From owner-freebsd-questions@freebsd.org Wed Aug 30 18:04:48 2017 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 31A0EE070D7 for ; Wed, 30 Aug 2017 18:04:48 +0000 (UTC) (envelope-from tetrosalame@gmail.com) Received: from mail-oi0-x22e.google.com (mail-oi0-x22e.google.com [IPv6:2607:f8b0:4003:c06::22e]) (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 E6F1775C7B for ; Wed, 30 Aug 2017 18:04:47 +0000 (UTC) (envelope-from tetrosalame@gmail.com) Received: by mail-oi0-x22e.google.com with SMTP id k77so57455829oib.2 for ; Wed, 30 Aug 2017 11:04:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=nZItwPO8ki23IU7o5fBv5WZGrH18iygcGbF1thKdpZc=; b=hctw7+KvFBDrgMYRww6miQNp7UIxVVcadLY5yvWkvhq4INi+QU1zpUF4qZRrZj9JHx 8KfXpBXD/d3IPs3A42ork2EZxqk1sVTQhV+KcWaImMAzUoCQnuCTyT6PYAsk0tUxf2qS htqVJF0Z0Yc5+V3oqf8/7wd8ddY1lom3JRjQbBvwcVjfY0F1C+2eJ3u+qf/0SQxKr36j g/mdGxw3npvQYAlH+hsTvqWaF0E26c/klGTp9VngBtzoexidKn4hYY3ABV2jpYwU6NVK poeqziWZTVQeXhdpWP41geuXjyS8Itdu8pDA9Lcu9Ub4zcFnBVK0VZRJnW2MAP4mO6vD 7/sg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=nZItwPO8ki23IU7o5fBv5WZGrH18iygcGbF1thKdpZc=; b=b/S8Vbwag4wLmsOL2CeWerV1n2p5c6+q9FnEaTMwzHfHO3AIvf9R6nv/JqW395VrkG 8d7i6c9VuyiFuVjZWBeVf+Nzzd/duUZy6sd8t3yTON3i1bfrSgO3v2E1bMTb0XfrZt2C dwdmfvhaT38frDwavFwxIAOZQD8Iv6A1u0XRPEs6m5BneQMWpA2XX0OZAppbOh4ckP+Y h7uMr/rIcwzec5a+PaMB20ItreIxfNSNFMTv3UIiB7SZ8jK8VsTbGR/wFuPudyGmf643 ddjr1RRNmSGohfHXSPhOvqGFpGnPqp+hy86Gl32tlLt/Rd2IixC5x68uOC1Z7R2/J1HT QV/g== X-Gm-Message-State: AHYfb5gpDCIf08u+QrgblIwqELMOuWy4UgVWM5ykov3mFgaDi/Omk2fv HkmZihH0y7v2l4cY X-Received: by 10.202.4.210 with SMTP id 201mr2573734oie.272.1504116286115; Wed, 30 Aug 2017 11:04:46 -0700 (PDT) Received: from avalon.thwn (host119-173-dynamic.16-79-r.retail.telecomitalia.it. [79.16.173.119]) by smtp.gmail.com with ESMTPSA id d197sm6484530oih.55.2017.08.30.11.04.44 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 30 Aug 2017 11:04:45 -0700 (PDT) Received: from avalon.thwn (localhost [127.0.0.1]) by avalon.thwn (OpenSMTPD) with ESMTP id 365d3127 for ; Wed, 30 Aug 2017 20:04:41 +0200 (CEST) Date: Wed, 30 Aug 2017 20:04:41 +0200 From: fml To: freebsd-questions@freebsd.org Subject: Re: help creating new gmirror > 2TB Message-ID: <20170830180441.GA2427@avalon.thwn> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Aug 2017 18:04:48 -0000 On Tue, Aug 29, 2017 at 04:12:12PM -0400, William Dudley wrote: > Hi, > > I want to create a simple mirror > 2TB on a FreeBSD 10.3 system. > > I have 2 identical 4TB disks. As you've been told, go with GPT partitioning: disk replacement maybe is not as easy as with MBR scheme, so backup your partition table and try to rebuild your mirror. I'm sure you know already: you need enough RAM to fsck such a large partition when things go wrong (~700MB per 1TB). f.