| 1 | #!/usr/bin/env python3 |
| 2 | # group: quick migration |
| 3 | # |
| 4 | # Copyright (C) 2018 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 | # Check that block node activation and inactivation works with a block graph |
| 22 | # that is built with individually created nodes |
| 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('backing') as backing_path, \ |
| 32 | iotests.FilePath('mig_fifo_a') as fifo_a, \ |
| 33 | iotests.FilePath('mig_fifo_b') as fifo_b, \ |
| 34 | iotests.VM(path_suffix='a') as vm_a, \ |
| 35 | iotests.VM(path_suffix='b') as vm_b: |
| 36 | |
| 37 | iotests.qemu_img_create('-f', iotests.imgfmt, backing_path, '64M') |
| 38 | iotests.qemu_img_create('-f', iotests.imgfmt, img_path, '64M') |
| 39 | |
| 40 | os.mkfifo(fifo_a) |
| 41 | os.mkfifo(fifo_b) |
| 42 | |
| 43 | iotests.log('Launching source VM...') |
| 44 | (vm_a.add_blockdev('file,filename=%s,node-name=drive0-file' % (img_path)) |
| 45 | .add_blockdev('%s,file=drive0-file,node-name=drive0' % (iotests.imgfmt)) |
| 46 | .add_blockdev('file,filename=%s,node-name=drive0-backing-file' % (backing_path)) |
| 47 | .add_blockdev('%s,file=drive0-backing-file,node-name=drive0-backing' % (iotests.imgfmt)) |
| 48 | .launch()) |
| 49 | |
| 50 | vm_a.enable_migration_events('A') |
| 51 | |
| 52 | iotests.log('Launching destination VM...') |
| 53 | (vm_b.add_blockdev('file,filename=%s,node-name=drive0-file' % (img_path)) |
| 54 | .add_blockdev('%s,file=drive0-file,node-name=drive0' % (iotests.imgfmt)) |
| 55 | .add_blockdev('file,filename=%s,node-name=drive0-backing-file' % (backing_path)) |
| 56 | .add_blockdev('%s,file=drive0-backing-file,node-name=drive0-backing' % (iotests.imgfmt)) |
| 57 | .add_incoming("exec: cat '%s'" % (fifo_a)) |
| 58 | .launch()) |
| 59 | |
| 60 | vm_b.enable_migration_events('B') |
| 61 | |
| 62 | # Add a child node that was created after the parent node. The reverse case |
| 63 | # is covered by the -blockdev options above. |
| 64 | iotests.log(vm_a.qmp('blockdev-snapshot', node='drive0-backing', |
| 65 | overlay='drive0')) |
| 66 | iotests.log(vm_b.qmp('blockdev-snapshot', node='drive0-backing', |
| 67 | overlay='drive0')) |
| 68 | |
| 69 | iotests.log('Starting migration to B...') |
| 70 | iotests.log(vm_a.qmp('migrate', uri='exec:cat >%s' % (fifo_a))) |
| 71 | with iotests.Timeout(3, 'Migration does not complete'): |
| 72 | # Wait for the source first (which includes setup=setup) |
| 73 | vm_a.wait_migration('postmigrate') |
| 74 | # Wait for the destination second (which does not) |
| 75 | vm_b.wait_migration('running') |
| 76 | |
| 77 | iotests.log(vm_a.qmp('query-migrate')['return']['status']) |
| 78 | iotests.log(vm_b.qmp('query-migrate')['return']['status']) |
| 79 | |
| 80 | iotests.log(vm_a.qmp('query-status')) |
| 81 | iotests.log(vm_b.qmp('query-status')) |
| 82 | |
| 83 | iotests.log('Add a second parent to drive0-file...') |
| 84 | iotests.log(vm_b.qmp('blockdev-add', driver='raw', file='drive0-file', |
| 85 | node_name='drive0-raw')) |
| 86 | |
| 87 | iotests.log('Restart A with -incoming and second parent...') |
| 88 | vm_a.shutdown() |
| 89 | (vm_a.add_blockdev('raw,file=drive0-file,node-name=drive0-raw') |
| 90 | .add_incoming("exec: cat '%s'" % (fifo_b)) |
| 91 | .launch()) |
| 92 | |
| 93 | vm_a.enable_migration_events('A') |
| 94 | |
| 95 | iotests.log(vm_a.qmp('blockdev-snapshot', node='drive0-backing', |
| 96 | overlay='drive0')) |
| 97 | |
| 98 | iotests.log('Starting migration back to A...') |
| 99 | iotests.log(vm_b.qmp('migrate', uri='exec:cat >%s' % (fifo_b))) |
| 100 | with iotests.Timeout(3, 'Migration does not complete'): |
| 101 | # Wait for the source first (which includes setup=setup) |
| 102 | vm_b.wait_migration('postmigrate') |
| 103 | # Wait for the destination second (which does not) |
| 104 | vm_a.wait_migration('running') |
| 105 | |
| 106 | iotests.log(vm_a.qmp('query-migrate')['return']['status']) |
| 107 | iotests.log(vm_b.qmp('query-migrate')['return']['status']) |
| 108 | |
| 109 | iotests.log(vm_a.qmp('query-status')) |
| 110 | iotests.log(vm_b.qmp('query-status')) |