From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6E7F9C33C9E for ; Thu, 9 Jan 2020 00:52:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4B1112067D for ; Thu, 9 Jan 2020 00:52:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727168AbgAIAwE (ORCPT ); Wed, 8 Jan 2020 19:52:04 -0500 Received: from ale.deltatee.com ([207.54.116.67]:53500 "EHLO ale.deltatee.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726654AbgAIAwE (ORCPT ); Wed, 8 Jan 2020 19:52:04 -0500 Received: from s0106ac1f6bb1ecac.cg.shawcable.net ([70.73.163.230] helo=[192.168.11.155]) by ale.deltatee.com with esmtpsa (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.92) (envelope-from ) id 1ipM2z-0004er-Vz; Wed, 08 Jan 2020 17:51:38 -0700 To: =?UTF-8?Q?Javier_Gonz=c3=a1lez?= , Chaitanya Kulkarni Cc: "linux-block@vger.kernel.org" , "linux-scsi@vger.kernel.org" , "linux-nvme@lists.infradead.org" , "dm-devel@redhat.com" , "lsf-pc@lists.linux-foundation.org" , "axboe@kernel.dk" , "bvanassche@acm.org" , "hare@suse.de" , "Martin K. Petersen" , Keith Busch , Christoph Hellwig , Stephen Bates , "msnitzer@redhat.com" , "mpatocka@redhat.com" , "zach.brown@ni.com" , "roland@purestorage.com" , "rwheeler@redhat.com" , "frederick.knight@netapp.com" , Matias Bjorling , Kanchan Joshi , "stephen@eideticom.com" References: <20200108101759.32gkjxakxigolail@mpHalley.local> From: Logan Gunthorpe Message-ID: <7b3cc17c-6a34-56b9-8353-f86a4015669d@deltatee.com> Date: Wed, 8 Jan 2020 17:51:29 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.3.0 MIME-Version: 1.0 In-Reply-To: <20200108101759.32gkjxakxigolail@mpHalley.local> Content-Type: text/plain; charset=utf-8 Content-Language: en-CA Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 70.73.163.230 X-SA-Exim-Rcpt-To: stephen@eideticom.com, joshi.k@samsung.com, Matias.Bjorling@wdc.com, frederick.knight@netapp.com, rwheeler@redhat.com, roland@purestorage.com, zach.brown@ni.com, mpatocka@redhat.com, msnitzer@redhat.com, sbates@raithlin.com, hch@lst.de, kbusch@kernel.org, martin.petersen@oracle.com, hare@suse.de, bvanassche@acm.org, axboe@kernel.dk, lsf-pc@lists.linux-foundation.org, dm-devel@redhat.com, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, Chaitanya.Kulkarni@wdc.com, javier@javigon.com X-SA-Exim-Mail-From: logang@deltatee.com Subject: Re: [LSF/MM/BFP ATTEND] [LSF/MM/BFP TOPIC] Storage: Copy Offload X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On 2020-01-08 3:17 a.m., Javier González wrote: > I think this is good topic and I would like to participate in the > discussion too. I think that Logan Gunthorpe would also be interested > (Cc). Adding Kanchan too, who is also working on this and can contribute > to the discussion > > We discussed this in the context of P2P at different SNIA events in the > context of computational offloads and also as the backend implementation > for Simple Copy, which is coming in NVMe. Discussing this (again) at > LSF/MM and finding a way to finally get XCOPY merged would be great. Yes, I would definitely be interested in discussing copy offload especially in the context of P2P. Sorting out a userspace interface for this that supports a P2P use case would be very beneficial to a lot of folks. Thanks, Logan