[PATCH v2] xfs/529: Add test for printing deprec. mount options

[Pavel Reichl <preichl@redhat.com>]

Verify that warnings about deprecated mount options are properly
printed.

Verify that no excessive warnings are printed during remounts.

Signed-off-by: Pavel Reichl <preichl@redhat.com>
---
 tests/xfs/529     | 87 +++++++++++++++++++++++++++++++++++++++++++++++
 tests/xfs/529.out |  2 ++
 tests/xfs/group   |  1 +
 3 files changed, 90 insertions(+)
 create mode 100755 tests/xfs/529
 create mode 100644 tests/xfs/529.out

diff --git a/tests/xfs/529 b/tests/xfs/529
new file mode 100755
index 00000000..f90462c3
--- /dev/null
+++ b/tests/xfs/529
@@ -0,0 +1,87 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2020 Red Hat, Inc.. All Rights Reserved.
+#
+# FS QA Test 529
+#
+# https://bugzilla.kernel.org/show_bug.cgi?id=211605
+# Verify that the warnings are not printed on remount if the mount option has
+# the same value as during the mount
+#
+# Regression test for commit:
+# xfs: Skip repetitive warnings about mount options
+
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+	cd /
+	rm -f $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+_require_check_dmesg
+_supported_fs xfs
+_require_scratch
+
+log_tag()
+{
+	echo "fstests $seqnum [tag]" > /dev/kmsg
+}
+
+dmesg_since_test_tag()
+{
+	dmesg | tac | sed -ne "0,\#fstests $seqnum \[tag\]#p" | \
+		tac
+}
+
+check_dmesg_for_since_tag()
+{
+	dmesg_since_test_tag | egrep -q "$1"
+}
+
+echo "Silence is golden."
+
+
+# Skip old kernels that did not print the warning yet
+log_tag
+_scratch_mkfs > $seqres.full 2>&1
+_scratch_mount -o attr2
+_scratch_unmount
+check_dmesg_for_since_tag "XFS: attr2 mount option is deprecated" || \
+	_notrun "Deprecation warning are not printed at all."
+
+# Test mount with default options (attr2 and noikeep) and remount with
+# 2 groups of options
+# 1) the defaults (attr2, noikeep)
+# 2) non defaults (noattr2, ikeep)
+_scratch_mount
+for VAR in {attr2,noikeep}; do
+	log_tag
+	mount -o $VAR,remount $SCRATCH_MNT
+	check_dmesg_for_since_tag "XFS: $VAR mount option is deprecated." && \
+		echo "Should not be able to find deprecation warning for $VAR"
+done
+for VAR in {noattr2,ikeep}; do
+	log_tag
+	mount -o $VAR,remount $SCRATCH_MNT
+	check_dmesg_for_since_tag "XFS: $VAR mount option is deprecated" || \
+		echo "Could not find deprecation warning for $VAR"
+done
+_scratch_unmount
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/529.out b/tests/xfs/529.out
new file mode 100644
index 00000000..1b252fee
--- /dev/null
+++ b/tests/xfs/529.out
@@ -0,0 +1,2 @@
+QA output created by 529
+Silence is golden.
diff --git a/tests/xfs/group b/tests/xfs/group
index 288b916d..3e6cc415 100644
--- a/tests/xfs/group
+++ b/tests/xfs/group
@@ -505,3 +505,4 @@
 526 auto quick mkfs
 527 auto quick quota
 528 auto quick rw realtime
+529 auto quick mount
-- 
2.30.2