY
---

diff --git a/ioengines.c b/ioengines.c
index ae55f951..4c53fe55 100644
--- a/ioengines.c
+++ b/ioengines.c
@@ -483,7 +483,12 @@ int td_io_open_file(struct thread_data *td, struct fio_file *f)
 
 		if (ret) {
 			td_verror(td, ret, "fio_set_odirect");
-			log_err("fio: the file system does not seem to support direct IO\n");
+			if (ret == ENOTTY) { /* ENOTTY suggests RAW device or ZFS */
+				log_err("fio: doing directIO to RAW devices or ZFS not supported\n");
+			} else {
+				log_err("fio: the file system does not seem to support direct IO\n");
+			}
+
 			goto err;
 		}
 	}