linux/drivers/s390
Stefan Haberland 413862caad s390/dasd: add copy pair swap capability
In case of errors or misbehaviour of the primary device a controlled
failover to one of the configured secondary devices needs to be
performed.

The swap processing stops I/O on the primary device, all requests are
re-queued to the blocklayer queue, the entries in the copy relation are
swapped and finally the link to the blockdevice is moved from primary to
secondary dasd device.
After this, the secondary becomes the new primary device and I/O is
restarted on that device.

Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Link: https://lore.kernel.org/r/20220920192616.808070-5-sth@linux.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-09-21 08:32:51 -06:00
..
block s390/dasd: add copy pair swap capability 2022-09-21 08:32:51 -06:00
char s390 updates for 5.20 merge window 2022-08-06 17:05:21 -07:00
cio VFIO updates for v6.0-rc1 2022-08-06 08:59:35 -07:00
crypto s390/ap: fix crash on older machines based on QCI info missing 2022-08-15 17:19:52 +02:00
net s390/qeth: cache link_info for ethtool 2022-08-08 20:57:56 -07:00
scsi scsi: zfcp: Fix missing auto port scan and thus missing target ports 2022-08-01 19:50:00 -04:00
virtio virtio: Revert "virtio: find_vqs() add arg sizes" 2022-08-16 01:40:24 -04:00
Makefile