1#!/usr/bin/env python3
2# group: quick
3#
4# Simple mirror test
5#
6# Copyright (c) 2018 Virtuozzo International GmbH. All rights reserved.
7#
8# This program is free software; you can redistribute it and/or modify
9# it under the terms of the GNU General Public License as published by
10# the Free Software Foundation; either version 2 of the License, or
11# (at your option) any later version.
12#
13# This program is distributed in the hope that it will be useful,
14# but WITHOUT ANY WARRANTY; without even the implied warranty of
15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16# GNU General Public License for more details.
17#
18# You should have received a copy of the GNU General Public License
19# along with this program.  If not, see <http://www.gnu.org/licenses/>.
20#
21
22import sys
23import os
24import iotests
25from iotests import qemu_img_create, qemu_io, file_path, log
26
27from qemu.machine import QEMUMachine
28
29iotests.script_initialize(supported_fmts=['qcow2'])
30
31# Note:
32# This test was added to check that mirror dead-lock was fixed (see previous
33# commit before this test addition).
34# And it didn't reproduce if at least one of the following:
35# 1. use small image size
36# 2. use raw format (not qcow2)
37# 3. drop kvm and use iotests.VM() (maybe, because of qtest) (however, it still
38#    reproduces, if just drop kvm, but gdb failed to produce full backtraces
39#    for me)
40# 4. add iothread
41
42size = 1 * 1024 * 1024 * 1024
43
44disk = file_path('disk')
45
46# prepare source image
47qemu_img_create('-f', iotests.imgfmt, '-o', 'preallocation=metadata', disk,
48                str(size))
49
50vm = QEMUMachine(iotests.qemu_prog)
51vm.add_args('-accel', 'kvm', '-accel', 'tcg')
52if iotests.qemu_default_machine == 's390-ccw-virtio':
53        vm.add_args('-no-shutdown')
54vm.add_args('-drive', 'id=src,file=' + disk)
55vm.launch()
56
57log(vm.qmp('object-add', qom_type='throttle-group', id='tg0',
58           limits={'bps-total': size}))
59
60log(vm.qmp('blockdev-add',
61           **{ 'node-name': 'target',
62               'driver': 'throttle',
63               'throttle-group': 'tg0',
64               'file': {
65                   'driver': 'null-co',
66                   'size': size
67                } }))
68
69log(vm.qmp('blockdev-mirror', device='src', target='target', sync='full'))
70
71try:
72    vm.event_wait('BLOCK_JOB_READY', timeout=10.0)
73except:
74    vm.shutdown()
75    raise
76
77vm.shutdown()
78