From owner-freebsd-questions@FreeBSD.ORG Thu Oct 30 06:04:40 2008 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 4EABB1065673 for ; Thu, 30 Oct 2008 06:04:40 +0000 (UTC) (envelope-from k0802647@telus.net) Received: from defout.telus.net (defout.telus.net [204.209.205.13]) by mx1.freebsd.org (Postfix) with ESMTP id B96A48FC1E for ; Thu, 30 Oct 2008 06:04:39 +0000 (UTC) (envelope-from k0802647@telus.net) Received: from priv-edmwaa06.telusplanet.net ([204.209.205.55]) by priv-edmwes33.telusplanet.net (InterMail vM.7.08.02.00 201-2186-121-20061213) with ESMTP id <20081030060438.EEHR11109.priv-edmwes33.telusplanet.net@priv-edmwaa06.telusplanet.net> for ; Thu, 30 Oct 2008 00:04:38 -0600 Received: from oliver.bc.lan (d75-157-26-132.bchsia.telus.net [75.157.26.132]) by priv-edmwaa06.telusplanet.net (BorderWare Security Platform) with ESMTP id 8DB304253838A2CF for ; Thu, 30 Oct 2008 00:04:38 -0600 (MDT) Received: from [10.111.111.112] (unknown [10.111.111.112]) by oliver.bc.lan (Postfix) with ESMTP id A0012645D for ; Wed, 29 Oct 2008 23:04:37 -0700 (PDT) Message-ID: <49094E75.7040405@telus.net> Date: Wed, 29 Oct 2008 23:04:37 -0700 From: Carl User-Agent: Thunderbird 2.0.0.17 (Windows/20080914) MIME-Version: 1.0 To: freebsd-questions@freebsd.org References: <4904346E.80907@telus.net> In-Reply-To: <4904346E.80907@telus.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: gmirror + subset of partitions gjournal'd, autosync setting? 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, 30 Oct 2008 06:04:40 -0000 Carl wrote: > I've built a GEOM mirror on a single slice of a single disk and am about > to insert the second disk. Of the partitions in the mirror, I made only > a few of them gjournal'd. I've seen it recommended that one disable > autosynchronization for the mirror if using journaled filesystems. > > 1. Is that recommendation a must or a nice-to-have? What are the actual > consequences of not taking that advice? > > 2. In a case like mine, the non-journaled partitions need > autosychronization enabled to benefit from being mirrored, right? > > 3. Exactly how would I disable autosynchronization for the journaled > partitions in the mirror, but not for the rest? Can no one help me with this question? Carl / K0802647