From: Neil Brown Subject: Re: High Availability NFS Proposal Date: Sun, 15 Sep 2002 20:18:09 +1000 Sender: nfs-admin@lists.sourceforge.net Message-ID: <15748.24161.22122.754055@notabene.cse.unsw.edu.au> References: <20020826175418.GB110744@sheplerathome.eng.sun.com> <200208261904.g7QJ4Gd01843@localhost.localdomain> <20020826220136.GB100566@dhcp-uaus08-128-212.sun.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: James Bottomley , "Bill Rugolsky Jr." , nfs@lists.sourceforge.net, lmb@suse.de Return-path: Received: from tone.orchestra.cse.unsw.edu.au ([129.94.242.28]) by usw-sf-list1.sourceforge.net with smtp (Exim 3.31-VA-mm2 #1 (Debian)) id 17qWU8-0002bL-00 for ; Sun, 15 Sep 2002 03:18:36 -0700 Received: From notabene.cse.unsw.edu.au ([129.94.242.45] == bartok.orchestra.cse.unsw.EDU.AU) (for ) (for ) (for ) (for ) (for ) By tone With Smtp ; Sun, 15 Sep 2002 20:18:15 +1000 To: spencer.shepler@Sun.COM In-Reply-To: message from Spencer Shepler on Monday August 26 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: On Monday August 26, shepler@eng.sun.com wrote: > On Mon, James Bottomley wrote: > > shepler@eng.sun.com said: > > > How would you propose dealing with NFSv4 where the mount and statd > > > daemons are not involved with that implementation? > > > > Distributions are only just starting to use V3. V4 is so far out as not to > > need consideration at this time. > > My comment was meant to draw out a discussion that with NFSv4 the > user-level hooks will not be available and an in-kernel implementation > would need to be considered. If the current in-kernel implementation > is moving towards user-level, then future v4 work will need to be redone. I'm definately considering NFSv4 and I don't buy the argument that it can all be done from user-space. I'm working toward what I hope will be a nice clean interface for kernel and userspace to work together on a number of related issues. The only way to leave it to user-space that I can see would be to move the bulk of the NFS server into userspace. If fast web servers can be done in user-space, why not fast NFS servers? There would need to be a direct interface for filehandle lookup, but I suspect it could be done, and would atleast be an interesting project. But I personally am not particularly motivated to try it. It's largely working in the kernel and I am happy for it to stay there. NeilBrown ------------------------------------------------------- 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