Re: nfs file locking broken

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On Tue, 2006-10-17 at 14:30 -0400, Robert W. Fuller wrote:
> Robert W. Fuller wrote:
> > I tried to upgrade from 2.6.16.27 to 2.6.17.13.  I have also tried
> > 2.6.18.1.  I discovered NFS file locking no longer works between a Linux
> > client and an OpenBSD server.  For example, gtk-gnutella gets the
> > following error:
> > 
> > 06-10-14 15:50:19 (WARNING): fcntl(8, F_SETLK, ...) failed for
> > "/home/edison/.gtk-gnutella/gtk-gnutella.pid": Permission denied
> > 
> > gpg hangs waiting for a lock for ~/.gnupg/random_seed
> 
> Maybe the thing to do is to Cc: the NFS guy on this?  Anybody else have
> any suggestions?
> 
> Is there a known fundamental change in the Linux NFS client that would
> break file locking between a Linux NFS client and an OpenBSD-3.8 NFS
> server?    Is OpenBSD-3.8 somehow broken with respect to new behavior in
> the Linux NFS client?
> 
> This is very reproducible.  File locking works with 2.6.16.27.  Sometime
> thereafter it ceased to work.  There are no configuration changes to
> /etc or anything like that....  For me, it's a simple matter of choosing
> a working kernel from the GRUB menu or a broken kernel.

File locking works fine for me, both against Linux boxes and others. I
don't have any OpenBSD servers to test, though.

Have you tried using something like ethereal/wireshark in order to sniff
the wire?

Cheers,
  Trond

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