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Date:      Tue, 17 Oct 2000 09:41:12 -0500
From:      Jonathan Fosburgh <syjef@mail.mdanderson.org>
To:        Daniel.Bye@uk.uu.net
Cc:        wash@iconnect.co.ke, freebsd-questions@FreeBSD.ORG
Subject:   RE: Defragmentation
Message-ID:  <8766mro7i0.wl@jef-nt.mdacc.tmc.edu>
In-Reply-To: In your message of "Tue, 17 Oct 2000 15:04:14 %2B0100" <FB7CAC781DB6D311BEE800805FE6FADA2F4CB3@camexch4.cam.uk.internal>
References:  <FB7CAC781DB6D311BEE800805FE6FADA2F4CB3@camexch4.cam.uk.internal>

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* Daniel Bye <Daniel.Bye@uk.uu.net> 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


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