From: David Robinson (robinson@jetsun.eng.sun.com)
Date: 05/28/98-08:27:51 PM Z
Date: Thu, 28 May 1998 18:27:51 -0700 (PDT) From: David Robinson <robinson@jetsun.eng.sun.com> Message-Id: <199805290127.SAA02570@jetsun.eng.sun.com> Subject: Re: NLM issues (interoperability) > I'm curious as to the interoperability of locking semantics. > > NLM supports POSIX-style file locking. This is a liberal model > that allows clients to have overlapping locked regions and > a client can unlock a sub-region of a larger region. > > My understanding of NT-style locking is that it is more restrictive. > Locked regions may not overlap and sub-regions may not be unlocked. > > How does Windows NT support POSIX-style file locking ? There are some fundemental semantic differences on unlock on close between POSIX and NT. Also manditory locking is very different, Unix systems block, NT sends error messages. I am sure we can unite some of these things. > I'd be interested in any experiences supporting the NLM protocol > on NT servers. I would be interested in what NetApp and Auspex have done as both claim to have "solved" this problem. -David
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