#! /bin/bash
# FS QA Test No. 115
#
# Moving and deleting cloned ("reflinked") files on btrfs:
#   - Create a file and a reflink
#   - Move both to a directory
#   - Delete the original (moved) file, check that the copy still exists.
#
#-----------------------------------------------------------------------
# Copyright (c) 2014, Oracle and/or its affiliates.  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 "_cleanup; exit \$status" 0 1 2 3 15

_cleanup()
{
    cd /
    rm -f $tmp.* "$TESTDIR"
}

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

# real QA test starts here
_require_test_reflink
_supported_os Linux

_require_xfs_io_command "fiemap"
_require_cp_reflink
_require_test

rm -f $seqres.full

TESTDIR1=$TEST_DIR/test-$seq
rm -rf $TESTDIR1
mkdir $TESTDIR1

echo "Create the original files and reflink dirs"
$XFS_IO_PROG -f -c 'pwrite -S 0x61 0 9000' $TESTDIR1/original \
    >> $seqres.full
cp --reflink $TESTDIR1/original $TESTDIR1/copy

_verify_reflink $TESTDIR1/original $TESTDIR1/copy

echo "Move orig & reflink copy to subdir and md5sum:"
mkdir $TESTDIR1/subdir
mv $TESTDIR1/original $TESTDIR1/subdir/original_moved
mv $TESTDIR1/copy $TESTDIR1/subdir/copy_moved
_verify_reflink $TESTDIR1/subdir/original_moved \
    $TESTDIR1/subdir/copy_moved

md5sum $TESTDIR1/subdir/original_moved | _filter_test_dir
md5sum $TESTDIR1/subdir/copy_moved | _filter_test_dir

echo "remove orig from subdir and md5sum reflink copy:"
rm $TESTDIR1/subdir/original_moved
md5sum $TESTDIR1/subdir/copy_moved | _filter_test_dir
rm -rf $TESTDIR1/subdir

# success, all done
status=0
exit