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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4E8C8C433EF for ; Fri, 29 Oct 2021 08:14:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2B57C61165 for ; Fri, 29 Oct 2021 08:14:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232363AbhJ2IRT (ORCPT ); Fri, 29 Oct 2021 04:17:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44770 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232392AbhJ2IRS (ORCPT ); Fri, 29 Oct 2021 04:17:18 -0400 Received: from mail-wr1-x42a.google.com (mail-wr1-x42a.google.com [IPv6:2a00:1450:4864:20::42a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7CB6CC061570 for ; Fri, 29 Oct 2021 01:14:50 -0700 (PDT) Received: by mail-wr1-x42a.google.com with SMTP id i5so7244791wrb.2 for ; Fri, 29 Oct 2021 01:14:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=javigon-com.20210112.gappssmtp.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:content-transfer-encoding:in-reply-to; bh=8ddftgpK0LDx+G+FjrkBslhvyIqXHl28zfgWlGOCfAA=; b=ZvbA6OirgjAS7+trJNLUfzUzxnDghd5zTvC77XLYSKiUJni+0fhVC882L/ZVeGk6nP /kqxXGYeIC8ozy0ThUYCWPYJj/TnAzJyT1FoDRlAW81PXLjx1H4dovtDjSUYxLWm89Fm QeYR518/SaS27GmrZdJnfY4dbWaImq1x9hLn6jWFVn9mzRPWjglKS8+xiGDRwDWz/iYO zYrVWby82S3kK8LXamSjv0A8Cb66H4Oml/LfuIsvJZgM75kD+NlXEN9xPLTHLb4g/Maz 3JCfMkKUJr7mv7erdqTMwWKCCXCZ8zHBaXoAeoSql0VKFMra1tHxcXHRWOHY5d7i4HUp zSSg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:content-transfer-encoding :in-reply-to; bh=8ddftgpK0LDx+G+FjrkBslhvyIqXHl28zfgWlGOCfAA=; b=y46ebK6bUmd4RHrD8AdPt8Dmu9xj4vq/Ufq5oqYOJGGJrilRrAduFBa0NJj4vq2RKp RQMVZEovvojzyksBbJnUGW2RwTBr/i/wxvJkHgHhk60n6Plv++RyfNUdRC14eLIicOIn zketdkdmXCgs+nHb1xEsFBNXe/Nnnf0QKrvLeDx3q9okDStZFRa1uxWzSN0nQH9CrRTK qnMTYFweBO89sza5z8UCAjkZDaLD1HtnPICUWcWKpgt+dc5eTuVaTIqXv0zi41a29zH9 nYRyHeqlcf/BJAafhkUyulztQzNNl9Yf8fnE9nWYUHFtsHwziygEnAxXk2PnN3Ih9p/y AvnA== X-Gm-Message-State: AOAM533Nd7WR6ZrnCCk6pGMhMcaMMOq1D2myNuZl1gu+4HSwjHl4jwc8 xhLT91D53wPGtdPXk9hb4oR+tZCOtBt9MDDGsn65MA== X-Google-Smtp-Source: ABdhPJz4KKl/vCIv4EZQxDSYhXgl6hLs1xW5oRUFqmNOfzBiIlxs2qrs7OEPigr3oNUptn2YXM3COQ== X-Received: by 2002:adf:e387:: with SMTP id e7mr1473005wrm.412.1635495289096; Fri, 29 Oct 2021 01:14:49 -0700 (PDT) Received: from localhost (5.186.124.144.cgn.fibianet.dk. [5.186.124.144]) by smtp.gmail.com with ESMTPSA id s3sm8001684wmh.30.2021.10.29.01.14.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 Oct 2021 01:14:48 -0700 (PDT) Date: Fri, 29 Oct 2021 10:14:47 +0200 From: Javier =?utf-8?B?R29uesOhbGV6?= To: Chaitanya Kulkarni Cc: Johannes Thumshirn , Chaitanya Kulkarni , "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" , "msnitzer@redhat.com" , "martin.petersen@oracle.com" , "roland@purestorage.com" , "mpatocka@redhat.com" , "hare@suse.de" , "kbusch@kernel.org" , "rwheeler@redhat.com" , "hch@lst.de" , "Frederick.Knight@netapp.com" , "zach.brown@ni.com" , "osandov@fb.com" , Adam Manzanares , SelvaKumar S , Nitesh Shetty , Kanchan Joshi , Vincent Fu , Bart Van Assche Subject: Re: [LSF/MM/BFP ATTEND] [LSF/MM/BFP TOPIC] Storage: Copy Offload Message-ID: <20211029081447.ativv64dofpqq22m@ArmHalley.local> References: <20210928191340.dcoj7qrclpudtjbo@mpHalley.domain_not_set.invalid> <20211006100523.7xrr3qpwtby3bw3a@mpHalley.domain_not_set.invalid> <20211008064925.oyjxbmngghr2yovr@mpHalley.local> <2a65e231-11dd-d5cc-c330-90314f6a8eae@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <2a65e231-11dd-d5cc-c330-90314f6a8eae@nvidia.com> Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On 29.10.2021 00:21, Chaitanya Kulkarni wrote: >On 10/7/21 11:49 PM, Javier González wrote: >> External email: Use caution opening links or attachments >> >> >> On 06.10.2021 10:33, Bart Van Assche wrote: >>> On 10/6/21 3:05 AM, Javier González wrote: >>>> I agree that the topic is complex. However, we have not been able to >>>> find a clear path forward in the mailing list. >>> >>> Hmm ... really? At least Martin Petersen and I consider device mapper >>> support essential. How about starting from Mikulas' patch series that >>> supports the device mapper? See also >>> https://lore.kernel.org/all/alpine.LRH.2.02.2108171630120.30363@file01.intranet.prod.int.rdu2.redhat.com/ >>> > >When we add a new REQ_OP_XXX we need to make sure it will work with >device mapper, so I agree with Bart and Martin. > >Starting with Mikulas patches is a right direction as of now.. > >> >> Thanks for the pointers. We are looking into Mikulas' patch - I agree >> that it is a good start. >> >>>> What do you think about joining the call to talk very specific next >>>> steps to get a patchset that we can start reviewing in detail. >>> >>> I can do that. >> >> Thanks. I will wait until Chaitanya's reply on his questions. We will >> start suggesting some dates then. >> > >I think at this point we need to at least decide on having a first call >focused on how to proceed forward with Mikulas approach ... > >Javier, can you please organize a call with people you listed in this >thread earlier ? Here you have a Doogle for end of next week and the week after OCP. Please fill it out until Wednesday. I will set up a call with the selected slot: https://doodle.com/poll/r2c8duy3r8g88v8q?utm_source=poll&utm_medium=link Thanks, Javier 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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EBE66C433F5 for ; Fri, 29 Oct 2021 11:11:48 +0000 (UTC) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6696D61130 for ; Fri, 29 Oct 2021 11:11:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6696D61130 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=javigon.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=redhat.com Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-412-8lqlKobaPxy842zk_8prXA-1; Fri, 29 Oct 2021 07:11:43 -0400 X-MC-Unique: 8lqlKobaPxy842zk_8prXA-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 1DFCB9F943; Fri, 29 Oct 2021 11:11:39 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.20]) by smtp.corp.redhat.com (Postfix) with ESMTPS id C56EB60C13; Fri, 29 Oct 2021 11:11:38 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id 447491806D03; Fri, 29 Oct 2021 11:11:38 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id 19T8EwMC013447 for ; Fri, 29 Oct 2021 04:14:58 -0400 Received: by smtp.corp.redhat.com (Postfix) id 56068112131F; Fri, 29 Oct 2021 08:14:58 +0000 (UTC) Received: from mimecast-mx02.redhat.com (mimecast01.extmail.prod.ext.rdu2.redhat.com [10.11.55.17]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 4FD631121315 for ; Fri, 29 Oct 2021 08:14:54 +0000 (UTC) Received: from us-smtp-1.mimecast.com (us-smtp-1.mimecast.com [207.211.31.81]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 6A8F3899EC1 for ; Fri, 29 Oct 2021 08:14:54 +0000 (UTC) Received: from mail-wr1-f41.google.com (mail-wr1-f41.google.com [209.85.221.41]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-421-7ancoi6vMY2ei5oeGWZnxA-1; Fri, 29 Oct 2021 04:14:50 -0400 X-MC-Unique: 7ancoi6vMY2ei5oeGWZnxA-1 Received: by mail-wr1-f41.google.com with SMTP id m22so15006514wrb.0 for ; Fri, 29 Oct 2021 01:14:50 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:content-transfer-encoding :in-reply-to; bh=8ddftgpK0LDx+G+FjrkBslhvyIqXHl28zfgWlGOCfAA=; b=opVyg0slkq9r32R/+ppJ3dM7SBsDeMc6EwSxE2iC1UcKoZf5S3Mahg54exI9f+dSYy Ecqj0E1hhuXF9B6fXmF8aWy3nzphQb5YMLMlfqyA0DxTMcpQkKbLM6swbbmRQHBt0QcU BFaTPfxcey5IYmfL9kEx4+zjnM9OHs62KECdREoEigfbeZV/dskCMX+3J9zcKcU+8luK fP/k/7QhkwqezCDdLHc0/3yWjeSLwmCmZ1MsA2fMnZuxGeeUn53VQZOBJpxSAfLQX1Xp wO4al/Sx2WsPUjiJ6GPTta+XJutYoWTQglEw7mbAOkscte1X/eSHaBpmXAJ97Bf0W5mP ca+g== X-Gm-Message-State: AOAM530QpoG/nGhtHhnvG+m6jNNmaEL67TLMZJUbm0x+EjQfGpgOqGZI UwfTDJDzjgjf+Z+f6UxHNoIf7A== X-Google-Smtp-Source: ABdhPJz4KKl/vCIv4EZQxDSYhXgl6hLs1xW5oRUFqmNOfzBiIlxs2qrs7OEPigr3oNUptn2YXM3COQ== X-Received: by 2002:adf:e387:: with SMTP id e7mr1473005wrm.412.1635495289096; Fri, 29 Oct 2021 01:14:49 -0700 (PDT) Received: from localhost (5.186.124.144.cgn.fibianet.dk. [5.186.124.144]) by smtp.gmail.com with ESMTPSA id s3sm8001684wmh.30.2021.10.29.01.14.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 Oct 2021 01:14:48 -0700 (PDT) Date: Fri, 29 Oct 2021 10:14:47 +0200 From: Javier =?utf-8?B?R29uesOhbGV6?= To: Chaitanya Kulkarni Message-ID: <20211029081447.ativv64dofpqq22m@ArmHalley.local> References: <20210928191340.dcoj7qrclpudtjbo@mpHalley.domain_not_set.invalid> <20211006100523.7xrr3qpwtby3bw3a@mpHalley.domain_not_set.invalid> <20211008064925.oyjxbmngghr2yovr@mpHalley.local> <2a65e231-11dd-d5cc-c330-90314f6a8eae@nvidia.com> MIME-Version: 1.0 In-Reply-To: <2a65e231-11dd-d5cc-c330-90314f6a8eae@nvidia.com> X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-loop: dm-devel@redhat.com X-Mailman-Approved-At: Fri, 29 Oct 2021 07:06:18 -0400 Cc: Vincent Fu , "linux-nvme@lists.infradead.org" , "dm-devel@redhat.com" , Adam Manzanares , "osandov@fb.com" , "msnitzer@redhat.com" , Bart Van Assche , "linux-scsi@vger.kernel.org" , "hch@lst.de" , "roland@purestorage.com" , Nitesh Shetty , "zach.brown@ni.com" , SelvaKumar S , Chaitanya Kulkarni , "linux-block@vger.kernel.org" , "mpatocka@redhat.com" , "kbusch@kernel.org" , "Frederick.Knight@netapp.com" , "axboe@kernel.dk" , Kanchan Joshi , "martin.petersen@oracle.com" , Johannes Thumshirn , "lsf-pc@lists.linux-foundation.org" , "rwheeler@redhat.com" Subject: Re: [dm-devel] [LSF/MM/BFP ATTEND] [LSF/MM/BFP TOPIC] Storage: Copy Offload X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dm-devel-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Disposition: inline Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" T24gMjkuMTAuMjAyMSAwMDoyMSwgQ2hhaXRhbnlhIEt1bGthcm5pIHdyb3RlOgo+T24gMTAvNy8y MSAxMTo0OSBQTSwgSmF2aWVyIEdvbnrDoWxleiB3cm90ZToKPj4gRXh0ZXJuYWwgZW1haWw6IFVz ZSBjYXV0aW9uIG9wZW5pbmcgbGlua3Mgb3IgYXR0YWNobWVudHMKPj4KPj4KPj4gT24gMDYuMTAu MjAyMSAxMDozMywgQmFydCBWYW4gQXNzY2hlIHdyb3RlOgo+Pj4gT24gMTAvNi8yMSAzOjA1IEFN LCBKYXZpZXIgR29uesOhbGV6IHdyb3RlOgo+Pj4+IEkgYWdyZWUgdGhhdCB0aGUgdG9waWMgaXMg Y29tcGxleC4gSG93ZXZlciwgd2UgaGF2ZSBub3QgYmVlbiBhYmxlIHRvCj4+Pj4gZmluZCBhIGNs ZWFyIHBhdGggZm9yd2FyZCBpbiB0aGUgbWFpbGluZyBsaXN0Lgo+Pj4KPj4+IEhtbSAuLi4gcmVh bGx5PyBBdCBsZWFzdCBNYXJ0aW4gUGV0ZXJzZW4gYW5kIEkgY29uc2lkZXIgZGV2aWNlIG1hcHBl cgo+Pj4gc3VwcG9ydCBlc3NlbnRpYWwuIEhvdyBhYm91dCBzdGFydGluZyBmcm9tIE1pa3VsYXMn IHBhdGNoIHNlcmllcyB0aGF0Cj4+PiBzdXBwb3J0cyB0aGUgZGV2aWNlIG1hcHBlcj8gU2VlIGFs c28KPj4+IGh0dHBzOi8vbG9yZS5rZXJuZWwub3JnL2FsbC9hbHBpbmUuTFJILjIuMDIuMjEwODE3 MTYzMDEyMC4zMDM2M0BmaWxlMDEuaW50cmFuZXQucHJvZC5pbnQucmR1Mi5yZWRoYXQuY29tLwo+ Pj4KPgo+V2hlbiB3ZSBhZGQgYSBuZXcgUkVRX09QX1hYWCB3ZSBuZWVkIHRvIG1ha2Ugc3VyZSBp dCB3aWxsIHdvcmsgd2l0aAo+ZGV2aWNlIG1hcHBlciwgc28gSSBhZ3JlZSB3aXRoIEJhcnQgYW5k IE1hcnRpbi4KPgo+U3RhcnRpbmcgd2l0aCBNaWt1bGFzIHBhdGNoZXMgaXMgYSByaWdodCBkaXJl Y3Rpb24gYXMgb2Ygbm93Li4KPgo+Pgo+PiBUaGFua3MgZm9yIHRoZSBwb2ludGVycy4gV2UgYXJl IGxvb2tpbmcgaW50byBNaWt1bGFzJyBwYXRjaCAtIEkgYWdyZWUKPj4gdGhhdCBpdCBpcyBhIGdv b2Qgc3RhcnQuCj4+Cj4+Pj4gV2hhdCBkbyB5b3UgdGhpbmsgYWJvdXQgam9pbmluZyB0aGUgY2Fs bCB0byB0YWxrIHZlcnkgc3BlY2lmaWMgbmV4dAo+Pj4+IHN0ZXBzIHRvIGdldCBhIHBhdGNoc2V0 IHRoYXQgd2UgY2FuIHN0YXJ0IHJldmlld2luZyBpbiBkZXRhaWwuCj4+Pgo+Pj4gSSBjYW4gZG8g dGhhdC4KPj4KPj4gVGhhbmtzLiBJIHdpbGwgd2FpdCB1bnRpbCBDaGFpdGFueWEncyByZXBseSBv biBoaXMgcXVlc3Rpb25zLiBXZSB3aWxsCj4+IHN0YXJ0IHN1Z2dlc3Rpbmcgc29tZSBkYXRlcyB0 aGVuLgo+Pgo+Cj5JIHRoaW5rIGF0IHRoaXMgcG9pbnQgd2UgbmVlZCB0byBhdCBsZWFzdCBkZWNp ZGUgb24gaGF2aW5nIGEgZmlyc3QgY2FsbAo+Zm9jdXNlZCBvbiBob3cgdG8gcHJvY2VlZCBmb3J3 YXJkIHdpdGggTWlrdWxhcyBhcHByb2FjaCAgLi4uCj4KPkphdmllciwgY2FuIHlvdSBwbGVhc2Ug b3JnYW5pemUgYSBjYWxsIHdpdGggcGVvcGxlIHlvdSBsaXN0ZWQgaW4gdGhpcwo+dGhyZWFkIGVh cmxpZXIgPwoKSGVyZSB5b3UgaGF2ZSBhIERvb2dsZSBmb3IgZW5kIG9mIG5leHQgd2VlayBhbmQg dGhlIHdlZWsgYWZ0ZXIgT0NQLgpQbGVhc2UgZmlsbCBpdCBvdXQgdW50aWwgV2VkbmVzZGF5LiBJ IHdpbGwgc2V0IHVwIGEgY2FsbCB3aXRoIHRoZQpzZWxlY3RlZCBzbG90OgoKICAgICBodHRwczov L2Rvb2RsZS5jb20vcG9sbC9yMmM4ZHV5M3I4Zzg4djhxP3V0bV9zb3VyY2U9cG9sbCZ1dG1fbWVk aXVtPWxpbmsKClRoYW5rcywKSmF2aWVyCgotLQpkbS1kZXZlbCBtYWlsaW5nIGxpc3QKZG0tZGV2 ZWxAcmVkaGF0LmNvbQpodHRwczovL2xpc3RtYW4ucmVkaGF0LmNvbS9tYWlsbWFuL2xpc3RpbmZv L2RtLWRldmVs