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Date:      Tue, 19 Mar 1996 12:16:39 -0700 (MST)
From:      Terry Lambert <terry@lambert.org>
To:        msmith@atrad.adelaide.edu.au (Michael Smith)
Cc:        amigus@cs.mun.ca, questions@freebsd.org
Subject:   Re: Diskless FreeBSD
Message-ID:  <199603191916.MAA24438@phaeton.artisoft.com>
In-Reply-To: <199603190627.QAA29799@genesis.atrad.adelaide.edu.au> from "Michael Smith" at Mar 19, 96 04:57:24 pm

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> Make sure you preallocate the swapfile.
> 
> # dd if=/dev/zero of=<swapfile> bs=1048576 count=20
> 
> gets you a 20M swapfile.

This should only be necessary for local swap to a file.

Over the net, zero fill of empty pages for default page contents
should be acceptable.

Of course, if you don't preallocate, and it needs to allocate more
disk blocks because of swap writes than are available, then you
are screwed.

You will need to have the swapfile there for each machine *and*
allocated, as long as the machine is running.  I haven't seen a bootp
mod to allocate at boot time, but I suppose it is possible.


					Terry Lambert
					terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.



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