tests/qemu-iotests/256

   1 #!/usr/bin/env python3
   2 #
   3 # Test incremental/backup across iothread contexts
   4 #
   5 # Copyright (c) 2019 John Snow for Red Hat, Inc.
   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 # owner=jsnow@redhat.com
  21
  22 import os
  23 import iotests
  24 from iotests import log
  25
  26 iotests.script_initialize(supported_fmts=['qcow2'])
  27 size = 64 * 1024 * 1024
  28
  29 with iotests.FilePath('img0') as img0_path, \
  30      iotests.FilePath('img1') as img1_path, \
  31      iotests.FilePath('img0-full') as img0_full_path, \
  32      iotests.FilePath('img1-full') as img1_full_path, \
  33      iotests.FilePath('img0-incr') as img0_incr_path, \
  34      iotests.FilePath('img1-incr') as img1_incr_path, \
  35      iotests.VM() as vm:
  36
  37     def create_target(filepath, name, size):
  38         basename = os.path.basename(filepath)
  39         nodename = "file_{}".format(basename)
  40         log(vm.command('blockdev-create', job_id='job1',
  41                        options={
  42                            'driver': 'file',
  43                            'filename': filepath,
  44                            'size': 0,
  45                        }))
  46         vm.run_job('job1')
  47         log(vm.command('blockdev-add', driver='file',
  48                        node_name=nodename, filename=filepath))
  49         log(vm.command('blockdev-create', job_id='job2',
  50                        options={
  51                            'driver': iotests.imgfmt,
  52                            'file': nodename,
  53                            'size': size,
  54                        }))
  55         vm.run_job('job2')
  56         log(vm.command('blockdev-add', driver=iotests.imgfmt,
  57                        node_name=name,
  58                        file=nodename))
  59
  60     log('--- Preparing images & VM ---\n')
  61     vm.add_object('iothread,id=iothread0')
  62     vm.add_object('iothread,id=iothread1')
  63     vm.add_device('virtio-scsi-pci,id=scsi0,iothread=iothread0')
  64     vm.add_device('virtio-scsi-pci,id=scsi1,iothread=iothread1')
  65     iotests.qemu_img_create('-f', iotests.imgfmt, img0_path, str(size))
  66     iotests.qemu_img_create('-f', iotests.imgfmt, img1_path, str(size))
  67     vm.add_drive(img0_path, interface='none')
  68     vm.add_device('scsi-hd,id=device0,drive=drive0,bus=scsi0.0')
  69     vm.add_drive(img1_path, interface='none')
  70     vm.add_device('scsi-hd,id=device1,drive=drive1,bus=scsi1.0')
  71
  72     log('--- Starting VM ---\n')
  73     vm.launch()
  74
  75     log('--- Create Targets & Full Backups ---\n')
  76     create_target(img0_full_path, 'img0-full', size)
  77     create_target(img1_full_path, 'img1-full', size)
  78     ret = vm.qmp_log('transaction', indent=2, actions=[
  79         { 'type': 'block-dirty-bitmap-add',
  80           'data': { 'node': 'drive0', 'name': 'bitmap0' }},
  81         { 'type': 'block-dirty-bitmap-add',
  82           'data': { 'node': 'drive1', 'name': 'bitmap1' }},
  83         { 'type': 'blockdev-backup',
  84           'data': { 'device': 'drive0',
  85                     'target': 'img0-full',
  86                     'sync': 'full',
  87                     'job-id': 'j0' }},
  88         { 'type': 'blockdev-backup',
  89           'data': { 'device': 'drive1',
  90                     'target': 'img1-full',
  91                     'sync': 'full',
  92                     'job-id': 'j1' }}
  93     ])
  94     if "error" in ret:
  95         raise Exception(ret['error']['desc'])
  96     vm.run_job('j0', auto_dismiss=True)
  97     vm.run_job('j1', auto_dismiss=True)
  98
  99     log('\n--- Create Targets & Incremental Backups ---\n')
 100     create_target(img0_incr_path, 'img0-incr', size)
 101     create_target(img1_incr_path, 'img1-incr', size)
 102     ret = vm.qmp_log('transaction', indent=2, actions=[
 103         { 'type': 'blockdev-backup',
 104           'data': { 'device': 'drive0',
 105                     'target': 'img0-incr',
 106                     'sync': 'incremental',
 107                     'bitmap': 'bitmap0',
 108                     'job-id': 'j2' }},
 109         { 'type': 'blockdev-backup',
 110           'data': { 'device': 'drive1',
 111                     'target': 'img1-incr',
 112                     'sync': 'incremental',
 113                     'bitmap': 'bitmap1',
 114                     'job-id': 'j3' }}
 115     ])
 116     if "error" in ret:
 117         raise Exception(ret['error']['desc'])
 118     vm.run_job('j2', auto_dismiss=True)
 119     vm.run_job('j3', auto_dismiss=True)
 120
 121     log('\n--- Done ---')
 122     vm.shutdown()