tests/ext4/036

#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2015 Red Hat Inc.  All Rights Reserved.
#
# FS QA Test No. ext4/036
#
# Test truncate orphan inodes when mounting ext4
# ext4 used to hit WARNING, this commit fixed the issue
#
# 721e3eb ext4: lock i_mutex when truncating orphan inodes
#
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

# real QA test starts here
_supported_fs ext3 ext4
_require_scratch

rm -f $seqres.full
echo "Silence is golden"

_scratch_mkfs_sized $((16*1024*1024)) >>$seqres.full 2>&1
_scratch_mount

# create a file and get its inode number, usually it's 12, but to be accurate
testfile=$SCRATCH_MNT/testfile
touch $testfile
inode=`ls -i $testfile | awk '{print $1}'`

# add the inode in orphan inode list
_scratch_unmount
debugfs -w -R "set_super_value last_orphan $inode" $SCRATCH_DEV \
	>>$seqres.full 2>&1

# mount again to truncate orphan inode, _check_dmesg will catch the WARNING
_scratch_mount

status=0
exit