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To: Adrian Chadd <adrian@freebsd.org>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Fri, 01 Aug 2003 16:36:28 +0800."
             <20030801083628.GB56492@skywalker.creative.net.au> 
Date: Fri, 01 Aug 2003 11:18:39 +0200
Message-ID: <7147.1059729519@critter.freebsd.dk>
cc: arch@freebsd.org
cc: David Schultz <das@freebsd.org>
Subject: Re: headsup: swap_pager.c 
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In message <20030801083628.GB56492@skywalker.creative.net.au>, Adrian Chadd wri
tes:
>On Fri, Aug 01, 2003, Poul-Henning Kamp wrote:
>
>> >Can you please describe how the interface between ccd(4) and the
>> >swap subsystem will work?  I like this idea, but it isn't
>> >immediately obvious how you plan to implement striping based on
>> >load and dynamic addition and removal of swap space.
>> 
>> 	ccdconfig -c ccd0 128 0 /dev/da0b /dev/da1b /dev/da2b
>> 	swapon /dev/ccd0
>
>.. and if I want to add another swap device, will that work?

Yes, but it will of course not be striped with the rest, it will
be laid out sequentially.

And as a side effect you will not run into the NSWAP=4 limitation
any more.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.