Subject: Re: Help with picking out a system
To: Robert L. Shady <rls@zeus.id.net>
From: Brian Reynolds <reynolds@panix.com>
List: current-users
Date: 06/06/1994 21:51:59
>
> > * 3) Should we setup one "SERVER" that has all of the hard drive space, and
> > * then mount it on each "DIALUP" machine? This provides us an easy way
> > * to allow users transparent access to their mail, etc.
> >
> > There is one inherent problem with this: mail. Mail uses file locking,
> > and network file locking is, as anyone familiar with NFS will tell you,
> > about as close to useless as you can achieve without actually being there.
> > Entire mailboxes have been lost because of NFS file locking.
>
> I know of several Sun's that are currently doing exactly this, is this just
> a problem with our setup, or is there a "proper" way of doing this?
>
> Ie: University of Michigan does this, Netcom does this, etc, etc...
>
>
Sun does this by hacking sendmail. If Sun's sendmail detects that the
mail spool is on a NFS mounted system it redirects the mail to the NFS
server instead of doing any local processing. Not being much of a
sendmail hacker I don't know if this is a standard sendmail feature (I
think not) or something Sun added. Sun doesn't document it.
--
Brian Reynolds | "But in the new approach, as you know, the important
reynolds@panix.com | thing is to understand what you're doing rather than
NAR# 54438 | to get the right answer."
IPMS# 30162 | -- Tom Lehrer
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