From owner-freebsd-current  Sat Mar 18 21:43:36 2000
Delivered-To: freebsd-current@freebsd.org
Received: from holly.calldei.com (adsl-208-191-146-189.dsl.hstntx.swbell.net [208.191.146.189])
	by hub.freebsd.org (Postfix) with ESMTP id A24F637B6F3
	for <current@FreeBSD.org>; Sat, 18 Mar 2000 21:43:32 -0800 (PST)
	(envelope-from chris@holly.calldei.com)
Received: (from chris@localhost)
	by holly.calldei.com (8.9.3/8.9.3) id XAA83151
	for current@FreeBSD.org; Sat, 18 Mar 2000 23:42:44 -0600 (CST)
	(envelope-from chris)
Date: Fri, 17 Mar 2000 23:06:32 -0600
From: Chris Costello <chris@calldei.com>
To: current@FreeBSD.org
Subject: Proposal: Union mount of fdesc on top of /dev
Message-ID: <20000317230632.I24374@holly.calldei.com>
Reply-To: chris@calldei.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
User-Agent: Mutt/0.96.4i
User-Agent: Mutt/0.96.4i
Sender: owner-freebsd-current@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

   Now that I've committed a change which fixes that pesky
lstat() panic in fdesc, I'd like to suggest that it replace the
existing /dev/fd devices and /dev/std{err,in,out}.  I've already
got such a setup running on a test box:

     Filesystem  1K-blocks     Used    Avail Capacity  Mounted on
     /dev/da0s1a     49583    25320    20297    56%    /
     /dev/da0s1f    804119   697621    42169    94%    /usr
     /dev/da0s1e     19815      840    17390     5%    /var
     procfs              4        4        0   100%    /proc
     fdesc               1        1        0   100%    /dev

   This fdesc mount is mounted with the `union' option.

   And a little demonstration of the 'lightness' of fdesc over
our oodles-of-device-nodes:

     $ ls -l 3<&1 4<&1 9<&1
     total 0
     crw-------  1 chris  tty      5,   0 Mar 18 05:02 0
     crw-------  1 chris  tty      5,   0 Mar 18 05:02 1
     crw-------  1 chris  tty      5,   0 Mar 18 05:02 2
     crw-------  1 chris  tty      5,   0 Mar 18 05:02 3
     crw-------  1 chris  tty      5,   0 Mar 18 05:02 4
     dr--r--r--  2 root   wheel       512 Mar 18 04:38 5
     dr--r--r--  2 root   wheel       512 Mar 18 04:38 6
     dr--r--r--  2 root   wheel       512 Mar 18 04:38 7
     crw-------  1 chris  tty      5,   0 Mar 18 05:02 9

   Compared to our 63 device nodes, I think this is much nicer.
Any of you folks have feedback?

-- 
|Chris Costello <chris@calldei.com>
|Using TSO is like kicking a dead whale down the beach.  -- S. C. Johnson
`------------------------------------------------------------------------


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-current" in the body of the message