From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262321AbVGGXGG (ORCPT ); Thu, 7 Jul 2005 19:06:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261476AbVGGXDx (ORCPT ); Thu, 7 Jul 2005 19:03:53 -0400 Received: from rutherford.zen.co.uk ([212.23.3.142]:17057 "EHLO rutherford.zen.co.uk") by vger.kernel.org with ESMTP id S262235AbVGGXCH (ORCPT ); Thu, 7 Jul 2005 19:02:07 -0400 Message-ID: <42CDB3F9.5010402@dresco.co.uk> Date: Fri, 08 Jul 2005 00:00:09 +0100 From: Jon Escombe User-Agent: Mozilla Thunderbird 1.0.2-6 (X11/20050513) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Jens Axboe CC: Shawn Starr , hdaps-devel@lists.sourceforge.net, Lenz Grimmer , Arjan van de Ven , Alejandro Bonilla , Jesper Juhl , Dave Hansen , LKML List Subject: Re: IBM HDAPS things are looking up (was: Re: [Hdaps-devel] Re: [ltp] IBM HDAPS Someone interested? (Accelerometer)) References: <42C8D06C.2020608@grimmer.com> <20050704110604.GL1444@suse.de> <20050707080323.GF1823@suse.de> <200507071028.06765.spstarr@sh0n.net> <20050707150548.GD24401@suse.de> In-Reply-To: <20050707150548.GD24401@suse.de> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Hops: 1 X-Originating-Rutherford-IP: [82.68.23.174] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Jens Axboe wrote: >On Thu, Jul 07 2005, Shawn Starr wrote: > > >>Model: HTS548080M9AT00 (Hitachi) >>Laptop: T42. >> >>segfault:/home/spstarr# ./a /dev/hda >>head parked >> >>Seems to park, heard it click :) >> >> > >Note on that - if the util says it parked, you can be very sure that it >actually did as the drive actually returns that status outside of just >completing the command. > > It's worth noting that you'll need the libata passthrough patch to make this work on a T43.. However, with this patch I'm getting the "head not parked 4c" message, but I can hear the click from the drive.. It takes around 350-400ms for the command to execute, but when repeated, it drops to around 5ms for a short while (with no audible clicking), before reverting to original behaviour after a few seconds. The clicking and the variation in execution time lead me to think it is parking, but not being reported correctly? Regards, Jon, ______________________________________________________________ Email via Mailtraq4Free from Enstar (www.mailtraqdirect.co.uk)