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11a82d14 | 1 | #!/usr/bin/env bash |
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2 | # |
3 | # Commit changes into backing chains and empty the top image if the | |
4 | # backing image is not explicitly specified. | |
5 | # | |
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6 | # Variant of 097, which includes snapshots and persistent bitmaps, to |
7 | # tickle the slow codepath in qcow2. See also 198, for another feature | |
8 | # that tickles the slow codepath. | |
07ff948b | 9 | # |
4096974e | 10 | # Copyright (C) 2014, 2017 Red Hat, Inc. |
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11 | # |
12 | # This program is free software; you can redistribute it and/or modify | |
13 | # it under the terms of the GNU General Public License as published by | |
14 | # the Free Software Foundation; either version 2 of the License, or | |
15 | # (at your option) any later version. | |
16 | # | |
17 | # This program is distributed in the hope that it will be useful, | |
18 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | # GNU General Public License for more details. | |
21 | # | |
22 | # You should have received a copy of the GNU General Public License | |
23 | # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
24 | # | |
25 | ||
26 | # creator | |
27 | owner=mreitz@redhat.com | |
28 | ||
29 | seq="$(basename $0)" | |
30 | echo "QA output created by $seq" | |
31 | ||
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32 | status=1 # failure is the default! |
33 | ||
34 | _cleanup() | |
35 | { | |
36 | _cleanup_test_img | |
37 | _rm_test_img "$TEST_IMG.itmd" | |
38 | } | |
39 | trap "_cleanup; exit \$status" 0 1 2 3 15 | |
40 | ||
41 | # get standard environment, filters and checks | |
42 | . ./common.rc | |
43 | . ./common.filter | |
44 | . ./common.pattern | |
45 | ||
4096974e | 46 | # This test is specific to qcow2 |
07ff948b | 47 | _supported_fmt qcow2 |
57284d2a | 48 | _supported_proto file fuse |
07ff948b | 49 | _supported_os Linux |
3be2024a HR |
50 | # Persistent dirty bitmaps require compat=1.1; |
51 | # Internal snapshots forbid using an external data file | |
52 | # (they work with refcount_bits=1 here, though, because there actually | |
53 | # is no data when creating the snapshot) | |
54 | _unsupported_imgopts 'compat=0.10' data_file | |
07ff948b | 55 | |
8cedcffd | 56 | run_qemu() |
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57 | { |
58 | $QEMU -nographic -qmp stdio -serial none "$@" 2>&1 \ | |
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59 | | _filter_testdir | _filter_qmp | _filter_qemu \ |
60 | | sed 's/"sha256": ".\{64\}"/"sha256": HASH/' | |
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61 | } |
62 | ||
63 | for reason in snapshot bitmap; do | |
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64 | |
65 | # Four passes: | |
66 | # 0: Two-layer backing chain, commit to upper backing file (implicitly) | |
67 | # (in this case, the top image will be emptied) | |
68 | # 1: Two-layer backing chain, commit to upper backing file (explicitly) | |
69 | # (in this case, the top image will implicitly stay unchanged) | |
70 | # 2: Two-layer backing chain, commit to upper backing file (implicitly with -d) | |
71 | # (in this case, the top image will explicitly stay unchanged) | |
72 | # 3: Two-layer backing chain, commit to lower backing file | |
73 | # (in this case, the top image will implicitly stay unchanged) | |
74 | # | |
75 | # 020 already tests committing, so this only tests whether image chains are | |
76 | # working properly and that all images above the base are emptied; therefore, | |
77 | # no complicated patterns are necessary. Check near the 2G mark, as qcow2 | |
78 | # has been buggy at that boundary in the past. | |
79 | for i in 0 1 2 3; do | |
80 | ||
81 | echo | |
4096974e | 82 | echo "=== Test pass $reason.$i ===" |
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83 | echo |
84 | ||
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85 | len=$((2100 * 1024 * 1024 + 512)) # larger than 2G, and not cluster aligned |
86 | TEST_IMG="$TEST_IMG.base" _make_test_img $len | |
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87 | TEST_IMG="$TEST_IMG.itmd" _make_test_img -b "$TEST_IMG.base" -F $IMGFMT $len |
88 | _make_test_img -b "$TEST_IMG.itmd" -F $IMGFMT $len | |
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89 | # Update the top image to use a feature that is incompatible with fast path |
90 | case $reason in | |
91 | snapshot) $QEMU_IMG snapshot -c snap "$TEST_IMG" ;; | |
92 | bitmap) | |
93 | run_qemu <<EOF | |
94 | { "execute": "qmp_capabilities" } | |
95 | { "execute": "blockdev-add", | |
96 | "arguments": { "driver": "qcow2", "node-name": "drive0", | |
97 | "file": { "driver": "file", "filename": "$TEST_IMG" } } } | |
98 | { "execute": "block-dirty-bitmap-add", | |
99 | "arguments": { "node": "drive0", "name": "bitmap0", | |
3e99da5e | 100 | "persistent": true } } |
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101 | { "execute": "quit" } |
102 | EOF | |
103 | ;; | |
104 | esac | |
07ff948b | 105 | |
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106 | $QEMU_IO -c "write -P 1 0x7ffd0000 192k" "$TEST_IMG.base" | _filter_qemu_io |
107 | $QEMU_IO -c "write -P 2 0x7ffe0000 128k" "$TEST_IMG.itmd" | _filter_qemu_io | |
108 | $QEMU_IO -c "write -P 3 0x7fff0000 64k" "$TEST_IMG" | _filter_qemu_io | |
109 | $QEMU_IO -c "write -P 4 $(($len - 512)) 512" "$TEST_IMG" | _filter_qemu_io | |
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110 | |
111 | if [ $i -lt 3 ]; then | |
112 | if [ $i == 0 ]; then | |
113 | # -b "$TEST_IMG.itmd" should be the default (that is, committing to the | |
114 | # first backing file in the chain) | |
115 | $QEMU_IMG commit "$TEST_IMG" | |
116 | elif [ $i == 1 ]; then | |
117 | # explicitly specify the commit target (this should imply -d) | |
118 | $QEMU_IMG commit -b "$TEST_IMG.itmd" "$TEST_IMG" | |
119 | else | |
120 | # do not explicitly specify the commit target, but use -d to leave the | |
121 | # top image unchanged | |
122 | $QEMU_IMG commit -d "$TEST_IMG" | |
123 | fi | |
124 | ||
125 | # Bottom should be unchanged | |
126 | $QEMU_IO -c 'read -P 1 0x7ffd0000 192k' "$TEST_IMG.base" | _filter_qemu_io | |
f82c5b17 | 127 | $QEMU_IO -c "read -P 0 $((len - 512)) 512" "$TEST_IMG.base" | _filter_qemu_io |
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128 | |
129 | # Intermediate should contain changes from top | |
130 | $QEMU_IO -c 'read -P 1 0x7ffd0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io | |
131 | $QEMU_IO -c 'read -P 2 0x7ffe0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io | |
132 | $QEMU_IO -c 'read -P 3 0x7fff0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io | |
f82c5b17 | 133 | $QEMU_IO -c "read -P 4 $((len - 512)) 512" "$TEST_IMG.itmd" | _filter_qemu_io |
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134 | |
135 | # And in pass 0, the top image should be empty, whereas in both other passes | |
136 | # it should be unchanged (which is both checked by qemu-img map) | |
137 | else | |
138 | $QEMU_IMG commit -b "$TEST_IMG.base" "$TEST_IMG" | |
139 | ||
140 | # Bottom should contain all changes | |
141 | $QEMU_IO -c 'read -P 1 0x7ffd0000 64k' "$TEST_IMG.base" | _filter_qemu_io | |
142 | $QEMU_IO -c 'read -P 2 0x7ffe0000 64k' "$TEST_IMG.base" | _filter_qemu_io | |
143 | $QEMU_IO -c 'read -P 3 0x7fff0000 64k' "$TEST_IMG.base" | _filter_qemu_io | |
f82c5b17 | 144 | $QEMU_IO -c "read -P 4 $((len - 512)) 512" "$TEST_IMG.base" | _filter_qemu_io |
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145 | |
146 | # Both top and intermediate should be unchanged | |
147 | fi | |
148 | ||
149 | $QEMU_IMG map "$TEST_IMG.base" | _filter_qemu_img_map | |
150 | $QEMU_IMG map "$TEST_IMG.itmd" | _filter_qemu_img_map | |
151 | $QEMU_IMG map "$TEST_IMG" | _filter_qemu_img_map | |
152 | ||
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153 | # Check that the reason for slow path is still present, as appropriate |
154 | case $reason in | |
155 | snapshot) | |
156 | $QEMU_IMG snapshot -l "$TEST_IMG" | | |
157 | sed 's/^\(.\{20\}\).*/\1/; s/ *$//' ;; | |
158 | bitmap) | |
159 | run_qemu <<EOF | |
160 | { "execute": "qmp_capabilities" } | |
161 | { "execute": "blockdev-add", | |
162 | "arguments": { "driver": "qcow2", "node-name": "drive0", | |
163 | "file": { "driver": "file", "filename": "$TEST_IMG" } } } | |
164 | { "execute": "x-debug-block-dirty-bitmap-sha256", | |
165 | "arguments": { "node": "drive0", "name": "bitmap0" } } | |
166 | { "execute": "quit" } | |
167 | EOF | |
168 | ;; | |
169 | esac | |
07ff948b | 170 | |
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171 | done |
172 | done | |
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173 | |
174 | # success, all done | |
175 | echo "*** done" | |
176 | rm -f $seq.full | |
177 | status=0 |