linux-kernel - Re: Disk spin down issue on shut down/suspend to disk

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Date:	Thu, 09 Aug 2007 01:20:24 +0900
From:	Tejun Heo <htejun@...il.com>
To:	Mark Lord <liml@....ca>
CC:	Michael Sedkowski <sedmich@...il.com>, trenn@...e.de,
	Robert Hancock <hancockr@...w.ca>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Henrique de Moraes Holschuh <hmh@....eng.br>,
	linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org,
	linux-acpi@...r.kernel.org
Subject: Re: Disk spin down issue on shut down/suspend to disk

Mark Lord wrote:
> Further to this, if I have an active-writer running at the time of suspend,
> then even my scripted "sleep 1" is not good enough, as additional writes
> are still happening before/after the flush.
> 
> Now I'll reboot and try it with the "sleep 1" hardcoded inside
> sd_suspend().

Hmmm... queue quiescing might be broken.  Can you verify there's no
command issued between STANDBYNOW1 and suspending?

-- 
tejun
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