From owner-freebsd-questions@FreeBSD.ORG Fri Dec 7 20:18:14 2007 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 5414916A418 for ; Fri, 7 Dec 2007 20:18:14 +0000 (UTC) (envelope-from jerrymc@gizmo.acns.msu.edu) Received: from gizmo.acns.msu.edu (gizmo.acns.msu.edu [35.8.1.43]) by mx1.freebsd.org (Postfix) with ESMTP id DD0C213C459 for ; Fri, 7 Dec 2007 20:18:13 +0000 (UTC) (envelope-from jerrymc@gizmo.acns.msu.edu) Received: from gizmo.acns.msu.edu (localhost [127.0.0.1]) by gizmo.acns.msu.edu (8.13.6/8.13.6) with ESMTP id lB7KDGB3053775; Fri, 7 Dec 2007 15:13:16 -0500 (EST) (envelope-from jerrymc@gizmo.acns.msu.edu) Received: (from jerrymc@localhost) by gizmo.acns.msu.edu (8.13.6/8.13.6/Submit) id lB7KDG20053774; Fri, 7 Dec 2007 15:13:16 -0500 (EST) (envelope-from jerrymc) Date: Fri, 7 Dec 2007 15:13:16 -0500 From: Jerry McAllister To: James Harrison Message-ID: <20071207201315.GD53527@gizmo.acns.msu.edu> References: <539c60b90712041638s78b4e40fn67434f2dce5e27e7@mail.gmail.com> <20071205154148.GB21074@gizmo.acns.msu.edu> <1196874620.32615.15.camel@p25dual1.lanl.gov> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1196874620.32615.15.camel@p25dual1.lanl.gov> User-Agent: Mutt/1.4.2.2i Cc: Jerry McAllister , Steve Franks , User Questions Subject: Re: copying just / (not /tmp, /usr, etc) (rsync -x failed) 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: Fri, 07 Dec 2007 20:18:14 -0000 On Wed, Dec 05, 2007 at 10:10:20AM -0700, James Harrison wrote: > On Wed, 2007-12-05 at 10:41 -0500, Jerry McAllister wrote: > > On Tue, Dec 04, 2007 at 05:38:20PM -0700, Steve Franks wrote: > > > > > I have / on one slice, and [usr,tmp,var] on others. I want to move > > > just / to a new disk, which seemed to be what rsync -x ("do not cross > > > filesystems") was intended for. It failed, however, as df shows 20k > > > blocks in /, and rsync filled up the target slice with 50k blocks, so > > > obviously it blew right past the 'end' of / - did I miss something? Is > > > there no other way except to umount [tmp,usr,var]? > > > > I would use dump/restore. > > > > Build the filesystem in the new disk partition with fdisk, bsdlabel > > and newfs as needed. Then mount the new partition somewhere - > > example: > > mkdir /newpart > > mount /dev/ad1s1a /newpart > > (presuming new disk is ad1, slice is 1, partition is a) > > Doesn't hurt to do an fsck on it here before writing to it, but it > > probably isn't really needed. > > > > Then, run the dump/restore > > > > cd /newpart > > dump 0af - / | restore -rf - > > > > This will get all of / as you want. The other mountpoints for /tmp, /usr > > and /var will be copied, but not the contents of those filesystems. You > > probably want that. > > > > ////jerry > > > > > > > > Thanks, > > > Steve > > Everyone's recommending dump/restore for copying file systems, and > there's something that I've never really been clear on. The advantage of dump/restore is that it will handle all file situations correctly. Most of the other copy schemes miss on something, such as hard links. It is easy to use. > > The nice thing about rsync is that it's network aware. Can dump dump a > file system across a network? > Rsync is OK, especially if you want to set up something for a regular scheduled copy/update, but may be too much for making a single copy. ////jerry > James >