[PATCH 7/7] btrfs-progs: add test for zone resetting

[Naohiro Aota <naohiro.aota@wdc.com>]

Add test for mkfs.btrfs's zone reset behavior to check if

- it resets all the zones without "-b" option
- it detects an active zone outside of the FS range
- it does not reset a zone outside of the range

Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
---
 tests/mkfs-tests/032-zoned-reset/test.sh | 62 ++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100755 tests/mkfs-tests/032-zoned-reset/test.sh

diff --git a/tests/mkfs-tests/032-zoned-reset/test.sh b/tests/mkfs-tests/032-zoned-reset/test.sh
new file mode 100755
index 000000000000..6a599dd2874f
--- /dev/null
+++ b/tests/mkfs-tests/032-zoned-reset/test.sh
@@ -0,0 +1,62 @@
+#!/bin/bash
+# Verify mkfs for zoned devices support block-group-tree feature
+
+source "$TEST_TOP/common" || exit
+
+setup_root_helper
+prepare_test_dev
+
+nullb="$TEST_TOP/nullb"
+# Create one 128M device with 4M zones, 32 of them
+size=128
+zone=4
+
+run_mayfail $SUDO_HELPER "$nullb" setup
+if [ $? != 0 ]; then
+	_not_run "cannot setup nullb environment for zoned devices"
+fi
+
+# Record any other pre-existing devices in case creation fails
+run_check $SUDO_HELPER "$nullb" ls
+
+# Last line has the name of the device node path
+out=$(run_check_stdout $SUDO_HELPER "$nullb" create -s "$size" -z "$zone")
+if [ $? != 0 ]; then
+	_fail "cannot create nullb zoned device $i"
+fi
+dev=$(echo "$out" | tail -n 1)
+name=$(basename "${dev}")
+
+run_check $SUDO_HELPER "$nullb" ls
+
+TEST_DEV="${dev}"
+last_zone_sector=$(( 4 * 31 * 1024 * 1024 / 512 ))
+# Write some data to the last zone
+run_check $SUDO_HELPER dd if=/dev/urandom of="${dev}" bs=1M count=4 seek=$(( 4 * 31 ))
+# Use single as it's supported on more kernels
+run_check $SUDO_HELPER "$TOP/mkfs.btrfs" -f -m single -d single "${dev}"
+# Check if the lat zone is empty
+$SUDO_HELPER blkzone report -o ${last_zone_sector} -c 1 "${dev}" | grep -Fq '(em)'
+if [ $? != 0 ]; then
+	_fail "last zone is not empty"
+fi
+
+# Write some data to the last zone
+run_check $SUDO_HELPER dd if=/dev/urandom of="${dev}" bs=1M count=1 seek=$(( 4 * 31 ))
+# Create a FS excluding the last zone
+run_mayfail $SUDO_HELPER "$TOP/mkfs.btrfs" -f -b $(( 4 * 31 ))M -m single -d single "${dev}"
+if [ $? == 0 ]; then
+	_fail "mkfs.btrfs should detect active zone outside of FS range"
+fi
+
+# Fill the last zone to finish it
+run_check $SUDO_HELPER dd if=/dev/urandom of="${dev}" bs=1M count=3 seek=$(( 4 * 31 + 1 ))
+# Create a FS excluding the last zone
+run_mayfail $SUDO_HELPER "$TOP/mkfs.btrfs" -f -b $(( 4 * 31 ))M -m single -d single "${dev}"
+# Check if the lat zone is not empty
+$SUDO_HELPER blkzone report -o ${last_zone_sector} -c 1 "${dev}" | grep -Fq '(em)'
+if [ $? == 0 ]; then
+	_fail "last zone is empty"
+fi
+
+run_check $SUDO_HELPER "$nullb" rm "${name}"
--
2.45.0