From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264346AbUGIFah (ORCPT ); Fri, 9 Jul 2004 01:30:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264367AbUGIFag (ORCPT ); Fri, 9 Jul 2004 01:30:36 -0400 Received: from host84.200-117-131.telecom.net.ar ([200.117.131.84]:30641 "EHLO smtp.bensa.ar") by vger.kernel.org with ESMTP id S264346AbUGIFae (ORCPT ); Fri, 9 Jul 2004 01:30:34 -0400 From: Norberto Bensa To: linux-kernel@vger.kernel.org Subject: Re: raidstart used deprecated START_ARRAY ioctl Date: Fri, 9 Jul 2004 02:30:24 -0300 User-Agent: KMail/1.6.2 Cc: Neil Brown References: <200407090135.12493.norberto+linux-kernel@bensa.ath.cx> <16622.11173.888745.161113@cse.unsw.edu.au> In-Reply-To: <16622.11173.888745.161113@cse.unsw.edu.au> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200407090230.24696.norberto+linux-kernel@bensa.ath.cx> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hello Neil, Neil Brown wrote: > On Friday July 9, norberto+linux-kernel@bensa.ath.cx wrote: > > Hello, > > > > What does this mean and how do I fix it? > > If you have a degraded array, there is at-least and even chance that > raidstart will not successfully start it for you. Aha. It didn't start the array when I compiled md and raid0 built-in; that's how I discovered this. It works as modules (weird to me, but I'm not a kernel guru) > So, you should stop using raidstart. Ok. > The options are: > > 1/ use "autodetect". I'm not a big fan of this personally, but it is > much more reliable than START_ARRAY. I already have. But Gentoo uses raidstart (This is pure guessing, I need to dig into the init scripts. > This is done by set the partition type of all partitions that > contain part of an MD array to "Linux Raid Autodetect" (0xFD). > Then all arrays are found and assembled at boot time. > This requires having all of md (that you need) compiled into the > kernel, not as modules. Did I get that right? Can I get rid of raidstart and the array will be "assembled by the kernel"? > 2/ use mdadm. Read the man page about ASSEMBLE MODE. > You have an /etc/mdadm.conf that lists > - devices (or partitions) to scan > - arrays to be started > - UUID of each array > > and mdadm will find and assemble the arrays. I think I have read something about mdadm in Gentoo docs somewhere. I really need to check that out. Thanks Neil. Best regards, Norberto