From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com ([209.132.183.28]:44244 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751814AbdHaPzd (ORCPT ); Thu, 31 Aug 2017 11:55:33 -0400 Subject: Re: [PATCH] xfs: remove experimental tag for reflinks References: <20170830145400.3681-1-hch@lst.de> <20170831064033.GF3775@magnolia> <20170831124321.GA21939@bfoster.bfoster> <20170831133019.GA5468@lst.de> <20170831153148.GJ3775@magnolia> From: Eric Sandeen Message-ID: <4b7dda9e-f470-65b6-08d0-e862dc967cd4@redhat.com> Date: Thu, 31 Aug 2017 10:55:31 -0500 MIME-Version: 1.0 In-Reply-To: <20170831153148.GJ3775@magnolia> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-xfs-owner@vger.kernel.org List-ID: List-Id: xfs To: "Darrick J. Wong" , Christoph Hellwig Cc: Brian Foster , linux-xfs@vger.kernel.org, Dave Chinner On 8/31/17 10:31 AM, Darrick J. Wong wrote: > On Thu, Aug 31, 2017 at 03:30:19PM +0200, Christoph Hellwig wrote: >> On Thu, Aug 31, 2017 at 08:43:21AM -0400, Brian Foster wrote: >>> FWIW, I don't really have a strong opinion. To me, removing experimental >>> means we feel the code has stabilized long enough in principle, there >>> are no significant problems (i.e., corruption/crash vectors) that we are >>> aware of and the feature is complete (full userspace tool support, etc). >>> The in-core extent list thing seems like more of a general problem to me >> >> Agreed so far. > > Dave? Eric? Any perspective you'd like to offer? :) This is a bit of a naiive question, but how many applications are out there that can be used with reflink right now? This would obviously delay things a bit, but I had considered writing something up for LWN or Fedora Planet or $WHATEVER describing these new xfs features, how they can be used, and encourage some early-adopter testing. Try to get some buzz going and some real-world use. It's always a catch 22; nobody uses it until it's marked stable, but we never know if it's really stable until people outside the development community use it. ;) As for the allocation issues w/ the in core extent list, yeah, that worries me. -Eric