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Date: Sun, 12 Jan 1997 18:33:23 +1100
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199701120733.SAA30033@godzilla.zeta.org.au>
To: bde@zeta.org.au, j@uriah.heep.sax.de, jfieber@indiana.edu
Subject: Re: Mounting devfs on /dev
Cc: hackers@FreeBSD.ORG
Sender: owner-hackers@FreeBSD.ORG
X-Loop: FreeBSD.org
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>>The partition nodes for the disk are not being created.  Only
>>/dev/sd0, /dev/rsd0, and /dev/rsd0.ctl are there, nothing more.

I wrote:
>They aren't created until the disk is opened.  mountroot() should
>open the root device without looking it up.  Other disks can easily
>be opened in /etc/rc using something `disklabel </dev/rdk0 >/dev/null'.

Oops, they seem to be broken now for a non-root devfs.  The partitions
on my zip disk /dev/sd1 aren't created when /dev/sd1 is looked at in
various ways, and unmounting devfs hangs all disk i/o after a while.
(At first only the unmount process seemed to be hung - ps was able to
run and should the process hanging on vgone.  Now ps in ddb show that
many processes are hanging on ufslk2.  I thought that this problem was
fixed.)

Bruce