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Date: Thu, 6 Dec 2001 12:45:23 +0100 (CET)
From: Roy Sigurd Karlsbakk <roy@karlsbakk.net>
To: James Stevenson <mail-lists@stev.org>
cc: Marcelo Tosatti <marcelo@conectiva.com.br>, <linux-kernel@vger.kernel.org>
Subject: Re: /proc/sys/vm/(max|min)-readahead effect????
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> > mkfs /dev/hdb1
> > dd if=/dev/zero of=some-file bs=x count=x
> >
> > What can fragment this file????
>  say you wanna write a 500MB file
> on a disk with plenty of space.
>
> but when you create the file it happens to
> create it in a place that only a 50MB file can
> fit because there is another file on the disk in that
> position. after 50MB is created then you have to put the rest file
> elsewhere thus you now have a fragmented file.

er...

take a look above

mkfs /dev/hdb1
(mount /dev/hdb1 /some/dir)
dd if=/dev/zero of=/some/dir/file ...

--
Roy Sigurd Karlsbakk, MCSE, MCNE, CLS, LCA

Computers are like air conditioners.
They stop working when you open Windows.


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