Subject: Re: w cmd on energy saving machines: problem and proposed solution
To: Ignatios Souvatzis <is@netbsd.org>
From: Todd Vierling <tv@wasabisystems.com>
List: tech-userlevel
Date: 06/19/2001 17:11:31
On Fri, 15 Jun 2001, Ignatios Souvatzis wrote:
: - /dev is mounted noatime (I want to make the disk spin down when unused, and
: I was told to set noatime for this)
Possibly easier solution to this: in an early-start rc.d script, mount a
MFS over /dev and extract a vanilla "MAKEDEV all" tree with tar(1), from a
file like /etc/boot-dev.tar.gz. Making a "BEFORE: root" script should be
sufficient. Not only can you use devmtime and atime on that, you get
low-latency mtime/atime updates, and can mount your / nodev (or even ro).
In fact, that's what I do for my netboot machines (for both /dev and /var),
which only need /dev/console in the NFS root and have a RO /--and once I fix
init(1), won't need /dev/console either. I just happen to be running 1.4.x
on the netboot boxen still, so I haven't converted the procedure to rc.d
yet.... :)
--
-- Todd Vierling <tv@wasabisystems.com> * Wasabi NetBSD: Run with it.
-- NetBSD 1.5 now available on CD-ROM -- http://www.wasabisystems.com/