[PATCH blktests v3 11/13] zbd/003: Test sequential zones reset

[Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>]

From: Masato Suzuki <masato.suzuki@wdc.com>

Test zone reset operation to make sure that the BLKRESETZONE ioctl call
works as expected but also that the zone sector remapping that may be
done for logical devices (partitions or dm-linear devices) is correct.

Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Signed-off-by: Masato Suzuki <masato.suzuki@wdc.com>
---
 tests/zbd/003     | 78 +++++++++++++++++++++++++++++++++++++++++++++++
 tests/zbd/003.out |  2 ++
 2 files changed, 80 insertions(+)
 create mode 100755 tests/zbd/003
 create mode 100644 tests/zbd/003.out

diff --git a/tests/zbd/003 b/tests/zbd/003
new file mode 100755
index 0000000..b51f713
--- /dev/null
+++ b/tests/zbd/003
@@ -0,0 +1,78 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-3.0+
+# Copyright (C) 2018 Western Digital Corporation or its affiliates.
+#
+# Confirm that reset zone command for 2 contiguous sequential write
+# requried zones works as expected.
+
+. tests/zbd/rc
+
+DESCRIPTION="reset sequential required zones"
+QUICK=1
+CAN_BE_ZONED=1
+
+requires() {
+	_have_program blkzone
+}
+
+fallback_device() {
+	_fallback_null_blk_zoned
+}
+
+cleanup_fallback_device() {
+	_exit_null_blk
+}
+
+test_device() {
+	local -i zone_idx
+	local -a target_zones
+	local -i phys_blk_size
+
+	echo "Running ${TEST_NAME}"
+
+	# Get physical block size for dd
+	_get_sysfs_variable "${TEST_DEV}" || return $?
+	phys_blk_size=${SYSFS_VARS[$SV_PHYS_BLK_SIZE]}
+	_put_sysfs_variable
+
+	# Select 2 target zones so that reset zone range also get tested
+	_get_blkzone_report "${TEST_DEV}" || return $?
+	zone_idx=$(_find_two_contiguous_seq_zones) || return $?
+	target_zones=( "${zone_idx}" "$((zone_idx + 1))" )
+
+	# Reset the 2 target zones and write 4KB in each zone to increment
+	# their write pointer positions
+	_reset_zones "${TEST_DEV}" "${zone_idx}" "2"
+	for i in "${target_zones[@]}"; do
+		_dd "${TEST_DEV}" "write" "${ZONE_STARTS[$i]}" \
+		    "8" "${phys_blk_size}"
+	done
+	_put_blkzone_report
+
+	# Check that the write pointers have moved by 8x512 B sectors
+	_get_blkzone_report "${TEST_DEV}" || return $?
+	for i in "${target_zones[@]}"; do
+		if [[ ${ZONE_WPTRS[$i]} -ne 8 ]]; then
+			echo -n "Unexpected write poiter position in zone ${i} "
+			echo "wp: ${ZONE_WPTRS[i]}"
+			return 1
+		fi
+	done
+
+	# Reset the 2 target zones
+	_reset_zones "${TEST_DEV}" "${zone_idx}" "2"
+	_put_blkzone_report
+
+	# Check that the write pointers have moved back to position 0
+	_get_blkzone_report "${TEST_DEV}" || return $?
+	for i in "${target_zones[@]}"; do
+		if [[ ${ZONE_WPTRS[i]} -ne 0 ]]; then
+			echo -n "Unexpected non-zero write poiter in zone ${i} "
+			echo "wp: ${ZONE_WPTRS[i]}"
+			return 1
+		fi
+	done
+	_put_blkzone_report
+
+	echo "Test complete"
+}
diff --git a/tests/zbd/003.out b/tests/zbd/003.out
new file mode 100644
index 0000000..7326ae4
--- /dev/null
+++ b/tests/zbd/003.out
@@ -0,0 +1,2 @@
+Running zbd/003
+Test complete
-- 
2.20.1