From 2d6acbaee42267f8c7e32ad6db2dcc8abc9df4df Mon Sep 17 00:00:00 2001
From: Qu Wenruo <wqu@suse.com>
Date: Tue, 5 Apr 2022 20:48:30 +0800
Subject: [PATCH] btrfs-progs: tests/fsck: add test case for data csum check on
 raid5

Previously 'btrfs check --check-data-csum' will report tons of false
alerts for RAID56.

Add a test case to make sure with the new RAID56 rebuild ability, there
should be no false alerts.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
---
 .../056-raid56-false-alerts/test.sh           | 31 +++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100755 tests/fsck-tests/056-raid56-false-alerts/test.sh

diff --git a/tests/fsck-tests/056-raid56-false-alerts/test.sh b/tests/fsck-tests/056-raid56-false-alerts/test.sh
new file mode 100755
index 00000000..6efb5c00
--- /dev/null
+++ b/tests/fsck-tests/056-raid56-false-alerts/test.sh
@@ -0,0 +1,31 @@
+#!/bin/bash
+#
+# Make sure "btrfs check --check-data-csum" won't report false alerts on RAID56
+# data.
+#
+
+source "$TEST_TOP/common"
+
+check_prereq btrfs
+check_prereq mkfs.btrfs
+check_global_prereq losetup
+
+setup_loopdevs 3
+prepare_loopdevs
+dev1=${loopdevs[1]}
+TEST_DEV=$dev1
+
+setup_root_helper
+
+run_check $SUDO_HELPER "$TOP/mkfs.btrfs" -f -m raid1 -d raid5 "${loopdevs[@]}"
+run_check_mount_test_dev
+
+run_check $SUDO_HELPER dd if=/dev/urandom of="$TEST_MNT/file" bs=16K count=1 \
+	status=noxfer > /dev/null 2>&1
+
+run_check_umount_test_dev
+
+# Check data csum should not report false alerts
+run_check "$TOP/btrfs" check --check-data-csum "$dev1"
+
+cleanup_loopdevs