From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262584AbVGMKWT (ORCPT ); Wed, 13 Jul 2005 06:22:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262602AbVGMKVc (ORCPT ); Wed, 13 Jul 2005 06:21:32 -0400 Received: from ws6-4.us4.outblaze.com ([205.158.62.107]:36805 "HELO ws6-4.us4.outblaze.com") by vger.kernel.org with SMTP id S262584AbVGMKVa (ORCPT ); Wed, 13 Jul 2005 06:21:30 -0400 Message-ID: <42D4EB21.1060305@grimmer.com> Date: Wed, 13 Jul 2005 12:21:21 +0200 From: Lenz Grimmer User-Agent: Mozilla Thunderbird 1.0.2 (X11/20050322) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Jan Engelhardt CC: Gijs Hillenius , Frank Sorenson , hdaps-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org Subject: Re: [Hdaps-devel] Re: Updating hard disk firmware & parking hard disk References: <20050707171434.90546.qmail@web32604.mail.mud.yahoo.com> <42CD7E0C.3060101@tuxrocks.com> <878y0bozf8.fsf@hillenius.net> In-Reply-To: X-Enigmail-Version: 0.92.0.0 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 Jan Engelhardt wrote: > Head parking while the system running is almost useless, since sooner or > later, someone's going to write/read something. Correct, that's why we're discussing to freeze the request queue as well. > If you want head parking at shutdown, I suggest using hdparm -y. This puts the > drive to sleep, which includes spindle spindown and, included, appropriate > head parking. But it suffers from the same fate - as soon as the disk receives a new request, it will spin up again. So there is no gain, except that just parking the head without spinning down the spindle can be performed much faster. 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 iD8DBQFC1OseSVDhKrJykfIRAnk3AJ9EqLIBprtaYikZCQaRdIpPOrOWiACeMXOC pwjn2afI737DDzqOKDaEUCA= =JtxS -----END PGP SIGNATURE-----