1#!/usr/bin/env python3 2# 3# Copyright (C) 2018 Red Hat, Inc. 4# 5# This program is free software; you can redistribute it and/or modify 6# it under the terms of the GNU General Public License as published by 7# the Free Software Foundation; either version 2 of the License, or 8# (at your option) any later version. 9# 10# This program is distributed in the hope that it will be useful, 11# but WITHOUT ANY WARRANTY; without even the implied warranty of 12# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13# GNU General Public License for more details. 14# 15# You should have received a copy of the GNU General Public License 16# along with this program. If not, see <http://www.gnu.org/licenses/>. 17# 18# Creator/Owner: Kevin Wolf <kwolf@redhat.com> 19# 20# Check that block node activation and inactivation works with a block graph 21# that is built with individually created nodes 22 23import iotests 24import os 25 26iotests.verify_image_format(supported_fmts=['qcow2']) 27iotests.verify_platform(['linux']) 28 29with iotests.FilePath('img') as img_path, \ 30 iotests.FilePath('backing') as backing_path, \ 31 iotests.FilePath('mig_fifo_a') as fifo_a, \ 32 iotests.FilePath('mig_fifo_b') as fifo_b, \ 33 iotests.VM(path_suffix='a') as vm_a, \ 34 iotests.VM(path_suffix='b') as vm_b: 35 36 iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, backing_path, '64M') 37 iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, img_path, '64M') 38 39 os.mkfifo(fifo_a) 40 os.mkfifo(fifo_b) 41 42 iotests.log('Launching source VM...') 43 (vm_a.add_blockdev('file,filename=%s,node-name=drive0-file' % (img_path)) 44 .add_blockdev('%s,file=drive0-file,node-name=drive0' % (iotests.imgfmt)) 45 .add_blockdev('file,filename=%s,node-name=drive0-backing-file' % (backing_path)) 46 .add_blockdev('%s,file=drive0-backing-file,node-name=drive0-backing' % (iotests.imgfmt)) 47 .launch()) 48 49 vm_a.enable_migration_events('A') 50 51 iotests.log('Launching destination VM...') 52 (vm_b.add_blockdev('file,filename=%s,node-name=drive0-file' % (img_path)) 53 .add_blockdev('%s,file=drive0-file,node-name=drive0' % (iotests.imgfmt)) 54 .add_blockdev('file,filename=%s,node-name=drive0-backing-file' % (backing_path)) 55 .add_blockdev('%s,file=drive0-backing-file,node-name=drive0-backing' % (iotests.imgfmt)) 56 .add_incoming("exec: cat '%s'" % (fifo_a)) 57 .launch()) 58 59 vm_b.enable_migration_events('B') 60 61 # Add a child node that was created after the parent node. The reverse case 62 # is covered by the -blockdev options above. 63 iotests.log(vm_a.qmp('blockdev-snapshot', node='drive0-backing', 64 overlay='drive0')) 65 iotests.log(vm_b.qmp('blockdev-snapshot', node='drive0-backing', 66 overlay='drive0')) 67 68 iotests.log('Starting migration to B...') 69 iotests.log(vm_a.qmp('migrate', uri='exec:cat >%s' % (fifo_a))) 70 with iotests.Timeout(3, 'Migration does not complete'): 71 # Wait for the source first (which includes setup=setup) 72 vm_a.wait_migration('postmigrate') 73 # Wait for the destination second (which does not) 74 vm_b.wait_migration('running') 75 76 iotests.log(vm_a.qmp('query-migrate')['return']['status']) 77 iotests.log(vm_b.qmp('query-migrate')['return']['status']) 78 79 iotests.log(vm_a.qmp('query-status')) 80 iotests.log(vm_b.qmp('query-status')) 81 82 iotests.log('Add a second parent to drive0-file...') 83 iotests.log(vm_b.qmp('blockdev-add', driver='raw', file='drive0-file', 84 node_name='drive0-raw')) 85 86 iotests.log('Restart A with -incoming and second parent...') 87 vm_a.shutdown() 88 (vm_a.add_blockdev('raw,file=drive0-file,node-name=drive0-raw') 89 .add_incoming("exec: cat '%s'" % (fifo_b)) 90 .launch()) 91 92 vm_a.enable_migration_events('A') 93 94 iotests.log(vm_a.qmp('blockdev-snapshot', node='drive0-backing', 95 overlay='drive0')) 96 97 iotests.log('Starting migration back to A...') 98 iotests.log(vm_b.qmp('migrate', uri='exec:cat >%s' % (fifo_b))) 99 with iotests.Timeout(3, 'Migration does not complete'): 100 # Wait for the source first (which includes setup=setup) 101 vm_b.wait_migration('postmigrate') 102 # Wait for the destination second (which does not) 103 vm_a.wait_migration('running') 104 105 iotests.log(vm_a.qmp('query-migrate')['return']['status']) 106 iotests.log(vm_b.qmp('query-migrate')['return']['status']) 107 108 iotests.log(vm_a.qmp('query-status')) 109 iotests.log(vm_b.qmp('query-status')) 110