2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2015, Oracle and/or its affiliates. All Rights Reserved.
7 # Ensuring that copy on write in direct-io mode works when the CoW
8 # range originally covers multiple extents.
10 # - Reflink the odd blocks of the first file into a third file.
11 # - Reflink the even blocks of the second file into the third file.
12 # - directio CoW across the halfway mark.
13 # - Check that the files are now different where we say they're different.
16 seqres=$RESULT_DIR/$seq
17 echo "QA output created by $seq"
21 status=1 # failure is the default!
22 trap "_cleanup; exit \$status" 0 1 2 3 15
27 rm -rf $tmp.* $testdir
30 # get standard environment, filters and checks
35 # real QA test starts here
37 _require_scratch_reflink
42 echo "Format and mount"
43 _scratch_mkfs > $seqres.full 2>&1
44 _scratch_mount >> $seqres.full 2>&1
46 testdir=$SCRATCH_MNT/test-$seq
49 echo "Create the original files"
52 filesize=$((blksz * nr))
53 _pwrite_byte 0x61 0 $filesize $testdir/file1 >> $seqres.full
54 _pwrite_byte 0x62 0 $filesize $testdir/file2 >> $seqres.full
55 seq 0 2 $((nr-1)) | while read f; do
56 _reflink_range $testdir/file1 $((blksz * f)) $testdir/file3 $((blksz * f)) $blksz >> $seqres.full
57 _pwrite_byte 0x61 $((blksz * f)) $blksz $testdir/file3.chk >> $seqres.full
59 seq 1 2 $((nr-1)) | while read f; do
60 _reflink_range $testdir/file2 $((blksz * f)) $testdir/file3 $((blksz * f)) $blksz >> $seqres.full
61 _pwrite_byte 0x62 $((blksz * f)) $blksz $testdir/file3.chk >> $seqres.full
66 md5sum $testdir/file1 | _filter_scratch
67 md5sum $testdir/file2 | _filter_scratch
68 md5sum $testdir/file3 | _filter_scratch
69 md5sum $testdir/file3.chk | _filter_scratch
71 echo "directio CoW across the transition"
72 cowoff=$((filesize / 4))
73 cowsz=$((filesize / 2))
74 $XFS_IO_PROG -d -f -c "pwrite -S 0x63 -b $cowsz $cowoff $cowsz" $testdir/file3 >> $seqres.full
75 _pwrite_byte 0x63 $cowoff $cowsz $testdir/file3.chk >> $seqres.full
79 md5sum $testdir/file1 | _filter_scratch
80 md5sum $testdir/file2 | _filter_scratch
81 md5sum $testdir/file3 | _filter_scratch
82 md5sum $testdir/file3.chk | _filter_scratch