On 21.09.22 10:23, Stefan Haberland wrote: > 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. Thanks for the clarification.
