[PATCH v2 7/8] selftests: ublk: add UBLK_F_IO_DESC_SIZE test

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 <[email protected]>
---
 tools/testing/selftests/ublk/Makefile        |  1 +
 tools/testing/selftests/ublk/test_loop_08.sh | 25 ++++++++++++++++++++
 2 files changed, 26 insertions(+)
 create mode 100755 tools/testing/selftests/ublk/test_loop_08.sh

diff --git a/tools/testing/selftests/ublk/Makefile b/tools/testing/selftests/ublk/Makefile
index 6e4fe8d1fed1..b00ef238a038 100644
--- a/tools/testing/selftests/ublk/Makefile
+++ b/tools/testing/selftests/ublk/Makefile
@@ -32,10 +32,11 @@ TEST_PROGS += test_loop_02.sh
 TEST_PROGS += test_loop_03.sh
 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
 TEST_PROGS += test_integrity_03.sh
 
diff --git a/tools/testing/selftests/ublk/test_loop_08.sh b/tools/testing/selftests/ublk/test_loop_08.sh
new file mode 100755
index 000000000000..f7af2587482d
--- /dev/null
+++ b/tools/testing/selftests/ublk/test_loop_08.sh
@@ -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
-- 
2.54.0