tests/qemu-iotests/039

   1 #!/usr/bin/env bash
   2 #
   3 # Test qcow2 lazy refcounts
   4 #
   5 # Copyright (C) 2012 Red Hat, Inc.
   6 # Copyright IBM, Corp. 2010
   7 #
   8 # Based on test 038.
   9 #
  10 # This program is free software; you can redistribute it and/or modify
  11 # it under the terms of the GNU General Public License as published by
  12 # the Free Software Foundation; either version 2 of the License, or
  13 # (at your option) any later version.
  14 #
  15 # This program is distributed in the hope that it will be useful,
  16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 # GNU General Public License for more details.
  19 #
  20 # You should have received a copy of the GNU General Public License
  21 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22 #
  23
  24 # creator
  25 owner=stefanha@linux.vnet.ibm.com
  26
  27 seq=`basename $0`
  28 echo "QA output created by $seq"
  29
  30 status=1        # failure is the default!
  31
  32 _cleanup()
  33 {
  34         _cleanup_test_img
  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
  42 _supported_fmt qcow2
  43 _supported_proto file
  44 _supported_os Linux
  45 _default_cache_mode writethrough
  46 _supported_cache_modes writethrough
  47
  48 size=128M
  49
  50 echo
  51 echo "== Checking that image is clean on shutdown =="
  52
  53 IMGOPTS="compat=1.1,lazy_refcounts=on"
  54 _make_test_img $size
  55
  56 $QEMU_IO -c "write -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
  57
  58 # The dirty bit must not be set
  59 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
  60 _check_test_img
  61
  62 echo
  63 echo "== Creating a dirty image file =="
  64
  65 IMGOPTS="compat=1.1,lazy_refcounts=on"
  66 _make_test_img $size
  67
  68 _NO_VALGRIND \
  69 $QEMU_IO -c "write -P 0x5a 0 512" \
  70          -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
  71     | _filter_qemu_io
  72
  73 # The dirty bit must be set
  74 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
  75 _check_test_img
  76
  77 echo
  78 echo "== Read-only access must still work =="
  79
  80 $QEMU_IO -r -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
  81
  82 # The dirty bit must be set
  83 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
  84
  85 echo
  86 echo "== Repairing the image file must succeed =="
  87
  88 _check_test_img -r all
  89
  90 # The dirty bit must not be set
  91 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
  92
  93 echo
  94 echo "== Data should still be accessible after repair =="
  95
  96 $QEMU_IO -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
  97
  98 echo
  99 echo "== Opening a dirty image read/write should repair it =="
 100
 101 IMGOPTS="compat=1.1,lazy_refcounts=on"
 102 _make_test_img $size
 103
 104 _NO_VALGRIND \
 105 $QEMU_IO -c "write -P 0x5a 0 512" \
 106          -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
 107     | _filter_qemu_io
 108
 109 # The dirty bit must be set
 110 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
 111
 112 $QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io
 113
 114 # The dirty bit must not be set
 115 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
 116
 117 echo
 118 echo "== Creating an image file with lazy_refcounts=off =="
 119
 120 IMGOPTS="compat=1.1,lazy_refcounts=off"
 121 _make_test_img $size
 122
 123 _NO_VALGRIND \
 124 $QEMU_IO -c "write -P 0x5a 0 512" \
 125          -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
 126     | _filter_qemu_io
 127
 128 # The dirty bit must not be set since lazy_refcounts=off
 129 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
 130 _check_test_img
 131
 132 echo
 133 echo "== Committing to a backing file with lazy_refcounts=on =="
 134
 135 IMGOPTS="compat=1.1,lazy_refcounts=on"
 136 TEST_IMG="$TEST_IMG".base _make_test_img $size
 137
 138 IMGOPTS="compat=1.1,lazy_refcounts=on,backing_file=$TEST_IMG.base"
 139 _make_test_img $size
 140
 141 $QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io
 142 $QEMU_IMG commit "$TEST_IMG"
 143
 144 # The dirty bit must not be set
 145 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
 146 $PYTHON qcow2.py "$TEST_IMG".base dump-header | grep incompatible_features
 147
 148 _check_test_img
 149 TEST_IMG="$TEST_IMG".base _check_test_img
 150
 151 echo
 152 echo "== Changing lazy_refcounts setting at runtime =="
 153
 154 IMGOPTS="compat=1.1,lazy_refcounts=off"
 155 _make_test_img $size
 156
 157 _NO_VALGRIND \
 158 $QEMU_IO -c "reopen -o lazy-refcounts=on" \
 159          -c "write -P 0x5a 0 512" \
 160          -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
 161     | _filter_qemu_io
 162
 163 # The dirty bit must be set
 164 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
 165 _check_test_img
 166
 167 IMGOPTS="compat=1.1,lazy_refcounts=on"
 168 _make_test_img $size
 169
 170 _NO_VALGRIND \
 171 $QEMU_IO -c "reopen -o lazy-refcounts=off" \
 172          -c "write -P 0x5a 0 512" \
 173          -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
 174     | _filter_qemu_io
 175
 176 # The dirty bit must not be set
 177 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
 178 _check_test_img
 179
 180
 181 # success, all done
 182 echo "*** done"
 183 rm -f $seq.full
 184 status=0
 185