generic: test project id recovery after power failure

After fsync, filesystem should guarantee inode metadata including
project id being persisted, so even after sudden power-cut, during
mount, we should recover project_id fields correctly, in order to
not loss those meta info.

So adding this testcase to check whether generic filesystem can
guarantee that.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>

common/config

@@ -170,6 +170,7 @@ export WIPEFS_PROG="$(type -P wipefs)"
 export DUMP_PROG="$(type -P dump)"
 export RESTORE_PROG="$(type -P restore)"
 export LVM_PROG="$(type -P lvm)"
+export LSATTR_PROG="$(type -P lsattr)"
 export CHATTR_PROG="$(type -P chattr)"
 export DEBUGFS_PROG="$(type -P debugfs)"
 export UUIDGEN_PROG="$(type -P uuidgen)"

tests/generic/506

@@ -0,0 +1,97 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2018 Huawei.  All Rights Reserved.
+#
+# FS QA Test 506
+#
+# This testcase is trying to test recovery flow of generic filesystem, w/ below
+# steps, once project id changes, after we fsync that file, we can expect that
+# project id can be recovered after sudden power-cuts.
+# 1. touch testfile;
+# 1.1 sync (optional)
+# 2. chattr -p 100 testfile;
+# 3. xfs_io -f testfile -c "fsync";
+# 4. godown;
+# 5. umount;
+# 6. mount;
+# 7. check project id
+#
+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
+. ./common/filter
+. ./common/quota
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+_supported_fs generic
+_supported_os Linux
+
+_require_command "$LSATTR_PROG" lsattr
+_require_command "$CHATTR_PROG" chattr
+
+_require_prjquota $SCRATCH_DEV
+_require_scratch
+_require_scratch_shutdown
+
+_scratch_mkfs >/dev/null 2>&1
+_require_metadata_journaling $SCRATCH_DEV
+
+testfile=$SCRATCH_MNT/testfile
+
+do_check()
+{
+	_scratch_mount
+
+	touch $testfile
+
+	if [ "$1" == "sync" ]; then
+		sync
+	fi
+
+	$CHATTR_PROG -p 100 $testfile
+
+	before=`$LSATTR_PROG -p $testfile`
+
+	$XFS_IO_PROG -f $testfile -c "fsync" | _filter_xfs_io
+
+	_scratch_shutdown | tee -a $seqres.full
+	_scratch_cycle_mount
+
+	after=`$LSATTR_PROG -p $testfile`
+
+	# check inode's project quota id
+	if [ "$before" != "$after" ]; then
+		echo "Before: $before"
+		echo "After : $after"
+	fi
+	echo "Before: $before" >> $seqres.full
+	echo "After : $after" >> $seqres.full
+
+	rm -f $testfile
+	_scratch_unmount
+}
+
+echo "Silence is golden"
+
+do_check
+do_check sync
+
+status=0
+exit

tests/generic/506.out

@@ -0,0 +1,2 @@
+QA output created by 506
+Silence is golden

tests/generic/group

@@ -508,3 +508,4 @@
 503 auto quick dax punch collapse zero
 504 auto quick locks
 505 shutdown auto quick metadata
+506 shutdown auto quick metadata quota