xref: /openbmc/qemu/tests/qemu-iotests/262 (revision 8c6631e6) 
1#!/usr/bin/env python3
2# group: rw quick migration
3#
4# Copyright (C) 2019 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: Kevin Wolf <kwolf@redhat.com>
20#
21# Test migration with filter drivers present. Keep everything in an
22# iothread just for fun.
23
24import iotests
25import os
26
27iotests.script_initialize(supported_fmts=['qcow2'],
28                          supported_platforms=['linux'],
29                          required_fmts=['blkverify'])
30
31with iotests.FilePath('img') as img_path, \
32     iotests.FilePath('mig_fifo') as fifo, \
33     iotests.VM(path_suffix='a') as vm_a, \
34     iotests.VM(path_suffix='b') as vm_b:
35
36    def add_opts(vm):
37        vm.add_object('iothread,id=iothread0')
38        vm.add_object('throttle-group,id=tg0,x-bps-total=65536')
39        vm.add_blockdev('file,filename=%s,node-name=drive0-file' % (img_path))
40        vm.add_blockdev('%s,file=drive0-file,node-name=drive0-fmt' % (iotests.imgfmt))
41        vm.add_blockdev('copy-on-read,file=drive0-fmt,node-name=drive0-cor')
42        vm.add_blockdev('throttle,file=drive0-cor,node-name=drive0-throttle,throttle-group=tg0')
43        vm.add_blockdev('blkdebug,image=drive0-throttle,node-name=drive0-dbg')
44        vm.add_blockdev('null-co,node-name=null,read-zeroes=on')
45        vm.add_blockdev('blkverify,test=drive0-dbg,raw=null,node-name=drive0-verify')
46
47        if iotests.supports_quorum():
48            vm.add_blockdev('quorum,children.0=drive0-verify,vote-threshold=1,node-name=drive0-quorum')
49            root = "drive0-quorum"
50        else:
51            root = "drive0-verify"
52
53        vm.add_device('virtio-blk,drive=%s,iothread=iothread0' % root)
54
55    iotests.qemu_img_create('-f', iotests.imgfmt, img_path, '64M')
56
57    os.mkfifo(fifo)
58
59    iotests.log('Launching destination VM...')
60    add_opts(vm_b)
61    vm_b.add_incoming("exec: cat '%s'" % (fifo))
62    vm_b.launch()
63
64    vm_b.enable_migration_events('B')
65
66    iotests.log('Launching source VM...')
67    add_opts(vm_a)
68    vm_a.launch()
69
70    vm_a.enable_migration_events('A')
71
72    iotests.log('Starting migration to B...')
73    iotests.log(vm_a.qmp('migrate', uri='exec:cat >%s' % (fifo)))
74    with iotests.Timeout(3, 'Migration does not complete'):
75        # Wait for the source first (which includes setup=setup)
76        vm_a.wait_migration('postmigrate')
77        # Wait for the destination second (which does not)
78        vm_b.wait_migration('running')
79
80    iotests.log(vm_a.qmp('query-migrate')['return']['status'])
81    iotests.log(vm_b.qmp('query-migrate')['return']['status'])
82
83    iotests.log(vm_a.qmp('query-status'))
84    iotests.log(vm_b.qmp('query-status'))
85