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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 |
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47 | _supported_fmt qcow2 |
48 | _supported_proto file | |
49 | _supported_os Linux | |
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50 | # Persistent dirty bitmaps require compat=1.1 |
51 | _unsupported_imgopts 'compat=0.10' | |
07ff948b | 52 | |
8cedcffd | 53 | run_qemu() |
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54 | { |
55 | $QEMU -nographic -qmp stdio -serial none "$@" 2>&1 \ | |
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56 | | _filter_testdir | _filter_qmp | _filter_qemu \ |
57 | | sed 's/"sha256": ".\{64\}"/"sha256": HASH/' | |
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58 | } |
59 | ||
60 | for reason in snapshot bitmap; do | |
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61 | |
62 | # Four passes: | |
63 | # 0: Two-layer backing chain, commit to upper backing file (implicitly) | |
64 | # (in this case, the top image will be emptied) | |
65 | # 1: Two-layer backing chain, commit to upper backing file (explicitly) | |
66 | # (in this case, the top image will implicitly stay unchanged) | |
67 | # 2: Two-layer backing chain, commit to upper backing file (implicitly with -d) | |
68 | # (in this case, the top image will explicitly stay unchanged) | |
69 | # 3: Two-layer backing chain, commit to lower backing file | |
70 | # (in this case, the top image will implicitly stay unchanged) | |
71 | # | |
72 | # 020 already tests committing, so this only tests whether image chains are | |
73 | # working properly and that all images above the base are emptied; therefore, | |
74 | # no complicated patterns are necessary. Check near the 2G mark, as qcow2 | |
75 | # has been buggy at that boundary in the past. | |
76 | for i in 0 1 2 3; do | |
77 | ||
78 | echo | |
4096974e | 79 | echo "=== Test pass $reason.$i ===" |
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80 | echo |
81 | ||
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82 | len=$((2100 * 1024 * 1024 + 512)) # larger than 2G, and not cluster aligned |
83 | TEST_IMG="$TEST_IMG.base" _make_test_img $len | |
84 | TEST_IMG="$TEST_IMG.itmd" _make_test_img -b "$TEST_IMG.base" $len | |
85 | _make_test_img -b "$TEST_IMG.itmd" $len | |
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86 | # Update the top image to use a feature that is incompatible with fast path |
87 | case $reason in | |
88 | snapshot) $QEMU_IMG snapshot -c snap "$TEST_IMG" ;; | |
89 | bitmap) | |
90 | run_qemu <<EOF | |
91 | { "execute": "qmp_capabilities" } | |
92 | { "execute": "blockdev-add", | |
93 | "arguments": { "driver": "qcow2", "node-name": "drive0", | |
94 | "file": { "driver": "file", "filename": "$TEST_IMG" } } } | |
95 | { "execute": "block-dirty-bitmap-add", | |
96 | "arguments": { "node": "drive0", "name": "bitmap0", | |
3e99da5e | 97 | "persistent": true } } |
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98 | { "execute": "quit" } |
99 | EOF | |
100 | ;; | |
101 | esac | |
07ff948b | 102 | |
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103 | $QEMU_IO -c "write -P 1 0x7ffd0000 192k" "$TEST_IMG.base" | _filter_qemu_io |
104 | $QEMU_IO -c "write -P 2 0x7ffe0000 128k" "$TEST_IMG.itmd" | _filter_qemu_io | |
105 | $QEMU_IO -c "write -P 3 0x7fff0000 64k" "$TEST_IMG" | _filter_qemu_io | |
106 | $QEMU_IO -c "write -P 4 $(($len - 512)) 512" "$TEST_IMG" | _filter_qemu_io | |
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107 | |
108 | if [ $i -lt 3 ]; then | |
109 | if [ $i == 0 ]; then | |
110 | # -b "$TEST_IMG.itmd" should be the default (that is, committing to the | |
111 | # first backing file in the chain) | |
112 | $QEMU_IMG commit "$TEST_IMG" | |
113 | elif [ $i == 1 ]; then | |
114 | # explicitly specify the commit target (this should imply -d) | |
115 | $QEMU_IMG commit -b "$TEST_IMG.itmd" "$TEST_IMG" | |
116 | else | |
117 | # do not explicitly specify the commit target, but use -d to leave the | |
118 | # top image unchanged | |
119 | $QEMU_IMG commit -d "$TEST_IMG" | |
120 | fi | |
121 | ||
122 | # Bottom should be unchanged | |
123 | $QEMU_IO -c 'read -P 1 0x7ffd0000 192k' "$TEST_IMG.base" | _filter_qemu_io | |
f82c5b17 | 124 | $QEMU_IO -c "read -P 0 $((len - 512)) 512" "$TEST_IMG.base" | _filter_qemu_io |
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125 | |
126 | # Intermediate should contain changes from top | |
127 | $QEMU_IO -c 'read -P 1 0x7ffd0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io | |
128 | $QEMU_IO -c 'read -P 2 0x7ffe0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io | |
129 | $QEMU_IO -c 'read -P 3 0x7fff0000 64k' "$TEST_IMG.itmd" | _filter_qemu_io | |
f82c5b17 | 130 | $QEMU_IO -c "read -P 4 $((len - 512)) 512" "$TEST_IMG.itmd" | _filter_qemu_io |
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131 | |
132 | # And in pass 0, the top image should be empty, whereas in both other passes | |
133 | # it should be unchanged (which is both checked by qemu-img map) | |
134 | else | |
135 | $QEMU_IMG commit -b "$TEST_IMG.base" "$TEST_IMG" | |
136 | ||
137 | # Bottom should contain all changes | |
138 | $QEMU_IO -c 'read -P 1 0x7ffd0000 64k' "$TEST_IMG.base" | _filter_qemu_io | |
139 | $QEMU_IO -c 'read -P 2 0x7ffe0000 64k' "$TEST_IMG.base" | _filter_qemu_io | |
140 | $QEMU_IO -c 'read -P 3 0x7fff0000 64k' "$TEST_IMG.base" | _filter_qemu_io | |
f82c5b17 | 141 | $QEMU_IO -c "read -P 4 $((len - 512)) 512" "$TEST_IMG.base" | _filter_qemu_io |
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142 | |
143 | # Both top and intermediate should be unchanged | |
144 | fi | |
145 | ||
146 | $QEMU_IMG map "$TEST_IMG.base" | _filter_qemu_img_map | |
147 | $QEMU_IMG map "$TEST_IMG.itmd" | _filter_qemu_img_map | |
148 | $QEMU_IMG map "$TEST_IMG" | _filter_qemu_img_map | |
149 | ||
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150 | # Check that the reason for slow path is still present, as appropriate |
151 | case $reason in | |
152 | snapshot) | |
153 | $QEMU_IMG snapshot -l "$TEST_IMG" | | |
154 | sed 's/^\(.\{20\}\).*/\1/; s/ *$//' ;; | |
155 | bitmap) | |
156 | run_qemu <<EOF | |
157 | { "execute": "qmp_capabilities" } | |
158 | { "execute": "blockdev-add", | |
159 | "arguments": { "driver": "qcow2", "node-name": "drive0", | |
160 | "file": { "driver": "file", "filename": "$TEST_IMG" } } } | |
161 | { "execute": "x-debug-block-dirty-bitmap-sha256", | |
162 | "arguments": { "node": "drive0", "name": "bitmap0" } } | |
163 | { "execute": "quit" } | |
164 | EOF | |
165 | ;; | |
166 | esac | |
07ff948b | 167 | |
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168 | done |
169 | done | |
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170 | |
171 | # success, all done | |
172 | echo "*** done" | |
173 | rm -f $seq.full | |
174 | status=0 |