Return-Path: Received: from fieldses.org ([174.143.236.118]:43238 "EHLO fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753409Ab0DVSWO (ORCPT ); Thu, 22 Apr 2010 14:22:14 -0400 Date: Thu, 22 Apr 2010 14:22:14 -0400 To: Brandon Shandelson Cc: linux-nfs@vger.kernel.org Subject: Re: NFSV4 Replica Support? Message-ID: <20100422182213.GA8858@fieldses.org> References: <01c701cae247$e8e50900$baaf1b00$@com> Content-Type: text/plain; charset=utf-8 In-Reply-To: <01c701cae247$e8e50900$baaf1b00$@com> From: "J. Bruce Fields" Sender: linux-nfs-owner@vger.kernel.org List-ID: MIME-Version: 1.0 On Thu, Apr 22, 2010 at 11:16:20AM -0700, Brandon Shandelson wrote: > I want to use NFSV4 replicas on Ubuntu 9.10 64-bit servers.  It doesn’t seem > to work.  It *looks* like the server kernel module supports it, but the NFS > client does not.  Is this the case, or should I be able to make replicas > work on Linux? What are you actually trying to do? There's a little support for replication in that the NFSv4 server can be told to report certain locations as having the same data, but it's not really supported yet: you need smoething to create the replicas for you (probably doable with GFS2 as the exported filesystem, or by sharing the filesystem image if it's read-only). I don't think the Linux NFSv4 client knows how to use that information yet. --b.