Subject: Re: hang during shutdown
To: Frank van der Linden <>
From: Tim Janes <>
List: current-users
Date: 09/11/1997 17:25:25
> On Thu, Sep 11, 1997 at 09:41:18AM +0100, Tim Janes wrote:
> > Our Experience:-
> > 
> > 1.2Beta and 1.2.1: Never seen a hang - uptimes usually 2-3 months very
> > heavy NFS activity during that time.
> > 
> > 1.2G: With same setup - (all disks NFS except / and swap) always hangs
> > after syncing disks message even if shutdown immediately after booting.
> Judging from earlier reports, this seems to be a problem with
> 'silly' NFS files (.nfsXXXXX) and a (forcible) unmount. I can
> think of a few scenarios that would cause problems. I'll set up
> a diskless system to test this, but I might not get around to doing
> so until after next week, as I'll be away next week.
> - Frank

One further point - all our machines are on a 100BaseT network (SMG or
Lantronix cards) with all disks served from an Alphaserver 1000A + RAID
+ Digital Unix.

But as a test I have just moved one NetBSD machine (Pentium 133) to a
10baseT segment and found that it shut down cleanly 6 out of 8
times. ( Hanging after Syncing disks twice. )

Putting it back on the 100BaseT segment it hung 8 times out of 8
during the shutdown.

So there appears to be some timing issue involved.