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

[fio.git] / filesetup.c

diff --git a/filesetup.c b/filesetup.c
index 0e5599ab16502e9541023af6028e9814f366a844..891a55a1ddb97ab30c7cc375cd9246fed21addd8 100644 (file)
--- a/filesetup.c
+++ b/filesetup.c
@@ -146,8 +146,6 @@ static int extend_file(struct thread_data *td, struct fio_file *f)
                flags |= O_CREAT;
        if (new_layout)
                flags |= O_TRUNC;
-       if (td->o.odirect)
-               flags |= OS_O_DIRECT;
 
 #ifdef WIN32
        flags |= _O_BINARY;
@@ -1845,3 +1843,32 @@ void filesetup_mem_free(void)
 {
        free_already_allocated();
 }
+
+/*
+ * This function is for platforms which support direct I/O but not O_DIRECT.
+ */
+int fio_set_directio(struct thread_data *td, struct fio_file *f)
+{
+#ifdef FIO_OS_DIRECTIO
+       int ret = fio_set_odirect(f);
+
+       if (ret) {
+               td_verror(td, ret, "fio_set_directio");
+#if defined(__sun__)
+               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");
+               }
+#else
+               log_err("fio: the file system does not seem to support direct IO\n");
+#endif
+               return -1;
+       }
+
+       return 0;
+#else
+       log_err("fio: direct IO is not supported on this host operating system\n");
+       return -1;
+#endif
+}