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1 | #!/bin/bash |
2 | # | |
3 | # Commit changes into backing chains and empty the top image if the | |
4 | # backing image is not explicitly specified | |
5 | # | |
6 | # Copyright (C) 2014 Red Hat, Inc. | |
7 | # | |
8 | # This program is free software; you can redistribute it and/or modify | |
9 | # it under the terms of the GNU General Public License as published by | |
10 | # the Free Software Foundation; either version 2 of the License, or | |
11 | # (at your option) any later version. | |
12 | # | |
13 | # This program is distributed in the hope that it will be useful, | |
14 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | # GNU General Public License for more details. | |
17 | # | |
18 | # You should have received a copy of the GNU General Public License | |
19 | # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
20 | # | |
21 | ||
22 | # creator | |
23 | owner=mreitz@redhat.com | |
24 | ||
25 | seq="$(basename $0)" | |
26 | echo "QA output created by $seq" | |
27 | ||
28 | here="$PWD" | |
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29 | status=1 # failure is the default! |
30 | ||
31 | _cleanup() | |
32 | { | |
33 | _cleanup_test_img | |
34 | _rm_test_img "$TEST_IMG.itmd" | |
35 | } | |
36 | trap "_cleanup; exit \$status" 0 1 2 3 15 | |
37 | ||
38 | # get standard environment, filters and checks | |
39 | . ./common.rc | |
40 | . ./common.filter | |
41 | . ./common.pattern | |
42 | ||
43 | # Any format supporting backing files and bdrv_make_empty | |
44 | _supported_fmt qcow qcow2 | |
45 | _supported_proto file | |
46 | _supported_os Linux | |
47 | ||
48 | ||
a3e1505d | 49 | # Four main passes: |
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50 | # 0: Two-layer backing chain, commit to upper backing file (implicitly) |
51 | # (in this case, the top image will be emptied) | |
52 | # 1: Two-layer backing chain, commit to upper backing file (explicitly) | |
53 | # (in this case, the top image will implicitly stay unchanged) | |
54 | # 2: Two-layer backing chain, commit to upper backing file (implicitly with -d) | |
55 | # (in this case, the top image will explicitly stay unchanged) | |
56 | # 3: Two-layer backing chain, commit to lower backing file | |
57 | # (in this case, the top image will implicitly stay unchanged) | |
58 | # | |
59 | # 020 already tests committing, so this only tests whether image chains are | |
60 | # working properly and that all images above the base are emptied; therefore, | |
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61 | # no complicated patterns are necessary. Check near the 2G mark, as qcow2 |
62 | # has been buggy at that boundary in the past. | |
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63 | for i in 0 1 2 3; do |
64 | ||
65 | echo | |
07ff948b | 66 | echo "=== Test pass $i ===" |
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67 | echo |
68 | ||
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69 | TEST_IMG="$TEST_IMG.base" _make_test_img 2100M |
70 | TEST_IMG="$TEST_IMG.itmd" _make_test_img -b "$TEST_IMG.base" 2100M | |
71 | _make_test_img -b "$TEST_IMG.itmd" 2100M | |
e6ea2312 | 72 | |
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73 | $QEMU_IO -c 'write -P 1 0x7ffd0000 192k' "$TEST_IMG.base" | _filter_qemu_io |
74 | $QEMU_IO -c 'write -P 2 0x7ffe0000 128k' "$TEST_IMG.itmd" | _filter_qemu_io | |
75 | $QEMU_IO -c 'write -P 3 0x7fff0000 64k' "$TEST_IMG" | _filter_qemu_io | |
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76 | |
77 | if [ $i -lt 3 ]; then | |
78 | if [ $i == 0 ]; then | |
79 | # -b "$TEST_IMG.itmd" should be the default (that is, committing to the | |
80 | # first backing file in the chain) | |
81 | $QEMU_IMG commit "$TEST_IMG" | |
82 | elif [ $i == 1 ]; then | |
83 | # explicitly specify the commit target (this should imply -d) | |
84 | $QEMU_IMG commit -b "$TEST_IMG.itmd" "$TEST_IMG" | |
85 | else | |
86 | # do not explicitly specify the commit target, but use -d to leave the | |
87 | # top image unchanged | |
88 | $QEMU_IMG commit -d "$TEST_IMG" | |
89 | fi | |
90 | ||
91 | # Bottom should be unchanged | |
a3e1505d | 92 | $QEMU_IO -c 'read -P 1 0x7ffd0000 192k' "$TEST_IMG.base" | _filter_qemu_io |
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93 | |
94 | # Intermediate should contain changes from top | |
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95 | $QEMU_IO -c 'read -P 1 0x7ffd0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io |
96 | $QEMU_IO -c 'read -P 2 0x7ffe0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io | |
97 | $QEMU_IO -c 'read -P 3 0x7fff0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io | |
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98 | |
99 | # And in pass 0, the top image should be empty, whereas in both other passes | |
100 | # it should be unchanged (which is both checked by qemu-img map) | |
101 | else | |
102 | $QEMU_IMG commit -b "$TEST_IMG.base" "$TEST_IMG" | |
103 | ||
104 | # Bottom should contain all changes | |
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105 | $QEMU_IO -c 'read -P 1 0x7ffd0000 64k' "$TEST_IMG.base" | _filter_qemu_io |
106 | $QEMU_IO -c 'read -P 2 0x7ffe0000 64k' "$TEST_IMG.base" | _filter_qemu_io | |
107 | $QEMU_IO -c 'read -P 3 0x7fff0000 64k' "$TEST_IMG.base" | _filter_qemu_io | |
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108 | |
109 | # Both top and intermediate should be unchanged | |
110 | fi | |
111 | ||
112 | $QEMU_IMG map "$TEST_IMG.base" | _filter_qemu_img_map | |
113 | $QEMU_IMG map "$TEST_IMG.itmd" | _filter_qemu_img_map | |
114 | $QEMU_IMG map "$TEST_IMG" | _filter_qemu_img_map | |
115 | ||
116 | done | |
117 | ||
118 | ||
119 | # success, all done | |
120 | echo "*** done" | |
121 | rm -f $seq.full | |
122 | status=0 |