From owner-freebsd-questions@freebsd.org Sun Jun 28 21:17:05 2015 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 1846698FF02 for ; Sun, 28 Jun 2015 21:17:05 +0000 (UTC) (envelope-from chrisstankevitz@gmail.com) Received: from mail-la0-x236.google.com (mail-la0-x236.google.com [IPv6:2a00:1450:4010:c03::236]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 95F701CDC for ; Sun, 28 Jun 2015 21:17:04 +0000 (UTC) (envelope-from chrisstankevitz@gmail.com) Received: by lagh6 with SMTP id h6so32979715lag.2 for ; Sun, 28 Jun 2015 14:17:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=+dKaBiAgrP46eqkABpW7qbJ02SBjGL6dt3Wx9dhjEcI=; b=dwdHseMrRpxoYw7fT8m9afyZDUOlIQwtltOB8s25dBpvBFxZJ19LQfLyvq6nw3M9Qh hFNH4coxI2YoIynSCjMdXYoHtcWJnkxHpmN+KY6LZVAEoPmcjlPOce+RS6B7ECZQcXRW u0AIe5hBFBoRM9W+LyDlFDKax3o1ipXppCiEni7vF/bkPU1/x70j/FbIZs7uAaDKou5p rXETV2LfGc8pSYDZ0fLVedlumzgkVGLc+cG5GKqlVWyAW0Lyjpmy5lsnLmIP/jJVtNwe 8KkmhcVenlOnisoNM1lR4y7ObjWjPE6cPt9jG0hlvEFfaGTRcQJZZgPtYwlzkIlfpnUC grCQ== MIME-Version: 1.0 X-Received: by 10.153.8.171 with SMTP id dl11mr11383782lad.77.1435526222769; Sun, 28 Jun 2015 14:17:02 -0700 (PDT) Received: by 10.25.42.146 with HTTP; Sun, 28 Jun 2015 14:17:02 -0700 (PDT) In-Reply-To: References: Date: Sun, 28 Jun 2015 14:17:02 -0700 Message-ID: Subject: Re: Corrupt GPT on ZFS full-disks that shouldn't be using GPT From: Chris Stankevitz To: Warren Block Cc: freebsd-questions Content-Type: text/plain; charset=UTF-8 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 28 Jun 2015 21:17:05 -0000 On Sat, Jun 27, 2015 at 11:26 PM, Warren Block wrote: > Erasing just the last block would probably be enough. Still, the only > reason to be afraid of it is if you do not have a full backup. And if you > don't have a full backup, that is the first thing to do. Warren, Thank you. I do indeed have backups so perhaps I shouldn't be afraid to just experiment... especially if I experiment only on one of my raidz3 drives. Do I need to export the pool before using dd on the raw device? Chris