kernel/tools/testing/selftests/ublk/test_null_01.sh, branch linux-rolling-stable

selftests: ublk: fix behavior when fio is not installed

2025-11-13T20:36:52Z

[ Upstream commit a3835a44107fcbf05f183b5e8b60a8e4605b15ea ] Some ublk selftests have strange behavior when fio is not installed. While most tests behave correctly (run if they don't need fio, or skip if they need fio), the following tests have different behavior: - test_null_01, test_null_02, test_generic_01, test_generic_02, and test_generic_12 try to run fio without checking if it exists first, and fail on any failure of the fio command (including "fio command not found"). So these tests fail when they should skip. - test_stress_05 runs fio without checking if it exists first, but doesn't fail on fio command failure. This test passes, but that pass is misleading as the test doesn't do anything useful without fio installed. So this test passes when it should skip. Fix these issues by adding _have_program fio checks to the top of all of these tests. Signed-off-by: Uday Shankar Reviewed-by: Ming Lei Signed-off-by: Jens Axboe Signed-off-by: Sasha Levin

selftests: ublk: improve test usability

2025-03-10T22:24:42Z

Add UBLK_TEST_QUIET, so we can print test result(PASS/SKIP/FAIL) only. Also always run from test script's current directory, then the same test script can be started from other work directory. This way helps a lot to reuse this test source code and scripts for other projects(liburing, blktests, ...) Signed-off-by: Ming Lei Link: https://lore.kernel.org/r/20250303124324.3563605-12-ming.lei@redhat.com Signed-off-by: Jens Axboe

selftests: ublk: move zero copy feature check into _add_ublk_dev()

2025-03-10T22:24:42Z

Move zero copy feature check into _add_ublk_dev() since we will have more tests which requires to cover zero copy. Then one check function of _check_add_dev() has to be added for dealing with cleanup since '_add_ublk_dev()' is run in sub-shell, and we can't exit from it to terminal shell. Meantime always return error code from _add_ublk_dev(). Signed-off-by: Ming Lei Link: https://lore.kernel.org/r/20250303124324.3563605-8-ming.lei@redhat.com Signed-off-by: Jens Axboe

selftests: ublk: don't pass ${dev_id} to _cleanup_test()

2025-03-10T22:24:42Z

More devices can be created in single tests, so simply remove all ublk devices in _cleanup_test(), meantime remove the ${dev_id} argument of _cleanup_test(). Signed-off-by: Ming Lei Link: https://lore.kernel.org/r/20250303124324.3563605-7-ming.lei@redhat.com Signed-off-by: Jens Axboe

selftests: ublk: support shellcheck and fix all warning

2025-03-10T22:24:42Z

Add shellcheck, meantime fixes all warnings. Signed-off-by: Ming Lei Link: https://lore.kernel.org/r/20250303124324.3563605-6-ming.lei@redhat.com Signed-off-by: Jens Axboe

selftests: ublk: add kernel selftests for ublk

2025-02-28T16:28:08Z

Both ublk driver and userspace heavily depends on io_uring subsystem, and tools/testing/selftests/ should be the best place for holding this cross-subsystem tests. Add basic read/write IO test over this ublk null disk, and make sure ublk working. More tests will be added. Signed-off-by: Ming Lei Link: https://lore.kernel.org/r/20250228161919.2869102-2-ming.lei@redhat.com Signed-off-by: Jens Axboe