linux-kernel - Re: burning small isos repeatedly failing with hangcheck error

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Date:	Wed, 12 May 2010 20:19:15 -0600
From:	Robert Hancock <hancockrwd@...il.com>
To:	Thomas Fjellstrom <tfjellstrom@...angesoft.net>
Cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-ide@...r.kernel.org, linux-scsi@...r.kernel.org,
	Jens Axboe <jens.axboe@...cle.com>
Subject: Re: burning small isos repeatedly failing with hangcheck error

On Wed, May 12, 2010 at 8:14 PM, Robert Hancock <hancockrwd@...il.com> wrote:
> On Wed, May 12, 2010 at 7:19 PM, Thomas Fjellstrom
> <tfjellstrom@...angesoft.net> wrote:
>>> > I do not recall having these issues with older kernels.
>>>
>>> Same wodim version? The commands (and ordering thereof) it is issuing
>>> could have an effect on this..
>>
>> I can't be certain that its the same version of wodim. I have often noticed
>> that it takes far longer to burn a small iso onto a DVDR than you'd
>> intuitively think it would, but I've never had this timeout error happen
>> prior to 2.6.33, not that that means the problem started with 2.6.33, I
>> can't recall how long its been since I last had to burn a really small iso
>> to a DVDR.
>>
>> I can try and test various versions of the kernel and wodim, if you think it
>> would help.
>
> I think different wodim versions (or try different software like
> growisofs, etc) would be the most promising option. There's really not
> a lot of influence the kernel has on this process, the burning
> software accesses the device with SG_IO which pretty much just passes
> ATAPI commands through to the drive.
>
> I thought I saw a report recently that some version of wodim was
> sending uninitialized values as the timeout for SG_IO commands, but I
> can't seem to find that mail at the moment..

Found the thread I was thinking of. It was growisofs that was
apparently doing that, though, not wodim:

http://lkml.org/lkml/2010/4/27/410
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