From owner-freebsd-questions Tue Oct 17 7:41:11 2000 Delivered-To: freebsd-questions@freebsd.org Received: from mail.mdanderson.org (mail.mdanderson.org [143.111.87.47]) by hub.freebsd.org (Postfix) with ESMTP id 9DCD137B479 for ; Tue, 17 Oct 2000 07:41:08 -0700 (PDT) Received: from jef-nt.mdacc.tmc.edu (jef-nt.mdacc.tmc.edu [143.111.64.202]) by mail.mdanderson.org (8.9.1b+Sun/8.9.1) with ESMTP id JAA02345; Tue, 17 Oct 2000 09:37:46 -0500 (CDT) Date: Tue, 17 Oct 2000 09:41:12 -0500 Message-ID: <8766mro7i0.wl@jef-nt.mdacc.tmc.edu> From: Jonathan Fosburgh To: Daniel.Bye@uk.uu.net Cc: wash@iconnect.co.ke, freebsd-questions@FreeBSD.ORG Subject: RE: Defragmentation In-Reply-To: In your message of "Tue, 17 Oct 2000 15:04:14 +0100" References: User-Agent: Wanderlust/1.1.1 (Purple Rain) SEMI/1.13.7 (Awazu) FLIM/1.13.2 (Kasanui) XEmacs/21.1 (patch 12) (Channel Islands) (i686-pc-cygwin32) MIME-Version: 1.0 (generated by SEMI 1.13.7 - "Awazu") Content-Type: text/plain; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG * Daniel Bye writes: > As far as I know, there are no defragmentation agents for FreeBSD (or most > other *NICES). Therefore, you would have to rebuild your file systems. > Take a tape backup of the entire system (this is sequential, so disk > fragmentation is not an issue), rebuild your disk slice/partition setup, and > then restore the backed up file systems from the tape. > However, you shouldn't need to do this as often as under MS systems, as the > various UNIX file systems aggressively try to minimise data fragmentation. > If anyone knows of a defragmentation agent, I'd like to know :o) > Dan In addition to that, I really don't think fragmentation is a problem unless it gets very high (I think I've heard the figure 90%, but I am very unsure). You might go check the mailing list archives as this is discussedat least every month or two. -- Jonathan Fosburgh Open Systems Communications and Computer Services UT MD Anderson Cancer Center Houston, TX To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message