linux-kernel - Re: training mpath to discern between SCSI errors

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Date:	Fri, 14 Jan 2011 08:45:04 +0100
From:	Hannes Reinecke <hare@...e.de>
To:	Mike Snitzer <snitzer@...hat.com>
Cc:	Jun'ichi Nomura <j-nomura@...jp.nec.com>,
	Kiyoshi Ueda <k-ueda@...jp.nec.com>, michaelc@...wisc.edu,
	tytso@....edu, linux-scsi@...r.kernel.org, jaxboe@...ionio.com,
	vst@...b.net, linux-kernel@...r.kernel.org,
	Christoph Hellwig <hch@....de>, linux-raid@...r.kernel.org,
	linux-ide@...r.kernel.org,
	device-mapper development <dm-devel@...hat.com>,
	James.Bottomley@...e.de, Sergei Shtylyov <sshtylyov@...sta.com>,
	konishi.ryusuke@....ntt.co.jp, linux-fsdevel@...r.kernel.org,
	jack@...e.cz, rwheeler@...hat.com, swhiteho@...hat.com,
	chris.mason@...cle.com, Tejun Heo <tj@...nel.org>
Subject: Re: training mpath to discern between SCSI errors

On 01/14/2011 02:09 AM, Mike Snitzer wrote:
> On Fri, Dec 17 2010 at  9:06am -0500,
> Mike Snitzer <snitzer@...hat.com> wrote:
> 
>> On Fri, Dec 17 2010 at  4:47am -0500,
>> Hannes Reinecke <hare@...e.de> wrote:
>>
>>> On 11/30/2010 11:59 PM, Mike Snitzer wrote:
>>>> Hannes,
>>>>
>>>> Any chance you've had time to fold your proposed logging changes in and
>>>> rebase this patch?  Could you post that updated patch?
>>>>
>>> yes, will be following shortly.
>>>
>>>> I'd like to help see this patch through to inclussion when 2.6.38 merge
>>>> window opens.  I can help with further review, testing and development.
>>>>
>>> Ok, thanks.
>>
>> I took some steps at furthering your work.  Here is the cover letter to
>> the patches I resently sent to dm-devel:
>> https://www.redhat.com/archives/dm-devel/2010-December/msg00090.html
>>
>> And here are the patches:
>> https://patchwork.kernel.org/patch/384612/
>> https://patchwork.kernel.org/patch/384602/
>> https://patchwork.kernel.org/patch/390882/
>>
>> Please feel free to change these how ever you see fit but your feedback
>> is really appreciated.
> 
> Hannes,
> 
> Any update?  I'd really like to see this work get upstream ASAP.  I'm
> doubtful that is possible for 2.6.38 given the merge window is likely to
> close shortly.
> 
Sorry for the late answer; the above patches somehow got lost in my
various mail folders :-(

But yes, the patchset looks okay.
Feel free to add my Acked-by: to last two.

> Regardless, if we could get consensus on this work now and then stage it
> with James that would be great.
> 
Indeed. Will you resend it to linux-scsi or shall I do it?

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		      zSeries & Storage
hare@...e.de			      +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: Markus Rex, HRB 16746 (AG Nürnberg)
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