From owner-freebsd-current@FreeBSD.ORG Sun Mar 15 17:11:40 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 97B79106571A for ; Sun, 15 Mar 2009 17:11:40 +0000 (UTC) (envelope-from mdc@prgmr.com) Received: from mail.prgmr.com (mail.prgmr.com [64.62.173.114]) by mx1.freebsd.org (Postfix) with ESMTP id 838C48FC1E for ; Sun, 15 Mar 2009 17:11:40 +0000 (UTC) (envelope-from mdc@prgmr.com) Received: from frylock.local (unknown [66.60.140.129]) by mail.prgmr.com (Postfix) with ESMTP id 5F00F68B5B; Sun, 15 Mar 2009 10:11:40 -0700 (PDT) Message-ID: <49BD36C1.6040107@prgmr.com> Date: Sun, 15 Mar 2009 10:11:29 -0700 From: Michael David Crawford Organization: Prgmr.com User-Agent: Thunderbird 2.0.0.19 (Macintosh/20081209) MIME-Version: 1.0 To: kevin References: <49BD117B.2080706@163.com> In-Reply-To: <49BD117B.2080706@163.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: FreeBSD Current Subject: Re: ZFS data error without reasons X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 15 Mar 2009 17:11:42 -0000 kevin wrote: > Will any changes cause zfs data error?I find my disk data error without > any reasons(shutdown or reboot normally).disk was bought > yesterday. If it's really a brand-new disk, I suggest running the manufacturer's disk testing utility to see if the drive could actually be defective. Don't just depend on Open Source tools - the proprietary utilities can often access proprietary, undocumented drive firmware features that are put there specifically for diagnostic purposes, and so do a better job of testing the drive than any Open Source tool could. The problem might just be some bad sectors on your media. If that's the case, the diagnostic utility will remap the bad sectors. If the utility does report bad sector remapping, do a full scan again, and keep repeating until no more bad sectors are found. If you scan more than a couple times and bad sectors are still turning up, your drive is probably beyond repair, and should be RMAed. All the drive manufacturers provide these utilities; go to the manufacturer's website and look either in the Support link, or the Drivers and Downloads link. Hope That Helps, Mike -- Michael David Crawford mdc@prgmr.com prgmr.com - We Don't Assume You Are Stupid. Xen-Powered Virtual Private Servers: http://prgmr.com/xen