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