From: Stefan Haberland <sth@linux.ibm.com>
To: Johannes Thumshirn <Johannes.Thumshirn@wdc.com>,
Jens Axboe <axboe@kernel.dk>
Cc: "linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
Jan Hoeppner <hoeppner@linux.ibm.com>,
"linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Christian Borntraeger <borntraeger@de.ibm.com>
Subject: Re: [PATCH 0/7] s390/dasd: add hardware copy relation
Date: Wed, 21 Sep 2022 10:23:06 +0200 [thread overview]
Message-ID: <cbf33cbb-e539-f5e1-16fd-f8e9aba83005@linux.ibm.com> (raw)
In-Reply-To: <PH0PR04MB741609C789F6A801747A64759B4F9@PH0PR04MB7416.namprd04.prod.outlook.com>
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
next prev parent reply other threads:[~2022-09-21 8:24 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-20 19:26 [PATCH 0/7] s390/dasd: add hardware copy relation Stefan Haberland
2022-09-20 19:26 ` [PATCH 1/7] s390/dasd: put block allocation in separate function Stefan Haberland
2022-09-20 19:26 ` [PATCH 2/7] s390/dasd: add query PPRC function Stefan Haberland
2022-09-20 19:26 ` [PATCH 3/7] s390/dasd: add copy pair setup Stefan Haberland
2022-09-20 19:26 ` [PATCH 4/7] s390/dasd: add copy pair swap capability Stefan Haberland
2022-09-20 19:26 ` [PATCH 5/7] s390/dasd: add ioctl to perform a swap of the drivers copy pair Stefan Haberland
2022-09-20 19:26 ` [PATCH 6/7] s390/dasd: suppress generic error messages for PPRC secondary devices Stefan Haberland
2022-09-20 19:26 ` [PATCH 7/7] s390/dasd: add device ping attribute Stefan Haberland
2022-09-21 7:07 ` [PATCH 0/7] s390/dasd: add hardware copy relation Johannes Thumshirn
2022-09-21 8:23 ` Stefan Haberland [this message]
2022-09-21 11:11 ` Johannes Thumshirn
2022-09-21 14:36 ` Jens Axboe
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