From owner-freebsd-hackers@FreeBSD.ORG Tue Apr 4 10:14:31 2006 Return-Path: X-Original-To: freebsd-hackers@freebsd.org Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E3D1C16A42F for ; Tue, 4 Apr 2006 10:14:31 +0000 (UTC) (envelope-from khaled@ipbill.com) Received: from mail.ipbill.com (mail.ipbill.com [217.73.64.1]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2D3BC43D49 for ; Tue, 4 Apr 2006 10:14:28 +0000 (GMT) (envelope-from khaled@ipbill.com) Received: (qmail 91521 invoked from network); 4 Apr 2006 10:14:25 -0000 Received: from unknown (HELO elzidpc) (192.168.129.50) by mail.ipbill.com with SMTP; 4 Apr 2006 10:14:25 -0000 From: "Khaled Hussain" To: "M. Warner Losh" Date: Tue, 4 Apr 2006 11:12:03 +0100 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2911.0) In-Reply-To: <20060328.210412.18287651.imp@bsdimp.com> Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Cc: FreeBSD Hackers Subject: RE: cloning a FreeBSD HDD X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 04 Apr 2006 10:14:32 -0000 Hi guys, Why does everyone talk about dump+restore as a pair? I thought it was possible just to dump a filesystem to a different hard disk i.e. dump -0a -f /dev/ad2 / Also, how can I find out which /boot/boot# file a freebsd system is using by default? Kind Regards Khaled > -----Original Message----- > From: owner-freebsd-hackers@freebsd.org > [mailto:owner-freebsd-hackers@freebsd.org]On Behalf Of M. Warner Losh > Sent: 29 March 2006 05:04 > To: eksffa@freebsdbrasil.com.br > Cc: freebsd-hackers@freebsd.org > Subject: Re: cloning a FreeBSD HDD > > > In message: <4429972C.5030806@freebsdbrasil.com.br> > Patrick Tracanelli writes: > : > : >> I heard its faster if you use two dd's; i.e: > : >> > : >> # dd if=/dev/ad0 bs=64k | dd of=/dev/ad1 bs=64k > : >> > : >> allowing read and write to proceed in parallel. > : > > : > > : > that's what ddd and 'team' are for. > : > I don't know if ddd is in the ports as it may clash inname with teh > : > debugger ddd > : > They internally fork and use several processes synchronised > in some manner. > : > : Isn't dump+restore and a couple of fdisk+bsdlabel trick to copy the > : source partitioning a better choice to "clone" this HDD? > > Yes. That's what I *ALWAYS* do, because hard drives are never the > exact same size. > > fdisk -I makes the fdisk part easy. bsdlabel -R makes the disklabel > cloning relatively painless. > > dump + restore is slow but reliabe. > > Warner > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" > > ______________________________________________________________________ > This email has been scanned by the MessageLabs Email Security System. > For more information please visit http://www.messagelabs.com/email > ______________________________________________________________________ >