From: Jens Axboe <jens.axboe@oracle.com>
Date: Sat, 10 Feb 2007 17:57:18 +0000 (+0100)
Subject: [PATCH] File size fix on NULL io engines
X-Git-Tag: fio-1.12~112
X-Git-Url: https://git.kernel.dk/?p=fio.git;a=commitdiff_plain;h=f4ee22ca72da53e0e891693d16358296b703a684;hp=16edf25dba269ee9e8239130e75b690440b1e120

[PATCH] File size fix on NULL io engines

Just set the file sizes to the size given, it's pretend anyway.

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

diff --git a/filesetup.c b/filesetup.c
index 1f1259d1..84cd7f7d 100644
--- a/filesetup.c
+++ b/filesetup.c
@@ -154,6 +154,16 @@ static int file_size(struct thread_data *td, struct fio_file *f)
 {
 	struct stat st;
 
+	/*
+	 * if we are not doing real io, just pretend the file is as large
+	 * as the size= given. this works fine with nrfiles > 1 as well,
+	 * we only really care about it being at least as big as size=
+	 */
+	if (td->io_ops->flags & FIO_NULLIO) {
+		f->real_file_size = f->file_size = td->total_file_size;
+		return 0;
+	}
+
 	if (td->overwrite) {
 		if (fstat(f->fd, &st) == -1) {
 			td_verror(td, errno);