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[s390]: [IBM 9.2 FEAT] Transparent DASD PPRC (Peer-to-Peer Remote Copy) handling - kernel part

Tobias Huschle requested to merge thuschle/centos-stream-9:bz2044384 into main

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2044384

Tested: by IBM

Build-Info: http://brewweb.devel.redhat.com/brew/taskinfo?taskID=48369297

Commits:
db7ba07108a4 s390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup
2b43bf061b2e s390/dasd: put block allocation in separate function
3f217cceb684 s390/dasd: add query PPRC function
a91ff09d39f9 s390/dasd: add copy pair setup
413862caad6f s390/dasd: add copy pair swap capability
112ff512fc65 s390/dasd: add ioctl to perform a swap of the drivers copy pair
1fca631a1185 s390/dasd: suppress generic error messages for PPRC secondary devices
32ff8ce08b47 s390/dasd: add device ping attribute

Signed-off-by: Tobias Huschle thuschle@redhat.com

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