linux-kernel - RE: [PATCH 2/2] aio: propogate post-EIOCBQUEUED errors to completion event

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Date:	Tue, 20 Feb 2007 20:17:51 +0300
From:	"Ananiev, Leonid I" <leonid.i.ananiev@...el.com>
To:	"Chris Mason" <chris.mason@...cle.com>
Cc:	"Zach Brown" <zach.brown@...cle.com>, <linux-aio@...ck.org>,
	<linux-kernel@...r.kernel.org>,
	"Benjamin LaHaise" <bcrl@...ck.org>,
	"Suparna bhattacharya" <suparna@...ibm.com>,
	"Andrew Morton" <akpm@...ux-foundation.org>
Subject: RE: [PATCH 2/2] aio: propogate post-EIOCBQUEUED errors to completion event

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@...cle.com] 
Sent: Tuesday, February 20, 2007 8:04 PM
To: Ananiev, Leonid I
Cc: Zach Brown; linux-aio@...ck.org; linux-kernel@...r.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@...el.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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