home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.unix.admin
- Path: sparky!uunet!portal!mandrews
- From: mandrews@portal.hq.videocart.com (Mike Andrews)
- Subject: Re: shutdown (was Re: (rsh somehost reboot) never exits)
- Message-ID: <BxB1D1.n0y@portal.hq.videocart.com>
- Organization: VideOcart Inc.
- References: <1992Oct30.172655.2069@thom5.ecsthom5.ecs> <janet.720669557@dunnart> <PD.92Nov3155621@herts.x.co.uk>
- Date: Fri, 6 Nov 1992 17:17:25 GMT
- Lines: 79
-
- In article <PD.92Nov3155621@herts.x.co.uk> pd@x.co.uk (Paul Davey) writes:
- >>>>>> On 2 Nov 92 01:59:17 GMT, janet@cs.uwa.oz.au (Janet Jackson) said:
- >
- >>One of the reasons why shutdown will take so long unnecessarily is that the
- >>file /etc/rmtab (which lists all remote machines which have a filesystem
- >>currently mounted from the host) will not have entries removed...
- >
- >Janet> This is the way shutdown should work, but I don't believe it does, at
- >Janet> least not under SunOS.
- >
- >It doesn't, and couldn't unless root on the server was allowed to run
- >/etc/unmount (as root) on the client.
- >
-
- Showmount also shows our PCs that have NFS mounts via Beame & Whiteside NFS.
- PCs aren't going to unmount.
-
- >Janet> For example, one of our machines, a student server, has never
- >Janet> had any of its filesystems mounted on my workstation -- yet
- >Janet> when shutdown is run on that server, my workstation gets the
- >Janet> messages.
- >
- >All SunOS machines on the local net receive the message - I think it
- >uses rwall, but that name is not present in the binary.
- >
- >It does not broadcast to other machines (non SunOS) on the net.
- >
-
- When we shutdown our Auspex, the PCs running B&W NFS, logged in or not, get
- the shutdown message as well as all of our Xterminal users who are served by
- other Suns. I suspect that shutdown does a rwall to every network, maybe
- with a write to the broadcast address on each attached ethernet. The X users
- get the message since they have tty on the Sun machines that NFS mount from the
- Auspex over a server backbone.
-
- >Janet> I'd probably use shutdown -k), but it won't make much difference to the
- >Janet> warning messages.
- >
- >It doesn't.
- > (SunSoft if you are listening a -q (quiet) switch would be nice.)
- >
- >My procedure for shutting down server machines in a cross mounted network:
- >
- >1) Run showmount on the server
- >
- >2) Unmount the remote mounted directories (showmount may lie)
- >
- >3) Use wall to warn users on local machine (optional!)
- >
- >4) Check for users with ps (not who or w, which do not report users
- > without a tty - possible with X)
- >
- >5) Use /etc/halt to halt
- > or /etc/reboot to reboot
- > or kill -TERM 1 for single user mode
- >
- >--
- > Paul Davey Vision Park UUCP: pd@ixi.uucp
-
-
- Auspex has the shutdown that takes forever on its list of known bugs in
- Auspex's OS release 1.4.1 and recommends the kill -TERM 1:
-
- "Very slow system shutdown (0743)
-
- "Sometimes shutdowns can be very slow. This may happen if the server tries to
- send shutdown messages to clients tahta are not up or that do not have rwall
- daemons.
-
- "Workaround: Instead of using shutdown to stop the system, try using
- kill -TERM 1 to take it to single user mode, and use halt or reboot to bring it
- the rest of the way down."
-
- - Auspex Version 1.4.1 Software release notes
-
- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
- Mike Andrews VideOcart, Inc.
- mandrews@hq.videocart.com 300 S. Wacker Dr.
- Network Administrator Chicago, IL, USA
-