From owner-freebsd-current@FreeBSD.ORG Sun Jun 28 13:25:33 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 F12411065679 for ; Sun, 28 Jun 2009 13:25:33 +0000 (UTC) (envelope-from spambox@haruhiism.net) Received: from fujibayashi.jp (karas.fujibayashi.jp [77.221.159.4]) by mx1.freebsd.org (Postfix) with ESMTP id 986628FC1D for ; Sun, 28 Jun 2009 13:25:33 +0000 (UTC) (envelope-from spambox@haruhiism.net) Received: from [192.168.0.2] (ppp91-122-47-189.pppoe.avangarddsl.ru [91.122.47.189]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by fujibayashi.jp (Postfix) with ESMTPSA id 6464178F98; Sun, 28 Jun 2009 17:25:30 +0400 (MSD) Message-ID: <4A476F56.2030504@haruhiism.net> Date: Sun, 28 Jun 2009 17:25:42 +0400 From: Aisaka Taiga User-Agent: Thunderbird 2.0.0.22 (Windows/20090605) MIME-Version: 1.0 To: Ivan Voras References: <20090625110253.GA31443@mech-cluster238.men.bris.ac.uk> <10FCC74D-6D46-4112-AD89-BBB4C5933957@mac.com> <2FFFB36F-EFA3-4D92-98A3-692BA2D6F63E@mac.com> <9bbcef730906280551r26e30b61oc84acdd02d94743e@mail.gmail.com> In-Reply-To: <9bbcef730906280551r26e30b61oc84acdd02d94743e@mail.gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-geom@freebsd.org, Marcel Moolenaar , freebsd-questions@freebsd.org, freebsd-current@freebsd.org Subject: Re: gmirror gm0 destroyed on shutdown; GPT corrupt 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, 28 Jun 2009 13:25:34 -0000 Ivan Voras wrote: > Yes, it would be cleaner to implement but it would also make the > mirrored devices unbootable. > But maybe the class of users needing the functionality is smaller now. > Most dedicated server providers can't afford to use hardware RAID systems because that would drastically increase the price of a single system; yet many customers want mirroring. > Looks too complicated and fragile. Maybe there's a need for > metadata-less automatic mirrors in some way, by storing the > configuration somewhere else, possibly in /etc. This might be dangerous in some cases. Imagine booting with two drives swapped; such a configuration might lead to data corruption on a volume which was enumerated incorrectly or swapped. -- Kamigishi Rei KREI-RIPE