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reflink: basic tests of the reflink and dedupe ioctls
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>
This commit is contained in:
Darrick J. Wong
committed by
Dave Chinner
Dave Chinner
parent
20d7bfad2d
commit
cc8e860cc9
Executable
+131
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#! /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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