NFS locking problems with 7.0-RELEASE

Rong-en Fan grafan at
Tue Dec 30 21:13:20 UTC 2008

On Tue, Dec 30, 2008 at 9:39 AM, Bryan Alves <bryanalves at> wrote:
> I'm running a FreeBSD Server (7.0-RELEASE, latest patchlevel, problem has
> existed on previous patchlevels).  Running an NFS server, with statd and
> lockd.  Client is an Ubuntu 8.10 machine.  Of note is that the FreeBSD
> server (in a home environment) is also running PF and doing the packet
> filtering for the house.
> When I export my home directory and mount it on my linux client, I run into
> all sorts of problems with file locking.  The biggest problem is the
> inability to run firefox.  When stracing an execution of firefox, execution
> hangs when opening it's .parentlock file for F_GETLK.  I also notice
> messages in /var/log/messages on the client on occasion:
> I realize that the linux NFS client implementation isn't spectacular, but
> the same ubuntu setup works when connected to a netapp, which leads me to
> believe that the problem is with the freebsd nfs server implementation.
> If anyone can suggest some additional troubleshooting steps to provide some
> more information, or propose some suggested solutions, it would be
> appreciated.

You may want to upgrade to latest RELENG_7 and use
the rewrote lockd in kernel space (w/ NFS_LOCKD in your
kernel configuration).

Rong-En Fan

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