re: attributes (optionalness of)

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From: Brent Callaghan (brent@jurassic)
Date: 03/11/97-12:44:03 PM Z


Date: Tue, 11 Mar 1997 10:44:03 -0800 (PST)
From: Brent Callaghan <brent@jurassic>
Subject: re: attributes (optionalness of)
Message-ID: <Roam.1.1.858105843.5884.brent@jurassic>


> But the issue is not how much can you do.  The issue is can you do all that
> is necessary.

This is perhaps what it comes down to.  I don't think the protocol can
guarantee this.

For instance, there are several on this mailing list who have experience
with implementing and/or maintaining MVS NFS server.  There are some good
horror stories in the implementation of this server.  It pushed the limits of
NFS server implementations; getting the attributes of MVS filesystems to map
into a fattr is an exercise in imagination.

I wouldn't consider using an MVS NFS server as a repository for my home
directory - my applications would break en mass.  However, as a means
for providing access for heterogeneous clients to MVS datasets, it is
very successful.  If we pick a mandatory set of file attributes that
an MVS/NFS server cannot support - is NFS v4 no longer supportable on
that platform ?

I agree that zero attributes is probably non-useful and NFS servers
will make a best effort to support as many attributes as they can.
I think it's unecessarily restrictive to lock out potentially useful
NFS implementations because they don't support a minimum set.

	Brent


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