From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261248AbVGGIlm (ORCPT ); Thu, 7 Jul 2005 04:41:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261251AbVGGIll (ORCPT ); Thu, 7 Jul 2005 04:41:41 -0400 Received: from ws6-4.us4.outblaze.com ([205.158.62.107]:59798 "HELO ws6-4.us4.outblaze.com") by vger.kernel.org with SMTP id S261248AbVGGIlZ (ORCPT ); Thu, 7 Jul 2005 04:41:25 -0400 Message-ID: <42CCEAA7.1010807@grimmer.com> Date: Thu, 07 Jul 2005 10:41:11 +0200 From: Lenz Grimmer User-Agent: Mozilla Thunderbird 1.0.2 (X11/20050322) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Jens Axboe CC: Arjan van de Ven , Alejandro Bonilla , Jesper Juhl , Dave Hansen , hdaps-devel@lists.sourceforge.net, LKML List Subject: Re: Head parking (was: IBM HDAPS things are looking up) References: <42C8D06C.2020608@grimmer.com> <20050704061713.GA1444@suse.de> <42C8C978.4030409@linuxwireless.org> <20050704063741.GC1444@suse.de> <1120461401.3174.10.camel@laptopd505.fenrus.org> <20050704072231.GG1444@suse.de> <1120462037.3174.25.camel@laptopd505.fenrus.org> <20050704073031.GI1444@suse.de> <42C91073.80900@grimmer.com> <20050704110604.GL1444@suse.de> <20050707080323.GF1823@suse.de> In-Reply-To: <20050707080323.GF1823@suse.de> X-Enigmail-Version: 0.91.0.0 OpenPGP: id=B27291F2 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, Jens Axboe wrote: > ATA7 defines a park maneuvre, I don't know how well supported it is > yet though. You can test with this little app, if it says 'head > parked' it works. If not, it has just idled the drive. Great! Thanks for digging this up - it works on my T42, using a Fujitsu MHT2080AH drive: lenz@metis:~/work/ibm_hdaps> sudo ./headpark /dev/hda head parked Judging from the sound the drive makes, this is the same operation that the windows tool performs. However, the head does not remain parked for a very long time, especially if there is a lot of disk activity going on (I tested it by running a "find /" in parallel). The head parks, but leaves the park position immediately afterwards again. I guess now we need to find a way to "nail" the head into the parking position for some time - otherwise it may already be on its way back to the platter before the laptop hits the ground... Thanks again - this is another helpful bit in getting all the pieces together. Bye, LenZ - -- - ------------------------------------------------------------------ Lenz Grimmer -o) [ICQ: 160767607 | Jabber: LenZGr@jabber.org] /\\ http://www.lenzg.org/ V_V -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFCzOqlSVDhKrJykfIRAlm0AJ9WvadtsxAdLdTCe40N/KDbvSLf5wCdEWWA OsiXzwFjziNuKvK5HKSMjb4= =qXXH -----END PGP SIGNATURE-----