The testing of atomic writes support for stacked devices is limited. We only test scsi_debug and for a limited sets of personalities. Extend to test NVMe and also extend to the following stacked device personalities: - dm-linear - dm-stripe - dm-mirror Also add more strict atomic writes limits testing. Based on https://lore.kernel.org/linux-block/20250917114920.142996-1-shinichiro.kawasaki@xxxxxxx/#t Differences to v1: (all based on comments from Shin'ichiro) - Rebase on "support testing with multiple devices" series - clean up "make check" issues and other coding style issues - Relocate some NVMe helpers - Add _stacked_atomic_test_requires helper John Garry (9): common/rc: add _min() nvme: relocate _nvme_requires and _require_nvme_test_img_size nvme: relocate _require_test_dev_is_nvme md/rc: add _md_atomics_test md/002: convert to use _md_atomics_test md/003: add NVMe atomic write tests for stacked devices md/rc: test atomic writes for dm-linear md/rc: test atomic writes for dm-stripe md/rc: test atomic writes for dm-mirror common/nvme | 80 +++++++++ common/rc | 11 ++ tests/md/002 | 219 +---------------------- tests/md/002.out | 238 ++++++++++++++++++++----- tests/md/003 | 45 +++++ tests/md/003.out | 1 + tests/md/rc | 446 +++++++++++++++++++++++++++++++++++++++++++++++ tests/nvme/rc | 80 --------- 8 files changed, 784 insertions(+), 336 deletions(-) create mode 100755 tests/md/003 create mode 120000 tests/md/003.out -- 2.43.5
