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| author | Stefan Haberland <sth@linux.ibm.com> | 2026-03-10 17:23:29 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2026-03-10 17:58:38 +0300 |
| commit | 40e9cd4ae8ec43b107ed2bff422a8fa39dcf4e4b (patch) | |
| tree | d1f536aefdfa988eb9669e0a90bda925246267bd | |
| parent | 155a3bedccaf57c69aa0b590ba3fb579debf3a4d (diff) | |
| download | linux-40e9cd4ae8ec43b107ed2bff422a8fa39dcf4e4b.tar.xz | |
s390/dasd: Move quiesce state with pprc swap
Quiesce and resume is a mechanism to suspend operations on DASD devices.
In the context of a controlled copy pair swap operation, the quiesce
operation is usually issued before the actual swap and a resume
afterwards.
During the swap operation, the underlying device is exchanged. Therefore,
the quiesce flag must be moved to the secondary device to ensure a
consistent quiesce state after the swap.
The secondary device itself cannot be suspended separately because there
is no separate block device representation for it.
Fixes: 413862caad6f ("s390/dasd: add copy pair swap capability")
Cc: stable@vger.kernel.org #6.1
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Link: https://patch.msgid.link/20260310142330.4080106-2-sth@linux.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | drivers/s390/block/dasd_eckd.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index b08e900687f3..e8f0e302a625 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -6182,6 +6182,11 @@ static int dasd_eckd_copy_pair_swap(struct dasd_device *device, char *prim_busid dev_name(&secondary->cdev->dev), rc); } + if (primary->stopped & DASD_STOPPED_QUIESCE) { + dasd_device_set_stop_bits(secondary, DASD_STOPPED_QUIESCE); + dasd_device_remove_stop_bits(primary, DASD_STOPPED_QUIESCE); + } + /* re-enable device */ dasd_device_remove_stop_bits(primary, DASD_STOPPED_PPRC); dasd_device_remove_stop_bits(secondary, DASD_STOPPED_PPRC); |