Re: headsup: swap_pager.c

From: Poul-Henning Kamp (phk_at_phk.freebsd.dk)
Date: 08/01/03

  • Next message: Dag-Erling Smørgrav: "Re: headsup: swap_pager.c" 
    To: Adrian Chadd <adrian@freebsd.org>
Date: Fri, 01 Aug 2003 11:18:39 +0200

    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.
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  • Next message: Dag-Erling Smørgrav: "Re: headsup: swap_pager.c"