From owner-freebsd-stable@FreeBSD.ORG Sun Oct 21 16:40:46 2007 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 0A5EA16A46C for ; Sun, 21 Oct 2007 16:40:46 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from wa-out-1112.google.com (wa-out-1112.google.com [209.85.146.182]) by mx1.freebsd.org (Postfix) with ESMTP id 869B113C4B6 for ; Sun, 21 Oct 2007 16:40:45 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: by wa-out-1112.google.com with SMTP id k17so1049413waf for ; Sun, 21 Oct 2007 09:40:37 -0700 (PDT) Received: by 10.114.130.1 with SMTP id c1mr4091125wad.1192963493338; Sun, 21 Oct 2007 03:44:53 -0700 (PDT) Received: by 10.114.67.19 with HTTP; Sun, 21 Oct 2007 03:44:53 -0700 (PDT) Message-ID: Date: Sun, 21 Oct 2007 18:44:53 +0800 From: "Adrian Chadd" Sender: adrian.chadd@gmail.com To: "Peter Schuller" In-Reply-To: <20071021071935.GA64397@hyperion.scode.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20071021071935.GA64397@hyperion.scode.org> X-Google-Sender-Auth: 9ec242dd3efdac9a Cc: freebsd-stable@freebsd.org Subject: Re: FYI: Promise TX4 silent corruption (RELENG_7) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 21 Oct 2007 16:40:46 -0000 On 21/10/2007, Peter Schuller wrote: > However, once I started dd:ing large files and reading them back in I > started getting I/O errors from ZFS, because of checksum > mismatches. Turns out all the drives connected to the TX4 in the > raidz2 were generating checksum errors (the one that was not connected > to the TX4 was fine). Write a 2-3 gig file of zeroes -> handful of > checksum mismatches on subsequent scrub. Is there some nice utility floating about to do this in userspace on uninitialised/raw devices? Thanks, Adrian -- Adrian Chadd - adrian@freebsd.org