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selftests: ublk: add end-to-end integrity test

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Add test case loop_08 to verify the ublk integrity data flow. It uses
the kublk loop target to create a ublk device with integrity on top of
backing data and integrity files. It then writes to the whole device
with fio configured to generate integrity data. Then it reads back the
whole device with fio configured to verify the integrity data.
It also verifies that injected guard, reftag, and apptag corruptions are
correctly detected.

Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Caleb Sander Mateos 2026-01-08 02:19:47 -07:00 committed by Jens Axboe
parent 9e9f635525
commit 78796b6bae
2 changed files with 112 additions and 0 deletions
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1
tools/testing/selftests/ublk/Makefile
View File

@ -35,6 +35,7 @@ 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_stripe_01.sh
TEST_PROGS += test_stripe_02.sh
TEST_PROGS += test_stripe_03.sh

111
tools/testing/selftests/ublk/test_loop_08.sh Executable file
View File

@ -0,0 +1,111 @@
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
. "$(cd "$(dirname "$0")" && pwd)"/test_common.sh
if ! _have_program fio; then
exit $UBLK_SKIP_CODE
fi
fio_version=$(fio --version)
if [[ "$fio_version" =~ fio-[0-9]+\.[0-9]+$ ]]; then
echo "Requires development fio version with https://github.com/axboe/fio/pull/1992"
exit $UBLK_SKIP_CODE
fi
TID=loop_08
_prep_test "loop" "end-to-end integrity"
_create_backfile 0 256M
_create_backfile 1 32M # 256M * (64 integrity bytes / 512 data bytes)
integrity_params="--integrity_capable --integrity_reftag
--metadata_size 64 --pi_offset 56 --csum_type t10dif"
dev_id=$(_add_ublk_dev -t loop -u $integrity_params "${UBLK_BACKFILES[@]}")
_check_add_dev $TID $?
# 1M * (64 integrity bytes / 512 data bytes) = 128K
fio_args="--ioengine io_uring --direct 1 --bsrange 512-1M --iodepth 32
--md_per_io_size 128K --pi_act 0 --pi_chk GUARD,REFTAG,APPTAG
--filename /dev/ublkb$dev_id"
fio --name fill --rw randwrite $fio_args > /dev/null
err=$?
if [ $err != 0 ]; then
echo "fio fill failed"
_show_result $TID $err
fi
fio --name verify --rw randread $fio_args > /dev/null
err=$?
if [ $err != 0 ]; then
echo "fio verify failed"
_show_result $TID $err
fi
fio_err=$(mktemp fio_err_XXXXX)
# Overwrite 4-byte reftag at offset 56 + 4 = 60
dd_reftag_args="bs=1 seek=60 count=4 oflag=dsync conv=notrunc status=none"
dd if=/dev/urandom "of=${UBLK_BACKFILES[1]}" $dd_reftag_args
err=$?
if [ $err != 0 ]; then
echo "dd corrupted_reftag failed"
rm -f "$fio_err"
_show_result $TID $err
fi
if fio --name corrupted_reftag --rw randread $fio_args > /dev/null 2> "$fio_err"; then
echo "fio corrupted_reftag unexpectedly succeeded"
rm -f "$fio_err"
_show_result $TID 255
fi
expected_err="REFTAG compare error: LBA: 0 Expected=0, Actual="
if ! grep -q "$expected_err" "$fio_err"; then
echo "fio corrupted_reftag message not found: $expected_err"
rm -f "$fio_err"
_show_result $TID 255
fi
# Reset to 0
dd if=/dev/zero "of=${UBLK_BACKFILES[1]}" $dd_reftag_args
err=$?
if [ $err != 0 ]; then
echo "dd restore corrupted_reftag failed"
rm -f "$fio_err"
_show_result $TID $err
fi
dd_data_args="bs=512 count=1 oflag=direct,dsync conv=notrunc status=none"
dd if=/dev/zero "of=${UBLK_BACKFILES[0]}" $dd_data_args
err=$?
if [ $err != 0 ]; then
echo "dd corrupted_data failed"
rm -f "$fio_err"
_show_result $TID $err
fi
if fio --name corrupted_data --rw randread $fio_args > /dev/null 2> "$fio_err"; then
echo "fio corrupted_data unexpectedly succeeded"
rm -f "$fio_err"
_show_result $TID 255
fi
expected_err="Guard compare error: LBA: 0 Expected=0, Actual="
if ! grep -q "$expected_err" "$fio_err"; then
echo "fio corrupted_data message not found: $expected_err"
rm -f "$fio_err"
_show_result $TID 255
fi
if fio --name bad_apptag --rw randread $fio_args --apptag 0x4321 > /dev/null 2> "$fio_err"; then
echo "fio bad_apptag unexpectedly succeeded"
rm -f "$fio_err"
_show_result $TID 255
fi
expected_err="APPTAG compare error: LBA: [0-9]* Expected=4321, Actual=1234"
if ! grep -q "$expected_err" "$fio_err"; then
echo "fio bad_apptag message not found: $expected_err"
rm -f "$fio_err"
_show_result $TID 255
fi
rm -f "$fio_err"
_cleanup_test
_show_result $TID 0