From owner-freebsd-fs@FreeBSD.ORG Tue Jan 6 15:09:20 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 6AACB685 for ; Tue, 6 Jan 2015 15:09:20 +0000 (UTC) Received: from mx1.internetx.com (mx1.internetx.com [62.116.129.39]) by mx1.freebsd.org (Postfix) with ESMTP id 1F49C1D58 for ; Tue, 6 Jan 2015 15:09:19 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mx1.internetx.com (Postfix) with ESMTP id 139704C4C8E6; Tue, 6 Jan 2015 16:09:17 +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 F77W6Q2N6kon; Tue, 6 Jan 2015 16:09:08 +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 9B0344C4C7D6; Tue, 6 Jan 2015 16:09:08 +0100 (CET) Message-ID: <54ABFA82.2070401@internetx.com> Date: Tue, 06 Jan 2015 16:08:50 +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 , Rainer Duffner Subject: Re: zfs corruption after controller failure References: <20FB5F2C-65D2-4F33-8D45-DD7FC34A5E2E@ultra-secure.de> 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 15:09:20 -0000 > 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" >