262 (3156B)
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 24 import iotests 25 import os 26 27 iotests.script_initialize(supported_fmts=['qcow2'], 28 supported_platforms=['linux']) 29 30 with iotests.FilePath('img') as img_path, \ 31 iotests.FilePath('mig_fifo') as fifo, \ 32 iotests.VM(path_suffix='a') as vm_a, \ 33 iotests.VM(path_suffix='b') as vm_b: 34 35 def add_opts(vm): 36 vm.add_object('iothread,id=iothread0') 37 vm.add_object('throttle-group,id=tg0,x-bps-total=65536') 38 vm.add_blockdev('file,filename=%s,node-name=drive0-file' % (img_path)) 39 vm.add_blockdev('%s,file=drive0-file,node-name=drive0-fmt' % (iotests.imgfmt)) 40 vm.add_blockdev('copy-on-read,file=drive0-fmt,node-name=drive0-cor') 41 vm.add_blockdev('throttle,file=drive0-cor,node-name=drive0-throttle,throttle-group=tg0') 42 vm.add_blockdev('blkdebug,image=drive0-throttle,node-name=drive0-dbg') 43 vm.add_blockdev('null-co,node-name=null,read-zeroes=on') 44 vm.add_blockdev('blkverify,test=drive0-dbg,raw=null,node-name=drive0-verify') 45 46 if iotests.supports_quorum(): 47 vm.add_blockdev('quorum,children.0=drive0-verify,vote-threshold=1,node-name=drive0-quorum') 48 root = "drive0-quorum" 49 else: 50 root = "drive0-verify" 51 52 vm.add_device('virtio-blk,drive=%s,iothread=iothread0' % root) 53 54 iotests.qemu_img_create('-f', iotests.imgfmt, img_path, '64M') 55 56 os.mkfifo(fifo) 57 58 iotests.log('Launching destination VM...') 59 add_opts(vm_b) 60 vm_b.add_incoming("exec: cat '%s'" % (fifo)) 61 vm_b.launch() 62 63 vm_b.enable_migration_events('B') 64 65 iotests.log('Launching source VM...') 66 add_opts(vm_a) 67 vm_a.launch() 68 69 vm_a.enable_migration_events('A') 70 71 iotests.log('Starting migration to B...') 72 iotests.log(vm_a.qmp('migrate', uri='exec:cat >%s' % (fifo))) 73 with iotests.Timeout(3, 'Migration does not complete'): 74 # Wait for the source first (which includes setup=setup) 75 vm_a.wait_migration('postmigrate') 76 # Wait for the destination second (which does not) 77 vm_b.wait_migration('running') 78 79 iotests.log(vm_a.qmp('query-migrate')['return']['status']) 80 iotests.log(vm_b.qmp('query-migrate')['return']['status']) 81 82 iotests.log(vm_a.qmp('query-status')) 83 iotests.log(vm_b.qmp('query-status'))