Date: Tue, 14 Mar 2000 13:57:32 -0500 (EST) From: Mikhail Teterin <mi@video-collage.com> To: "Charles N. Owens" <owensc@enc.edu> Cc: hacker@bolingbroke.com, pir@pir.net, freebsd-stable@FreeBSD.ORG Subject: Re: disk cloning Message-ID: <200003141857.NAA38785@dufus.video-collage.com> In-Reply-To: <38CD05C2.7159E85@enc.edu> from "Charles N. Owens" at "Mar 13, 2000 10:14:10 am"
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> > > Disk cloning with dd is evil. Don't Do That. > > Is there a particular reason you say dd is evil for disk cloning? > > I also am curious as to why use of dd in this way is bad. By re-creating the filesystem with restore or tar -x you allow the OS to rearrange the files the way it wants. If you use dd, you will get the exact copy of the old filesystem, which, most likely, accumulated over time, and is not optimal. For example, if a filesystem functions better if the files lay on the disk in single sequences, use of tar or dump/restore will let the OS "defragment". -mi To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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