apfstests/tests/ext4/271

#! /bin/bash
# FSQA Test No. 271
#
# Regression testcase for d583fb87a3ff0 (ext4 extent corruption)
#
#-----------------------------------------------------------------------
# Copyright (c) 2006 Silicon Graphics, Inc.  All Rights Reserved.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#
#-----------------------------------------------------------------------
#

seq=`basename $0`
seqres=$RESULT_DIR/$seq
echo "QA output created by $seq"

here=`pwd`
tmp=/tmp/$$
status=1	# failure is the default!
trap "rm -f $tmp.*; exit \$status" 0 1 2 3 15

# get standard environment, filters and checks
. ./common/rc
. ./common/filter

# real QA test starts here
_supported_fs ext4
_supported_os Linux
_need_to_be_root
_require_scratch

_scratch_mkfs_sized $((128 * 1024 * 1024)) >> $seqres.full 2>&1

# -onoload and EXT4_SYNC_FL on file is important becase result in
# metadata sync writes inside ext4_handle_dirty_metadata()
_scratch_mount -onoload
touch $SCRATCH_MNT/file
chattr +S $SCRATCH_MNT/file
# Create sparse file 
for ((i = 0; i < 21; i++))
do
    dd if=/dev/zero of=$SCRATCH_MNT/file bs=4k count=1 seek=$((i*10))
done
# truncate last extent
$XFS_IO_PROG -F -f -c "truncate $((4096*200))" $SCRATCH_MNT/file

if ! _scratch_unmount; then
	echo "failed to umount"
	status=1
	exit
fi
echo "Check filesystem"
_check_scratch_fs
status=$?
exit