| 1 | #!/usr/bin/env python3 |
| 2 | # group: rw quick |
| 3 | # |
| 4 | # Test commit job graph modifications while requests are active |
| 5 | # |
| 6 | # Copyright (C) 2019 Red Hat, Inc. |
| 7 | # |
| 8 | # Creator/Owner: Kevin Wolf <kwolf@redhat.com> |
| 9 | # |
| 10 | # This program is free software; you can redistribute it and/or modify |
| 11 | # it under the terms of the GNU General Public License as published by |
| 12 | # the Free Software Foundation; either version 2 of the License, or |
| 13 | # (at your option) any later version. |
| 14 | # |
| 15 | # This program is distributed in the hope that it will be useful, |
| 16 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | # GNU General Public License for more details. |
| 19 | # |
| 20 | # You should have received a copy of the GNU General Public License |
| 21 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 22 | # |
| 23 | |
| 24 | import iotests |
| 25 | from iotests import imgfmt |
| 26 | |
| 27 | iotests.script_initialize(supported_fmts=['qcow2'], |
| 28 | require_hmp=True) |
| 29 | |
| 30 | iotests.log('Finishing a commit job with background reads') |
| 31 | iotests.log('============================================') |
| 32 | iotests.log('') |
| 33 | |
| 34 | with iotests.FilePath('t.qcow2') as disk_path, \ |
| 35 | iotests.FilePath('t.qcow2.mid') as mid_path, \ |
| 36 | iotests.FilePath('t.qcow2.base') as base_path, \ |
| 37 | iotests.VM() as vm: |
| 38 | |
| 39 | iotests.log("=== Create backing chain and start VM ===") |
| 40 | iotests.log("") |
| 41 | |
| 42 | size = 128 * 1024 * 1024 |
| 43 | size_str = str(size) |
| 44 | |
| 45 | iotests.create_image(base_path, size) |
| 46 | iotests.qemu_img_create('-f', iotests.imgfmt, mid_path, size_str) |
| 47 | iotests.qemu_img_create('-f', iotests.imgfmt, disk_path, size_str) |
| 48 | |
| 49 | # Create a backing chain like this: |
| 50 | # base <- [throttled: bps-read=4096] <- mid <- overlay |
| 51 | |
| 52 | vm.add_object('throttle-group,x-bps-read=4096,id=throttle0') |
| 53 | vm.add_blockdev('file,filename=%s,node-name=base' % (base_path)) |
| 54 | vm.add_blockdev('throttle,throttle-group=throttle0,file=base,node-name=throttled') |
| 55 | vm.add_blockdev('file,filename=%s,node-name=mid-file' % (mid_path)) |
| 56 | vm.add_blockdev('qcow2,file=mid-file,node-name=mid,backing=throttled') |
| 57 | vm.add_drive_raw('if=none,id=overlay,driver=qcow2,file=%s,backing=mid' % (disk_path)) |
| 58 | |
| 59 | vm.launch() |
| 60 | |
| 61 | iotests.log("=== Start background read requests ===") |
| 62 | iotests.log("") |
| 63 | |
| 64 | def start_requests(): |
| 65 | vm.hmp_qemu_io('overlay', 'aio_read 0 4k') |
| 66 | vm.hmp_qemu_io('overlay', 'aio_read 0 4k') |
| 67 | |
| 68 | start_requests() |
| 69 | |
| 70 | iotests.log("=== Run a commit job ===") |
| 71 | iotests.log("") |
| 72 | |
| 73 | result = vm.qmp_log('block-commit', job_id='job0', auto_finalize=False, |
| 74 | device='overlay', top_node='mid') |
| 75 | |
| 76 | vm.run_job('job0', auto_finalize=False, pre_finalize=start_requests, |
| 77 | auto_dismiss=True) |
| 78 | |
| 79 | vm.shutdown() |
| 80 | |
| 81 | iotests.log('') |
| 82 | iotests.log('Closing the VM while a job is being cancelled') |
| 83 | iotests.log('=============================================') |
| 84 | iotests.log('') |
| 85 | |
| 86 | with iotests.FilePath('src.qcow2') as src_path, \ |
| 87 | iotests.FilePath('dst.qcow2') as dst_path, \ |
| 88 | iotests.VM() as vm: |
| 89 | |
| 90 | iotests.log('=== Create images and start VM ===') |
| 91 | iotests.log('') |
| 92 | |
| 93 | size = 128 * 1024 * 1024 |
| 94 | size_str = str(size) |
| 95 | |
| 96 | iotests.qemu_img_create('-f', iotests.imgfmt, src_path, size_str) |
| 97 | iotests.qemu_img_create('-f', iotests.imgfmt, dst_path, size_str) |
| 98 | |
| 99 | iotests.qemu_io_log('-f', iotests.imgfmt, '-c', 'write 0 1M', src_path), |
| 100 | |
| 101 | vm.add_object('throttle-group,x-bps-read=4096,id=throttle0') |
| 102 | |
| 103 | vm.add_blockdev('file,node-name=src-file,filename=%s' % (src_path)) |
| 104 | vm.add_blockdev('%s,node-name=src,file=src-file' % (iotests.imgfmt)) |
| 105 | |
| 106 | vm.add_blockdev('file,node-name=dst-file,filename=%s' % (dst_path)) |
| 107 | vm.add_blockdev('%s,node-name=dst,file=dst-file' % (iotests.imgfmt)) |
| 108 | |
| 109 | vm.add_blockdev('throttle,node-name=src-throttled,' + |
| 110 | 'throttle-group=throttle0,file=src') |
| 111 | |
| 112 | vm.add_device('virtio-blk,drive=src-throttled') |
| 113 | |
| 114 | vm.launch() |
| 115 | |
| 116 | iotests.log('=== Start a mirror job ===') |
| 117 | iotests.log('') |
| 118 | |
| 119 | vm.qmp_log('blockdev-mirror', job_id='job0', device='src-throttled', |
| 120 | target='dst', sync='full') |
| 121 | |
| 122 | vm.qmp_log('block-job-cancel', device='job0') |
| 123 | vm.qmp_log('quit') |
| 124 | |
| 125 | vm.shutdown() |