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11a82d14 | 1 | #!/usr/bin/env bash |
9dd003a9 | 2 | # group: rw auto backing |
07ff948b DB |
3 | # |
4 | # Commit changes into backing chains and empty the top image if the | |
5 | # backing image is not explicitly specified. | |
6 | # | |
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7 | # Variant of 097, which includes snapshots and persistent bitmaps, to |
8 | # tickle the slow codepath in qcow2. See also 198, for another feature | |
9 | # that tickles the slow codepath. | |
07ff948b | 10 | # |
4096974e | 11 | # Copyright (C) 2014, 2017 Red Hat, Inc. |
07ff948b DB |
12 | # |
13 | # This program is free software; you can redistribute it and/or modify | |
14 | # it under the terms of the GNU General Public License as published by | |
15 | # the Free Software Foundation; either version 2 of the License, or | |
16 | # (at your option) any later version. | |
17 | # | |
18 | # This program is distributed in the hope that it will 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. | |
22 | # | |
23 | # You should have received a copy of the GNU General Public License | |
24 | # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
25 | # | |
26 | ||
27 | # creator | |
28 | owner=mreitz@redhat.com | |
29 | ||
30 | seq="$(basename $0)" | |
31 | echo "QA output created by $seq" | |
32 | ||
07ff948b DB |
33 | status=1 # failure is the default! |
34 | ||
35 | _cleanup() | |
36 | { | |
37 | _cleanup_test_img | |
38 | _rm_test_img "$TEST_IMG.itmd" | |
39 | } | |
40 | trap "_cleanup; exit \$status" 0 1 2 3 15 | |
41 | ||
42 | # get standard environment, filters and checks | |
43 | . ./common.rc | |
44 | . ./common.filter | |
45 | . ./common.pattern | |
46 | ||
4096974e | 47 | # This test is specific to qcow2 |
07ff948b | 48 | _supported_fmt qcow2 |
57284d2a | 49 | _supported_proto file fuse |
07ff948b | 50 | _supported_os Linux |
3be2024a HR |
51 | # Persistent dirty bitmaps require compat=1.1; |
52 | # Internal snapshots forbid using an external data file | |
53 | # (they work with refcount_bits=1 here, though, because there actually | |
54 | # is no data when creating the snapshot) | |
55 | _unsupported_imgopts 'compat=0.10' data_file | |
07ff948b | 56 | |
8cedcffd | 57 | run_qemu() |
4096974e EB |
58 | { |
59 | $QEMU -nographic -qmp stdio -serial none "$@" 2>&1 \ | |
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60 | | _filter_testdir | _filter_qmp | _filter_qemu \ |
61 | | sed 's/"sha256": ".\{64\}"/"sha256": HASH/' | |
4096974e EB |
62 | } |
63 | ||
64 | for reason in snapshot bitmap; do | |
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65 | |
66 | # Four passes: | |
67 | # 0: Two-layer backing chain, commit to upper backing file (implicitly) | |
68 | # (in this case, the top image will be emptied) | |
69 | # 1: Two-layer backing chain, commit to upper backing file (explicitly) | |
70 | # (in this case, the top image will implicitly stay unchanged) | |
71 | # 2: Two-layer backing chain, commit to upper backing file (implicitly with -d) | |
72 | # (in this case, the top image will explicitly stay unchanged) | |
73 | # 3: Two-layer backing chain, commit to lower backing file | |
74 | # (in this case, the top image will implicitly stay unchanged) | |
75 | # | |
76 | # 020 already tests committing, so this only tests whether image chains are | |
77 | # working properly and that all images above the base are emptied; therefore, | |
78 | # no complicated patterns are necessary. Check near the 2G mark, as qcow2 | |
79 | # has been buggy at that boundary in the past. | |
80 | for i in 0 1 2 3; do | |
81 | ||
82 | echo | |
4096974e | 83 | echo "=== Test pass $reason.$i ===" |
07ff948b DB |
84 | echo |
85 | ||
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86 | len=$((2100 * 1024 * 1024 + 512)) # larger than 2G, and not cluster aligned |
87 | TEST_IMG="$TEST_IMG.base" _make_test_img $len | |
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88 | TEST_IMG="$TEST_IMG.itmd" _make_test_img -b "$TEST_IMG.base" -F $IMGFMT $len |
89 | _make_test_img -b "$TEST_IMG.itmd" -F $IMGFMT $len | |
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90 | # Update the top image to use a feature that is incompatible with fast path |
91 | case $reason in | |
92 | snapshot) $QEMU_IMG snapshot -c snap "$TEST_IMG" ;; | |
93 | bitmap) | |
94 | run_qemu <<EOF | |
95 | { "execute": "qmp_capabilities" } | |
96 | { "execute": "blockdev-add", | |
97 | "arguments": { "driver": "qcow2", "node-name": "drive0", | |
98 | "file": { "driver": "file", "filename": "$TEST_IMG" } } } | |
99 | { "execute": "block-dirty-bitmap-add", | |
100 | "arguments": { "node": "drive0", "name": "bitmap0", | |
3e99da5e | 101 | "persistent": true } } |
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102 | { "execute": "quit" } |
103 | EOF | |
104 | ;; | |
105 | esac | |
07ff948b | 106 | |
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107 | $QEMU_IO -c "write -P 1 0x7ffd0000 192k" "$TEST_IMG.base" | _filter_qemu_io |
108 | $QEMU_IO -c "write -P 2 0x7ffe0000 128k" "$TEST_IMG.itmd" | _filter_qemu_io | |
109 | $QEMU_IO -c "write -P 3 0x7fff0000 64k" "$TEST_IMG" | _filter_qemu_io | |
110 | $QEMU_IO -c "write -P 4 $(($len - 512)) 512" "$TEST_IMG" | _filter_qemu_io | |
07ff948b DB |
111 | |
112 | if [ $i -lt 3 ]; then | |
113 | if [ $i == 0 ]; then | |
114 | # -b "$TEST_IMG.itmd" should be the default (that is, committing to the | |
115 | # first backing file in the chain) | |
116 | $QEMU_IMG commit "$TEST_IMG" | |
117 | elif [ $i == 1 ]; then | |
118 | # explicitly specify the commit target (this should imply -d) | |
119 | $QEMU_IMG commit -b "$TEST_IMG.itmd" "$TEST_IMG" | |
120 | else | |
121 | # do not explicitly specify the commit target, but use -d to leave the | |
122 | # top image unchanged | |
123 | $QEMU_IMG commit -d "$TEST_IMG" | |
124 | fi | |
125 | ||
126 | # Bottom should be unchanged | |
127 | $QEMU_IO -c 'read -P 1 0x7ffd0000 192k' "$TEST_IMG.base" | _filter_qemu_io | |
f82c5b17 | 128 | $QEMU_IO -c "read -P 0 $((len - 512)) 512" "$TEST_IMG.base" | _filter_qemu_io |
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129 | |
130 | # Intermediate should contain changes from top | |
131 | $QEMU_IO -c 'read -P 1 0x7ffd0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io | |
132 | $QEMU_IO -c 'read -P 2 0x7ffe0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io | |
133 | $QEMU_IO -c 'read -P 3 0x7fff0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io | |
f82c5b17 | 134 | $QEMU_IO -c "read -P 4 $((len - 512)) 512" "$TEST_IMG.itmd" | _filter_qemu_io |
07ff948b DB |
135 | |
136 | # And in pass 0, the top image should be empty, whereas in both other passes | |
137 | # it should be unchanged (which is both checked by qemu-img map) | |
138 | else | |
139 | $QEMU_IMG commit -b "$TEST_IMG.base" "$TEST_IMG" | |
140 | ||
141 | # Bottom should contain all changes | |
142 | $QEMU_IO -c 'read -P 1 0x7ffd0000 64k' "$TEST_IMG.base" | _filter_qemu_io | |
143 | $QEMU_IO -c 'read -P 2 0x7ffe0000 64k' "$TEST_IMG.base" | _filter_qemu_io | |
144 | $QEMU_IO -c 'read -P 3 0x7fff0000 64k' "$TEST_IMG.base" | _filter_qemu_io | |
f82c5b17 | 145 | $QEMU_IO -c "read -P 4 $((len - 512)) 512" "$TEST_IMG.base" | _filter_qemu_io |
07ff948b DB |
146 | |
147 | # Both top and intermediate should be unchanged | |
148 | fi | |
149 | ||
150 | $QEMU_IMG map "$TEST_IMG.base" | _filter_qemu_img_map | |
151 | $QEMU_IMG map "$TEST_IMG.itmd" | _filter_qemu_img_map | |
152 | $QEMU_IMG map "$TEST_IMG" | _filter_qemu_img_map | |
153 | ||
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154 | # Check that the reason for slow path is still present, as appropriate |
155 | case $reason in | |
156 | snapshot) | |
157 | $QEMU_IMG snapshot -l "$TEST_IMG" | | |
158 | sed 's/^\(.\{20\}\).*/\1/; s/ *$//' ;; | |
159 | bitmap) | |
160 | run_qemu <<EOF | |
161 | { "execute": "qmp_capabilities" } | |
162 | { "execute": "blockdev-add", | |
163 | "arguments": { "driver": "qcow2", "node-name": "drive0", | |
164 | "file": { "driver": "file", "filename": "$TEST_IMG" } } } | |
165 | { "execute": "x-debug-block-dirty-bitmap-sha256", | |
166 | "arguments": { "node": "drive0", "name": "bitmap0" } } | |
167 | { "execute": "quit" } | |
168 | EOF | |
169 | ;; | |
170 | esac | |
07ff948b | 171 | |
4096974e EB |
172 | done |
173 | done | |
07ff948b DB |
174 | |
175 | # success, all done | |
176 | echo "*** done" | |
177 | rm -f $seq.full | |
178 | status=0 |