From: "Ara.T.Howard" <Ara.T.Howard@noaa.gov>
Subject: Re: Linux' NFS locking b0rken?
Date: Tue, 25 May 2004 13:08:25 -0600 (MDT)
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Cc: Trond Myklebust <trond.myklebust@fys.uio.no>,
   Jeffrey Layton <jtlayton@poochiereds.net>, Olaf Kirch <okir@suse.de>,
   <nfs@lists.sourceforge.net>
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To: Dan Stromberg <strombrg@dcs.nac.uci.edu>
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On Tue, 25 May 2004, Dan Stromberg wrote:

> On Tue, 2004-05-25 at 10:47, Trond Myklebust wrote:
> > P=E5 ty , 25/05/2004 klokka 12:42, skreiv Jeffrey Layton:
> >=20
> > > Perhaps Solaris does some sort of BSD-POSIX lock translation which ma=
kes
> > > flock() work there?
> >=20
> > The convention for local filesystems under Linux is that BSD and POSIX
> > locks are not allowed to see each other. That rules out using the above
> > trick for NFS.
> >=20
> > Cheers,
> >    Trond
>=20
> Actually, wouldn't you be OK if you had a flock that was just a wrapper
> around fcntl?

yes, in that it would work, you simply would not coordinate with other
processes which do NOT use fcntl based locks.  ruby and perl ship with
implemtations of flock which are, in fact, fctnl under the hood.

-a
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| EMAIL   :: Ara [dot] T [dot] Howard [at] noaa [dot] gov
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