From: Darrick J. Wong <djwong@kernel.org>
Date: Tue, 10 Mar 2026 03:50:39 +0000 (-0700)
Subject: xfs: test for metadata corruption error reporting via healthmon
X-Git-Tag: v2026.03.20~14
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=c90d3c12ffe181ff30afa1e5d2c587458da09a6f;p=xfstests-dev.git

xfs: test for metadata corruption error reporting via healthmon

Check if we can detect runtime metadata corruptions via the health
monitor.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Zorro Lang <zlang@redhat.com>
Signed-off-by: Zorro Lang <zlang@kernel.org>
---

diff --git a/tests/xfs/655 b/tests/xfs/655
new file mode 100755
index 00000000..a4162d70
--- /dev/null
+++ b/tests/xfs/655
@@ -0,0 +1,98 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2024-2026 Oracle.  All Rights Reserved.
+#
+# FS QA Test No. 655
+#
+# Corrupt some metadata and try to access it with the health monitoring program
+# running.  Check that healthmon observes a metadata error.
+#
+. ./common/preamble
+_begin_fstest auto quick eio selfhealing
+
+_cleanup()
+{
+	cd /
+	test -n "$healer_pid" && kill $healer_pid &>/dev/null
+	wait
+	rm -rf $tmp.* $testdir
+}
+
+. ./common/filter
+
+_require_scratch_nocheck
+_require_scratch_xfs_crc # can't detect minor corruption w/o crc
+_require_xfs_io_command healthmon
+
+# Disable the scratch rt device to avoid test failures relating to the rt
+# bitmap consuming all the free space in our small data device.
+unset SCRATCH_RTDEV
+
+echo "Format and mount"
+_scratch_mkfs -d agcount=1 | _filter_mkfs 2> $tmp.mkfs >> $seqres.full
+. $tmp.mkfs
+_scratch_mount
+mkdir $SCRATCH_MNT/a/
+# Enough entries to get to a single block directory
+for ((i = 0; i < ( (isize + 255) / 256); i++)); do
+	path="$(printf "%s/a/%0255d" "$SCRATCH_MNT" "$i")"
+	touch "$path"
+done
+inum="$(stat -c %i "$SCRATCH_MNT/a")"
+_scratch_unmount
+
+# Fuzz the directory block so that the touch below will be guaranteed to trip
+# a runtime sickness report in exactly the manner we desire.
+_scratch_xfs_db -x -c "inode $inum" -c "dblock 0" -c 'fuzz bhdr.hdr.owner add' -c print &>> $seqres.full
+
+# Try to allocate space to trigger a metadata corruption event
+echo "Runtime corruption detection"
+_scratch_mount
+$XFS_IO_PROG -c 'healthmon -c -v' $SCRATCH_MNT > $tmp.healthmon &
+healer_pid=$!
+sleep 1	# wait for program to start up
+touch $SCRATCH_MNT/a/farts &>> $seqres.full
+_scratch_unmount
+
+wait	# for healthmon to finish
+unset healer_pid
+
+# Did we get errors?
+check_healthmon()
+{
+	cat $tmp.healthmon >> $seqres.full
+	_filter_scratch < $tmp.healthmon | \
+		grep -E '(sick|corrupt)' | \
+		sed -e 's|SCRATCH_MNT/a|VICTIM|g' \
+		    -e 's|SCRATCH_MNT ino [0-9]* gen 0x[0-9a-f]*|VICTIM|g' | \
+		sort | \
+		uniq
+}
+check_healthmon
+
+# Run scrub to trigger a health event from there too.
+echo "Scrub corruption detection"
+_scratch_mount
+if _supports_xfs_scrub $SCRATCH_MNT $SCRATCH_DEV; then
+	$XFS_IO_PROG -c 'healthmon -c -v' $SCRATCH_MNT > $tmp.healthmon &
+	healer_pid=$!
+	sleep 1	# wait for program to start up
+	$XFS_SCRUB_PROG -n $SCRATCH_MNT &>> $seqres.full
+	_scratch_unmount
+
+	wait	# for healthmon to finish
+	unset healer_pid
+
+	# Did we get errors?
+	check_healthmon
+else
+	# mock the output since we don't support scrub
+	_scratch_unmount
+	cat << ENDL
+VICTIM directory: corrupt
+VICTIM directory: sick
+VICTIM parent: corrupt
+ENDL
+fi
+
+_exit 0
diff --git a/tests/xfs/655.out b/tests/xfs/655.out
new file mode 100644
index 00000000..f46d7fae
--- /dev/null
+++ b/tests/xfs/655.out
@@ -0,0 +1,8 @@
+QA output created by 655
+Format and mount
+Runtime corruption detection
+VICTIM directory: sick
+Scrub corruption detection
+VICTIM directory: corrupt
+VICTIM directory: sick
+VICTIM parent: corrupt