From owner-freebsd-fs@FreeBSD.ORG Mon Sep 3 05:55:06 2007 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1186E16A417; Mon, 3 Sep 2007 05:55:06 +0000 (UTC) (envelope-from marck@rinet.ru) Received: from woozle.rinet.ru (woozle.rinet.ru [195.54.192.68]) by mx1.freebsd.org (Postfix) with ESMTP id 899A613C457; Mon, 3 Sep 2007 05:55:05 +0000 (UTC) (envelope-from marck@rinet.ru) Received: from localhost (localhost [127.0.0.1]) by woozle.rinet.ru (8.14.1/8.14.1) with ESMTP id l835sf8v032639; Mon, 3 Sep 2007 09:54:41 +0400 (MSD) (envelope-from marck@rinet.ru) Date: Mon, 3 Sep 2007 09:54:41 +0400 (MSD) From: Dmitry Morozovsky To: Ivan Voras In-Reply-To: Message-ID: <20070903095344.P17354@woozle.rinet.ru> References: <20070901074803.GM85633@comp.chem.msu.su> <20070902233930.O1113@woozle.rinet.ru> X-NCC-RegID: ru.rinet X-OpenPGP-Key-ID: 6B691B03 MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-3.0 (woozle.rinet.ru [0.0.0.0]); Mon, 03 Sep 2007 09:54:41 +0400 (MSD) Cc: freebsd-fs@freebsd.org Subject: Re: New option for newfs(3) to make life with GEOM easier X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 03 Sep 2007 05:55:06 -0000 On Mon, 3 Sep 2007, Ivan Voras wrote: IV> > IV> Why not go a bit further and reserve 1 sector by default? I mean: keep IV> > IV> the option, but if the GEOM people agree that only the last sector is in IV> > IV> question here (and I think all current GEOM classes behave this way), IV> > IV> reserve the 1 sector by default. Nobody will notice but some foot IV> > IV> shooting will be avoided. IV> IV> > There are possibilities that you can decide to use more than one GEOM layers IV> > under your file system. IV> IV> Of course, but I don't think this is significant in practice: except IV> gmirror, what else would you like to put on a existing file system? My example which leads me to write the patch: gcache under graid3. Since then, I usually reserve 8 sectors at the end of each file system - just in case. Sincerely, D.Marck [DM5020, MCK-RIPE, DM3-RIPN] [ FreeBSD committer: marck@FreeBSD.org ] ------------------------------------------------------------------------ *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru *** ------------------------------------------------------------------------