| 1 | #!/usr/bin/env python3 |
| 2 | # group: rw quick |
| 3 | # |
| 4 | # This test covers what happens when a mirror block job is cancelled |
| 5 | # in various phases of its existence. |
| 6 | # |
| 7 | # Note that this test only checks the emitted events (i.e. |
| 8 | # BLOCK_JOB_COMPLETED vs. BLOCK_JOB_CANCELLED), it does not compare |
| 9 | # whether the target is in sync with the source when the |
| 10 | # BLOCK_JOB_COMPLETED event occurs. This is covered by other tests |
| 11 | # (such as 041). |
| 12 | # |
| 13 | # Copyright (C) 2018 Red Hat, Inc. |
| 14 | # |
| 15 | # This program is free software; you can redistribute it and/or modify |
| 16 | # it under the terms of the GNU General Public License as published by |
| 17 | # the Free Software Foundation; either version 2 of the License, or |
| 18 | # (at your option) any later version. |
| 19 | # |
| 20 | # This program is distributed in the hope that it will be useful, |
| 21 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 23 | # GNU General Public License for more details. |
| 24 | # |
| 25 | # You should have received a copy of the GNU General Public License |
| 26 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 27 | # |
| 28 | # Creator/Owner: Hanna Reitz <hreitz@redhat.com> |
| 29 | |
| 30 | import iotests |
| 31 | from iotests import log, qemu_img, qemu_io |
| 32 | |
| 33 | iotests.script_initialize(supported_fmts=['qcow2', 'raw']) |
| 34 | |
| 35 | |
| 36 | # Launches the VM, adds two null-co nodes (source and target), and |
| 37 | # starts a blockdev-mirror job on them. |
| 38 | # |
| 39 | # Either both or none of speed and buf_size must be given. |
| 40 | |
| 41 | def start_mirror(vm, speed=None, buf_size=None): |
| 42 | vm.launch() |
| 43 | |
| 44 | vm.cmd('blockdev-add', |
| 45 | node_name='source', |
| 46 | driver='null-co', |
| 47 | size=1048576) |
| 48 | |
| 49 | vm.cmd('blockdev-add', |
| 50 | node_name='target', |
| 51 | driver='null-co', |
| 52 | size=1048576) |
| 53 | |
| 54 | if speed is not None: |
| 55 | vm.cmd('blockdev-mirror', |
| 56 | job_id='mirror', |
| 57 | device='source', |
| 58 | target='target', |
| 59 | sync='full', |
| 60 | speed=speed, |
| 61 | buf_size=buf_size) |
| 62 | else: |
| 63 | vm.cmd('blockdev-mirror', |
| 64 | job_id='mirror', |
| 65 | device='source', |
| 66 | target='target', |
| 67 | sync='full') |
| 68 | |
| 69 | |
| 70 | log('') |
| 71 | log('=== Cancel mirror job before convergence ===') |
| 72 | log('') |
| 73 | |
| 74 | log('--- force=false ---') |
| 75 | log('') |
| 76 | |
| 77 | with iotests.VM() as vm: |
| 78 | # Low speed so it does not converge |
| 79 | start_mirror(vm, 65536, 65536) |
| 80 | |
| 81 | log('Cancelling job') |
| 82 | log(vm.qmp('block-job-cancel', device='mirror', force=False)) |
| 83 | |
| 84 | log(vm.event_wait('BLOCK_JOB_CANCELLED'), |
| 85 | filters=[iotests.filter_qmp_event]) |
| 86 | |
| 87 | log('') |
| 88 | log('--- force=true ---') |
| 89 | log('') |
| 90 | |
| 91 | with iotests.VM() as vm: |
| 92 | # Low speed so it does not converge |
| 93 | start_mirror(vm, 65536, 65536) |
| 94 | |
| 95 | log('Cancelling job') |
| 96 | log(vm.qmp('block-job-cancel', device='mirror', force=True)) |
| 97 | |
| 98 | log(vm.event_wait('BLOCK_JOB_CANCELLED'), |
| 99 | filters=[iotests.filter_qmp_event]) |
| 100 | |
| 101 | |
| 102 | log('') |
| 103 | log('=== Cancel mirror job after convergence ===') |
| 104 | log('') |
| 105 | |
| 106 | log('--- force=false ---') |
| 107 | log('') |
| 108 | |
| 109 | with iotests.VM() as vm: |
| 110 | start_mirror(vm) |
| 111 | |
| 112 | log(vm.event_wait('BLOCK_JOB_READY'), |
| 113 | filters=[iotests.filter_qmp_event]) |
| 114 | |
| 115 | log('Cancelling job') |
| 116 | log(vm.qmp('block-job-cancel', device='mirror', force=False)) |
| 117 | |
| 118 | log(vm.event_wait('BLOCK_JOB_COMPLETED'), |
| 119 | filters=[iotests.filter_qmp_event]) |
| 120 | |
| 121 | log('') |
| 122 | log('--- force=true ---') |
| 123 | log('') |
| 124 | |
| 125 | with iotests.VM() as vm: |
| 126 | start_mirror(vm) |
| 127 | |
| 128 | log(vm.event_wait('BLOCK_JOB_READY'), |
| 129 | filters=[iotests.filter_qmp_event]) |
| 130 | |
| 131 | log('Cancelling job') |
| 132 | log(vm.qmp('block-job-cancel', device='mirror', force=True)) |
| 133 | |
| 134 | log(vm.event_wait('BLOCK_JOB_CANCELLED'), |
| 135 | filters=[iotests.filter_qmp_event]) |
| 136 | |
| 137 | log('') |
| 138 | log('=== Cancel mirror job from throttled node by quitting ===') |
| 139 | log('') |
| 140 | |
| 141 | with iotests.VM() as vm, \ |
| 142 | iotests.FilePath('src.img') as src_img_path: |
| 143 | |
| 144 | qemu_img('create', '-f', iotests.imgfmt, src_img_path, '64M') |
| 145 | qemu_io('-f', iotests.imgfmt, src_img_path, '-c', 'write -P 42 0M 64M') |
| 146 | |
| 147 | vm.launch() |
| 148 | |
| 149 | vm.cmd('object-add', qom_type='throttle-group', id='tg', |
| 150 | limits={'bps-read': 4096}) |
| 151 | |
| 152 | vm.cmd('blockdev-add', |
| 153 | node_name='source', |
| 154 | driver=iotests.imgfmt, |
| 155 | file={ |
| 156 | 'driver': 'file', |
| 157 | 'filename': src_img_path |
| 158 | }) |
| 159 | |
| 160 | vm.cmd('blockdev-add', |
| 161 | node_name='throttled-source', |
| 162 | driver='throttle', |
| 163 | throttle_group='tg', |
| 164 | file='source') |
| 165 | |
| 166 | vm.cmd('blockdev-add', |
| 167 | node_name='target', |
| 168 | driver='null-co', |
| 169 | size=(64 * 1048576)) |
| 170 | |
| 171 | vm.cmd('blockdev-mirror', |
| 172 | job_id='mirror', |
| 173 | device='throttled-source', |
| 174 | target='target', |
| 175 | sync='full') |
| 176 | |
| 177 | log(vm.qmp('quit')) |
| 178 | |
| 179 | with iotests.Timeout(5, 'Timeout waiting for VM to quit'): |
| 180 | vm.shutdown() |