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Date:      Sun, 24 Sep 1995 13:11:22 -0700 (MST)
From:      Terry Lambert <terry@lambert.org>
To:        pavlidis@hyper.gr (Savas Pavlidis)
Cc:        questions@freebsd.org
Subject:   Re: Locking problem between SysV3.2 and FreeBSD NFS
Message-ID:  <199509242011.NAA03738@phaeton.artisoft.com>
In-Reply-To: <199509241249.PAA26922@hypernet.hyper.gr> from "Savas Pavlidis" at Sep 24, 95 03:49:11 pm

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> I have a Motorola MPC200 computer in my job, running UNIX System V R32V3
> (System V3.2.3). I loaded FreeBSD on a 486 pc and tried to use the PC hard
> disk via NFS. Connection established. All work OK, but when a program
> running on Motorola tries to lock the file from the PC, the program hungs. 

NFS locking is not currently supported.

The Motorolla box is supposed to gracefully continue after an NFS lock
failure, not hang.

> As the NFS is a standard method of sharing disk resources, I think that
> it mustn't be a compatibility problem.

The NFS locking protocol is insufficiently documented, even in the very
expensive ISO standards document for NFS, to allow someone to do a working
implementation.

People are working on it.

I believe that BSDI and Linux also lack this feature, as do some commercial
UNIX clones.


					Terry Lambert
					terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.



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