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0446919d KW |
1 | #!/bin/bash |
2 | # | |
3 | # Test COW from backing files with AIO | |
4 | # | |
5 | # Copyright (C) 2012 Red Hat, Inc. | |
6 | # | |
7 | # This program is free software; you can redistribute it and/or modify | |
8 | # it under the terms of the GNU General Public License as published by | |
9 | # the Free Software Foundation; either version 2 of the License, or | |
10 | # (at your option) any later version. | |
11 | # | |
12 | # This program is distributed in the hope that it will be useful, | |
13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | # GNU General Public License for more details. | |
16 | # | |
17 | # You should have received a copy of the GNU General Public License | |
18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | # | |
20 | ||
21 | # creator | |
22 | owner=kwolf@redhat.com | |
23 | ||
24 | seq=`basename $0` | |
25 | echo "QA output created by $seq" | |
26 | ||
27 | here=`pwd` | |
28 | tmp=/tmp/$$ | |
29 | status=1 # failure is the default! | |
30 | ||
31 | _cleanup() | |
32 | { | |
33 | _cleanup_test_img | |
34 | } | |
35 | trap "_cleanup; exit \$status" 0 1 2 3 15 | |
36 | ||
37 | # get standard environment, filters and checks | |
38 | . ./common.rc | |
39 | . ./common.filter | |
40 | ||
41 | _supported_fmt qcow2 qed | |
42 | _supported_proto generic | |
43 | _supported_os Linux | |
44 | ||
45 | CLUSTER_SIZE=2M | |
46 | size=128M | |
47 | ||
48 | echo | |
49 | echo "== creating backing file for COW tests ==" | |
50 | ||
51 | _make_test_img $size | |
52 | ||
53 | function backing_io() | |
54 | { | |
55 | local offset=$1 | |
56 | local sectors=$2 | |
57 | local op=$3 | |
58 | local pattern=0 | |
59 | local cur_sec=0 | |
60 | ||
61 | for i in $(seq 0 $((sectors - 1))); do | |
62 | cur_sec=$((offset / 65536 + i)) | |
63 | pattern=$(( ( (cur_sec % 128) + (cur_sec / 128)) % 128 )) | |
64 | ||
65 | echo "$op -P $pattern $((cur_sec * 64))k 64k" | |
66 | done | |
67 | } | |
68 | ||
69 | backing_io 0 256 write | $QEMU_IO $TEST_IMG | _filter_qemu_io | |
70 | ||
71 | mv $TEST_IMG $TEST_IMG.base | |
72 | ||
73 | _make_test_img -b $TEST_IMG.base 6G | |
74 | ||
75 | echo | |
76 | echo "== Some concurrent requests touching the same cluster ==" | |
77 | ||
78 | function overlay_io() | |
79 | { | |
80 | # Start with a request touching two clusters | |
81 | echo aio_write -P 0x80 2020k 80k | |
82 | ||
83 | # Then add some requests all over the place | |
84 | for i in $(seq 0 15; seq 17 31; seq 33 47); do | |
85 | echo aio_write -P $((0x81 + i)) $((i * 128))k 64k | |
86 | done | |
87 | ||
88 | # Then backwards overwriting part of them | |
89 | for i in $( (seq 0 15; seq 17 31; seq 33 47) | tac); do | |
90 | echo aio_write -P $((0x81 + i)) $((i * 128 + 32))k 64k | |
91 | done | |
92 | ||
93 | # And finally crossing the next cluster boundary | |
94 | echo aio_write -P 0x90 4080k 80k | |
95 | } | |
96 | ||
97 | overlay_io | $QEMU_IO $TEST_IMG | _filter_qemu_io |\ | |
98 | sed -e 's/bytes at offset [0-9]*/bytes at offset XXX/g' | |
99 | ||
100 | echo | |
101 | echo "== Verify image content ==" | |
102 | ||
103 | function verify_io() | |
104 | { | |
105 | echo read -P 31 2016k 4k | |
106 | echo read -P 0x80 2020k 80k | |
107 | echo read -P 32 2100k 12k | |
108 | echo read -P 33 2112k 64k | |
109 | ||
110 | echo read -P 63 4064k 16k | |
111 | echo read -P 0x90 4080k 80k | |
112 | echo read -P 65 4160k 64k | |
113 | ||
114 | for i in $(seq 0 15; seq 17 31; seq 33 47); do | |
115 | echo read -P $((0x81 + i)) $((i * 128))k 96k | |
116 | done | |
117 | ||
118 | for i in $(seq 0 14; seq 16 30; seq 32 47); do | |
119 | local cur_sec=$(( i * 2 + 1 )) | |
120 | local pattern=$(( ( (cur_sec % 128) + (cur_sec / 128)) % 128 )) | |
121 | ||
122 | echo read -P $pattern $((i * 128 + 96))k 32k | |
123 | done | |
124 | } | |
125 | ||
126 | verify_io | $QEMU_IO $TEST_IMG | _filter_qemu_io | |
127 | ||
128 | _check_test_img | |
129 | ||
130 | # success, all done | |
131 | echo "*** done" | |
132 | rm -f $seq.full | |
133 | status=0 |