tests/qemu-iotests/260

   1 #!/usr/bin/env python3
   2 # group: rw quick
   3 #
   4 # Tests for temporary external snapshot when we have bitmaps.
   5 #
   6 # Copyright (c) 2019 Virtuozzo International GmbH. All rights reserved.
   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
  22 import iotests
  23 from iotests import qemu_img_create, file_path, log, filter_qmp_event
  24
  25 iotests.script_initialize(
  26     supported_fmts=['qcow2'],
  27     unsupported_imgopts=['compat']
  28 )
  29
  30 base, top = file_path('base', 'top')
  31 size = 64 * 1024 * 3
  32
  33
  34 def print_bitmap(msg, vm):
  35     result = vm.qmp('query-block')['return'][0]
  36     info = result.get("inserted", {})
  37     if 'dirty-bitmaps' in info:
  38         bitmap = info['dirty-bitmaps'][0]
  39         log('{}: name={} dirty-clusters={}'.format(msg, bitmap['name'],
  40             bitmap['count'] // 64 // 1024))
  41     else:
  42         log(msg + ': not found')
  43
  44
  45 def test(persistent, restart):
  46     assert persistent or not restart
  47     log("\nTestcase {}persistent {} restart\n".format(
  48             '' if persistent else 'non-', 'with' if restart else 'without'))
  49
  50     qemu_img_create('-f', iotests.imgfmt, base, str(size))
  51
  52     vm = iotests.VM().add_drive(base)
  53     vm.launch()
  54
  55     vm.qmp_log('block-dirty-bitmap-add', node='drive0', name='bitmap0',
  56                persistent=persistent)
  57     vm.hmp_qemu_io('drive0', 'write 0 64K')
  58     print_bitmap('initial bitmap', vm)
  59
  60     vm.qmp_log('blockdev-snapshot-sync', device='drive0', snapshot_file=top,
  61                format=iotests.imgfmt, filters=[iotests.filter_qmp_testfiles])
  62     vm.hmp_qemu_io('drive0', 'write 64K 512')
  63     print_bitmap('check that no bitmaps are in snapshot', vm)
  64
  65     if restart:
  66         log("... Restart ...")
  67         vm.shutdown()
  68         vm = iotests.VM().add_drive(top)
  69         vm.launch()
  70
  71     vm.qmp_log('block-commit', device='drive0', top=top,
  72                filters=[iotests.filter_qmp_testfiles])
  73     ev = vm.events_wait((('BLOCK_JOB_READY', None),
  74                          ('BLOCK_JOB_COMPLETED', None)))
  75     log(filter_qmp_event(ev))
  76     if (ev['event'] == 'BLOCK_JOB_COMPLETED'):
  77         vm.shutdown()
  78         log(vm.get_log())
  79         exit()
  80
  81     vm.qmp_log('block-job-complete', device='drive0')
  82     ev = vm.event_wait('BLOCK_JOB_COMPLETED')
  83     log(filter_qmp_event(ev))
  84     print_bitmap('check bitmap after commit', vm)
  85
  86     vm.hmp_qemu_io('drive0', 'write 128K 64K')
  87     print_bitmap('check updated bitmap', vm)
  88
  89     vm.shutdown()
  90
  91
  92 test(persistent=False, restart=False)
  93 test(persistent=True, restart=False)
  94 test(persistent=True, restart=True)