4 # Ensure that reflinking a file N times and DIO CoWing the copies leaves the
6 # - Create a file and record its hash
7 # - Create some reflink copies
8 # - Rewrite all the reflink copies w/ directio
9 # - Compare the contents of the original file
11 #-----------------------------------------------------------------------
12 # Copyright (c) 2015, Oracle and/or its affiliates. All Rights Reserved.
14 # This program is free software; you can redistribute it and/or
15 # modify it under the terms of the GNU General Public License as
16 # published by the Free Software Foundation.
18 # This program is distributed in the hope that it would be useful,
19 # but WITHOUT ANY WARRANTY; without even the implied warranty of
20 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 # GNU General Public License for more details.
23 # You should have received a copy of the GNU General Public License
24 # along with this program; if not, write the Free Software Foundation,
25 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
26 #-----------------------------------------------------------------------
29 seqres=$RESULT_DIR/$seq
30 echo "QA output created by $seq"
34 status=1 # failure is the default!
35 trap "_cleanup; exit \$status" 0 1 2 3 15
40 rm -rf $tmp.* $testdir
43 # get standard environment, filters and checks
48 # real QA test starts here
56 testdir=$TEST_DIR/test-$seq
60 echo "Create the original file blocks"
63 filesize=$((blksz * nr))
64 _pwrite_byte 0x61 0 $((blksz * 256)) $testdir/file1 >> $seqres.full
67 md5sum $testdir/file1 | _filter_test_dir
68 csum=$(_md5_checksum $testdir/file1)
70 echo "Create the reflink copies"
71 seq 2 $nr | while read i; do
72 _cp_reflink $testdir/file1 $testdir/file$i
76 echo "Rewrite the copies"
77 seq 2 $nr | while read i; do
78 _pwrite_byte 0x62 0 $((blksz * 256)) $testdir/file$i -d >> $seqres.full
82 echo "Examine original file"
83 md5sum $testdir/file1 | _filter_test_dir
84 md5sum $testdir/file2 | _filter_test_dir
86 mod_csum=$(_md5_checksum $testdir/file2)
87 new_csum=$(_md5_checksum $testdir/file1)
88 test ${csum} != ${mod_csum} || echo "checksums do not match"
89 test ${csum} = ${new_csum} || echo "checksums do not match"