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1 | #!/bin/bash |
2 | # | |
3 | # Test COW from backing files | |
4 | # | |
5 | # Copyright (C) 2012 Red Hat, Inc. | |
6 | # | |
7 | # This program is free software; you can redistribute it and/or modify | |
8 | # it under the terms of the GNU General Public License as published by | |
9 | # the Free Software Foundation; either version 2 of the License, or | |
10 | # (at your option) any later version. | |
11 | # | |
12 | # This program is distributed in the hope that it will be useful, | |
13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | # GNU General Public License for more details. | |
16 | # | |
17 | # You should have received a copy of the GNU General Public License | |
18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | # | |
20 | ||
21 | # creator | |
22 | [email protected] | |
23 | ||
24 | seq=`basename $0` | |
25 | echo "QA output created by $seq" | |
26 | ||
27 | here=`pwd` | |
28 | tmp=/tmp/$$ | |
29 | status=1 # failure is the default! | |
30 | ||
31 | _cleanup() | |
32 | { | |
33 | _cleanup_test_img | |
34 | } | |
35 | trap "_cleanup; exit \$status" 0 1 2 3 15 | |
36 | ||
37 | # get standard environment, filters and checks | |
38 | . ./common.rc | |
39 | . ./common.filter | |
40 | ||
41 | _supported_fmt qcow qcow2 vmdk qed | |
42 | _supported_proto generic | |
43 | _supported_os Linux | |
44 | ||
45 | CLUSTER_SIZE=4k | |
46 | size=128M | |
47 | ||
48 | echo | |
49 | echo "== creating backing file for COW tests ==" | |
50 | ||
51 | _make_test_img $size | |
52 | ||
53 | function backing_io() | |
54 | { | |
55 | local offset=$1 | |
56 | local sectors=$2 | |
57 | local op=$3 | |
58 | local pattern=0 | |
59 | local cur_sec=0 | |
60 | ||
61 | for i in $(seq 0 $((sectors - 1))); do | |
62 | cur_sec=$((offset / 512 + i)) | |
63 | pattern=$(( ( (cur_sec % 256) + (cur_sec / 256)) % 256 )) | |
64 | ||
65 | echo "$op -P $pattern $((cur_sec * 512)) 512" | |
66 | done | |
67 | } | |
68 | ||
69 | backing_io 0 256 write | $QEMU_IO $TEST_IMG | _filter_qemu_io | |
70 | ||
71 | mv $TEST_IMG $TEST_IMG.base | |
72 | ||
73 | _make_test_img -b $TEST_IMG.base 6G | |
74 | ||
75 | echo | |
76 | echo "== COW in a single cluster ==" | |
77 | $QEMU_IO -c "write -P 0x77 0 2k" $TEST_IMG | _filter_qemu_io | |
78 | $QEMU_IO -c "write -P 0x88 6k 2k" $TEST_IMG | _filter_qemu_io | |
79 | $QEMU_IO -c "write -P 0x99 9k 2k" $TEST_IMG | _filter_qemu_io | |
80 | ||
81 | $QEMU_IO -c "read -P 0x77 0 2k" $TEST_IMG | _filter_qemu_io | |
82 | backing_io $((2 * 1024)) 8 read | $QEMU_IO $TEST_IMG | _filter_qemu_io | |
83 | $QEMU_IO -c "read -P 0x88 6k 2k" $TEST_IMG | _filter_qemu_io | |
84 | backing_io $((8 * 1024)) 2 read | $QEMU_IO $TEST_IMG | _filter_qemu_io | |
85 | $QEMU_IO -c "read -P 0x99 9k 2k" $TEST_IMG | _filter_qemu_io | |
86 | backing_io $((11 * 1024)) 2 read | $QEMU_IO $TEST_IMG | _filter_qemu_io | |
87 | ||
88 | echo | |
89 | echo "== COW in two-cluster allocations ==" | |
90 | $QEMU_IO -c "write -P 0x77 16k 6k" $TEST_IMG | _filter_qemu_io | |
91 | $QEMU_IO -c "write -P 0x88 26k 6k" $TEST_IMG | _filter_qemu_io | |
92 | $QEMU_IO -c "write -P 0x99 33k 5k" $TEST_IMG | _filter_qemu_io | |
93 | ||
94 | $QEMU_IO -c "read -P 0x77 16k 6k" $TEST_IMG | _filter_qemu_io | |
95 | backing_io $((22 * 1024)) 8 read | $QEMU_IO $TEST_IMG | _filter_qemu_io | |
96 | $QEMU_IO -c "read -P 0x88 26k 6k" $TEST_IMG | _filter_qemu_io | |
97 | backing_io $((32 * 1024)) 2 read | $QEMU_IO $TEST_IMG | _filter_qemu_io | |
98 | $QEMU_IO -c "read -P 0x99 33k 5k" $TEST_IMG | _filter_qemu_io | |
99 | backing_io $((38 * 1024)) 4 read | $QEMU_IO $TEST_IMG | _filter_qemu_io | |
100 | ||
101 | echo | |
102 | echo "== COW in multi-cluster allocations ==" | |
103 | $QEMU_IO -c "write -P 0x77 48k 15k" $TEST_IMG | _filter_qemu_io | |
104 | $QEMU_IO -c "write -P 0x88 66k 14k" $TEST_IMG | _filter_qemu_io | |
105 | $QEMU_IO -c "write -P 0x99 83k 15k" $TEST_IMG | _filter_qemu_io | |
106 | ||
107 | $QEMU_IO -c "read -P 0x77 48k 15k" $TEST_IMG | _filter_qemu_io | |
108 | backing_io $((63 * 1024)) 6 read | $QEMU_IO $TEST_IMG | _filter_qemu_io | |
109 | $QEMU_IO -c "read -P 0x88 66k 14k" $TEST_IMG | _filter_qemu_io | |
110 | backing_io $((80 * 1024)) 6 read | $QEMU_IO $TEST_IMG | _filter_qemu_io | |
111 | $QEMU_IO -c "read -P 0x99 83k 15k" $TEST_IMG | _filter_qemu_io | |
112 | backing_io $((98 * 1024)) 4 read | $QEMU_IO $TEST_IMG | _filter_qemu_io | |
113 | ||
114 | _check_test_img | |
115 | ||
116 | # success, all done | |
117 | echo "*** done" | |
118 | rm -f $seq.full | |
119 | status=0 |