Date: Sun, 22 Mar 2009 14:00:12 GMT From: Matthias Schuendehuette <msch@snafu.de> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/132934: Cancel of a NFS-lock fails repeatedly Message-ID: <200903221400.n2ME0CV7066550@www.freebsd.org> Resent-Message-ID: <200903221410.n2MEA1b6055103@freefall.freebsd.org>
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>Number: 132934 >Category: kern >Synopsis: Cancel of a NFS-lock fails repeatedly >Confidential: no >Severity: critical >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sun Mar 22 14:10:01 UTC 2009 >Closed-Date: >Last-Modified: >Originator: Matthias Schuendehuette >Release: 6.4 + 7.1 >Organization: SIEMENS AG >Environment: >Description: If a NFS client (in my case a HP-UX 11.11 client) tries to cancel a NFS lock, the FreeBSD-Server doesn't reply at all. This is true for FreeBSD-6.4 and FreeBSD 7.1. (with and without kernel support for NFS locking). Since NFS-Serving is the major task of our FreeBSD servers, this error is a show-stopper for us, which prevents us from further upgrading the operating system. FreeBSD 6.3 and 7.0 do not show such behaviour. >How-To-Repeat: Mount a filesystem from a FreeBSD-Server on a HP-UX 11.11 machine via NFS V3. Try to lock a file (that works) then try to remove the lock. You'll wait forever... I found the problem with my (HP-UX)homedirectory on a FreeBSD NFS-Server. The login shell locks .profile and hangs after the last statement of .profile. Wireshark shows a continuing stream of "NLM V4 CANCEL MSG"es from the client to the server, which will never be answered. >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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