Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934171AbXHFXp2 (ORCPT ); Mon, 6 Aug 2007 19:45:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933291AbXHFXpR (ORCPT ); Mon, 6 Aug 2007 19:45:17 -0400 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 X-Sasl-enc: vLSNj/XyKvUaX4o2JXvDeAYAPSxQ4HNnBYTeuIzXJ5Sm 1186443912 Date: Mon, 6 Aug 2007 20:45:09 -0300 From: Henrique de Moraes Holschuh To: Tejun Heo Cc: Michael Sedkowski , "Rafael J. Wysocki" , linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, linux-acpi@vger.kernel.org Subject: Re: Disk spin down issue on shut down/suspend to disk 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 Content-Disposition: inline In-Reply-To: <46B76BBC.9010107@gmail.com> X-GPG-Fingerprint: 1024D/1CDB0FE3 5422 5C61 F6B7 06FB 7E04 3738 EE25 DE3F 1CDB 0FE3 User-Agent: Mutt/1.5.16 (2007-06-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1284 Lines: 28 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/