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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D8E93ECAAD8 for ; Wed, 21 Sep 2022 08:24:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231228AbiIUIXf (ORCPT ); Wed, 21 Sep 2022 04:23:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46974 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231250AbiIUIXa (ORCPT ); Wed, 21 Sep 2022 04:23:30 -0400 Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CBE03876A4; Wed, 21 Sep 2022 01:23:16 -0700 (PDT) Received: from pps.filterd (m0098419.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 28L8L8NC015160; Wed, 21 Sep 2022 08:23:15 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=message-id : date : mime-version : to : cc : references : from : subject : in-reply-to : content-type : content-transfer-encoding; s=pp1; bh=3aVfH+AgvYFT9Ahtj0jCANgIGt0Ia0rtxyCdGvkhSwc=; b=iEN/3DUpmrfe0YgCyxwURGlNtlTGqnrqUevUAuamfE6H5yVlghCwBuu6dsxA3TQAUnDc R52ddncnPz3nAQYpqsgQNFRetReTED51A305HHRUpDMg3jrtrpK3vTP85Pzt0GQxgO0W eyzJ5aXS75qrR8uS9dNTguJKo8ta+4nIBMQzQUoim42LpW2JgiEuVI0j/AalrRjj9pvN 1gUKS7xX9VhduoWE27oGKnQqtvtDcRvhuCSfVX90ZNH+qYL3l6LjH6nmvb9i/WqMwKCq WCz+EkOqdkqpi+fqeqFIcpnoubXK4A+dplB+B5OI4GsL7MM57+sDTD/6wiWwFVnM3m5S Iw== Received: from ppma01fra.de.ibm.com (46.49.7a9f.ip4.static.sl-reverse.com [159.122.73.70]) by mx0b-001b2d01.pphosted.com (PPS) with ESMTPS id 3jqxgyh4h6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 21 Sep 2022 08:23:14 +0000 Received: from pps.filterd (ppma01fra.de.ibm.com [127.0.0.1]) by ppma01fra.de.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 28L8M0EM019819; Wed, 21 Sep 2022 08:23:13 GMT Received: from b06cxnps4074.portsmouth.uk.ibm.com (d06relay11.portsmouth.uk.ibm.com [9.149.109.196]) by ppma01fra.de.ibm.com with ESMTP id 3jn5v8knm8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 21 Sep 2022 08:23:12 +0000 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 28L8N9KJ41484562 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 21 Sep 2022 08:23:09 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 728EEA4054; Wed, 21 Sep 2022 08:23:09 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C3DABA405C; Wed, 21 Sep 2022 08:23:07 +0000 (GMT) Received: from [9.65.239.211] (unknown [9.65.239.211]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTP; Wed, 21 Sep 2022 08:23:07 +0000 (GMT) Message-ID: Date: Wed, 21 Sep 2022 10:23:06 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.2.1 Content-Language: en-US To: Johannes Thumshirn , Jens Axboe Cc: "linux-block@vger.kernel.org" , Jan Hoeppner , "linux-s390@vger.kernel.org" , Heiko Carstens , Vasily Gorbik , Christian Borntraeger References: <20220920192616.808070-1-sth@linux.ibm.com> From: Stefan Haberland Subject: Re: [PATCH 0/7] s390/dasd: add hardware copy relation In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: JfW7H6vir5dxVDmuYCwluHUc2ShS35rD X-Proofpoint-ORIG-GUID: JfW7H6vir5dxVDmuYCwluHUc2ShS35rD X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.528,FMLib:17.11.122.1 definitions=2022-09-21_04,2022-09-20_02,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 adultscore=0 suspectscore=0 impostorscore=0 spamscore=0 clxscore=1011 mlxscore=0 phishscore=0 bulkscore=0 malwarescore=0 lowpriorityscore=0 mlxlogscore=778 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2209130000 definitions=main-2209210053 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Am 21.09.22 um 09:07 schrieb Johannes Thumshirn: > On 20.09.22 21:26, Stefan Haberland wrote: >> Hi Jens, >> >> please apply the following patchset to for-next. >> It adds basic support for a harwdare based copy relation to the DASD >> device driver. > Hi Stefan, > > How's the relation of this patchset to the current efforts of getting a common > copy offload API (NVMe Simple Copy and SCSI XCOPY) into the block-layer? > > > Thanks, > Johannes Hi Johannes, there is no relation to this efforts. My patchset basically aims to add some support of IBMs Peer-to-Peer-Remote-Copy (PPRC) hardware feature to the DASD device driver. PPRC is a protocol that might be used without any OS interaction on a storage server level. This patchset allows the driver to recognize such devices correctly and allows an user to make a copy relation known to the driver. In this case Linux is only an observer/user of the copy relation which is set up by an external entity. regards, Stefan