tests/qemu-iotests/039

   1 #!/bin/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 here=`pwd`
  31 status=1        # failure is the default!
  32
  33 _cleanup()
  34 {
  35         _cleanup_test_img
  36 }
  37 trap "_cleanup; exit \$status" 0 1 2 3 15
  38
  39 # get standard environment, filters and checks
  40 . ./common.rc
  41 . ./common.filter
  42
  43 _supported_fmt qcow2
  44 _supported_proto file
  45 _supported_os Linux
  46 _default_cache_mode "writethrough"
  47 _supported_cache_modes "writethrough"
  48
  49 size=128M
  50
  51 echo
  52 echo "== Checking that image is clean on shutdown =="
  53
  54 IMGOPTS="compat=1.1,lazy_refcounts=on"
  55 _make_test_img $size
  56
  57 $QEMU_IO -c "write -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
  58
  59 # The dirty bit must not be set
  60 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
  61 _check_test_img
  62
  63 echo
  64 echo "== Creating a dirty image file =="
  65
  66 IMGOPTS="compat=1.1,lazy_refcounts=on"
  67 _make_test_img $size
  68
  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 $QEMU_IO -c "write -P 0x5a 0 512" \
 105          -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
 106     | _filter_qemu_io
 107
 108 # The dirty bit must be set
 109 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
 110
 111 $QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io
 112
 113 # The dirty bit must not be set
 114 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
 115
 116 echo
 117 echo "== Creating an image file with lazy_refcounts=off =="
 118
 119 IMGOPTS="compat=1.1,lazy_refcounts=off"
 120 _make_test_img $size
 121
 122 $QEMU_IO -c "write -P 0x5a 0 512" \
 123          -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
 124     | _filter_qemu_io
 125
 126 # The dirty bit must not be set since lazy_refcounts=off
 127 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
 128 _check_test_img
 129
 130 echo
 131 echo "== Committing to a backing file with lazy_refcounts=on =="
 132
 133 IMGOPTS="compat=1.1,lazy_refcounts=on"
 134 TEST_IMG="$TEST_IMG".base _make_test_img $size
 135
 136 IMGOPTS="compat=1.1,lazy_refcounts=on,backing_file=$TEST_IMG.base"
 137 _make_test_img $size
 138
 139 $QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io
 140 $QEMU_IMG commit "$TEST_IMG"
 141
 142 # The dirty bit must not be set
 143 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
 144 $PYTHON qcow2.py "$TEST_IMG".base dump-header | grep incompatible_features
 145
 146 _check_test_img
 147 TEST_IMG="$TEST_IMG".base _check_test_img
 148
 149 echo
 150 echo "== Changing lazy_refcounts setting at runtime =="
 151
 152 IMGOPTS="compat=1.1,lazy_refcounts=off"
 153 _make_test_img $size
 154
 155 $QEMU_IO -c "reopen -o lazy-refcounts=on" \
 156          -c "write -P 0x5a 0 512" \
 157          -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
 158     | _filter_qemu_io
 159
 160 # The dirty bit must be set
 161 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
 162 _check_test_img
 163
 164 IMGOPTS="compat=1.1,lazy_refcounts=on"
 165 _make_test_img $size
 166
 167 $QEMU_IO -c "reopen -o lazy-refcounts=off" \
 168          -c "write -P 0x5a 0 512" \
 169          -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
 170     | _filter_qemu_io
 171
 172 # The dirty bit must not be set
 173 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
 174 _check_test_img
 175
 176
 177 # success, all done
 178 echo "*** done"
 179 rm -f $seq.full
 180 status=0
 181