apfstests/tests/generic/144

#! /bin/bash
# FS QA Test No. 144
#
# Ensure that fallocate steps around reflinked ranges:
#   - Reflink parts of two files together
#   - Fallocate all the other sparse space.
#   - Check that the reflinked areas are still there.
#
#-----------------------------------------------------------------------
# Copyright (c) 2015, 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 -rf "$tmp".* "$testdir"
}

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

# real QA test starts here
_supported_os Linux
_require_test_reflink
_require_cp_reflink
_require_xfs_io_command "falloc"
_require_xfs_io_command "truncate"

rm -f "$seqres.full"

testdir="$TEST_DIR/test-$seq"
rm -rf "$testdir"
mkdir "$testdir"

echo "Create the original files"
blksz=65536
_pwrite_byte 0x61 0 $((blksz * 5 + 37)) "$testdir/file1" >> "$seqres.full"

_reflink_range "$testdir/file1" $blksz "$testdir/file2" $blksz \
		$((blksz * 4 + 37)) >> "$seqres.full"

"$XFS_IO_PROG" -f -c "truncate $((blksz * 5 + 37))" "$testdir/file3" >> "$seqres.full"
_reflink_range "$testdir/file1" 0 "$testdir/file3" 0 $blksz >> "$seqres.full"

"$XFS_IO_PROG" -f -c "truncate $((blksz * 5 + 37))" "$testdir/file4" >> "$seqres.full"
_reflink_range "$testdir/file1" $blksz "$testdir/file4" $blksz $blksz >> "$seqres.full"
_reflink_range "$testdir/file1" $((blksz * 3)) "$testdir/file4" $((blksz * 3)) \
		$blksz >> "$seqres.full"

_cp_reflink "$testdir/file1" "$testdir/file5"
_test_remount

echo "Compare sections"
md5sum "$testdir/file1" | _filter_test_dir
md5sum "$testdir/file2" | _filter_test_dir
md5sum "$testdir/file3" | _filter_test_dir
md5sum "$testdir/file4" | _filter_test_dir
md5sum "$testdir/file5" | _filter_test_dir

_compare_range "$testdir/file1" $blksz "$testdir/file2" $blksz \
		$((blksz * 4 + 37)) \
	|| echo "shared parts of files 1-2 changed"

_compare_range "$testdir/file1" 0 "$testdir/file3" 0 $blksz \
	|| echo "shared parts of files 1-3 changed"

_compare_range "$testdir/file1" $blksz "$testdir/file4" $blksz $blksz \
	|| echo "shared parts of files 1-4 changed"

_compare_range "$testdir/file1" 0 "$testdir/file5" 0 $((blksz * 5 + 37)) \
	|| echo "shared parts of files 1-5 changed"

echo "Compare files"
c1="$(_md5_checksum "$testdir/file1")"
c2="$(_md5_checksum "$testdir/file2")"
c3="$(_md5_checksum "$testdir/file3")"
c4="$(_md5_checksum "$testdir/file4")"
c5="$(_md5_checksum "$testdir/file5")"

test "${c1}" != "${c2}" || echo "file1 and file2 should not match"
test "${c1}" != "${c3}" || echo "file1 and file3 should not match"
test "${c1}" != "${c4}" || echo "file1 and file4 should not match"
test "${c1}"  = "${c5}" || echo "file1 and file5 should match"
test "${c2}" != "${c3}" || echo "file2 and file3 should not match"
test "${c2}" != "${c4}" || echo "file2 and file4 should not match"
test "${c2}" != "${c5}" || echo "file2 and file5 should not match"
test "${c3}" != "${c4}" || echo "file3 and file4 should not match"
test "${c3}" != "${c5}" || echo "file3 and file5 should not match"
test "${c4}" != "${c5}" || echo "file4 and file5 should not match"

echo "falloc everything"
"$XFS_IO_PROG" -f -c "falloc 0 $((blksz * 5))" "$testdir/file2" >> "$seqres.full"
"$XFS_IO_PROG" -f -c "falloc 0 $((blksz * 5))" "$testdir/file3" >> "$seqres.full"
"$XFS_IO_PROG" -f -c "falloc 0 $((blksz * 5))" "$testdir/file4" >> "$seqres.full"
_test_remount

echo "Compare files"
md5sum "$testdir/file1" | _filter_test_dir
md5sum "$testdir/file2" | _filter_test_dir
md5sum "$testdir/file3" | _filter_test_dir
md5sum "$testdir/file4" | _filter_test_dir
md5sum "$testdir/file5" | _filter_test_dir

d1="$(_md5_checksum "$testdir/file1")"
d2="$(_md5_checksum "$testdir/file2")"
d3="$(_md5_checksum "$testdir/file3")"
d4="$(_md5_checksum "$testdir/file4")"
d5="$(_md5_checksum "$testdir/file5")"

test "${c1}" = "${d1}" || echo "file1 should not change"
test "${c2}" = "${d2}" || echo "file2 should not change"
test "${c3}" = "${d3}" || echo "file3 should not change"
test "${c4}" = "${d4}" || echo "file4 should not change"
test "${c5}" = "${d5}" || echo "file2 should not change"

# success, all done
status=0
exit