]>
Commit | Line | Data |
---|---|---|
8268b767 SH |
1 | #!/bin/bash |
2 | # | |
3 | # Test that backing files can be smaller than the image | |
4 | # | |
5 | # Copyright (C) 2010 IBM, Corp. | |
6 | # | |
7 | # Based on 017: | |
8 | # Copyright (C) 2009 Red Hat, Inc. | |
9 | # | |
10 | # This program is free software; you can redistribute it and/or modify | |
11 | # it under the terms of the GNU General Public License as published by | |
12 | # the Free Software Foundation; either version 2 of the License, or | |
13 | # (at your option) any later version. | |
14 | # | |
15 | # This program is distributed in the hope that it will be useful, | |
16 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | # GNU General Public License for more details. | |
19 | # | |
20 | # You should have received a copy of the GNU General Public License | |
21 | # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
22 | # | |
23 | ||
24 | # creator | |
25 | owner=stefanha@linux.vnet.ibm.com | |
26 | ||
27 | seq=`basename $0` | |
28 | echo "QA output created by $seq" | |
29 | ||
30 | here=`pwd` | |
31 | tmp=/tmp/$$ | |
32 | status=1 # failure is the default! | |
33 | ||
34 | _cleanup() | |
35 | { | |
d40593dd KW |
36 | rm -f "${TEST_IMG}.copy" |
37 | _cleanup_test_img | |
8268b767 SH |
38 | } |
39 | trap "_cleanup; exit \$status" 0 1 2 3 15 | |
40 | ||
41 | # get standard environment, filters and checks | |
42 | . ./common.rc | |
43 | . ./common.filter | |
44 | . ./common.pattern | |
d40593dd | 45 | . ./common.qemu |
8268b767 SH |
46 | |
47 | # Any format supporting backing files except vmdk and qcow which do not support | |
48 | # smaller backing files. | |
f5a4bbd9 | 49 | _supported_fmt qcow2 qed |
1f7bf7d0 | 50 | _supported_proto file |
8268b767 SH |
51 | _supported_os Linux |
52 | ||
53 | # Choose a size that is not necessarily a cluster size multiple for image | |
54 | # formats that use clusters. This will ensure that the base image doesn't end | |
55 | # precisely on a cluster boundary (the easy case). | |
56 | image_size=$(( 4 * 1024 * 1024 * 1024 + 3 * 512 )) | |
57 | ||
58 | # The base image is smaller than the image file | |
59 | base_size=$(( image_size - 1024 * 1024 * 1024 )) | |
60 | ||
61 | offset=$(( base_size - 32 * 1024 )) | |
62 | ||
63 | _make_test_img $base_size | |
64 | ||
65 | echo "Filling base image" | |
66 | echo | |
67 | ||
68 | # Fill end of base image with a pattern, skipping every other sector | |
dd0c35d6 | 69 | io writev $offset 512 1024 32 |
8268b767 SH |
70 | |
71 | _check_test_img | |
72 | ||
73 | echo "Creating test image with backing file" | |
74 | echo | |
75 | ||
fef9c191 JC |
76 | mv "$TEST_IMG" "$TEST_IMG.base" |
77 | _make_test_img -b "$TEST_IMG.base" $image_size | |
8268b767 SH |
78 | |
79 | echo "Filling test image" | |
80 | echo | |
81 | ||
82 | # Write every other sector around where the base image ends | |
dd0c35d6 | 83 | io writev $(( offset + 512 )) 512 1024 64 |
8268b767 SH |
84 | |
85 | _check_test_img | |
86 | ||
87 | echo "Reading" | |
88 | echo | |
89 | ||
90 | # Base image sectors | |
dd0c35d6 | 91 | io readv $(( offset )) 512 1024 32 |
8268b767 SH |
92 | |
93 | # Image sectors | |
dd0c35d6 | 94 | io readv $(( offset + 512 )) 512 1024 64 |
8268b767 SH |
95 | |
96 | # Zero sectors beyond end of base image | |
dd0c35d6 | 97 | io_zero readv $(( offset + 32 * 1024 )) 512 1024 32 |
8268b767 SH |
98 | |
99 | _check_test_img | |
100 | ||
6ce2d77a | 101 | # Rebase it on top of its base image |
fef9c191 | 102 | $QEMU_IMG rebase -b "$TEST_IMG.base" "$TEST_IMG" |
6ce2d77a | 103 | |
d40593dd KW |
104 | echo |
105 | echo block-backup | |
106 | echo | |
107 | ||
108 | qemu_comm_method="monitor" | |
109 | _launch_qemu -drive file="${TEST_IMG}",cache=${CACHEMODE},id=disk | |
110 | h=$QEMU_HANDLE | |
111 | QEMU_COMM_TIMEOUT=1 | |
112 | ||
8283c5c3 SH |
113 | # Silence output since it contains the disk image path and QEMU's readline |
114 | # character echoing makes it very hard to filter the output | |
115 | _send_qemu_cmd $h "drive_backup disk ${TEST_IMG}.copy" "(qemu)" >/dev/null | |
6ffb4cb6 | 116 | _send_qemu_cmd $h "" "Formatting" | _filter_img_create |
d40593dd KW |
117 | qemu_cmd_repeat=20 _send_qemu_cmd $h "info block-jobs" "No active jobs" |
118 | _send_qemu_cmd $h 'quit' "" | |
119 | ||
120 | # Base image sectors | |
121 | TEST_IMG="${TEST_IMG}.copy" io readv $(( offset )) 512 1024 32 | |
122 | ||
123 | # Image sectors | |
124 | TEST_IMG="${TEST_IMG}.copy" io readv $(( offset + 512 )) 512 1024 64 | |
125 | ||
126 | # Zero sectors beyond end of base image | |
127 | TEST_IMG="${TEST_IMG}.copy" io_zero readv $(( offset + 32 * 1024 )) 512 1024 32 | |
128 | ||
129 | ||
6ce2d77a KW |
130 | _check_test_img |
131 | ||
8268b767 SH |
132 | # success, all done |
133 | echo "*** done" | |
134 | rm -f $seq.full | |
135 | status=0 |