From owner-freebsd-geom@FreeBSD.ORG Sat Jan 13 01:17:05 2007 Return-Path: X-Original-To: freebsd-geom@FreeBSD.org Delivered-To: freebsd-geom@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 6883116A403 for ; Sat, 13 Jan 2007 01:17:05 +0000 (UTC) (envelope-from tataz@tataz.chchile.org) Received: from postfix2-g20.free.fr (postfix2-g20.free.fr [212.27.60.43]) by mx1.freebsd.org (Postfix) with ESMTP id 2D1E313C43E for ; Sat, 13 Jan 2007 01:17:04 +0000 (UTC) (envelope-from tataz@tataz.chchile.org) Received: from smtp1-g19.free.fr (smtp1-g19.free.fr [212.27.42.27]) by postfix2-g20.free.fr (Postfix) with ESMTP id 6131A8E736D for ; Sat, 13 Jan 2007 00:46:19 +0100 (CET) Received: from tatooine.tataz.chchile.org (tataz.chchile.org [82.233.239.98]) by smtp1-g19.free.fr (Postfix) with ESMTP id 077089B57E for ; Sat, 13 Jan 2007 01:46:10 +0100 (CET) Received: from obiwan.tataz.chchile.org (unknown [192.168.1.25]) by tatooine.tataz.chchile.org (Postfix) with ESMTP id 486F59D3DA for ; Sat, 13 Jan 2007 00:47:28 +0000 (UTC) Received: by obiwan.tataz.chchile.org (Postfix, from userid 1000) id 2F7F8405D; Sat, 13 Jan 2007 01:47:28 +0100 (CET) Date: Sat, 13 Jan 2007 01:47:28 +0100 From: Jeremie Le Hen To: freebsd-geom@FreeBSD.org Message-ID: <20070113004728.GQ2616@obiwan.tataz.chchile.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.13 (2006-08-11) Cc: Subject: What is gstripe ? X-BeenThere: freebsd-geom@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: GEOM-specific discussions and implementations List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 13 Jan 2007 01:17:05 -0000 Hi list, Please forgive me, I know this is a dumb question. I've checked the manpage, Wikipedia [1], Webopedia [2] and a few other documents, but I'm still not sure to fully understand the striping concept. gmirror(8) provides RAID-1 and is very easy to understand. gconcat(8) is easy to grasp as well. However, I'm experiencing some difficulties to understand gstripe(8). I would say it's a kind of smart disk concatenation which stores block X on disk (X % N), where N is the number of disk in the RAID-0. This permits faster read/write. Am I right ? [1] http://en.wikipedia.org/wiki/Data_striping [2] http://www.webopedia.com/TERM/R/RAID.html Thank you. Best regards, -- Jeremie Le Hen < jeremie at le-hen dot org >< ttz at chchile dot org >