linux-kernel - Re: Loud "pop" coming from hard drive on reboot

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Date:	Wed, 18 Apr 2007 13:19:03 -0400
From:	Mark Lord <liml@....ca>
To:	Stephen.Clark@...lark.us
Cc:	Tejun Heo <htejun@...il.com>, Alan Cox <alan@...rguk.ukuu.org.uk>,
	7eggert@....de, Chuck Ebbert <cebbert@...hat.com>,
	emisca <emisca.ml@...il.com>,
	Jan Engelhardt <jengelh@...ux01.gwdg.de>,
	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-ide@...r.kernel.org, Adrian Bunk <bunk@...sta.de>,
	Andrew Morton <akpm@...l.org>
Subject: Re: Loud "pop" coming from hard drive on reboot

Mark Lord wrote:
> 
> With the patch applied, I don't see *any* new activity in those S.M.A.R.T.
> attributes over multiple hibernates (Linux "suspend-to-disk").

Scratch that -- operator failure.  ;)
The patch makes no difference over hibernates in the SMART logs.

It's still logging extra Power-Off_Retract_Count pegs,
which it DID NOT USED TO DO not so long ago.

Now I'll poke at the shutdown again.

Meanwhile, Stephen:  Could you try without this line in the patched file:

        case ATA_16:
+               dev->needs_sync_cache = 1;

Ie. comment out that last "dev->needs_sync_cache" line.

Cheers
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