Return-Path: linux-nfs-owner@vger.kernel.org Received: from natasha.panasas.com ([67.152.220.90]:55525 "EHLO natasha.panasas.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755093Ab2ENJZq (ORCPT ); Mon, 14 May 2012 05:25:46 -0400 Message-ID: <4FB0CF8C.8090405@panasas.com> Date: Mon, 14 May 2012 12:25:32 +0300 From: Boaz Harrosh MIME-Version: 1.0 To: Lior CC: , "Myklebust, Trond" , Linux NFS mailing list Subject: Re: nfs v4.1 client without pNFS References: <4FAF9E19.4060802@tonian.com> <4FAFBD04.8020301@tonian.com> In-Reply-To: <4FAFBD04.8020301@tonian.com> Content-Type: text/plain; charset="UTF-8" Sender: linux-nfs-owner@vger.kernel.org List-ID: On 05/13/2012 04:54 PM, Lior wrote: > Hi Tigran, > > I guess that's one way ( a dark white box way, which still needs to be > looked into)... but I was more thinking of a more high level built in > user method (e.g module option ,or mount option) > We used to have it but it was removed, being pointless. 4.1 means pNFS. The optional clause in the STD means client need no implement it but since we slaved so hard to do implement it we see no point ever disabling it. As an administrator policy it is best controlled in a single place at the Server. Instead of having a crap option set at every client. What does that give you? If the admin wants to let you have a choice, for what ever reason that I can't currently imagine, He can setup two exports of the same FS one with the pnfs option, one without. The point of the all pNFS support is that everything is automatic, Server upgraded/extended/scaled boom transparently works. NACK on any user visible disables. It's a maintenance disaster. If you do find any real bugs with the pNFS option left on, please report ASAP and we'll fix it Cheers Boaz > Thanks for the fast response, > Lior K. > > בתאריך 13/05/2012 16:37, ציטוט Tigran Mkrtchyan: >> Hi Lior, >> >> you can blacklist the layout driver in /etc/modprobe.d/nfsv41.conf >> >> blacklist nfs_layout_nfsv41_files >> >> >> Tigran. >> On Sun, May 13, 2012 at 1:42 PM, Lior wrote: >>> Hi Trond, >>> >>> The rfc 5661 states that pNFS is an optional feature. >>> Is there currently an intent to implement some sort of an option (module >>> option ,or mount option) to run the NFSv4.1 client without pNFS >>> functionality? >>> >>> Thanks, >>> Lior K. >>> -- >>> To unsubscribe from this list: send the line "unsubscribe linux-nfs" in >>> the body of a message to majordomo@vger.kernel.org >>> More majordomo info at http://vger.kernel.org/majordomo-info.html > > -- > To unsubscribe from this list: send the line "unsubscribe linux-nfs" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html