linux-kernel - Re: MD/RAID time out writing superblock

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Message-ID: <4AAE3B9A.2060306@rtr.ca>
Date:	Mon, 14 Sep 2009 08:48:26 -0400
From:	Mark Lord <liml@....ca>
To:	Tejun Heo <teheo@...e.de>
Cc:	Chris Webb <chris@...chsys.com>, linux-scsi@...r.kernel.org,
	Ric Wheeler <rwheeler@...hat.com>,
	Andrei Tanas <andrei@...as.ca>, NeilBrown <neilb@...e.de>,
	linux-kernel@...r.kernel.org,
	IDE/ATA development list <linux-ide@...r.kernel.org>,
	Jeff Garzik <jgarzik@...hat.com>, Mark Lord <mlord@...ox.com>
Subject: Re: MD/RAID time out writing superblock

Tejun Heo wrote:
..
> Oooh, another possibility is the above continuous IDENTIFY tries.
> Doing things like that generally isn't a good idea because vendors
> don't expect IDENTIFY to be mixed regularly with normal IOs and
> firmwares aren't tested against that.  Even smart commands sometimes
> cause problems.  So, finding out the thing which is obsessed with the
> identity of the drive and stopping it might help.
..

Bullpucky.  That sort of thing, specifically with IDENTIFY,
has never been an issue.

I wonder if the IDENTIFY is actually coming from libata EH
after something else failed ?
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