#!/usr/bin/env python3 # group: rw quick migration # # Copyright (C) 2019 Red Hat, Inc. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. # # Creator/Owner: Kevin Wolf <kwolf@redhat.com> # # Test migration with filter drivers present. Keep everything in an # iothread just for fun. import iotests import os iotests.script_initialize(supported_fmts=['qcow2'], supported_platforms=['linux'], required_fmts=['blkverify']) with iotests.FilePath('img') as img_path, \ iotests.FilePath('mig_fifo') as fifo, \ iotests.VM(path_suffix='a') as vm_a, \ iotests.VM(path_suffix='b') as vm_b: def add_opts(vm): vm.add_object('iothread,id=iothread0') vm.add_object('throttle-group,id=tg0,x-bps-total=65536') vm.add_blockdev('file,filename=%s,node-name=drive0-file' % (img_path)) vm.add_blockdev('%s,file=drive0-file,node-name=drive0-fmt' % (iotests.imgfmt)) vm.add_blockdev('copy-on-read,file=drive0-fmt,node-name=drive0-cor') vm.add_blockdev('throttle,file=drive0-cor,node-name=drive0-throttle,throttle-group=tg0') vm.add_blockdev('blkdebug,image=drive0-throttle,node-name=drive0-dbg') vm.add_blockdev('null-co,node-name=null,read-zeroes=on') vm.add_blockdev('blkverify,test=drive0-dbg,raw=null,node-name=drive0-verify') if iotests.supports_quorum(): vm.add_blockdev('quorum,children.0=drive0-verify,vote-threshold=1,node-name=drive0-quorum') root = "drive0-quorum" else: root = "drive0-verify" vm.add_device('virtio-blk,drive=%s,iothread=iothread0' % root) iotests.qemu_img_create('-f', iotests.imgfmt, img_path, '64M') os.mkfifo(fifo) iotests.log('Launching destination VM...') add_opts(vm_b) vm_b.add_incoming("exec: cat '%s'" % (fifo)) vm_b.launch() vm_b.enable_migration_events('B') iotests.log('Launching source VM...') add_opts(vm_a) vm_a.launch() vm_a.enable_migration_events('A') iotests.log('Starting migration to B...') iotests.log(vm_a.qmp('migrate', uri='exec:cat >%s' % (fifo))) with iotests.Timeout(3, 'Migration does not complete'): # Wait for the source first (which includes setup=setup) vm_a.wait_migration('postmigrate') # Wait for the destination second (which does not) vm_b.wait_migration('running') iotests.log(vm_a.qmp('query-migrate')['return']['status']) iotests.log(vm_b.qmp('query-migrate')['return']['status']) iotests.log(vm_a.qmp('query-status')) iotests.log(vm_b.qmp('query-status'))