From owner-freebsd-current@FreeBSD.ORG Mon Sep 27 22:18:30 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 77EF916A4D0; Mon, 27 Sep 2004 22:18:30 +0000 (GMT) Received: from kestrel.alerce.com (kestrel.alerce.com [209.182.219.40]) by mx1.FreeBSD.org (Postfix) with ESMTP id D49C943D45; Mon, 27 Sep 2004 22:14:44 +0000 (GMT) (envelope-from hartzell@kestrel.alerce.com) Received: from satchel.alerce.com (w092.z064001164.sjc-ca.dsl.cnc.net [64.1.164.92]) (authenticated bits=128) by kestrel.alerce.com (8.12.10/8.12.10) with ESMTP id i8RMAsUQ072175 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Mon, 27 Sep 2004 15:10:55 -0700 (PDT) (envelope-from hartzell@kestrel.alerce.com) Received: from satchel.alerce.com (localhost [127.0.0.1]) by satchel.alerce.com (8.13.1/8.13.1) with ESMTP id i8RMBFKh001502 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Mon, 27 Sep 2004 15:11:15 -0700 (PDT) (envelope-from hartzell@satchel.alerce.com) Received: (from hartzell@localhost) by satchel.alerce.com (8.13.1/8.13.1/Submit) id i8RM7CvY001477; Mon, 27 Sep 2004 15:07:12 -0700 (PDT) (envelope-from hartzell) From: George Hartzell MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <16728.36624.795064.393488@satchel.alerce.com> Date: Mon, 27 Sep 2004 15:07:12 -0700 To: Pawel Jakub Dawidek In-Reply-To: <20040927150725.GV9550@darkness.comp.waw.pl> References: <20040927094602.GA17898@gnah.bolet.org> <20040927111734.GS9550@darkness.comp.waw.pl> <200409272339.27282.doconnor@gsoft.com.au> <20040927150725.GV9550@darkness.comp.waw.pl> X-Mailer: VM 7.17 under 21.4 (patch 15) "Security Through Obscurity" XEmacs Lucid X-Virus-Scanned: ClamAV version 'clamd / ClamAV version 0.65', clamav-milter version '0.60p' cc: Thomas Pornin cc: freebsd-current@freebsd.org Subject: Re: Software RAID1 with atacontrol X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: hartzell@kestrel.alerce.com List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 27 Sep 2004 22:18:30 -0000 Pawel Jakub Dawidek writes: > On Mon, Sep 27, 2004 at 11:39:20PM +0930, Daniel O'Connor wrote: > +> On Mon, 27 Sep 2004 20:47, Pawel Jakub Dawidek wrote: > +> > +> Therefore I think that there is something fishy here. Since the same > +> > +> code is used for Promise RAID cards, the support for those card may be > +> > +> "broken" as well (at least unreliable in case of a crash, which is a > +> > +> problem since RAID1 is meant to add reliability in case of a crash). > +> > +> What can I do to help debug this ? > +> > > +> > I can only suggest gmirror(8):) > +> > +> You can't boot from gmirror(8) with a hosed disk :( > > I wonder how BIOS react on such disk. You can setup in BIOS to boot from > 'C', 'D', etc. disks and it will be cool if 'D' can be choosen when 'C' > is broken. I have an older Supermicro system (370DER) with a built in two-channel scsi controller. It'll happily boot from whatever scsi device I give it. I have a pair of disks on channel-A, mirrored using gmirror (da0s1 and da1s1 are the providers) and it'll happily boot from either. Not quite as nice as automaticall falling-over, but close enough for my particular use. g.