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https://github.com/linux-apfs/apfstests.git
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Darrick J. Wong
8ceac6e2f7
Test CoW operations when blocksize < pagesize and the only reflink block is in the middle of the page. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
104 lines
3.4 KiB
Bash
Executable File
104 lines
3.4 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test No. 217
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#
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# See what happens if we DIO CoW blocks 2-4 of a page's worth of blocks when
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# the second block is a unwritten block.
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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_xfs_io_command "falloc"
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rm -f "$seqres.full"
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PAGESZ=$(getconf PAGE_SIZE)
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BLKSZ=$((PAGESZ / 4))
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echo "Format and mount"
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_scratch_mkfs_blocksized $BLKSZ > "$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 $TESTDIR
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REAL_BLKSZ=$(stat -f -c '%S' $TESTDIR)
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test "$REAL_BLKSZ" != "$BLKSZ" && _notrun "Failed to format with small blocksize."
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echo "Create the original files"
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_pwrite_byte 0x61 0 $PAGESZ "$TESTDIR/file1" >> "$seqres.full"
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"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2" >> "$seqres.full"
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"$XFS_IO_PROG" -f -c "truncate $PAGESZ" "$TESTDIR/file2.chk" >> "$seqres.full"
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"$XFS_IO_PROG" -f -c "falloc -k $BLKSZ $BLKSZ" "$TESTDIR/file2" >> "$seqres.full"
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_pwrite_byte 0x00 $BLKSZ $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
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"$XFS_IO_PROG" -f -c "falloc -k $((BLKSZ * 3)) $BLKSZ" "$TESTDIR/file2" >> "$seqres.full"
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_pwrite_byte 0x00 $((BLKSZ * 3)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
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_reflink_range "$TESTDIR/file1" $BLKSZ "$TESTDIR/file2" $((BLKSZ * 2)) $BLKSZ >> "$seqres.full"
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_pwrite_byte 0x61 $((BLKSZ * 2)) $BLKSZ "$TESTDIR/file2.chk" >> "$seqres.full"
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_scratch_remount
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echo "Compare files"
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! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
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cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
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echo "CoW and unmount"
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"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$TESTDIR/file2" >> "$seqres.full"
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"$XFS_IO_PROG" -f -c "pwrite -S 0x63 $BLKSZ $((BLKSZ * 3))" "$TESTDIR/file2.chk" >> "$seqres.full"
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_scratch_remount
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echo "Compare files"
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! cmp -s "$TESTDIR/file1" "$TESTDIR/file2" || _fail "file1 and file2 don't match."
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cmp -s "$TESTDIR/file2" "$TESTDIR/file2.chk" || _fail "file2 and file2.chk don't match."
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echo "Check for damage"
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umount "$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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