2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2016, Oracle and/or its affiliates. All Rights Reserved.
7 # Ensuring that copy on write in directio mode to the source file when the
8 # CoW range covers delalloc blocks and regular shared blocks.
11 # - Truncate the first file.
12 # - Write the odd blocks of the first file.
13 # - Reflink the odd blocks of the first file into the second file.
14 # - Write the even blocks of the first file.
15 # - DIO CoW the first file across the halfway mark, starting with the
17 # - Check that the files are now different where we say they're different.
20 _begin_fstest auto quick clone
22 # Import common functions.
26 # real QA test starts here
27 _require_scratch_reflink
28 _require_xfs_io_command "falloc"
29 _require_xfs_io_command "cowextsize"
32 echo "Format and mount"
33 _scratch_mkfs > $seqres.full 2>&1
34 _scratch_mount >> $seqres.full 2>&1
36 testdir=$SCRATCH_MNT/test-$seq
39 echo "Create the original files"
42 filesize=$((blksz * nr))
43 $XFS_IO_PROG -c "cowextsize $((blksz * 16))" $testdir >> $seqres.full
44 _sweave_reflink_holes $blksz $nr $testdir/file1 $testdir/file3 >> $seqres.full
48 md5sum $testdir/file1 | _filter_scratch
49 md5sum $testdir/file3 | _filter_scratch
50 md5sum $testdir/file1.chk | _filter_scratch
52 echo "CoW across the transition"
53 cowoff=$((filesize / 4))
54 cowsz=$((filesize / 2))
55 _sweave_reflink_holes_delalloc $blksz $nr $testdir/file1 >> $seqres.full
56 $XFS_IO_PROG -d -f -c "pwrite -S 0x63 -b $cowsz $cowoff $cowsz" $testdir/file1 >> $seqres.full
57 _pwrite_byte 0x63 $cowoff $cowsz $testdir/file1.chk >> $seqres.full
61 md5sum $testdir/file1 | _filter_scratch
62 md5sum $testdir/file3 | _filter_scratch
63 md5sum $testdir/file1.chk | _filter_scratch