From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 20 Nov 2002 18:42:13 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 20 Nov 2002 18:42:02 -0500 Received: from gate.in-addr.de ([212.8.193.158]:1034 "HELO mx.in-addr.de") by vger.kernel.org with SMTP id ; Wed, 20 Nov 2002 18:41:58 -0500 Date: Thu, 21 Nov 2002 00:30:20 +0100 From: Lars Marowsky-Bree To: Steven Dake , Neil Brown Cc: linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org Subject: Re: RFC - new raid superblock layout for md driver Message-ID: <20021120233020.GE29881@marowsky-bree.de> References: <15835.2798.613940.614361@notabene.cse.unsw.edu.au> <3DDBC0D9.5030904@mvista.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <3DDBC0D9.5030904@mvista.com> User-Agent: Mutt/1.4i X-Ctuhulu: HASTUR Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 2002-11-20T10:05:29, Steven Dake said: > This could be done without this field, but then the RAID arrays could be > started unintentionally by the wrong host. Imagine a host starting the > wrong RAID array while it has been already started by some other party > (forcing a rebuild) ugh! This is already easy and does not require addition of a field to the md superblock. Just only explicitly start disks with the proper uuid in the md superblock. Don't simply start them all. (I'll reply to Neil's mail momentarily) Sincerely, Lars Marowsky-Brée -- Principal Squirrel SuSE Labs - Research & Development, SuSE Linux AG "If anything can go wrong, it will." "Chance favors the prepared (mind)." -- Capt. Edward A. Murphy -- Louis Pasteur