tests/qemu-iotests/254

   1 #!/usr/bin/env python
   2 #
   3 # Test external snapshot with bitmap copying.
   4 #
   5 # Copyright (c) 2019 Virtuozzo International GmbH. All rights reserved.
   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 import iotests
  22 from iotests import qemu_img_create, file_path, log
  23
  24 iotests.verify_image_format(supported_fmts=['qcow2'])
  25
  26 disk, top = file_path('disk', 'top')
  27 size = 1024 * 1024
  28
  29 qemu_img_create('-f', iotests.imgfmt, disk, str(size))
  30
  31 vm = iotests.VM().add_drive(disk, opts='node-name=base')
  32 vm.launch()
  33
  34 vm.qmp_log('block-dirty-bitmap-add', node='drive0', name='bitmap0')
  35
  36 vm.hmp_qemu_io('drive0', 'write 0 512K')
  37
  38 vm.qmp_log('transaction', indent=2, actions=[
  39     {'type': 'blockdev-snapshot-sync',
  40      'data': {'device': 'drive0', 'snapshot-file': top,
  41               'snapshot-node-name': 'snap'}},
  42     {'type': 'block-dirty-bitmap-add',
  43      'data': {'node': 'snap', 'name': 'bitmap0'}},
  44     {'type': 'block-dirty-bitmap-merge',
  45      'data': {'node': 'snap', 'target': 'bitmap0',
  46               'bitmaps': [{'node': 'base', 'name': 'bitmap0'}]}}
  47 ], filters=[iotests.filter_qmp_testfiles])
  48
  49 result = vm.qmp('query-block')['return'][0]
  50 log("query-block: device = {}, node-name = {}, dirty-bitmaps:".format(
  51     result['device'], result['inserted']['node-name']))
  52 log(result['dirty-bitmaps'], indent=2)
  53
  54 vm.shutdown()