From owner-freebsd-stable@FreeBSD.ORG Wed May 11 17:43:03 2005 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 177C516A4CE for ; Wed, 11 May 2005 17:43:03 +0000 (GMT) Received: from mta11.adelphia.net (mta11.adelphia.net [68.168.78.205]) by mx1.FreeBSD.org (Postfix) with ESMTP id 83DDE43D73 for ; Wed, 11 May 2005 17:43:02 +0000 (GMT) (envelope-from security@jim-liesl.org) Received: from daemon.jim-liesl.org ([70.33.46.68]) by mta11.adelphia.net ESMTP <20050511174301.NVHQ13270.mta11.adelphia.net@daemon.jim-liesl.org>; Wed, 11 May 2005 13:43:01 -0400 Received: from daemon.jim-liesl.org (localhost.clspco.adelphia.net [127.0.0.1]) by daemon.jim-liesl.org (Postfix) with ESMTP id 70F0062CA; Wed, 11 May 2005 11:43:04 -0600 (MDT) Received: from [127.0.0.1] (unknown [192.168.1.10]) by daemon.jim-liesl.org (Postfix) with ESMTP id 199E7625A; Wed, 11 May 2005 11:43:04 -0600 (MDT) Message-ID: <428243EA.9070707@jim-liesl.org> Date: Wed, 11 May 2005 11:42:02 -0600 From: secmgr User-Agent: Mozilla Thunderbird 0.8 (Windows/20040913) X-Accept-Language: en-us, en MIME-Version: 1.0 To: peter.orlowski@physik.tu-berlin.de References: <8b6eae96050510071037d3b6e4@mail.gmail.com> <4280C277.4030904@jim-liesl.org> <27C1250C-9BFD-4FA8-876C-09DF5504B058@isncom.com> <4280EE3C.8050505@jim-liesl.org> <20050511095142.GA12629@ella.physik.tu-berlin.de> In-Reply-To: <20050511095142.GA12629@ella.physik.tu-berlin.de> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: ClamAV using ClamSMTP cc: freebsd-stable@freebsd.org Subject: Re: State of gvinum RELENG_5 or RELENG_5_4 ?! X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 11 May 2005 17:43:03 -0000 Peter Orlowski wrote: >On Tue, May 10, 2005 at 11:24:12AM -0600, secmgr wrote: > > >>Gabor Esperon wrote: >> >> >>>How reliable is the gmirror subsystem? >>> >>> >>gmirror seems fine as best as I can tell. I've been running it for a >>few months on sata drives. >> >> > >I had gmirror running on two IDE drives for system and two SATA >drives for user data. That was RELENG_5_3. When one of the SATA >drives broke (later I got errors like > >ad4: FAILURE - READ_DMA status=51 > >on fscking) the whole system just stopped. I could switch >consoles but nothing else. Nothing in the logs either. I believe >it had lost all it's file systems. > >After power cycling, both mirrors were found but marked as broken. >Gmirror chose the defective SATA disk as the intact one and started >rebuilding the mirror from that - but fscking the mirror failed, >obviously, so I ended up with one disk that was broken, but marked intact >by gmirror and one disk the other way round. > >I had to erase the gmirror metadata on the intact disk to get it >to work again. > >I'd say gmirror will save your data but it won't save you from some >downtime... > >Greetings, Peter > > > What steps did you take to the gmirror the disk so you could get your data back? At this point, I'm thinking that as far as S/W RAID goes in FreeBSD, the "R" is pretty meaningless jim