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Date: Fri, 8 Jun 2012 20:44:23 +0200
From: Jens Axboe <jaxboe@fusionio.com>
MIME-Version: 1.0
Subject: Re: Error running Fio SSD example
References: <4FC8942A.6090805@thomas-krenn.com> <4FD1F462.4070404@fusionio.com> <4FD23443.6020705@thomas-krenn.com>
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To: =?ISO-8859-15?Q?Georg_Sch=F6nberger?= <gschoenberger@thomas-krenn.com>
Cc: "fio@vger.kernel.org" <fio@vger.kernel.org>

On 2012-06-08 19:20, Georg Sch=EF=BF=BDnberger wrote:
> Am 2012-06-08 14:47, schrieb Jens Axboe:
>> On 06/01/2012 12:06 PM, Georg Sch=EF=BF=BDnberger wrote:
>>> Hello again,
>>>
>>> I am having some troubles with running the fio example "ssd-test". I
>>> changed the global section to decrease the size:
>>> [global]
>>> bs=3D4k
>>> ioengine=3Dlibaio
>>> iodepth=3D4
>>> size=3D100M
>>> direct=3D1
>>> runtime=3D60
>>> filename=3Dssd.test.file
>>>
>>> If I am running Fio I get the following error:
>>> ----------------------------------------
>>> fio.git/examples$ fio ssd-test
>>> seq-read: (g=3D0): rw=3Dread, bs=3D4K-4K/4K-4K, ioengine=3Dlibaio, iode=
pth=3D4
>>> rand-read: (g=3D1): rw=3Drandread, bs=3D4K-4K/4K-4K, ioengine=3Dlibaio,=
 iodepth=3D4
>>> seq-write: (g=3D2): rw=3Dwrite, bs=3D4K-4K/4K-4K, ioengine=3Dlibaio, io=
depth=3D4
>>> rand-write: (g=3D3): rw=3Drandwrite, bs=3D4K-4K/4K-4K, ioengine=3Dlibai=
o, iodepth=3D4
>>> fio-2.0.8
>>> Starting 4 processes
>>> fio: pid=3D17997, err=3D22/file:filesetup.c:529, func=3Dopen(ssd.test.f=
ile),
>>> error=3DInvalid argument
>>> fio: pid=3D17998, err=3D22/file:filesetup.c:529, func=3Dopen(ssd.test.f=
ile),
>>> error=3DInvalid argument
>>> fio: pid=3D17999, err=3D22/file:filesetup.c:529, func=3Dopen(ssd.test.f=
ile),
>>> error=3DInvalid argument
>>> fio: pid=3D18000, err=3D22/file:filesetup.c:529, func=3Dopen(ssd.test.f=
ile),
>>> error=3DInvalid argument
>> Looks like the file system hosting the test file does not support
>> O_DIRECT.
>>
> The file system is ext4.
> Kernel Version 3.2.0-24-generic

And you aren't running the job file in some other location? ext4 would
definitely work. Please do:

# strace -o strace.out -f fio ssd-test

and send me strace.out (gzip'ed). Also include a pwd from where you are
running it, and output of the 'mount' command.

--=20
Jens Axboe