Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934997AbXHHOOm (ORCPT ); Wed, 8 Aug 2007 10:14:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S934688AbXHHOOW (ORCPT ); Wed, 8 Aug 2007 10:14:22 -0400 Received: from rv-out-0910.google.com ([209.85.198.188]:14204 "EHLO rv-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934421AbXHHOOU (ORCPT ); Wed, 8 Aug 2007 10:14:20 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:user-agent:mime-version:to:cc:subject:references:in-reply-to:x-enigmail-version:content-type:content-transfer-encoding; b=fZHxqQmtcfAEym/JZr0QZrfepkuY+mrUvglmcu0EcTaAUKJxuObn/4RIyCmOkPfx8NiB20fTRMQFoEVJNJM3UsSeAkZ01PkrJEkm5jdml8W++4RxDDvny+AZhYFBZsKwG1qOtQNdZADgD5LskUIr78CHP6skcH8LMHdsGuZrW6Q= Message-ID: <46B9CFB3.6020402@gmail.com> Date: Wed, 08 Aug 2007 23:14:11 +0900 From: Tejun Heo User-Agent: Icedove 1.5.0.10 (X11/20070307) MIME-Version: 1.0 To: Mark Lord CC: Michael Sedkowski , trenn@suse.de, Robert Hancock , "Rafael J. Wysocki" , Henrique de Moraes Holschuh , 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 References: <46B7AF53.1040307@shaw.ca> <46B8140E.3000509@gmail.com> <1186497925.8780.78.camel@queen.suse.de> <1186514618.5622.9.camel@nx6310> <46B9307D.3000105@gmail.com> <46B9CE79.5030307@rtr.ca> In-Reply-To: <46B9CE79.5030307@rtr.ca> X-Enigmail-Version: 0.94.2.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1458 Lines: 38 Mark Lord wrote: > Tejun Heo wrote: >> Michael Sedkowski wrote: >>> Dnia 07-08-2007, Wt o godzinie 03:43 +0900, Tejun Heo napisał(a): >>>> Does emergency unload count increase >>>> after each power down? >>> I think I got it. >>> Using smartctl I've done a test and shut down, then repeted the test. >>> The only values that where diffrent are temperatures and >>> Hardware_ECC_Recovered which rised by 6 points. >>> However I have no idea which of those is the "emergency count"... >>> Full results in attachment. >>> >>> 192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age >>> Always - 388 >> >> I think this is the one. You can test it by forcefully powering off the >> machine (press power button for several secs or disconnect AC and >> battery) and see whether the count increases. > > FWIW, Tejun, with 2.6.22, my new Seagate 160GB SATA drive (notebook) > increments the "Power-Off_Retract_Count" on each suspend-to-RAM operation. > It does not do any double spin-up/spin-down things though. > > What a mess. Hmmm.. It shouldn't. libata now issues STANDBYNOW prior to entering STR. Can you instrument code a bit and see whether it actually gets issued? Thanks. -- tejun - 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/