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 _unsupported_imgopts 'refcount_bits=\([^1]\|.\([^6]\|$\)\)'
  53
  54 echo "Errors while writing 128 kB"
  55 echo
  56
  57 CLUSTER_SIZE=1024
  58
  59 BLKDBG_TEST_IMG="blkdebug:$TEST_DIR/blkdebug.conf:$TEST_IMG"
  60
  61 for event in \
  62     l1_update \
  63     \
  64     l2_load \
  65     l2_update \
  66     l2_alloc_write \
  67     \
  68     write_aio \
  69     \
  70     refblock_load \
  71     refblock_update_part \
  72     refblock_alloc \
  73     \
  74     cluster_alloc \
  75
  76 do
  77
  78 for errno in 5 28; do
  79 for imm in off; do
  80 for once in on off; do
  81 for vmstate in "" "-b"; do
  82
  83 cat > "$TEST_DIR/blkdebug.conf" <<EOF
  84 [inject-error]
  85 event = "$event"
  86 errno = "$errno"
  87 immediately = "$imm"
  88 once ="$once"
  89 EOF
  90
  91 _make_test_img 1G
  92
  93 echo
  94 echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate"
  95
  96 # We want to catch a simple L2 update, not the allocation of the first L2 table
  97 if [ "$event" == "l2_update" ]; then
  98     $QEMU_IO -c "write $vmstate 0 512" "$TEST_IMG" > /dev/null 2>&1
  99 fi
 100
 101 $QEMU_IO -c "write $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io
 102
 103 # l2_load is not called on allocation, so issue a second write
 104 # Reads are another path to trigger l2_load, so do a read, too
 105 if [ "$event" == "l2_load" ]; then
 106     $QEMU_IO -c "write $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io
 107     $QEMU_IO -c "read $vmstate 0 128k " "$BLKDBG_TEST_IMG" | _filter_qemu_io
 108 fi
 109
 110 _check_test_img 2>&1 | grep -v "refcount=1 reference=0"
 111
 112 done
 113 done
 114 done
 115 done
 116 done
 117
 118
 119 echo
 120 echo === Refcount table growth tests ===
 121 echo
 122 CLUSTER_SIZE=512
 123
 124
 125 for event in \
 126     refblock_alloc_hookup \
 127     refblock_alloc_write \
 128     refblock_alloc_write_blocks \
 129     refblock_alloc_write_table \
 130     refblock_alloc_switch_table \
 131
 132 do
 133
 134 # This one takes a while, so let's test only one error code (ENOSPC should
 135 # never be generated by qemu, so it's probably a good choice)
 136 for errno in 28; do
 137 for imm in off; do
 138 for once in on off; do
 139 for vmstate in "" "-b"; do
 140
 141 cat > "$TEST_DIR/blkdebug.conf" <<EOF
 142 [inject-error]
 143 event = "$event"
 144 errno = "$errno"
 145 immediately = "$imm"
 146 once = "$once"
 147 EOF
 148
 149 _make_test_img 1G
 150
 151 echo
 152 echo "Event: $event; errno: $errno; imm: $imm; once: $once; write $vmstate"
 153 $QEMU_IO -c "write $vmstate 0 64M" "$BLKDBG_TEST_IMG" | _filter_qemu_io
 154
 155 _check_test_img 2>&1 | grep -v "refcount=1 reference=0"
 156
 157 done
 158 done
 159 done
 160 done
 161 done
 162
 163 echo
 164 echo === L1 growth tests ===
 165 echo
 166 CLUSTER_SIZE=1024
 167
 168
 169 for event in \
 170     l1_grow_alloc_table \
 171     l1_grow_write_table \
 172     l1_grow_activate_table \
 173
 174 do
 175
 176 for errno in 5 28; do
 177 for imm in off; do
 178 for once in on off; do
 179
 180 cat > "$TEST_DIR/blkdebug.conf" <<EOF
 181 [inject-error]
 182 event = "$event"
 183 errno = "$errno"
 184 immediately = "$imm"
 185 once = "$once"
 186 EOF
 187
 188 _make_test_img 1G
 189
 190 echo
 191 echo "Event: $event; errno: $errno; imm: $imm; once: $once"
 192 $QEMU_IO -c "write -b 0 64k" "$BLKDBG_TEST_IMG" | _filter_qemu_io
 193
 194 _check_test_img 2>&1 | grep -v "refcount=1 reference=0"
 195
 196 done
 197 done
 198 done
 199 done
 200
 201 echo
 202 echo === Avoid cluster leaks after temporary failure ===
 203 echo
 204
 205 cat > "$TEST_DIR/blkdebug.conf" <<EOF
 206 [inject-error]
 207 event = "write_aio"
 208 errno = "5"
 209 once = "on"
 210 EOF
 211
 212 # After the failed first write, do a second write so that the updated refcount
 213 # block is actually written back
 214 _make_test_img 64M
 215 $QEMU_IO -c "write 0 1M" -c "write 0 1M" "$BLKDBG_TEST_IMG" | _filter_qemu_io
 216 _check_test_img
 217
 218 # success, all done
 219 echo "*** done"
 220 rm -f $seq.full
 221 status=0