From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben DJ Subject: are multiple FSIDs supported? Date: Fri, 23 Oct 2009 11:32:44 -0700 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 To: linux-nfs@vger.kernel.org Return-path: Received: from mail-pz0-f171.google.com ([209.85.222.171]:57530 "EHLO mail-pz0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753011AbZJWSc7 (ORCPT ); Fri, 23 Oct 2009 14:32:59 -0400 Received: by pzk1 with SMTP id 1so2924pzk.33 for ; Fri, 23 Oct 2009 11:33:04 -0700 (PDT) Sender: linux-nfs-owner@vger.kernel.org List-ID: Hello, I'm building an NFSv4 FileServer. My goal is to service multiple machines on a LAN, each with their own, isolated namespace (I'm not sure that's the right terminology). Reading the man page it seems that only ONE fsid=0 export is allowed per server. And that subdirectories of that root CAN be exported, but always under the same/one root. That doesn't seem like "good isolation" to me. My goal would be to export, for example /nfs1 & it's subdirs ONLY to LAN box1 /nfs2 & it's subdirs ONLY to LAN box2 etc I've seen some mentions & discussion online of multiple-fsid's, where /nfs1 would be exported as a root under fsid=0, /nfs2 under fsid=1, etc. But this approach doesn't look like its currently supported or recommended. Even if it was I haven't found anything that says how a nfsv4 client would ADDRESS the specific fsid's. Something in the mount's URI I guess. I know I might still be stuck in NFSv3 thinking about this, and NFSv4 subdirs might be isolated "well enough". BenDJ