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selftests: ublk: add UBLK_F_IO_DESC_SIZE test

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Add test loop_08, which creates a ublk device with UBLK_F_IO_DESC_SIZE
enabled and io_desc_size set to 64. The test issues verified I/O to the
device using fio.

Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Link: https://patch.msgid.link/20260803211441.2538144-8-csander@purestorage.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Caleb Sander Mateos 2026-08-03 15:14:39 -06:00 committed by Jens Axboe
parent fc01b96d74
commit d61d0f95e6
2 changed files with 26 additions and 0 deletions
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1
tools/testing/selftests/ublk/Makefile
View File

@ -34,6 +34,7 @@ TEST_PROGS += test_loop_04.sh
TEST_PROGS += test_loop_05.sh
TEST_PROGS += test_loop_06.sh
TEST_PROGS += test_loop_07.sh
TEST_PROGS += test_loop_08.sh
TEST_PROGS += test_integrity_01.sh
TEST_PROGS += test_integrity_02.sh

25
tools/testing/selftests/ublk/test_loop_08.sh Executable file
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@ -0,0 +1,25 @@
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
. "$(cd "$(dirname "$0")" && pwd)"/test_common.sh
ERR_CODE=0
if ! _have_program fio; then
exit "$UBLK_SKIP_CODE"
fi
_prep_test "loop" "write and verify with io_desc_size"
_create_backfile 0 256M
dev_id=$(_add_ublk_dev -t loop --io_desc_size 64 "${UBLK_BACKFILES[0]}")
_check_add_dev $TID $?
# run fio over the ublk disk
_run_fio_verify_io --filename=/dev/ublkb"${dev_id}" --size=256M
ERR_CODE=$?
_cleanup_test
_show_result $TID $ERR_CODE