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 24import iotests 25from iotests import imgfmt 26 27iotests.script_initialize(supported_fmts=['qcow2']) 28 29iotests.log('Finishing a commit job with background reads') 30iotests.log('============================================') 31iotests.log('') 32 33with iotests.FilePath('t.qcow2') as disk_path, \ 34 iotests.FilePath('t.qcow2.mid') as mid_path, \ 35 iotests.FilePath('t.qcow2.base') as base_path, \ 36 iotests.VM() as vm: 37 38 iotests.log("=== Create backing chain and start VM ===") 39 iotests.log("") 40 41 size = 128 * 1024 * 1024 42 size_str = str(size) 43 44 iotests.create_image(base_path, size) 45 iotests.qemu_img_create('-f', iotests.imgfmt, mid_path, size_str) 46 iotests.qemu_img_create('-f', iotests.imgfmt, disk_path, size_str) 47 48 # Create a backing chain like this: 49 # base <- [throttled: bps-read=4096] <- mid <- overlay 50 51 vm.add_object('throttle-group,x-bps-read=4096,id=throttle0') 52 vm.add_blockdev('file,filename=%s,node-name=base' % (base_path)) 53 vm.add_blockdev('throttle,throttle-group=throttle0,file=base,node-name=throttled') 54 vm.add_blockdev('file,filename=%s,node-name=mid-file' % (mid_path)) 55 vm.add_blockdev('qcow2,file=mid-file,node-name=mid,backing=throttled') 56 vm.add_drive_raw('if=none,id=overlay,driver=qcow2,file=%s,backing=mid' % (disk_path)) 57 58 vm.launch() 59 60 iotests.log("=== Start background read requests ===") 61 iotests.log("") 62 63 def start_requests(): 64 vm.hmp_qemu_io('overlay', 'aio_read 0 4k') 65 vm.hmp_qemu_io('overlay', 'aio_read 0 4k') 66 67 start_requests() 68 69 iotests.log("=== Run a commit job ===") 70 iotests.log("") 71 72 result = vm.qmp_log('block-commit', job_id='job0', auto_finalize=False, 73 device='overlay', top_node='mid') 74 75 vm.run_job('job0', auto_finalize=False, pre_finalize=start_requests, 76 auto_dismiss=True) 77 78 vm.shutdown() 79 80iotests.log('') 81iotests.log('Closing the VM while a job is being cancelled') 82iotests.log('=============================================') 83iotests.log('') 84 85with iotests.FilePath('src.qcow2') as src_path, \ 86 iotests.FilePath('dst.qcow2') as dst_path, \ 87 iotests.VM() as vm: 88 89 iotests.log('=== Create images and start VM ===') 90 iotests.log('') 91 92 size = 128 * 1024 * 1024 93 size_str = str(size) 94 95 iotests.qemu_img_create('-f', iotests.imgfmt, src_path, size_str) 96 iotests.qemu_img_create('-f', iotests.imgfmt, dst_path, size_str) 97 98 iotests.qemu_io_log('-f', iotests.imgfmt, '-c', 'write 0 1M', src_path), 99 100 vm.add_object('throttle-group,x-bps-read=4096,id=throttle0') 101 102 vm.add_blockdev('file,node-name=src-file,filename=%s' % (src_path)) 103 vm.add_blockdev('%s,node-name=src,file=src-file' % (iotests.imgfmt)) 104 105 vm.add_blockdev('file,node-name=dst-file,filename=%s' % (dst_path)) 106 vm.add_blockdev('%s,node-name=dst,file=dst-file' % (iotests.imgfmt)) 107 108 vm.add_blockdev('throttle,node-name=src-throttled,' + 109 'throttle-group=throttle0,file=src') 110 111 vm.add_device('virtio-blk,drive=src-throttled') 112 113 vm.launch() 114 115 iotests.log('=== Start a mirror job ===') 116 iotests.log('') 117 118 vm.qmp_log('blockdev-mirror', job_id='job0', device='src-throttled', 119 target='dst', sync='full') 120 121 vm.qmp_log('block-job-cancel', device='job0') 122 vm.qmp_log('quit') 123 124 vm.shutdown() 125