Path: utzoo!news-server.csri.toronto.edu!cs.utexas.edu!bcm!convex!news
From: tchrist@convex.COM (Tom Christiansen)
Newsgroups: comp.unix.shell
Subject: Re: NFS File identity resolution?
Message-ID: <1991Mar15.012456.7226@convex.com>
Date: 15 Mar 91 01:24:56 GMT
References: <21078@shlump.nac.dec.com> <20103:Mar1423:16:4291@kramden.acf.nyu.edu>
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Reply-To: tchrist@convex.COM (Tom Christiansen)
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From the keyboard of brnstnd@kramden.acf.nyu.edu (Dan Bernstein):
:In article <21078@shlump.nac.dec.com> prakash@aiag.enet.dec.com writes:
:> Given a set of NFS servers and clients on the same network, and two
:> processes A and B on possibly different nodes, which can communicate
:> using sockets. How can the two processes determine if a file referred to
:> as "/a/b/c/file" by process A is really the file referred to as "/A/B/file"
:> by the process B?
:
:You cannot, at least not reliably.

Well, the lockdaemon manages somehow.   I guess it uses 
something like (host,dev,ino,generation) tuples.

--tom