qemu/tests/qemu-iotests/304
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   1#!/usr/bin/env python3
   2# group: rw quick
   3#
   4# Tests dirty-bitmap backup with unaligned bitmap granularity
   5#
   6# Copyright (c) 2020 Proxmox Server Solutions
   7#
   8# This program is free software; you can redistribute it and/or modify
   9# it under the terms of the GNU General Public License as published by
  10# the Free Software Foundation; either version 2 of the License, or
  11# (at your option) any later version.
  12#
  13# This program is distributed in the hope that it will be useful,
  14# but WITHOUT ANY WARRANTY; without even the implied warranty of
  15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16# GNU General Public License for more details.
  17#
  18# You should have received a copy of the GNU General Public License
  19# along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20#
  21# owner=s.reiter@proxmox.com
  22
  23import iotests
  24from iotests import qemu_img_create, qemu_img_log, file_path
  25
  26iotests.script_initialize(supported_fmts=['qcow2'],
  27                          supported_protocols=['file'])
  28
  29test_img = file_path('test.qcow2')
  30target_img = file_path('target.qcow2')
  31
  32# unaligned by one byte
  33image_len = 4097
  34bitmap_granularity = 4096
  35
  36qemu_img_create('-f', iotests.imgfmt, test_img, str(image_len))
  37
  38# create VM
  39vm = iotests.VM().add_drive(test_img)
  40vm.launch()
  41
  42# write to the entire image
  43vm.hmp_qemu_io('drive0', 'write -P0x16 0 4096');
  44vm.hmp_qemu_io('drive0', 'write -P0x17 4096 1');
  45
  46# do backup and wait for completion
  47vm.qmp('drive-backup', **{
  48    'device': 'drive0',
  49    'sync': 'full',
  50    'target': target_img
  51})
  52
  53event = vm.event_wait(name='BLOCK_JOB_COMPLETED',
  54                      match={'data': {'device': 'drive0'}},
  55                      timeout=5.0)
  56
  57# shutdown to sync images
  58vm.shutdown()
  59
  60# backup succeeded, check if image is correct
  61qemu_img_log('compare', test_img, target_img)
  62