4 # See what happens if we dirty a lot of pages via CoW and immediately
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10 # This program is free software; you can redistribute it and/or
11 # modify it under the terms of the GNU General Public License as
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15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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22 #-----------------------------------------------------------------------
25 seqres=$RESULT_DIR/$seq
26 echo "QA output created by $seq"
30 status=1 # failure is the default!
31 trap "_cleanup; exit \$status" 0 1 2 3 15
36 rm -rf $tmp.* $testdir
39 # get standard environment, filters and checks
44 # real QA test starts here
46 _require_scratch_reflink
47 _require_xfs_io_command "falloc"
51 echo "Format and mount"
52 _scratch_mkfs > $seqres.full 2>&1
53 _scratch_mount >> $seqres.full 2>&1
55 testdir=$SCRATCH_MNT/test-$seq
58 echo "Create the original files"
61 filesize=$((blksz * nr))
62 _pwrite_byte 0x61 0 $filesize $testdir/file1 >> $seqres.full
63 _pwrite_byte 0x62 0 $filesize $testdir/file3 >> $seqres.full
64 _pwrite_byte 0x62 0 $filesize $testdir/file3.chk >> $seqres.full
65 seq 0 2 $((nr-1)) | while read f; do
66 _reflink_range $testdir/file1 $((blksz * f)) $testdir/file3 $((blksz * f)) $blksz >> $seqres.full
67 _pwrite_byte 0x61 $((blksz * f)) $blksz $testdir/file3.chk >> $seqres.full
72 md5sum $testdir/file1 | _filter_scratch
73 md5sum $testdir/file3 | _filter_scratch
74 md5sum $testdir/file3.chk | _filter_scratch
76 echo "CoW and unmount"
77 cowoff=$((filesize / 4))
78 cowsz=$((filesize / 2))
79 $XFS_IO_PROG -f -c "pwrite -S 0x63 -b $cowsz $cowoff $cowsz" $testdir/file3 >> $seqres.full