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
