From owner-freebsd-fs@FreeBSD.ORG Tue Jan 6 15:29:45 2015 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id C2A3FCFF for ; Tue, 6 Jan 2015 15:29:45 +0000 (UTC) Received: from mx1.internetx.com (mx1.internetx.com [62.116.129.39]) by mx1.freebsd.org (Postfix) with ESMTP id 41E5B12F for ; Tue, 6 Jan 2015 15:29:44 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mx1.internetx.com (Postfix) with ESMTP id BB83E4C4C80C; Tue, 6 Jan 2015 16:29:42 +0100 (CET) X-Virus-Scanned: InterNetX GmbH amavisd-new at ix-mailer.internetx.de Received: from mx1.internetx.com ([62.116.129.39]) by localhost (ix-mailer.internetx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id tWzQjwLv2TVi; Tue, 6 Jan 2015 16:29:40 +0100 (CET) Received: from [192.168.100.26] (pizza.internetx.de [62.116.129.3]) (using TLSv1 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by mx1.internetx.com (Postfix) with ESMTPSA id 38A9C4C4C7DD; Tue, 6 Jan 2015 16:29:40 +0100 (CET) Message-ID: <54ABFF51.50708@internetx.com> Date: Tue, 06 Jan 2015 16:29:21 +0100 From: InterNetX - Juergen Gotteswinter Reply-To: jg@internetx.com User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 MIME-Version: 1.0 To: Fervent Dissent Subject: Re: zfs corruption after controller failure References: <20FB5F2C-65D2-4F33-8D45-DD7FC34A5E2E@ultra-secure.de> <54ABFA82.2070401@internetx.com> In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Cc: freebsd-fs@freebsd.org X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 Jan 2015 15:29:45 -0000 -T is an undocumentated and so for it should be considered as unstable or even something which can easily break things. theres a reason why its not documentated very likely. dl;dr - its something i whouldnt touch... What Output do you get from a simple zpool import ? You did everything you tried until now with "readonly=on" ? If everything seems to be broken, you could give the zfs forensic scripts a try... its already broken, cant get worse anymore. Am 06.01.2015 um 16:11 schrieb Fervent Dissent: > I tried these, and some variations of them, and it gave the error the > pool does not exist. > zpool import -N -o readonly=on -f -R /pool > zpool import -N -o readonly=on -f -R /pool -F -T > > On Tue, Jan 6, 2015 at 11:08 PM, InterNetX - Juergen Gotteswinter > > wrote: > > > external usb drive (for sure cheap consumer desktop one) > > cheap (maybe even buggy) usb controller > > non-mirrored / raidz > > probably cheap hardware at all (no ecc, like rainer mentioned for example) > > what do you expect. zfs is very tolerant, but some basics should be > taken care of... > > but even with a single disk it should be possible to recover / import > the pool at least read only > > > > Am 06.01.2015 um 16:06 schrieb Fervent Dissent: > > I've had power lose before and a previous bad controller cause > multiple > > problems. The drive would disappear or go offline. I would clear > it and go > > on no problem. This is the first failure that I have not been able to > > recover from. > > > > On Tue, Jan 6, 2015 at 11:01 PM, Rainer Duffner > > > > wrote: > > > >> > >>> Am 06.01.2015 um 15:58 schrieb Fervent Dissent < > >> walkerindarkness@gmail.com >: > >>> > >>> I have a external disk that was on a cheap usb controller, that > >> controller > >>> died. > >> > >> > >> Maybe I’m mistaken, but I though that if your pool only has a > single disk > >> and that disk/pool shows errors or becomes > unreadable/corrupted/whatever > >> you cannot recover it. > >> > >> Same for not using ECC memory… > >> > >> > >> > >> > > _______________________________________________ > > freebsd-fs@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-fs > > To unsubscribe, send any mail to > "freebsd-fs-unsubscribe@freebsd.org > " > > > >