xref: /qemu/tests/qemu-iotests/262 (revision a81df1b6) 
1#!/usr/bin/env python3
2#
3# Copyright (C) 2019 Red Hat, Inc.
4#
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.
9#
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.
14#
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/>.
17#
18# Creator/Owner: Kevin Wolf <kwolf@redhat.com>
19#
20# Test migration with filter drivers present. Keep everything in an
21# iothread just for fun.
22
23import iotests
24import os
25
26iotests.script_initialize(supported_fmts=['qcow2'],
27                          supported_platforms=['linux'])
28
29with iotests.FilePath('img') as img_path, \
30     iotests.FilePath('mig_fifo') as fifo, \
31     iotests.VM(path_suffix='a') as vm_a, \
32     iotests.VM(path_suffix='b') as vm_b:
33
34    def add_opts(vm):
35        vm.add_object('iothread,id=iothread0')
36        vm.add_object('throttle-group,id=tg0,x-bps-total=65536')
37        vm.add_blockdev('file,filename=%s,node-name=drive0-file' % (img_path))
38        vm.add_blockdev('%s,file=drive0-file,node-name=drive0-fmt' % (iotests.imgfmt))
39        vm.add_blockdev('copy-on-read,file=drive0-fmt,node-name=drive0-cor')
40        vm.add_blockdev('throttle,file=drive0-cor,node-name=drive0-throttle,throttle-group=tg0')
41        vm.add_blockdev('blkdebug,image=drive0-throttle,node-name=drive0-dbg')
42        vm.add_blockdev('null-co,node-name=null,read-zeroes=on')
43        vm.add_blockdev('blkverify,test=drive0-dbg,raw=null,node-name=drive0-verify')
44
45        if iotests.supports_quorum():
46            vm.add_blockdev('quorum,children.0=drive0-verify,vote-threshold=1,node-name=drive0-quorum')
47            root = "drive0-quorum"
48        else:
49            root = "drive0-verify"
50
51        vm.add_device('virtio-blk,drive=%s,iothread=iothread0' % root)
52
53    iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, img_path, '64M')
54
55    os.mkfifo(fifo)
56
57    iotests.log('Launching destination VM...')
58    add_opts(vm_b)
59    vm_b.add_incoming("exec: cat '%s'" % (fifo))
60    vm_b.launch()
61
62    vm_b.enable_migration_events('B')
63
64    iotests.log('Launching source VM...')
65    add_opts(vm_a)
66    vm_a.launch()
67
68    vm_a.enable_migration_events('A')
69
70    iotests.log('Starting migration to B...')
71    iotests.log(vm_a.qmp('migrate', uri='exec:cat >%s' % (fifo)))
72    with iotests.Timeout(3, 'Migration does not complete'):
73        # Wait for the source first (which includes setup=setup)
74        vm_a.wait_migration('postmigrate')
75        # Wait for the destination second (which does not)
76        vm_b.wait_migration('running')
77
78    iotests.log(vm_a.qmp('query-migrate')['return']['status'])
79    iotests.log(vm_b.qmp('query-migrate')['return']['status'])
80
81    iotests.log(vm_a.qmp('query-status'))
82    iotests.log(vm_b.qmp('query-status'))
83