linux-kernel - Re: [smartmontools-support] SMART problems in 2.6.22

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Message-ID: <4693CE7A.5070502@rtr.ca>
Date:	Tue, 10 Jul 2007 14:22:50 -0400
From:	Mark Lord <lkml@....ca>
To:	Bruce Allen <ballen@...vity.phys.uwm.edu>, Mark Lord <liml@....ca>,
	David Greaves <david@...eaves.com>,
	Douglas Gilbert <dougg@...que.net>,
	Tejun Heo <htejun@...il.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Kai Makisara <Kai.Makisara@...umbus.fi>,
	Jeff Garzik <jeff@...zik.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Klaus Fuerstberger <kfuerstberger@...or.de>,
	Jan Dvorak <fermentol@...il.com>,
	Smartmontools Mailing List 
	<smartmontools-support@...ts.sourceforge.net>,
	Bruce Allen <bruce.allen@....mpg.de>
Subject: Re: [smartmontools-support] SMART problems in 2.6.22

Adam Spiers wrote:
> On Sun, Jul 08, 2007 at 08:14:10PM -0500, Bruce Allen wrote:
>> On Sun, 8 Jul 2007, Bruce Allen wrote:
>>..
>> http://article.gmane.org/gmane.linux.utilities.smartmontools/4704/match=diamondmax
>>
>> Again, this indicates that SMART is enabled.  But it's not clear what the 
>> kernel version here is.  The report indicates that the problem started 
>> with an FC7 kernel upgrade

So it's a bug in the sata_nv.c port driver.

In particular, I see this in the bug report:

>Jun 30 10:23:42 atlantic kernel: ata1: EH in ADMA mode, notifier 0x1 notifier_error 0x0 gen_ctl 0x1501000 status 0x1540 next cpb count 0x0 next cpb idx 0x0

That looks a bit strange, because the driver goes to some effort
to prevent these kind of commands from ever being issued "in ADMA mode",
precisely because there's no way to do a tf_read in that mode.

Mmm.. buggy somewhere in there.
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