Return-Path: Received: from mail-pa0-f68.google.com ([209.85.220.68]:35908 "EHLO mail-pa0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751469AbcDKRsD (ORCPT ); Mon, 11 Apr 2016 13:48:03 -0400 Received: by mail-pa0-f68.google.com with SMTP id k3so10927436pav.3 for ; Mon, 11 Apr 2016 10:48:02 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20160411164154.GG4479@fieldses.org> References: <20160408211526.GC25179@fieldses.org> <00f201d19408$87499250$95dcb6f0$@mindspring.com> <20160411164154.GG4479@fieldses.org> Date: Mon, 11 Apr 2016 19:48:01 +0200 Message-ID: Subject: Re: [Nfs-ganesha-devel] NFSv4 open close operations are slow compared to Linux kernel NFSv4 From: Cedric Blancher To: "J. Bruce Fields" Cc: Frank Filz , Tushar Shinde , Linux NFS Mailing List Content-Type: text/plain; charset=UTF-8 Sender: linux-nfs-owner@vger.kernel.org List-ID: Rename "async" to "nodataconsistency"? Ced On 11 April 2016 at 18:41, J. Bruce Fields wrote: > (Moving discussion to linux-nfs list, as it's no longer a Ganesha > issue.) > > On Mon, Apr 11, 2016 at 08:40:50AM -0700, Frank Filz wrote: >> Use of async on knfsd is not fair to use in performance evaluation. I have >> long lobbied for renaming the async option to "I don't care about my data." > > Yes, renaming might be doable. "I_dont_care_about_my_data" is a little > cumbersome. I'm not sure what's best. Maybe "unsafe_commit"? Though > that might give the incorrect impression it's just about the commit > operation. > > I'm not sure how to manage the transition. > > - Even if they're using "async", they don't deserve to have > their server suddenly break on upgrade, so we need to continue > to respect "async" in existing /etc/exports files. > - Are there scripts that scan exports for "sync" or "async" > options anywhere, and how might they go wrong? Maybe I'm > overthinking this. > > Maybe it'd be good enough to: > > - keep kernel interfaces the same. > - in nfs-utils, use "unsafe_commit" in all output in place of > "async". Accept "async" as a synonym, but possibly warn that > it's been renamed. > > --b. > -- > 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 -- Cedric Blancher Institute Pasteur