2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2015, Oracle and/or its affiliates. All Rights Reserved.
7 # See what happens if we CoW blocks 2-4 of a page's worth of blocks when the
8 # second block is a unwritten block.
10 # This test is dependent on the system page size, so we cannot use md5 in
11 # the golden output; we can only compare to a check file.
14 _begin_fstest auto quick clone
16 # Override the default cleanup function.
20 rm -rf $tmp.* $testdir
23 # Import common functions.
27 # real QA test starts here
28 _require_scratch_reflink
29 _require_xfs_io_command "falloc"
31 pagesz=$(getconf PAGE_SIZE)
34 echo "Format and mount"
35 _scratch_mkfs_blocksized $blksz > $seqres.full 2>&1
36 _scratch_mount >> $seqres.full 2>&1
38 testdir=$SCRATCH_MNT/test-$seq
41 real_blksz=$(_get_file_block_size $testdir)
42 test $real_blksz != $blksz && _notrun "Failed to format with small blocksize."
44 echo "Create the original files"
45 _pwrite_byte 0x61 0 $pagesz $testdir/file1 >> $seqres.full
47 $XFS_IO_PROG -f -c "truncate $pagesz" $testdir/file2 >> $seqres.full
48 $XFS_IO_PROG -f -c "truncate $pagesz" $testdir/file2.chk >> $seqres.full
50 $XFS_IO_PROG -f -c "falloc -k $blksz $blksz" $testdir/file2 >> $seqres.full
51 _pwrite_byte 0x00 $blksz $blksz $testdir/file2.chk >> $seqres.full
53 $XFS_IO_PROG -f -c "falloc -k $((blksz * 3)) $blksz" $testdir/file2 >> $seqres.full
54 _pwrite_byte 0x00 $((blksz * 3)) $blksz $testdir/file2.chk >> $seqres.full
56 _reflink_range $testdir/file1 $blksz $testdir/file2 $((blksz * 2)) $blksz >> $seqres.full
57 _pwrite_byte 0x61 $((blksz * 2)) $blksz $testdir/file2.chk >> $seqres.full
61 ! cmp -s $testdir/file1 $testdir/file2 || _fail "file1 and file2 don't match."
62 cmp -s $testdir/file2 $testdir/file2.chk || _fail "file2 and file2.chk don't match."
64 echo "CoW and unmount"
65 $XFS_IO_PROG -f -c "pwrite -S 0x63 $((blksz + 17)) $((blksz * 3 - 34))" $testdir/file2 >> $seqres.full
66 $XFS_IO_PROG -f -c "pwrite -S 0x63 $((blksz + 17)) $((blksz * 3 - 34))" $testdir/file2.chk >> $seqres.full
70 ! cmp -s $testdir/file1 $testdir/file2 || _fail "file1 and file2 don't match."
71 cmp -s $testdir/file2 $testdir/file2.chk || _fail "file2 and file2.chk don't match."