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Subject: RE: [PATCH 2/2] aio: propogate post-EIOCBQUEUED errors to completion event
Date: Tue, 20 Feb 2007 20:17:51 +0300
Message-ID: <B41635854730A14CA71C92B36EC22AAC871D9D@mssmsx411>
In-Reply-To: <20070220170335.GR6133@think.oraclecorp.com>
Thread-Topic: [PATCH 2/2] aio: propogate post-EIOCBQUEUED errors to completion event
Thread-Index: AcdVEZVsmYpe/bSPRNiTFsq500HwRQAAE19w
From: "Ananiev, Leonid I" <leonid.i.ananiev@intel.com>
To: "Chris Mason" <chris.mason@oracle.com>
Cc: "Zach Brown" <zach.brown@oracle.com>, <linux-aio@kvack.org>,
       <linux-kernel@vger.kernel.org>, "Benjamin LaHaise" <bcrl@kvack.org>,
       "Suparna bhattacharya" <suparna@in.ibm.com>,
       "Andrew Morton" <akpm@linux-foundation.org>
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1581
Lines: 40

aio-stress command lines used for test
1) mem=1G in kernel boot param if you have more
2) mk2fs for test_file
3) dd if=/dev/zero of=<test_file> bs=1M count=1200
4) aiostress -s 1200m -o 2 -i 1 -r 16k <test_file>

Leonid
-----Original Message-----
From: Chris Mason [mailto:chris.mason@oracle.com] 
Sent: Tuesday, February 20, 2007 8:04 PM
To: Ananiev, Leonid I
Cc: Zach Brown; linux-aio@kvack.org; linux-kernel@vger.kernel.org;
Benjamin LaHaise; Suparna bhattacharya; Andrew Morton
Subject: Re: [PATCH 2/2] aio: propogate post-EIOCBQUEUED errors to
completion event

On Tue, Feb 20, 2007 at 07:57:49PM +0300, Ananiev, Leonid I wrote:
> Zach> This addresses an oops reported by Leonid Ananiev
> <leonid.i.ananiev@intel.com>
> Zach> as archived at http://lkml.org/lkml/2007/2/8/337.
> ....
> Zach> This was tested by running O_DIRECT aio-stress concurrently with
> buffered reads
> 
> The oops was with aio-stress only running in the loop
> WITHOUT buffered or mmaped IO which are patched and discussed now.
> Actually 47% aio is finished with EIO after patch.

I looked through the thread and couldn't find the aio-stress command
line used for the whole test.  Could you please post it here?

If aio+dio is being used to extend the file, you'll get pages in the
page cache, which is hopefully why you're able to trigger the EIOs.

-chris
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