linux/tools/testing/selftests/ublk/test_stress_03.sh
Ming Lei 5223372e67 selftests: ublk: don't take same backing file for more than one ublk devices
Don't use same backing file for more than one ublk devices, and avoid
concurrent write on same file from more ublk disks.

Fixes: 8ccebc19ee ("selftests: ublk: support UBLK_F_AUTO_BUF_REG")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20250623011934.741788-3-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2025-06-24 20:45:31 -06:00

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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
. "$(cd "$(dirname "$0")" && pwd)"/test_common.sh
TID="stress_03"
ERR_CODE=0
ublk_io_and_remove()
{
run_io_and_remove "$@"
ERR_CODE=$?
if [ ${ERR_CODE} -ne 0 ]; then
echo "$TID failure: $*"
_show_result $TID $ERR_CODE
fi
}
if ! _have_program fio; then
exit "$UBLK_SKIP_CODE"
fi
if ! _have_feature "ZERO_COPY"; then
exit "$UBLK_SKIP_CODE"
fi
_prep_test "stress" "run IO and remove device(zero copy)"
_create_backfile 0 256M
_create_backfile 1 128M
_create_backfile 2 128M
ublk_io_and_remove 8G -t null -q 4 -z &
ublk_io_and_remove 256M -t loop -q 4 -z "${UBLK_BACKFILES[0]}" &
ublk_io_and_remove 256M -t stripe -q 4 -z "${UBLK_BACKFILES[1]}" "${UBLK_BACKFILES[2]}" &
wait
if _have_feature "AUTO_BUF_REG"; then
ublk_io_and_remove 8G -t null -q 4 --auto_zc &
ublk_io_and_remove 256M -t loop -q 4 --auto_zc "${UBLK_BACKFILES[0]}" &
ublk_io_and_remove 256M -t stripe -q 4 --auto_zc "${UBLK_BACKFILES[1]}" "${UBLK_BACKFILES[2]}" &
ublk_io_and_remove 8G -t null -q 4 -z --auto_zc --auto_zc_fallback &
wait
fi
if _have_feature "PER_IO_DAEMON"; then
ublk_io_and_remove 8G -t null -q 4 --auto_zc --nthreads 8 --per_io_tasks &
ublk_io_and_remove 256M -t loop -q 4 --auto_zc --nthreads 8 --per_io_tasks "${UBLK_BACKFILES[0]}" &
ublk_io_and_remove 256M -t stripe -q 4 --auto_zc --nthreads 8 --per_io_tasks "${UBLK_BACKFILES[1]}" "${UBLK_BACKFILES[2]}" &
ublk_io_and_remove 8G -t null -q 4 -z --auto_zc --auto_zc_fallback --nthreads 8 --per_io_tasks &
wait
fi
_cleanup_test "stress"
_show_result $TID $ERR_CODE