Date: Thu, 18 Apr 2002 11:41:50 -0700 From: "Crist J. Clark" <crist.clark@attbi.com> To: Michael Sinz <msinz@wgate.com> Cc: Terry Lambert <tlambert2@mindspring.com>, Dan Nelson <dnelson@allantgroup.com>, Michael Smith <msmith@FreeBSD.ORG>, Doug White <dwhite@resnet.uoregon.edu>, =?iso-8859-1?Q?Pawe=B3_Jakub___Dawidek?= <nick@garage.freebsd.pl>, freebsd-hackers@FreeBSD.ORG Subject: Re: Hardlinks... Message-ID: <20020418114150.A65859@blossom.cjclark.org> In-Reply-To: <3CBEE3C6.DDEB6683@wgate.com>; from msinz@wgate.com on Thu, Apr 18, 2002 at 11:18:30AM -0400 References: <200204081841.g38Ifi104580@mass.dis.org> <3CB21C40.A62B442@mindspring.com> <20020408232326.GB1749@dan.emsphone.com> <3CB26A58.AD809508@mindspring.com> <20020409003838.F31507@blossom.cjclark.org> <3CBEE3C6.DDEB6683@wgate.com>
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On Thu, Apr 18, 2002 at 11:18:30AM -0400, Michael Sinz wrote:
> "Crist J. Clark" wrote:
> >
> > On Mon, Apr 08, 2002 at 09:13:12PM -0700, Terry Lambert wrote:
> > [snip]
> >
> > > It's arguable that "/" and "/usr" themselves should be
> > > mounted read-only,
> >
> > It's not very practical to have / read-only on a truely multi-user
> > (the only time this linking stuff is much of an issue) 4-STABLE
> > system. The two main reasons being /etc/master.passwd, et al, and the
> > problems with a read-only /dev. It takes extensive customizations and
> > kludges to get this to work.
>
> Actually, with minimal work in the rc.diskless* files, we have a
> very workable, large-scale system with / as Read-Only. In fact,
> only /dev and /var are read-write (well, in testing we also have
> a /sewer for coredumps) /dev and /var are local RAM disks (and /tmp
> points are /var/tmp)
It may be easier to fit it in with a diskless configuration. One of
the problems is that in a "normal" (i.e. not diskless) stuff in /dev
is used before you get at chance to mount something over /dev. And
that may or may not be a problem. But the diskless stuff is run so
early in the boot process, it seems like it should be easier to manage
that.
> One of these days I will want to write up some of what we did.
That would be interesting.
--
Crist J. Clark | cjclark@alum.mit.edu
| cjclark@jhu.edu
http://people.freebsd.org/~cjc/ | cjc@freebsd.org
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