From owner-freebsd-hackers@FreeBSD.ORG Tue Jul 12 02:08:41 2005 Return-Path: X-Original-To: freebsd-hackers@freebsd.org Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B96CD16A41C for ; Tue, 12 Jul 2005 02:08:41 +0000 (GMT) (envelope-from gpt@tirloni.org) Received: from srv-03.bs2.com.br (srv-03.bs2.com.br [200.203.183.32]) by mx1.FreeBSD.org (Postfix) with ESMTP id 53CEF43D48 for ; Tue, 12 Jul 2005 02:08:40 +0000 (GMT) (envelope-from gpt@tirloni.org) Received: from localhost (localhost.bs2.com.br [127.0.0.1]) by srv-03.bs2.com.br (Postfix) with ESMTP id 956FB4AE26 for ; Mon, 11 Jul 2005 23:08:55 -0300 (BRT) Received: from webmail.bs2.com.br (srv-01-j01.bs2.com.br [200.203.183.38]) by srv-03.bs2.com.br (Postfix) with ESMTP id 482DB4AE25 for ; Mon, 11 Jul 2005 23:08:55 -0300 (BRT) Received: from 201.11.22.205 (SquirrelMail authenticated user gpt@tirloni.org) by webmail.bs2.com.br with HTTP; Mon, 11 Jul 2005 23:08:35 -0300 (BRT) Message-ID: <1473.201.11.22.205.1121134115.squirrel@webmail.bs2.com.br> Date: Mon, 11 Jul 2005 23:08:35 -0300 (BRT) From: "Giovanni P. Tirloni" To: freebsd-hackers@freebsd.org User-Agent: SquirrelMail/1.4.4 MIME-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Priority: 3 (Normal) Importance: Normal Subject: Odd ataraid situation X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Jul 2005 02:08:41 -0000 Hi, I've to start working on a new server right now that should use ataraid for RAID mirroring but the customer shipped a box with only one disk and the second one won't arrive soon for many reasons. I know ataraid can't build a RAID mirror without two disks and I've already checked both atacontrol.c and ata-raid.c. It's clear it needs two disks and I'm no guru to do anything about it right now since the disk would arrive before I had done any coding. But I'd like to ask if it'd theoretically be possible to create the RAID1 array (ar0) with only one disk and add the second one later? It'd work like a broken array for some time. It's just an idea :) Thanks, -- Giovanni P. Tirloni