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https://github.com/linux-apfs/apfstests.git
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Darrick J. Wong
cc8e860cc9
Test the operation of the btrfs (and now xfs) reflink and dedupe ioctls at various file offsets and with matching and nonmatching files. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Chinner <david@fromorbit.com>
132 lines
3.9 KiB
Bash
Executable File
132 lines
3.9 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test No. 137
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#
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# Ensure that we can reflink and dedupe blocks within the same file...
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# - Create a file with three distinct blocks ABB
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# - Reflink block zero to the multiple-of-three blocks
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# - Reflink block one to the multiple-of-five blocks
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# - Dedupe block two to the multiple-of-seven blocks
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# - Check that we successfully avoid deduping with holes, unwritten
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# extents, and non-matches; but actually dedupe real matches.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2015, Oracle and/or its affiliates. All Rights Reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#-----------------------------------------------------------------------
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seq=`basename "$0"`
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seqres="$RESULT_DIR/$seq"
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -rf "$tmp".* "$TESTDIR"
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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. ./common/reflink
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# real QA test starts here
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_supported_os Linux
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_require_test_reflink
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_require_test_dedupe
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_require_xfs_io_command "falloc"
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rm -f "$seqres.full"
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TESTDIR="$TEST_DIR/test-$seq"
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rm -rf "$TESTDIR"
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mkdir "$TESTDIR"
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echo "Create the original file blocks"
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BLKSZ=65536
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_pwrite_byte 0x61 0 $BLKSZ "$TESTDIR/file1" >> "$seqres.full"
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_pwrite_byte 0x62 $BLKSZ $((BLKSZ * 2)) "$TESTDIR/file1" >> "$seqres.full"
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NR_BLKS=1024
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echo "fallocate half the file"
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"$XFS_IO_PROG" -f -c "falloc $((NR_BLKS * BLKSZ / 2)) $((NR_BLKS * BLKSZ / 2))" "$TESTDIR/file1" >> "$seqres.full"
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echo "Reflink block zero to the threes"
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seq 1 $((NR_BLKS / 3)) | while read nr; do
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_reflink_range "$TESTDIR/file1" 0 "$TESTDIR/file1" $((nr * 3 * BLKSZ)) \
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$BLKSZ >> "$seqres.full"
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done
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echo "Reflink block one to the fives"
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seq 1 $((NR_BLKS / 5)) | while read nr; do
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_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file1" \
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$((nr * 5 * BLKSZ)) $BLKSZ >> "$seqres.full"
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done
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echo "Dedupe block two to the sevens"
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seq 1 $((NR_BLKS / 7)) | while read nr; do
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_dedupe_range "$TESTDIR/file1" $((BLKSZ * 2)) "$TESTDIR/file1" \
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$((nr * 7 * BLKSZ)) $BLKSZ >> "$seqres.full"
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done
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_test_remount
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echo "Check block mappings"
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md5sum "$TESTDIR/file1" | _filter_test_dir
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crcZ=$(_md5_range_checksum /dev/zero 0 $BLKSZ)
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crc0=$(_md5_range_checksum "$TESTDIR/file1" 0 $BLKSZ)
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crc1=$(_md5_range_checksum "$TESTDIR/file1" $BLKSZ $BLKSZ)
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crc2=$(_md5_range_checksum "$TESTDIR/file1" $((BLKSZ * 2)) $BLKSZ)
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check_block() {
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lblk="$1"
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rem7=$((lblk % 7))
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rem5=$((lblk % 5))
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rem3=$((lblk % 3))
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crc=$(_md5_range_checksum "$TESTDIR/file1" $((lblk * BLKSZ)) $BLKSZ)
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if [ $rem7 -eq 0 ]; then
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if [ $rem5 -eq 0 ]; then
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test $crc2 = $crc || echo "lblk $lblk doesn't match block 2"
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elif [ $rem3 -eq 0 ]; then
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test $crc0 = $crc || echo "lblk $lblk doesn't match block 0"
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elif [ $lblk -lt $((NR_BLKS / 2)) ]; then
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test $crcZ = $crc || echo "lblk $lblk isn't zeroed"
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fi
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elif [ $rem5 -eq 0 ]; then
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test $crc1 = $crc || echo "lblk $lblk doesn't match block 1"
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elif [ $rem3 -eq 0 ]; then
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test $crc0 = $crc || echo "lblk $lblk doesn't match block 0"
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elif [ $lblk -lt $((NR_BLKS / 2)) ]; then
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test $crcZ = $crc || echo "lblk $lblk isn't zeroed"
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fi
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}
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seq 3 $((NR_BLKS - 1)) | while read lblk; do
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err="$(check_block $lblk)"
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test -n "$err" && echo "$lblk: $err"
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done
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# success, all done
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status=0
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exit
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