Subject: Re: FreeBSD 5/6/7 kernel emulator for NetBSD 2.x
To: Steven M. Bellovin <>
From: Julio M. Merino Vidal <>
List: tech-kern
Date: 10/27/2005 21:32:02
On 10/26/05, Steven M. Bellovin <> wrote:
> In message <>, Jason T=
> writes:
> >
> >FWIW, I think a devfs based on our new tmpfs would be better for NetBSD.
> >
> I was under the impression that each i-node in tmpfs consumed a fair
> amount of space, making it a bad match for things like /dev which have
> very many i-nodes but no actual files.  (Well, I've seen glitches on
> ancient systems where /dev/null got turned into a regular file, leading
> to amusing messages about "/dev/null: no space left on device"...)

They are bigger than on-disk nodes, but not so much.  You can ceratinly kee=
a bunch of them in memory, specially considering that a devfs doesn't have
a lot of nodes; you'll only have those that you really need.

Julio M. Merino Vidal <>
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