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 }
  34 trap "_cleanup; exit \$status" 0 1 2 3 15
  35
  36 # get standard environment, filters and checks
  37 . ./common.rc
  38 . ./common.filter
  39 . ./common.pattern
  40
  41 # Currently only qcow2 supports rebasing
  42 _supported_fmt qcow2
  43 _supported_proto file
  44 _default_cache_mode writethrough
  45 _supported_cache_modes writethrough none
  46 # The refcount table tests expect a certain minimum width for refcount entries
  47 # (so that the refcount table actually needs to grow); that minimum is 16 bits,
  48 # being the default refcount entry width.
  49 # 32 and 64 bits do not work either, however, due to different leaked cluster
  50 # count on error.
  51 # Thus, the only remaining option is refcount_bits=16.
  52 #
  53 # As for data_file, none of the refcount tests can work for it.
  54 _unsupported_imgopts 'refcount_bits=\([^1]\|.\([^6]\|$\)\)' \
  55     data_file
  56
  57 echo "Errors while writing 128 kB"
  58 echo
  59
  60 CLUSTER_SIZE=1024
  61
  62 BLKDBG_TEST_IMG="blkdebug:$TEST_DIR/blkdebug.conf:$TEST_IMG"
  63
  64 for event in \
  65     l1_update \
  66     \
  67     l2_load \
  68     l2_update \
  69     l2_alloc_write \
  70     \
  71     write_aio \
  72     \
  73     refblock_load \
  74     refblock_update_part \
  75     refblock_alloc \
  76     \
  77     cluster_alloc \
  78
  79 do
  80
  81 for errno in 5 28; do
  82 for imm in off; do
  83 for once in on off; do
  84 for vmstate in "" "-b"; do
  85
  86 cat > "$TEST_DIR/blkdebug.conf" <<EOF
  87 [inject-error]
  88 event = "$event"
  89 errno = "$errno"
  90 immediately = "$imm"
  91 once ="$once"
  92 EOF
  93
  94 _make_test_img 1G
  95
  96 echo
  97 echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate"
  98
  99 # We want to catch a simple L2 update, not the allocation of the first L2 table
 100 if [ "$event" == "l2_update" ]; then
 101     $QEMU_IO -c "write $vmstate 0 512" "$TEST_IMG" > /dev/null 2>&1
 102 fi
 103
 104 $QEMU_IO -c "write $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io
 105
 106 # l2_load is not called on allocation, so issue a second write
 107 # Reads are another path to trigger l2_load, so do a read, too
 108 if [ "$event" == "l2_load" ]; then
 109     $QEMU_IO -c "write $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io
 110     $QEMU_IO -c "read $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io
 111 fi
 112
 113 _check_test_img_ignore_leaks 2>&1 | grep -v "refcount=1 reference=0"
 114
 115 done
 116 done
 117 done
 118 done
 119 done
 120
 121
 122 echo
 123 echo === Refcount table growth tests ===
 124 echo
 125 CLUSTER_SIZE=512
 126
 127
 128 for event in \
 129     refblock_alloc_hookup \
 130     refblock_alloc_write \
 131     refblock_alloc_write_blocks \
 132     refblock_alloc_write_table \
 133     refblock_alloc_switch_table \
 134
 135 do
 136
 137 # This one takes a while, so let's test only one error code (ENOSPC should
 138 # never be generated by qemu, so it's probably a good choice)
 139 for errno in 28; do
 140 for imm in off; do
 141 for once in on off; do
 142 for vmstate in "" "-b"; do
 143
 144 cat > "$TEST_DIR/blkdebug.conf" <<EOF
 145 [inject-error]
 146 event = "$event"
 147 errno = "$errno"
 148 immediately = "$imm"
 149 once = "$once"
 150 EOF
 151
 152 _make_test_img 1G
 153
 154 echo
 155 echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate"
 156 $QEMU_IO -c "write $vmstate 0 64M" "$BLKDBG_TEST_IMG" | _filter_qemu_io
 157
 158 _check_test_img_ignore_leaks 2>&1 | grep -v "refcount=1 reference=0"
 159
 160 done
 161 done
 162 done
 163 done
 164 done
 165
 166 echo
 167 echo === L1 growth tests ===
 168 echo
 169 CLUSTER_SIZE=1024
 170
 171
 172 for event in \
 173     l1_grow_alloc_table \
 174     l1_grow_write_table \
 175     l1_grow_activate_table \
 176
 177 do
 178
 179 for errno in 5 28; do
 180 for imm in off; do
 181 for once in on off; do
 182
 183 cat > "$TEST_DIR/blkdebug.conf" <<EOF
 184 [inject-error]
 185 event = "$event"
 186 errno = "$errno"
 187 immediately = "$imm"
 188 once = "$once"
 189 EOF
 190
 191 _make_test_img 1G
 192
 193 echo
 194 echo "Event: $event; errno: $errno; imm: $imm; once: $once"
 195 $QEMU_IO -c "write -b 0 64k" "$BLKDBG_TEST_IMG" | _filter_qemu_io
 196
 197 _check_test_img_ignore_leaks 2>&1 | grep -v "refcount=1 reference=0"
 198
 199 done
 200 done
 201 done
 202 done
 203
 204 echo
 205 echo === Avoid cluster leaks after temporary failure ===
 206 echo
 207
 208 cat > "$TEST_DIR/blkdebug.conf" <<EOF
 209 [inject-error]
 210 event = "write_aio"
 211 errno = "5"
 212 once = "on"
 213 EOF
 214
 215 # After the failed first write, do a second write so that the updated refcount
 216 # block is actually written back
 217 _make_test_img 64M
 218 $QEMU_IO -c "write 0 1M" -c "write 0 1M" "$BLKDBG_TEST_IMG" | _filter_qemu_io
 219 _check_test_img
 220
 221 # success, all done
 222 echo "*** done"
 223 rm -f $seq.full
 224 status=0