From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2992911AbXDRW67 (ORCPT ); Wed, 18 Apr 2007 18:58:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933075AbXDRW66 (ORCPT ); Wed, 18 Apr 2007 18:58:58 -0400 Received: from shawidc-mo1.cg.shawcable.net ([24.71.223.10]:43591 "EHLO pd2mo2so.prod.shaw.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933079AbXDRW64 (ORCPT ); Wed, 18 Apr 2007 18:58:56 -0400 Date: Wed, 18 Apr 2007 16:58:17 -0600 From: Robert Hancock Subject: Re: Loud "pop" coming from hard drive on reboot In-reply-to: To: Stephen.Clark@seclark.us, linux-kernel Cc: Alan Cox Message-id: <4626A289.2080208@shaw.ca> MIME-version: 1.0 Content-type: text/plain; charset=ISO-8859-1; format=flowed Content-transfer-encoding: 7bit References: User-Agent: Thunderbird 1.5.0.10 (Windows/20070221) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Stephen Clark wrote: > So this is the pop I hear on my new laptop that is using > libata=combined_mode > when I shut my system down. I didn't get the pop with the same disk > drive in an older > laptop that was only ide. It sounds like a relay closing or opening, but > is really my > drive head doing an emergency retract/park? Yes, that would be what it is, and why. I would vote that the sd stop-on-shutdown patch should go in, and possibly with the new behavior enabled by default. Surely the number of people running Linux on a laptop (or any other system with load/unload head technology drives) is much greater than the number of people running a SAN, multi-initiator, etc. environment where you might not want this.. -- Robert Hancock Saskatoon, SK, Canada To email, remove "nospam" from hancockr@nospamshaw.ca Home Page: http://www.roberthancock.com/