Re: bios disk numbers and device names

From: Andrea Campi (andrea+freebsd_stable_at_webcom.it)
Date: 11/29/04

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    Date: Mon, 29 Nov 2004 13:39:58 +0100
To: Michael Grant <mg-fbsd3@grant.org>

    On Mon, Nov 29, 2004 at 07:21:00AM -0500, Michael Grant wrote:
    > Has anyone thought about this problem? Is there some spare space in
    > the label that could be used for a device name that, if set, could
    > be used in place of (or an alias for) a name like da0?

    GEOM_LABEL is what you're looking for. Check the glabel(8) man
    page. In a nutshell, you'd do this:

    tunefs -L log /dev/ad1s1a
    tunefs -L db /dev/da4s1a
    tunefs -L www /dev/da4s1a
    ...

    mount /dev/ufs/log /mnt/log
    mount /dev/ufs/db /mnt/db
    mount /dev/ufs/www /mnt/www

    (you get the idea). Obviously you can move use the /dev/ufs/*
    devices in fstab as well.

    If later on you move the filesystems to a different device while
    retaining the label (which means no tar, you have to use dd or
    dump/restore), everything works.

    Hope it helps. Bye,
            Andrea 

    -- 
            Give a man a fish and you feed him for a day;
     teach him to use the Net and he won't bother you for weeks.
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