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Date:      Mon, 20 Sep 1999 13:35:38 -0400 (EDT)
From:      "Matthew N. Dodd" <winter@jurai.net>
To:        Warner Losh <imp@village.org>
Cc:        Matthew Dillon <dillon@apollo.backplane.com>, Chuck Robey <chuckr@mat.net>, Julian Elischer <julian@whistle.com>, Wayne Cuddy <wayne@crb-web.com>, FreeBSD Hackers List <freebsd-hackers@FreeBSD.ORG>
Subject:   Re: what is devfs? 
Message-ID:  <Pine.BSF.4.10.9909201329300.20959-100000@sasami.jurai.net>
In-Reply-To: <199909201628.KAA18279@harmony.village.org>

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On Mon, 20 Sep 1999, Warner Losh wrote:
> Yes.  That's true.  That's why the idea of devfsd is simple, but
> implementing it well enough for people to be happy with it is much
> much harder.

I think a minimal feature set for the first rev would satisify 90% of
those wanting persistence no?  ie just tracking permissions and owners for
everything, and restoring them to their previous state on startup.  This
would require that devfsd be started fairly early.  Adding a tunable
checkpoint interval would be fairly simple.   Beyond that it would be a
matter of what specific features the 'power users' wanted.  This simple
behavior would nearly exactly mimic the behavior of a normal filesystem
based /dev.

-- 
| Matthew N. Dodd  | '78 Datsun 280Z | '75 Volvo 164E | FreeBSD/NetBSD  |
| winter@jurai.net |       2 x '84 Volvo 245DL        | ix86,sparc,pmax |
| http://www.jurai.net/~winter | This Space For Rent  | ISO8802.5 4ever |



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