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https://github.com/linux-apfs/apfstests.git
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Darrick J. Wong
2a885960ec
Test what happens when we send largeish buffers to CoW all at once. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
100 lines
2.9 KiB
Bash
Executable File
100 lines
2.9 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test No. 242
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#
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# Reflink two large files and CoW them in big chunks.
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#
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# This test is dependent on the system page size, so we cannot use md5 in
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# the golden output; we can only compare to a check file.
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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_scratch_reflink
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_require_cp_reflink
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rm -f "$seqres.full"
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echo "Format and mount"
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_scratch_mkfs > "$seqres.full" 2>&1
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_scratch_mount >> "$seqres.full" 2>&1
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TESTDIR="$SCRATCH_MNT/test-$seq"
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rm -rf $TESTDIR
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mkdir $TESTDIR
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BLKSZ=65536
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NR=6400
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BSZ=1280
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FREE_BLOCKS=$(stat -f -c '%a' "$TESTDIR")
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REAL_BLKSZ=$(stat -f -c '%S' "$TESTDIR")
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SPACE_NEEDED=$(((BLKSZ * NR * 3) * 5 / 4))
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SPACE_AVAIL=$((FREE_BLOCKS * REAL_BLKSZ))
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test $SPACE_NEEDED -gt $SPACE_AVAIL && _notrun "Not enough space. $SPACE_AVAIL < $SPACE_NEEDED"
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echo "Create the original files"
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"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((BLKSZ * BSZ)) 0 $((BLKSZ * NR))" "$TESTDIR/file1" >> "$seqres.full"
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_cp_reflink "$TESTDIR/file1" "$TESTDIR/file2" >> "$seqres.full"
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"$XFS_IO_PROG" -f -c "pwrite -S 0x61 -b $((BLKSZ * BSZ)) 0 $((BLKSZ * NR))" "$TESTDIR/file2.chk" >> "$seqres.full"
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_scratch_remount
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echo "Compare files"
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md5sum "$TESTDIR/file1" | _filter_scratch
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md5sum "$TESTDIR/file2" | _filter_scratch
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md5sum "$TESTDIR/file2.chk" | _filter_scratch
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echo "CoW and unmount"
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"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * BSZ)) 0 $((BLKSZ * NR))" "$TESTDIR/file2" >> "$seqres.full"
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"$XFS_IO_PROG" -f -c "pwrite -S 0x63 -b $((BLKSZ * BSZ)) 0 $((BLKSZ * NR))" "$TESTDIR/file2.chk" >> "$seqres.full"
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_scratch_remount
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echo "Compare files"
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md5sum "$TESTDIR/file1" | _filter_scratch
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md5sum "$TESTDIR/file2" | _filter_scratch
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md5sum "$TESTDIR/file2.chk" | _filter_scratch
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echo "Check for damage"
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umount "$SCRATCH_MNT"
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_check_scratch_fs
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# success, all done
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status=0
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exit
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