tests/qemu-iotests/202

   1 #!/usr/bin/env python3
   2 # group: rw quick
   3 #
   4 # Copyright (C) 2017 Red Hat, Inc.
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 2 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 #
  19 # Creator/Owner: Stefan Hajnoczi <stefanha@redhat.com>
  20 #
  21 # Check that QMP 'transaction' blockdev-snapshot-sync with multiple drives on a
  22 # single IOThread completes successfully.  This particular command triggered a
  23 # hang due to recursive AioContext locking and BDRV_POLL_WHILE().  Protect
  24 # against regressions.
  25
  26 import iotests
  27
  28 iotests.script_initialize(supported_fmts=['qcow2'],
  29                           supported_platforms=['linux'])
  30
  31 with iotests.FilePath('disk0.img') as disk0_img_path, \
  32      iotests.FilePath('disk1.img') as disk1_img_path, \
  33      iotests.FilePath('disk0-snap.img') as disk0_snap_img_path, \
  34      iotests.FilePath('disk1-snap.img') as disk1_snap_img_path, \
  35      iotests.VM() as vm:
  36
  37     img_size = '10M'
  38     iotests.qemu_img_create('-f', iotests.imgfmt, disk0_img_path, img_size)
  39     iotests.qemu_img_create('-f', iotests.imgfmt, disk1_img_path, img_size)
  40
  41     iotests.log('Launching VM...')
  42     vm.launch()
  43
  44     iotests.log('Adding IOThread...')
  45     iotests.log(vm.qmp('object-add',
  46                        qom_type='iothread',
  47                        id='iothread0'))
  48
  49     iotests.log('Adding blockdevs...')
  50     iotests.log(vm.qmp('blockdev-add',
  51                        driver=iotests.imgfmt,
  52                        node_name='disk0',
  53                        file={
  54                            'driver': 'file',
  55                            'filename': disk0_img_path,
  56                        }))
  57     iotests.log(vm.qmp('blockdev-add',
  58                        driver=iotests.imgfmt,
  59                        node_name='disk1',
  60                        file={
  61                            'driver': 'file',
  62                            'filename': disk1_img_path,
  63                        }))
  64
  65     iotests.log('Setting iothread...')
  66     iotests.log(vm.qmp('x-blockdev-set-iothread',
  67                        node_name='disk0',
  68                        iothread='iothread0'))
  69     iotests.log(vm.qmp('x-blockdev-set-iothread',
  70                        node_name='disk1',
  71                        iothread='iothread0'))
  72
  73     iotests.log('Creating external snapshots...')
  74     iotests.log(vm.qmp(
  75                   'transaction',
  76                   actions=[
  77                       {
  78                           'data': {
  79                               'node-name': 'disk0',
  80                               'snapshot-file': disk0_snap_img_path,
  81                               'snapshot-node-name': 'disk0-snap',
  82                               'mode': 'absolute-paths',
  83                               'format': iotests.imgfmt,
  84                           },
  85                           'type': 'blockdev-snapshot-sync'
  86                       }, {
  87                           'data': {
  88                               'node-name': 'disk1',
  89                               'snapshot-file': disk1_snap_img_path,
  90                               'snapshot-node-name': 'disk1-snap',
  91                               'mode': 'absolute-paths',
  92                               'format': iotests.imgfmt
  93                           },
  94                           'type': 'blockdev-snapshot-sync'
  95                       }
  96                   ]))