tests/qemu-iotests/039

   1 #!/usr/bin/env bash
   2 # group: rw auto quick
   3 #
   4 # Test qcow2 lazy refcounts
   5 #
   6 # Copyright (C) 2012 Red Hat, Inc.
   7 # Copyright IBM, Corp. 2010
   8 #
   9 # Based on test 038.
  10 #
  11 # This program is free software; you can redistribute it and/or modify
  12 # it under the terms of the GNU General Public License as published by
  13 # the Free Software Foundation; either version 2 of the License, or
  14 # (at your option) any later version.
  15 #
  16 # This program is distributed in the hope that it will be useful,
  17 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 # GNU General Public License for more details.
  20 #
  21 # You should have received a copy of the GNU General Public License
  22 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23 #
  24
  25 # creator
  26 owner=stefanha@redhat.com
  27
  28 seq=`basename $0`
  29 echo "QA output created by $seq"
  30
  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 fuse
  45 _supported_os Linux
  46 _default_cache_mode writethrough
  47 _supported_cache_modes writethrough
  48 # Some of these test cases expect no external data file so that all
  49 # clusters are part of the qcow2 image and refcounted
  50 _unsupported_imgopts data_file
  51
  52 size=128M
  53
  54 echo
  55 echo "== Checking that image is clean on shutdown =="
  56
  57 _make_test_img -o "compat=1.1,lazy_refcounts=on" $size
  58
  59 $QEMU_IO -c "write -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
  60
  61 # The dirty bit must not be set
  62 _qcow2_dump_header | grep incompatible_features
  63 _check_test_img
  64
  65 echo
  66 echo "== Creating a dirty image file =="
  67
  68 _make_test_img -o "compat=1.1,lazy_refcounts=on" $size
  69
  70 _NO_VALGRIND \
  71 $QEMU_IO -c "write -P 0x5a 0 512" \
  72          -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
  73     | _filter_qemu_io
  74
  75 # The dirty bit must be set
  76 _qcow2_dump_header | grep incompatible_features
  77 _check_test_img
  78
  79 echo
  80 echo "== Read-only access must still work =="
  81
  82 $QEMU_IO -r -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
  83
  84 # The dirty bit must be set
  85 _qcow2_dump_header | grep incompatible_features
  86
  87 echo
  88 echo "== Repairing the image file must succeed =="
  89
  90 _check_test_img -r all
  91
  92 # The dirty bit must not be set
  93 _qcow2_dump_header | grep incompatible_features
  94
  95 echo
  96 echo "== Data should still be accessible after repair =="
  97
  98 $QEMU_IO -c "read -P 0x5a 0 512" "$TEST_IMG" | _filter_qemu_io
  99
 100 echo
 101 echo "== Opening a dirty image read/write should repair it =="
 102
 103 _make_test_img -o "compat=1.1,lazy_refcounts=on" $size
 104
 105 _NO_VALGRIND \
 106 $QEMU_IO -c "write -P 0x5a 0 512" \
 107          -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
 108     | _filter_qemu_io
 109
 110 # The dirty bit must be set
 111 _qcow2_dump_header | grep incompatible_features
 112
 113 $QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io
 114
 115 # The dirty bit must not be set
 116 _qcow2_dump_header | grep incompatible_features
 117
 118 echo
 119 echo "== Creating an image file with lazy_refcounts=off =="
 120
 121 _make_test_img -o "compat=1.1,lazy_refcounts=off" $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 _qcow2_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 TEST_IMG="$TEST_IMG".base _make_test_img -o "compat=1.1,lazy_refcounts=on" $size
 136
 137 _make_test_img -o "compat=1.1,lazy_refcounts=on,backing_file=$TEST_IMG.base" \
 138     -F $IMGFMT $size
 139
 140 $QEMU_IO -c "write 0 512" "$TEST_IMG" | _filter_qemu_io
 141 $QEMU_IMG commit "$TEST_IMG"
 142
 143 # The dirty bit must not be set
 144 _qcow2_dump_header | grep incompatible_features
 145 _qcow2_dump_header "$TEST_IMG".base | grep incompatible_features
 146
 147 _check_test_img
 148 TEST_IMG="$TEST_IMG".base _check_test_img
 149
 150 echo
 151 echo "== Changing lazy_refcounts setting at runtime =="
 152
 153 _make_test_img -o "compat=1.1,lazy_refcounts=off" $size
 154
 155 _NO_VALGRIND \
 156 $QEMU_IO -c "reopen -o lazy-refcounts=on" \
 157          -c "write -P 0x5a 0 512" \
 158          -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
 159     | _filter_qemu_io
 160
 161 # The dirty bit must be set
 162 _qcow2_dump_header | grep incompatible_features
 163 _check_test_img
 164
 165 _make_test_img -o "compat=1.1,lazy_refcounts=on" $size
 166
 167 _NO_VALGRIND \
 168 $QEMU_IO -c "reopen -o lazy-refcounts=off" \
 169          -c "write -P 0x5a 0 512" \
 170          -c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
 171     | _filter_qemu_io
 172
 173 # The dirty bit must not be set
 174 _qcow2_dump_header | grep incompatible_features
 175 _check_test_img
 176
 177
 178 # success, all done
 179 echo "*** done"
 180 rm -f $seq.full
 181 status=0
 182