From owner-freebsd-questions@FreeBSD.ORG Thu Jul 12 19:57:01 2012 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 94CA6106566B for ; Thu, 12 Jul 2012 19:57:01 +0000 (UTC) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Received: from wojtek.tensor.gdynia.pl (wojtek.tensor.gdynia.pl [89.206.35.99]) by mx1.freebsd.org (Postfix) with ESMTP id DDAFC8FC17 for ; Thu, 12 Jul 2012 19:57:00 +0000 (UTC) Received: from wojtek.tensor.gdynia.pl (localhost [127.0.0.1]) by wojtek.tensor.gdynia.pl (8.14.5/8.14.5) with ESMTP id q6CJut2B003574; Thu, 12 Jul 2012 21:56:55 +0200 (CEST) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Received: from localhost (wojtek@localhost) by wojtek.tensor.gdynia.pl (8.14.5/8.14.5/Submit) with ESMTP id q6CJutkt003571; Thu, 12 Jul 2012 21:56:55 +0200 (CEST) (envelope-from wojtek@wojtek.tensor.gdynia.pl) Date: Thu, 12 Jul 2012 21:56:55 +0200 (CEST) From: Wojciech Puchar To: Warren Block In-Reply-To: Message-ID: References: User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.2.7 (wojtek.tensor.gdynia.pl [127.0.0.1]); Thu, 12 Jul 2012 21:56:55 +0200 (CEST) Cc: Kaya Saman , miles kuo , freebsd-questions@freebsd.org Subject: Re: How to mirror the FreeBSD OS on two disks X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 Jul 2012 19:57:01 -0000 >> >> no it doesn't > > You appear to be agreeing with me, but saying that your method does not > produce that problem. sorry - possibly i missed something. >> both method results in system bootable from both drives and proper >> disklabels. > > Yes, these are the same methods that can be used with MBR partitions. The > second works with GPT partitioning also. > true. first doesn't. for now i use only second method in spite of not using GPT. being able to de-mirror selectively a partition or not mirror some partitions at all is quite a big adventage. definitely not possible with "hardware" RAID.