Return-Path: linux-nfs-owner@vger.kernel.org Received: from mx1.redhat.com ([209.132.183.28]:23991 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753350Ab3JCOYy (ORCPT ); Thu, 3 Oct 2013 10:24:54 -0400 Message-ID: <524D7E13.1010905@redhat.com> Date: Thu, 03 Oct 2013 10:24:19 -0400 From: Ric Wheeler MIME-Version: 1.0 To: Christoph Hellwig CC: Benny Halevy , "J. Bruce Fields" , linux-nfs@vger.kernel.org, Steven Whitehouse , Bob Peterson , Abhijith Das , Andrew Price , Paul Evans Subject: Re: [PATCH RFC v0 05/49] pnfsd: introduce pnfsd header files References: <20131001203047.GH16245@pad.fieldses.org> <524C0556.9070705@primarydata.com> <20131002160759.GB27988@infradead.org> <524D0873.40602@primarydata.com> <20131003095511.GA30147@infradead.org> <524D6312.7020709@primarydata.com> <524D6D38.1040506@redhat.com> <20131003131750.GA23408@infradead.org> <524D6EB9.3040309@redhat.com> <524D7CF3.6020306@primarydata.com> <20131003142127.GA16716@infradead.org> In-Reply-To: <20131003142127.GA16716@infradead.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-nfs-owner@vger.kernel.org List-ID: On 10/03/2013 10:21 AM, Christoph Hellwig wrote: > On Thu, Oct 03, 2013 at 05:19:31PM +0300, Benny Halevy wrote: >> The question is what is the minimum value for submitting upstream... >> >> The thing pnfs over dlm/gfs2 is missing mostly is supporting read/write layout. >> One could use them load balancing, e.g. by either redirecting to a node >> holding an exclusive lock on the file, if there is one, or dlm_ino_hash in its absence. > One could do a lot of things, especially given infinite time. But what > does the current code buy us? We need data on that to justify merging > such a large chunk of code. > I think that we can help figure out how to get something reasonably useful ready for upstream, just need to get some people spun up to help test out some of these ideas... ric