Return-Path: Received: from mail-pd0-f175.google.com ([209.85.192.175]:44258 "EHLO mail-pd0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752487AbbCHNJB (ORCPT ); Sun, 8 Mar 2015 09:09:01 -0400 Received: by pdjz10 with SMTP id z10so37173965pdj.11 for ; Sun, 08 Mar 2015 06:09:00 -0700 (PDT) References: <20150303221033.GB19439@fieldses.org> <20150303224456.GV4251@dastard> <20150304020826.GD19439@fieldses.org> <20150304044141.GQ18360@dastard> <20150305131901.GB16235@lst.de> Mime-Version: 1.0 (1.0) In-Reply-To: <20150305131901.GB16235@lst.de> Content-Type: text/plain; charset=us-ascii Message-Id: <07736642-EBA0-4F6B-B6BD-C7C5725A2DC6@primarydata.com> Cc: Dave Chinner , "J. Bruce Fields" , "linux-nfs@vger.kernel.org" , "xfs@oss.sgi.com" From: Tom Haynes Subject: Re: panic on 4.20 server exporting xfs filesystem Date: Sun, 8 Mar 2015 06:08:57 -0700 To: Christoph Hellwig Sender: linux-nfs-owner@vger.kernel.org List-ID: > On Mar 5, 2015, at 5:19 AM, Christoph Hellwig wrote: > >> On Wed, Mar 04, 2015 at 03:41:41PM +1100, Dave Chinner wrote: >> As I understand it, nothing will prevent this - if you don't change >> the UUID on the filesystem when you clone it, then the UUID will >> still match and writes can be directed to any block deice with a >> matching offset/UUID pair. > > Unfortunately that's the case indeed. The whole discovery part of > the block layout protocol is fundamentally flawed, as is the recall > part. This is my attempt to fix it, but I have no idea how to proceed > from posting my draft to the IETF to actually making it a standard: > > http://tools.ietf.org/html/draft-hellwig-nfsv4-scsi-layout-00 Let's be sure to talk about this at LSF...