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Date: Tue, 11 Feb 97 14:11:24 GMT
From: David Alan Gilbert <gilbertd@cs.man.ac.uk>
Message-Id: <9702111411.AA13548@amu7.cs.man.ac.uk>
To: jonathan@cc.odu.edu, questions@freefall.freebsd.org
Subject: Re: Can Linux/FreeBSD share swap?
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Linux can share swap with FreeBSD with a simple hack.
There are two things stopping you.  The first is that Linux doesn't by default
know about FreeBSDs slice/partition scheme - if you wan't that you'll
have to compile it in.

Next problem is that Linux looks for a swap header (to stop you accidentally
swapping onto a file system besides any other use). You have to defeat this
on each Linux boot by adding:

/sbin/mkswap devicename

in your /etc/rc....whatever.... before the swapon

The ext2fs works well on both OS's; however be aware that I don't think
2.1.6 FreeBSD knows about it, and you have to recompile a kernel to get it
into 2.2. Also the FreeBSD ext2fs code is missing 'cookie' code to enable
an ext2fs to be exported.

Dave