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11a82d14 | 1 | #!/usr/bin/env bash |
0446919d KW |
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 $seq" | |
26 | ||
0446919d KW |
27 | status=1 # failure is the default! |
28 | ||
29 | _cleanup() | |
30 | { | |
31 | _cleanup_test_img | |
32 | } | |
33 | trap "_cleanup; exit \$status" 0 1 2 3 15 | |
34 | ||
35 | # get standard environment, filters and checks | |
36 | . ./common.rc | |
37 | . ./common.filter | |
38 | ||
39 | _supported_fmt qcow2 qed | |
1f7bf7d0 | 40 | _supported_proto file |
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41 | _supported_os Linux |
42 | ||
43 | CLUSTER_SIZE=2M | |
44 | size=128M | |
45 | ||
46 | echo | |
47 | echo "== creating backing file for COW tests ==" | |
48 | ||
1b935e1d FZ |
49 | TEST_IMG_SAVE="$TEST_IMG" |
50 | TEST_IMG="$TEST_IMG.base" | |
51 | ||
0446919d KW |
52 | _make_test_img $size |
53 | ||
8cedcffd | 54 | backing_io() |
0446919d KW |
55 | { |
56 | local offset=$1 | |
57 | local sectors=$2 | |
58 | local op=$3 | |
59 | local pattern=0 | |
60 | local cur_sec=0 | |
61 | ||
62 | for i in $(seq 0 $((sectors - 1))); do | |
63 | cur_sec=$((offset / 65536 + i)) | |
64 | pattern=$(( ( (cur_sec % 128) + (cur_sec / 128)) % 128 )) | |
65 | ||
66 | echo "$op -P $pattern $((cur_sec * 64))k 64k" | |
67 | done | |
68 | } | |
69 | ||
fef9c191 | 70 | backing_io 0 256 write | $QEMU_IO "$TEST_IMG" | _filter_qemu_io |
0446919d | 71 | |
1b935e1d | 72 | TEST_IMG="$TEST_IMG_SAVE" |
0446919d | 73 | |
fef9c191 | 74 | _make_test_img -b "$TEST_IMG.base" 6G |
0446919d KW |
75 | |
76 | echo | |
77 | echo "== Some concurrent requests touching the same cluster ==" | |
78 | ||
8cedcffd | 79 | overlay_io() |
0446919d KW |
80 | { |
81 | # Start with a request touching two clusters | |
82 | echo aio_write -P 0x80 2020k 80k | |
83 | ||
84 | # Then add some requests all over the place | |
85 | for i in $(seq 0 15; seq 17 31; seq 33 47); do | |
86 | echo aio_write -P $((0x81 + i)) $((i * 128))k 64k | |
87 | done | |
88 | ||
89 | # Then backwards overwriting part of them | |
90 | for i in $( (seq 0 15; seq 17 31; seq 33 47) | tac); do | |
91 | echo aio_write -P $((0x81 + i)) $((i * 128 + 32))k 64k | |
92 | done | |
93 | ||
94 | # And finally crossing the next cluster boundary | |
95 | echo aio_write -P 0x90 4080k 80k | |
96 | } | |
97 | ||
fef9c191 | 98 | overlay_io | $QEMU_IO "$TEST_IMG" | _filter_qemu_io |\ |
c21bddf2 HR |
99 | sed -e 's/bytes at offset [0-9]*/bytes at offset XXX/g' \ |
100 | -e 's/qemu-io> //g' | paste - - | sort | tr '\t' '\n' | |
0446919d KW |
101 | |
102 | echo | |
103 | echo "== Verify image content ==" | |
104 | ||
8cedcffd | 105 | verify_io() |
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106 | { |
107 | echo read -P 31 2016k 4k | |
108 | echo read -P 0x80 2020k 80k | |
109 | echo read -P 32 2100k 12k | |
110 | echo read -P 33 2112k 64k | |
111 | ||
112 | echo read -P 63 4064k 16k | |
113 | echo read -P 0x90 4080k 80k | |
114 | echo read -P 65 4160k 64k | |
115 | ||
116 | for i in $(seq 0 15; seq 17 31; seq 33 47); do | |
117 | echo read -P $((0x81 + i)) $((i * 128))k 96k | |
118 | done | |
119 | ||
120 | for i in $(seq 0 14; seq 16 30; seq 32 47); do | |
121 | local cur_sec=$(( i * 2 + 1 )) | |
122 | local pattern=$(( ( (cur_sec % 128) + (cur_sec / 128)) % 128 )) | |
123 | ||
124 | echo read -P $pattern $((i * 128 + 96))k 32k | |
125 | done | |
126 | } | |
127 | ||
fef9c191 | 128 | verify_io | $QEMU_IO "$TEST_IMG" | _filter_qemu_io |
0446919d KW |
129 | |
130 | _check_test_img | |
131 | ||
132 | # success, all done | |
133 | echo "*** done" | |
134 | rm -f $seq.full | |
135 | status=0 |