From mboxrd@z Thu Jan 1 00:00:00 1970 From: Henrique de Moraes Holschuh Subject: Re: Disk spin down issue on shut down/suspend to disk Date: Mon, 6 Aug 2007 20:45:09 -0300 Message-ID: <20070806234509.GC27640@khazad-dum.debian.net> References: <838f88840708051428p3d65ff42w627af4bc38f57de3@mail.gmail.com> <1186411815.4355.7.camel@nx6310> <20070806150159.GC31615@khazad-dum.debian.net> <200708061732.03425.rjw@sisk.pl> <46B75459.9020204@gmail.com> <1186424492.4355.1.camel@nx6310> <46B76BBC.9010107@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from out2.smtp.messagingengine.com ([66.111.4.26]:44447 "EHLO out2.smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933144AbXHFXpO (ORCPT ); Mon, 6 Aug 2007 19:45:14 -0400 Content-Disposition: inline In-Reply-To: <46B76BBC.9010107@gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Tejun Heo Cc: Michael Sedkowski , "Rafael J. Wysocki" , linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, linux-acpi@vger.kernel.org On Tue, 07 Aug 2007, Tejun Heo wrote: > Michael Sedkowski wrote: > >> Hmmm... If the problem only shows up on nx6325, it might be that ACPI is > >> pulling unnecessary stunt. Please apply the attached patch and report > >> when the disk spins down and up. > > > > Disk spins down on "Pre-shutdown prepare" and then goes up and down on > > "Power down". > > Oh... crap, so acpi wants to sync cache on shutdown. I wonder whether > it spins down the disk correctly. Does emergency unload count increase > after each power down? Also, please post the result of 'dmidecode'. You know, this actually make a lot of sense, and one can't even complain about firmware that pulls that off. Any chances of changing things so that we inspect/snoop all tasks sent to the device, and filter them out, or react to them accordingly? -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh