linux-kernel - Re: Drives missing at boot

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Message-ID: <4C44BD42.3030904@kernel.org>
Date:	Mon, 19 Jul 2010 23:01:54 +0200
From:	Tejun Heo <tj@...nel.org>
To:	Mark Knecht <markknecht@...il.com>
CC:	Linux Kernel List <linux-kernel@...r.kernel.org>,
	"linux-ide@...r.kernel.org" <linux-ide@...r.kernel.org>
Subject: Re: Drives missing at boot

Hello,

On 07/19/2010 09:31 PM, Mark Knecht wrote:
>    With about 10-12 day of testing, 1-2 boots/day, I've not had a
> single boot failure since adding the patch. Only twice has it said
> tries=2. Every other time it's tries=1. The machine seems to work fine
> either way.

Hmmm... can you please test the attached patch instead?  It seems
likely that the root cause is not flakiness of SIDPR but incorrect
locking in libata EH code.

Thanks.

-- 
tejun

View attachment "ata_piix-sidpr-lock.patch" of type "text/x-patch" (1610 bytes)