zbd/003: Test sequential zones reset

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>

diff --git a/tests/zbd/003 b/tests/zbd/003
new file mode 100755 (executable)
index 0000000..079be02
--- /dev/null
+++ b/tests/zbd/003
@@ -0,0 +1,82 @@
+#!/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 bs
+
+       echo "Running ${TEST_NAME}"
+
+       # Get physical block size as dd block size to meet zoned block device
+       # requirement
+       _get_sysfs_variable "${TEST_DEV}" || return $?
+       bs=${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
+               if ! dd bs=${bs} count=$(( 4096 / bs )) \
+                    if=/dev/zero of="${TEST_DEV}" oflag=direct \
+                    seek=$((ZONE_STARTS[i] * 512 / bs)) >> "$FULL" 2>&1 ; then
+                       echo "dd failed"
+               fi
+       done
+       _put_blkzone_report
+
+       # Check that the write pointers have moved by 8x512 B sectors
+       _get_blkzone_report "${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 (file)
index 0000000..7326ae4
--- /dev/null
+++ b/tests/zbd/003.out
@@ -0,0 +1,2 @@
+Running zbd/003
+Test complete