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Date: Fri, 22 Aug 2014 10:24:27 -0500
From: Jens Axboe <axboe@kernel.dk>
MIME-Version: 1.0
Subject: Re: buffer_pattern usage question
References: <3DB5F5EE-7D4F-487B-B757-BAD37D041DEB@datrium.com>
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To: Surendar Chandra <surendar@datrium.com>, fio@vger.kernel.org
List-ID: <fio@vger.kernel.org>

On 2014-08-21 20:01, Surendar Chandra wrote:
> Could you please help me with this setup
>
>     filename=fio-data
>     size=4k
>     rw=write
>     buffer_pattern="HELLO"
>
> The output still continues to be pseudo random. I even tried buffer_pattern=0xDEADBEEF and other params.

It's not going to take a string, it needs to be a decimal of hexidecimal 
number. I added some code to error out if it fails parsing this now.

buffer_pattern=0xDEADBEEF should work, and does for me:

axboe@lenny:/home/axboe/git/fio $ hexdump fio-data
0000000 beef dead beef dead beef dead beef dead
*
0001000


-- 
Jens Axboe