apfstests/tests/generic/146

#! /bin/bash
# FS QA Test No. 146
#
# Ensure that punch-hole steps around reflinked ranges:
#   - Create three reflink clones of a file
#   - Punch the start, middle, and end of the reflink range of each
#     of the three files, respectively
#   - 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 "fpunch"

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 $BLKSZ "$TESTDIR/file1" >> "$seqres.full"
_pwrite_byte 0x62 $BLKSZ $BLKSZ "$TESTDIR/file1" >> "$seqres.full"
_pwrite_byte 0x63 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file1" >> "$seqres.full"

_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2"
_cp_reflink "$TESTDIR/file1" "$TESTDIR/file3"
_cp_reflink "$TESTDIR/file1" "$TESTDIR/file4"

_pwrite_byte 0x00 0 $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
_pwrite_byte 0x62 $BLKSZ $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
_pwrite_byte 0x63 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"

_pwrite_byte 0x61 0 $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
_pwrite_byte 0x00 $BLKSZ $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
_pwrite_byte 0x63 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"

_pwrite_byte 0x61 0 $BLKSZ "$TESTDIR/file4.chk" >> "$seqres.full"
_pwrite_byte 0x62 $BLKSZ $BLKSZ "$TESTDIR/file4.chk" >> "$seqres.full"
_pwrite_byte 0x00 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file4.chk" >> "$seqres.full"
_test_remount

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 "$TESTDIR/file2.chk" | _filter_test_dir
md5sum "$TESTDIR/file3.chk" | _filter_test_dir
md5sum "$TESTDIR/file4.chk" | _filter_test_dir

C1="$(_md5_checksum "$TESTDIR/file1")"
C2="$(_md5_checksum "$TESTDIR/file2")"
C3="$(_md5_checksum "$TESTDIR/file3")"
C4="$(_md5_checksum "$TESTDIR/file4")"

test "${C1}" = "${C2}" || echo "file1 and file2 should match"
test "${C1}" = "${C3}" || echo "file1 and file3 should match"
test "${C1}" = "${C4}" || echo "file1 and file4 should match"
test "${C2}" = "${C3}" || echo "file2 and file3 should match"
test "${C2}" = "${C4}" || echo "file2 and file4 should match"
test "${C3}" = "${C4}" || echo "file3 and file4 should match"

echo "fpunch files"
"$XFS_IO_PROG" -f -c "fpunch 0 $BLKSZ" "$TESTDIR/file2"
"$XFS_IO_PROG" -f -c "fpunch $BLKSZ $BLKSZ" "$TESTDIR/file3"
"$XFS_IO_PROG" -f -c "fpunch $((BLKSZ * 2)) $BLKSZ" "$TESTDIR/file4"
_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 "$TESTDIR/file2.chk" | _filter_test_dir
md5sum "$TESTDIR/file3.chk" | _filter_test_dir
md5sum "$TESTDIR/file4.chk" | _filter_test_dir

C1="$(_md5_checksum "$TESTDIR/file1")"
C2="$(_md5_checksum "$TESTDIR/file2")"
C3="$(_md5_checksum "$TESTDIR/file3")"
C4="$(_md5_checksum "$TESTDIR/file4")"

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 "${C2}" != "${C3}" || echo "file2 and file3 should not match"
test "${C2}" != "${C4}" || echo "file2 and file4 should not match"
test "${C3}" != "${C4}" || echo "file3 and file4 should not match"

echo "Compare against check files"
cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || echo "file2 and file2.chk do not match"
cmp -s "$TESTDIR/file3" "$TESTDIR/file3.chk" || echo "file3 and file3.chk do not match"
cmp -s "$TESTDIR/file4" "$TESTDIR/file4.chk" || echo "file4 and file4.chk do not match"

# success, all done
status=0
exit