tests/qemu-iotests/026

   1 #!/usr/bin/env bash
   2 #
   3 # qcow2 error path testing
   4 #
   5 # Copyright (C) 2010 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 $seq"
  26
  27 status=1        # failure is the default!
  28
  29 _cleanup()
  30 {
  31         _cleanup_test_img
  32     rm "$TEST_DIR/blkdebug.conf"
  33     rm -f "$TEST_IMG.data_file"
  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 . ./common.pattern
  41
  42 # Currently only qcow2 supports rebasing
  43 _supported_fmt qcow2
  44 _supported_proto file
  45 _default_cache_mode writethrough
  46 _supported_cache_modes writethrough none
  47 # The refcount table tests expect a certain minimum width for refcount entries
  48 # (so that the refcount table actually needs to grow); that minimum is 16 bits,
  49 # being the default refcount entry width.
  50 # 32 and 64 bits do not work either, however, due to different leaked cluster
  51 # count on error.
  52 # Thus, the only remaining option is refcount_bits=16.
  53 #
  54 # As for data_file, none of the refcount tests can work for it.
  55 _unsupported_imgopts 'refcount_bits=\([^1]\|.\([^6]\|$\)\)' \
  56     data_file
  57
  58 echo "Errors while writing 128 kB"
  59 echo
  60
  61 CLUSTER_SIZE=1024
  62
  63 BLKDBG_TEST_IMG="blkdebug:$TEST_DIR/blkdebug.conf:$TEST_IMG"
  64
  65 for event in \
  66     l1_update \
  67     \
  68     l2_load \
  69     l2_update \
  70     l2_alloc_write \
  71     \
  72     write_aio \
  73     \
  74     refblock_load \
  75     refblock_update_part \
  76     refblock_alloc \
  77     \
  78     cluster_alloc \
  79
  80 do
  81
  82 for errno in 5 28; do
  83 for imm in off; do
  84 for once in on off; do
  85 for vmstate in "" "-b"; do
  86
  87 cat > "$TEST_DIR/blkdebug.conf" <<EOF
  88 [inject-error]
  89 event = "$event"
  90 errno = "$errno"
  91 immediately = "$imm"
  92 once ="$once"
  93 EOF
  94
  95 _make_test_img 1G
  96
  97 echo
  98 echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate"
  99
 100 # We want to catch a simple L2 update, not the allocation of the first L2 table
 101 if [ "$event" == "l2_update" ]; then
 102     $QEMU_IO -c "write $vmstate 0 512" "$TEST_IMG" > /dev/null 2>&1
 103 fi
 104
 105 $QEMU_IO -c "write $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io
 106
 107 # l2_load is not called on allocation, so issue a second write
 108 # Reads are another path to trigger l2_load, so do a read, too
 109 if [ "$event" == "l2_load" ]; then
 110     $QEMU_IO -c "write $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io
 111     $QEMU_IO -c "read $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io
 112 fi
 113
 114 _check_test_img_ignore_leaks 2>&1 | grep -v "refcount=1 reference=0"
 115
 116 done
 117 done
 118 done
 119 done
 120 done
 121
 122
 123 echo
 124 echo === Refcount table growth tests ===
 125 echo
 126 CLUSTER_SIZE=512
 127
 128
 129 for event in \
 130     refblock_alloc_hookup \
 131     refblock_alloc_write \
 132     refblock_alloc_write_blocks \
 133     refblock_alloc_write_table \
 134     refblock_alloc_switch_table \
 135
 136 do
 137
 138 # This one takes a while, so let's test only one error code (ENOSPC should
 139 # never be generated by qemu, so it's probably a good choice)
 140 for errno in 28; do
 141 for imm in off; do
 142 for once in on off; do
 143 for vmstate in "" "-b"; do
 144
 145 cat > "$TEST_DIR/blkdebug.conf" <<EOF
 146 [inject-error]
 147 event = "$event"
 148 errno = "$errno"
 149 immediately = "$imm"
 150 once = "$once"
 151 EOF
 152
 153 _make_test_img 1G
 154
 155 echo
 156 echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate"
 157 $QEMU_IO -c "write $vmstate 0 64M" "$BLKDBG_TEST_IMG" | _filter_qemu_io
 158
 159 _check_test_img_ignore_leaks 2>&1 | grep -v "refcount=1 reference=0"
 160
 161 done
 162 done
 163 done
 164 done
 165 done
 166
 167 echo
 168 echo === L1 growth tests ===
 169 echo
 170 CLUSTER_SIZE=1024
 171
 172
 173 for event in \
 174     l1_grow_alloc_table \
 175     l1_grow_write_table \
 176     l1_grow_activate_table \
 177
 178 do
 179
 180 for errno in 5 28; do
 181 for imm in off; do
 182 for once in on off; do
 183
 184 cat > "$TEST_DIR/blkdebug.conf" <<EOF
 185 [inject-error]
 186 event = "$event"
 187 errno = "$errno"
 188 immediately = "$imm"
 189 once = "$once"
 190 EOF
 191
 192 _make_test_img 1G
 193
 194 echo
 195 echo "Event: $event; errno: $errno; imm: $imm; once: $once"
 196 $QEMU_IO -c "write -b 0 64k" "$BLKDBG_TEST_IMG" | _filter_qemu_io
 197
 198 _check_test_img_ignore_leaks 2>&1 | grep -v "refcount=1 reference=0"
 199
 200 done
 201 done
 202 done
 203 done
 204
 205 echo
 206 echo === Avoid cluster leaks after temporary failure ===
 207 echo
 208
 209 cat > "$TEST_DIR/blkdebug.conf" <<EOF
 210 [inject-error]
 211 event = "write_aio"
 212 errno = "5"
 213 once = "on"
 214 EOF
 215
 216 # After the failed first write, do a second write so that the updated refcount
 217 # block is actually written back
 218 _make_test_img 64M
 219 $QEMU_IO -c "write 0 1M" -c "write 0 1M" "$BLKDBG_TEST_IMG" | _filter_qemu_io
 220 _check_test_img
 221
 222 echo
 223 echo === Avoid freeing preallocated zero clusters on failure ===
 224 echo
 225
 226 cat > "$TEST_DIR/blkdebug.conf" <<EOF
 227 [inject-error]
 228 event = "write_aio"
 229 errno = "5"
 230 once = "on"
 231 EOF
 232
 233 _make_test_img $CLUSTER_SIZE
 234 # Create a preallocated zero cluster
 235 $QEMU_IO -c "write 0 $CLUSTER_SIZE" -c "write -z 0 $CLUSTER_SIZE" "$TEST_IMG" \
 236     | _filter_qemu_io
 237 # Try to overwrite it (prompting an I/O error from blkdebug), thus
 238 # triggering the alloc abort code
 239 $QEMU_IO -c "write 0 $CLUSTER_SIZE" "$BLKDBG_TEST_IMG" | _filter_qemu_io
 240
 241 _check_test_img
 242
 243 # success, all done
 244 echo "*** done"
 245 rm -f $seq.full
 246 status=0