Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753575Ab0BQShV (ORCPT ); Wed, 17 Feb 2010 13:37:21 -0500 Received: from dsl-67-204-24-19.acanac.net ([67.204.24.19]:51368 "EHLO emergent.ellipticsemi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751863Ab0BQShT (ORCPT ); Wed, 17 Feb 2010 13:37:19 -0500 Date: Wed, 17 Feb 2010 13:37:03 -0500 From: Nick Bowler To: Volker Armin Hemmann Cc: david@lang.hm, Kyle Moffett , Rudy Zijlstra , Neil Brown , "Mr. James W. Laferriere" , Bill Davidsen , Michael Evans , linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org Subject: Re: Linux mdadm superblock question. Message-ID: <20100217183703.GA15446@emergent.ellipticsemi.com> Mail-Followup-To: Volker Armin Hemmann , david@lang.hm, Kyle Moffett , Rudy Zijlstra , Neil Brown , "Mr. James W. Laferriere" , Bill Davidsen , Michael Evans , linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org References: <201002140251.59668.volkerarmin@googlemail.com> <20100217181016.GA14983@emergent.ellipticsemi.com> <201002171927.07051.volkerarmin@googlemail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201002171927.07051.volkerarmin@googlemail.com> Organization: Elliptic Technologies Inc. User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1627 Lines: 36 On 19:27 Wed 17 Feb , Volker Armin Hemmann wrote: > On Mittwoch 17 Februar 2010, Nick Bowler wrote: > > On 09:41 Wed 17 Feb , david@lang.hm wrote: > > > for a distro that is trying to make one kernel image run on every > > > possible type of hardware features like initramfs (and udev, modeules, > > > etc) are wonderful. > > > > > > however for people who run systems that are known ahead of time and > > > static (and who build their own kernels instead of just relying on the > > > distro default kernel), all of this is unnessesary complication, which > > > leaves more room for problems to creep in. > > > > Such people can easily construct an initramfs containing busybox and > > mdadm with a shell script hardcoded to mount their root fs and run > > switch_root. It's a ~10 minute jobbie that only needs to be done once. > > and even better when you don't have to do that one time job at all. But people who are building their own kernels are already doing a (much harder, imo) one time job of configuring their kernels. > btw, what about additional delay? It takes about half a second for mdadm to assemble my root array, is that what you're referring to? I assume that kernel auto-assembly is no faster, although I've never used it. Regardless, half a second isn't very long to wait. -- Nick Bowler, Elliptic Technologies (http://www.elliptictech.com/) -- 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/