1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
#!/bin/bash
#
# qcow2 error path testing
#
# Copyright (C) 2010 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# creator
owner=kwolf@redhat.com
seq=`basename $0`
echo "QA output created by $seq"
here=`pwd`
tmp=/tmp/$$
status=1 # failure is the default!
_cleanup()
{
_cleanup_test_img
rm "$TEST_DIR/blkdebug.conf"
}
trap "_cleanup; exit \$status" 0 1 2 3 15
# get standard environment, filters and checks
. ./common.rc
. ./common.filter
. ./common.pattern
# Currently only qcow2 supports rebasing
_supported_fmt qcow2
_supported_proto file
_supported_os Linux
_default_cache_mode "writethrough"
_supported_cache_modes "writethrough" "none"
# The refcount table tests expect a certain minimum width for refcount entries
# (so that the refcount table actually needs to grow); that minimum is 16 bits,
# being the default refcount entry width.
# 32 and 64 bits do not work either, however, due to different leaked cluster
# count on error.
# Thus, the only remaining option is refcount_bits=16.
_unsupported_imgopts 'refcount_bits=\([^1]\|.\([^6]\|$\)\)'
echo "Errors while writing 128 kB"
echo
CLUSTER_SIZE=1024
BLKDBG_TEST_IMG="blkdebug:$TEST_DIR/blkdebug.conf:$TEST_IMG"
for event in \
l1_update \
\
l2_load \
l2_update \
l2_alloc.write \
\
write_aio \
\
refblock_load \
refblock_update_part \
refblock_alloc \
\
cluster_alloc \
do
for errno in 5 28; do
for imm in off; do
for once in on off; do
for vmstate in "" "-b"; do
cat > "$TEST_DIR/blkdebug.conf" <<EOF
[inject-error]
event = "$event"
errno = "$errno"
immediately = "$imm"
once ="$once"
EOF
_make_test_img 1G
echo
echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate"
# We want to catch a simple L2 update, not the allocation of the first L2 table
if [ "$event" == "l2_update" ]; then
$QEMU_IO -c "write $vmstate 0 512" "$TEST_IMG" > /dev/null 2>&1
fi
$QEMU_IO -c "write $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io
# l2_load is not called on allocation, so issue a second write
# Reads are another path to trigger l2_load, so do a read, too
if [ "$event" == "l2_load" ]; then
$QEMU_IO -c "write $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io
$QEMU_IO -c "read $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io
fi
_check_test_img 2>&1 | grep -v "refcount=1 reference=0"
done
done
done
done
done
echo
echo === Refcout table growth tests ===
echo
CLUSTER_SIZE=512
for event in \
refblock_alloc.hookup \
refblock_alloc.write \
refblock_alloc.write_blocks \
refblock_alloc.write_table \
refblock_alloc.switch_table \
do
# This one takes a while, so let's test only one error code (ENOSPC should
# never be generated by qemu, so it's probably a good choice)
for errno in 28; do
for imm in off; do
for once in on off; do
for vmstate in "" "-b"; do
cat > "$TEST_DIR/blkdebug.conf" <<EOF
[inject-error]
event = "$event"
errno = "$errno"
immediately = "$imm"
once = "$once"
EOF
_make_test_img 1G
echo
echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate"
$QEMU_IO -c "write $vmstate 0 64M" "$BLKDBG_TEST_IMG" | _filter_qemu_io
_check_test_img 2>&1 | grep -v "refcount=1 reference=0"
done
done
done
done
done
echo
echo === L1 growth tests ===
echo
CLUSTER_SIZE=1024
for event in \
l1_grow.alloc_table \
l1_grow.write_table \
l1_grow.activate_table \
do
for errno in 5 28; do
for imm in off; do
for once in on off; do
cat > "$TEST_DIR/blkdebug.conf" <<EOF
[inject-error]
event = "$event"
errno = "$errno"
immediately = "$imm"
once = "$once"
EOF
_make_test_img 1G
echo
echo "Event: $event; errno: $errno; imm: $imm; once: $once"
$QEMU_IO -c "write -b 0 64k" "$BLKDBG_TEST_IMG" | _filter_qemu_io
_check_test_img 2>&1 | grep -v "refcount=1 reference=0"
done
done
done
done
# success, all done
echo "*** done"
rm -f $seq.full
status=0
|
