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 # Some of these test cases expect no external data file so that all
  48 # clusters are part of the qcow2 image and refcounted
  49 _unsupported_imgopts data_file
  50
  51 size=128M
  52
  53 echo
  54 echo "== Checking that image is clean on shutdown =="
  55
  56 _make_test_img -o "compat=1.1,lazy_refcounts=on" $size
  57
  58 $QEMU_IO -c "write -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
  59
  60 # The dirty bit must not be set
  61 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
  62 _check_test_img
  63
  64 echo
  65 echo "== Creating a dirty image file =="
  66
  67 _make_test_img -o "compat=1.1,lazy_refcounts=on" $size
  68
  69 _NO_VALGRIND \
  70 $QEMU_IO -c "write -P 0x5a 0 512" \
  71          -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
  72     | _filter_qemu_io
  73
  74 # The dirty bit must be set
  75 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
  76 _check_test_img
  77
  78 echo
  79 echo "== Read-only access must still work =="
  80
  81 $QEMU_IO -r -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
  82
  83 # The dirty bit must be set
  84 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
  85
  86 echo
  87 echo "== Repairing the image file must succeed =="
  88
  89 _check_test_img -r all
  90
  91 # The dirty bit must not be set
  92 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
  93
  94 echo
  95 echo "== Data should still be accessible after repair =="
  96
  97 $QEMU_IO -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
  98
  99 echo
 100 echo "== Opening a dirty image read/write should repair it =="
 101
 102 _make_test_img -o "compat=1.1,lazy_refcounts=on" $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 _make_test_img -o "compat=1.1,lazy_refcounts=off" $size
 121
 122 _NO_VALGRIND \
 123 $QEMU_IO -c "write -P 0x5a 0 512" \
 124          -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
 125     | _filter_qemu_io
 126
 127 # The dirty bit must not be set since lazy_refcounts=off
 128 $PYTHON qcow2.py "$TEST_IMG" dump-header | grep incompatible_features
 129 _check_test_img
 130
 131 echo
 132 echo "== Committing to a backing file with lazy_refcounts=on =="
 133
 134 TEST_IMG="$TEST_IMG".base _make_test_img -o "compat=1.1,lazy_refcounts=on" $size
 135
 136 _make_test_img -o "compat=1.1,lazy_refcounts=on,backing_file=$TEST_IMG.base" \
 137     -F $IMGFMT $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 _make_test_img -o "compat=1.1,lazy_refcounts=off" $size
 153
 154 _NO_VALGRIND \
 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 _make_test_img -o "compat=1.1,lazy_refcounts=on" $size
 165
 166 _NO_VALGRIND \
 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