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Date: Wed, 2 Aug 1995 02:24:42 -0700
Message-Id: <199508020924.CAA10579@silvia.HIP.Berkeley.EDU>
To: doc@freebsd.org
Subject: How to make a swapfile
From: asami@cs.berkeley.edu (Satoshi Asami)
Sender: doc-owner@freebsd.org
Precedence: bulk

Can we make a section about this in the handbook?  It should be
something like

=======
If you want to make a 32MB swapfile, do this.

(1) Find a partition on your disk that has enough free space to hold a
    32MB file.  Say that's /var.

(2) Use the dd command:

    dd if=/dev/zero of=/var/swapfile bs=1024k count=32

    to create a 32MB file.

(3) cd to /dev and issue the command:

    sh ./MAKEDEV vn0

    to create a virtual node.

(4) Use the vnconfig command:

    vnconfig -e /dev/vn0c /var/swapfile swap

    to configure that file as a virtual node with swap enabled.

(5) Add it to the system's swap pool by:

    swapon /var/swapfile

(6) Check that it is working by:

    pstat -s

=======

We might want something about doing this automatically at boot.  Will
this be enough?

# cat >> /etc/vntab
/dev/vn0c /var/swapfile
^D
# cat >> /etc/fstab
/dev/vn0c none swap sw 0 0
^D

Hmm, actually I don't know if /etc/vntab is scanned during reboot.
Should the vnconfig -a and swapon go to rc.local?

Satoshi

P.S. What happened to my slip client section? :)