3 # Copyright (C) 2019 Red Hat, Inc.
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 2 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
18 # Creator/Owner: Kevin Wolf <kwolf@redhat.com>
20 # Test migration to file for taking an external snapshot with VM state.
25 iotests.verify_image_format(supported_fmts=['qcow2'])
26 iotests.verify_protocol(supported=['file'])
27 iotests.verify_platform(['linux'])
29 with iotests.FilePath('base') as base_path , \
30 iotests.FilePath('top') as top_path, \
33 iotests.qemu_img_log('create', '-f', iotests.imgfmt, base_path, '64M')
35 iotests.log('=== Launch VM ===')
36 vm.add_object('iothread,id=iothread0')
37 vm.add_blockdev('file,filename=%s,node-name=base-file' % (base_path))
38 vm.add_blockdev('%s,file=base-file,node-name=base-fmt' % (iotests.imgfmt))
39 vm.add_device('virtio-blk,drive=base-fmt,iothread=iothread0,id=vda')
42 vm.enable_migration_events('VM')
44 iotests.log('\n=== Migrate to file ===')
45 vm.qmp_log('migrate', uri='exec:cat > /dev/null')
47 with iotests.Timeout(3, 'Migration does not complete'):
48 vm.wait_migration('postmigrate')
50 iotests.log('\nVM is now stopped:')
51 iotests.log(vm.qmp('query-migrate')['return']['status'])
52 vm.qmp_log('query-status')
54 iotests.log('\n=== Create a snapshot of the disk image ===')
60 vm.qmp_log('blockdev-add', node_name='top-file',
61 driver='file', filename=top_path,
62 filters=[iotests.filter_qmp_testfiles])
65 'driver': iotests.imgfmt,
69 vm.qmp_log('blockdev-add', node_name='top-fmt',
70 driver=iotests.imgfmt, file='top-file')
72 vm.qmp_log('blockdev-snapshot', node='base-fmt', overlay='top-fmt')
74 iotests.log('\n=== Resume the VM and simulate a write request ===')
76 iotests.log(vm.hmp_qemu_io('-d vda/virtio-backend', 'write 4k 4k'))
78 iotests.log('\n=== Commit it to the backing file ===')
79 result = vm.qmp_log('block-commit', job_id='job0', auto_dismiss=False,
80 device='top-fmt', top_node='top-fmt',
81 filters=[iotests.filter_qmp_testfiles])
82 if 'return' in result: