From: "Kevin Coffman" Subject: Re: lockd and krb5 Date: Thu, 16 Nov 2006 09:21:37 -0500 Message-ID: <4d569c330611160621w48c7a85cy9982ea8c9d96877@mail.gmail.com> References: <200611161137.28079.hcb@chaoticmind.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: nfs@lists.sourceforge.net Return-path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.92] helo=mail.sourceforge.net) by sc8-sf-list2-new.sourceforge.net with esmtp (Exim 4.43) id 1Gki7Y-0001Ed-G1 for nfs@lists.sourceforge.net; Thu, 16 Nov 2006 06:21:40 -0800 Received: from ug-out-1314.google.com ([66.249.92.174]) by mail.sourceforge.net with esmtp (Exim 4.44) id 1Gki7Z-0002W5-5F for nfs@lists.sourceforge.net; Thu, 16 Nov 2006 06:21:41 -0800 Received: by ug-out-1314.google.com with SMTP id z38so416078ugc for ; Thu, 16 Nov 2006 06:21:37 -0800 (PST) To: "Helge Bahmann" In-Reply-To: <200611161137.28079.hcb@chaoticmind.net> List-Id: "Discussion of NFS under Linux development, interoperability, and testing." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: nfs-bounces@lists.sourceforge.net Errors-To: nfs-bounces@lists.sourceforge.net I can't help directly with the locking behavior, but could it be related to expiring Kerberos credentials and/or gss contexts? Is the KDE startup that often triggers this at initial login, or at some other time? On 11/16/06, Helge Bahmann wrote: > Hello, > > I am trying to use NFSv3+sec=krb5 for user home directories and I am still > hitting lockd problems; server is 2.6.18.1 and client is 2.6.17.9 > > The symptoms are: > - withouth sec=krb5 everything works fine > - with sec=krb5 file locking breaks in strange ways > > With sec=krb5: > - processes on the client "hang" waiting for locks > - /proc/locks on the client shows the corresponding files to be not locked > - /proc/locks on the server shows the corresponding files to be locked, by > processes that do not exist on either the server nor the client (from the pid > they must be client processes that have exited already) > - sometimes I receive the message "VFS is out of sync with lock manager!" > > Unfortunately I have not been able to write a simple testcase, however KDE > startup triggers the problem very frequently (lots of apps taking a flurry of > locks and doing funny things with fork) > > Can anyone enlighten me what difference sec=krb5 would make with regards to > locking behaviour so I can narrow down the problem? I am unfortunately > completely in the dark. > > Best regards > -- > Mathematicians stand on each other's shoulders while computer scientists stand > on each other's toes. > -- Richard Hamming > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys - and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > NFS maillist - NFS@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/nfs ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs