026 (5563B)
1 #!/usr/bin/env bash 2 # group: rw blkdbg 3 # 4 # qcow2 error path testing 5 # 6 # Copyright (C) 2010 Red Hat, Inc. 7 # 8 # This program is free software; you can redistribute it and/or modify 9 # it under the terms of the GNU General Public License as published by 10 # the Free Software Foundation; either version 2 of the License, or 11 # (at your option) any later version. 12 # 13 # This program is distributed in the hope that it will be useful, 14 # but WITHOUT ANY WARRANTY; without even the implied warranty of 15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 # GNU General Public License for more details. 17 # 18 # You should have received a copy of the GNU General Public License 19 # along with this program. If not, see <http://www.gnu.org/licenses/>. 20 # 21 22 # creator 23 owner=kwolf@redhat.com 24 25 seq=`basename $0` 26 echo "QA output created by $seq" 27 28 status=1 # failure is the default! 29 30 _cleanup() 31 { 32 _cleanup_test_img 33 rm "$TEST_DIR/blkdebug.conf" 34 rm -f "$TEST_IMG.data_file" 35 } 36 trap "_cleanup; exit \$status" 0 1 2 3 15 37 38 # get standard environment, filters and checks 39 . ./common.rc 40 . ./common.filter 41 . ./common.pattern 42 43 # Currently only qcow2 supports rebasing 44 _supported_fmt qcow2 45 _supported_proto file fuse 46 _default_cache_mode writethrough 47 _supported_cache_modes writethrough none 48 # The refcount table tests expect a certain minimum width for refcount entries 49 # (so that the refcount table actually needs to grow); that minimum is 16 bits, 50 # being the default refcount entry width. 51 # 32 and 64 bits do not work either, however, due to different leaked cluster 52 # count on error. 53 # Thus, the only remaining option is refcount_bits=16. 54 # 55 # As for data_file, none of the refcount tests can work for it. 56 _unsupported_imgopts 'refcount_bits=\([^1]\|.\([^6]\|$\)\)' \ 57 data_file 58 59 echo "Errors while writing 128 kB" 60 echo 61 62 CLUSTER_SIZE=1024 63 64 BLKDBG_TEST_IMG="blkdebug:$TEST_DIR/blkdebug.conf:$TEST_IMG" 65 66 for event in \ 67 l1_update \ 68 \ 69 l2_load \ 70 l2_update \ 71 l2_alloc_write \ 72 \ 73 write_aio \ 74 \ 75 refblock_load \ 76 refblock_update_part \ 77 refblock_alloc \ 78 \ 79 cluster_alloc \ 80 81 do 82 83 for errno in 5 28; do 84 for imm in off; do 85 for once in on off; do 86 for vmstate in "" "-b"; do 87 88 cat > "$TEST_DIR/blkdebug.conf" <<EOF 89 [inject-error] 90 event = "$event" 91 errno = "$errno" 92 immediately = "$imm" 93 once ="$once" 94 EOF 95 96 _make_test_img 1G 97 98 echo 99 echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate" 100 101 # We want to catch a simple L2 update, not the allocation of the first L2 table 102 if [ "$event" == "l2_update" ]; then 103 $QEMU_IO -c "write $vmstate 0 512" "$TEST_IMG" > /dev/null 2>&1 104 fi 105 106 $QEMU_IO -c "write $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io 107 108 # l2_load is not called on allocation, so issue a second write 109 # Reads are another path to trigger l2_load, so do a read, too 110 if [ "$event" == "l2_load" ]; then 111 $QEMU_IO -c "write $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io 112 $QEMU_IO -c "read $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io 113 fi 114 115 _check_test_img_ignore_leaks 2>&1 | grep -v "refcount=1 reference=0" 116 117 done 118 done 119 done 120 done 121 done 122 123 124 echo 125 echo === Refcount table growth tests === 126 echo 127 CLUSTER_SIZE=512 128 129 130 for event in \ 131 refblock_alloc_hookup \ 132 refblock_alloc_write \ 133 refblock_alloc_write_blocks \ 134 refblock_alloc_write_table \ 135 refblock_alloc_switch_table \ 136 137 do 138 139 # This one takes a while, so let's test only one error code (ENOSPC should 140 # never be generated by qemu, so it's probably a good choice) 141 for errno in 28; do 142 for imm in off; do 143 for once in on off; do 144 for vmstate in "" "-b"; do 145 146 cat > "$TEST_DIR/blkdebug.conf" <<EOF 147 [inject-error] 148 event = "$event" 149 errno = "$errno" 150 immediately = "$imm" 151 once = "$once" 152 EOF 153 154 _make_test_img 1G 155 156 echo 157 echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate" 158 $QEMU_IO -c "write $vmstate 0 64M" "$BLKDBG_TEST_IMG" | _filter_qemu_io 159 160 _check_test_img_ignore_leaks 2>&1 | grep -v "refcount=1 reference=0" 161 162 done 163 done 164 done 165 done 166 done 167 168 echo 169 echo === L1 growth tests === 170 echo 171 CLUSTER_SIZE=1024 172 173 174 for event in \ 175 l1_grow_alloc_table \ 176 l1_grow_write_table \ 177 l1_grow_activate_table \ 178 179 do 180 181 for errno in 5 28; do 182 for imm in off; do 183 for once in on off; do 184 185 cat > "$TEST_DIR/blkdebug.conf" <<EOF 186 [inject-error] 187 event = "$event" 188 errno = "$errno" 189 immediately = "$imm" 190 once = "$once" 191 EOF 192 193 _make_test_img 1G 194 195 echo 196 echo "Event: $event; errno: $errno; imm: $imm; once: $once" 197 $QEMU_IO -c "write -b 0 64k" "$BLKDBG_TEST_IMG" | _filter_qemu_io 198 199 _check_test_img_ignore_leaks 2>&1 | grep -v "refcount=1 reference=0" 200 201 done 202 done 203 done 204 done 205 206 echo 207 echo === Avoid cluster leaks after temporary failure === 208 echo 209 210 cat > "$TEST_DIR/blkdebug.conf" <<EOF 211 [inject-error] 212 event = "write_aio" 213 errno = "5" 214 once = "on" 215 EOF 216 217 # After the failed first write, do a second write so that the updated refcount 218 # block is actually written back 219 _make_test_img 64M 220 $QEMU_IO -c "write 0 1M" -c "write 0 1M" "$BLKDBG_TEST_IMG" | _filter_qemu_io 221 _check_test_img 222 223 echo 224 echo === Avoid freeing preallocated zero clusters on failure === 225 echo 226 227 cat > "$TEST_DIR/blkdebug.conf" <<EOF 228 [inject-error] 229 event = "write_aio" 230 errno = "5" 231 once = "on" 232 EOF 233 234 _make_test_img $CLUSTER_SIZE 235 # Create a preallocated zero cluster 236 $QEMU_IO -c "write 0 $CLUSTER_SIZE" -c "write -z 0 $CLUSTER_SIZE" "$TEST_IMG" \ 237 | _filter_qemu_io 238 # Try to overwrite it (prompting an I/O error from blkdebug), thus 239 # triggering the alloc abort code 240 $QEMU_IO -c "write 0 $CLUSTER_SIZE" "$BLKDBG_TEST_IMG" | _filter_qemu_io 241 242 _check_test_img 243 244 # success, all done 245 echo "*** done" 246 rm -f $seq.full 247 status=0