From: James Pearson Subject: Re: Re: [autofs] Server/client mismatch over status of a mount ... Date: Mon, 17 Feb 2003 17:49:56 +0000 Sender: nfs-admin@lists.sourceforge.net Message-ID: <3E5120C4.9C03C7A6@moving-picture.com> References: <3E50EC51.6022D3A7@moving-picture.com> <20030217152036.GA23116@terminus.zytor.com> <3E510686.6899E7BE@moving-picture.com> <15953.2794.981629.182213@charged.uio.no> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: "H. Peter Anvin" , nfs@lists.sourceforge.net, autofs@linux.kernel.org Return-path: Received: from mpc-26.sohonet.co.uk ([193.203.82.251] helo=moving-picture.com) by sc8-sf-list1.sourceforge.net with esmtp (Exim 3.31-VA-mm2 #1 (Debian)) id 18kpPm-0005Bj-00 for ; Mon, 17 Feb 2003 09:50:50 -0800 To: trond.myklebust@fys.uio.no Errors-To: nfs-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Id: Discussion of NFS under Linux development, interoperability, and testing. List-Unsubscribe: , List-Archive: What would be the side effects of dropping the RPC call? I guess the rpc.mountd on the server will never get a umount request - will this cause problems with the client autofs repeatedly mounting/umounting file systems from the server? With my particular problem, there was nothing in the system log on the client to indicate the the NFS filesystem couldn't be umounted - i.e. under what circumstances could umount think it's OK to umount, but the actual umount fails - if I try to umount an NFS filesystem that has open resources, it get a 'device is busy' error. Thanks James Pearson Trond Myklebust wrote: > > >>>>> " " == James Pearson writes: > > > So, is there a possible workround? Thanks > > Workaround: drop the entire RPC call. Failing that, you have a choice > of races... > > A real fix would involve teaching the knfsd kernel processes to do > upcalls to userland in order to find out if a client is authorized or > not. This is feasible in 2.5.x, but not in 2.4.x (as the latter lacks > the machinery for doing upcalls to userland). > > Cheers, > Trond > > ------------------------------------------------------- > This sf.net email is sponsored by:ThinkGeek > Welcome to geek heaven. > http://thinkgeek.com/sf > _______________________________________________ > NFS maillist - NFS@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/nfs ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs