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1 | #!/usr/bin/env python |
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 | ||
23 | import iotests | |
24 | import os | |
25 | ||
26 | iotests.verify_image_format(supported_fmts=['qcow2']) | |
27 | iotests.verify_platform(['linux']) | |
28 | ||
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29 | def enable_migration_events(vm, name): |
30 | iotests.log('Enabling migration QMP events on %s...' % name) | |
31 | iotests.log(vm.qmp('migrate-set-capabilities', capabilities=[ | |
32 | { | |
33 | 'capability': 'events', | |
34 | 'state': True | |
35 | } | |
36 | ])) | |
37 | ||
38 | def wait_migration(vm): | |
39 | while True: | |
40 | event = vm.event_wait('MIGRATION') | |
41 | iotests.log(event, filters=[iotests.filter_qmp_event]) | |
42 | if event['data']['status'] == 'completed': | |
43 | break | |
44 | ||
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45 | with iotests.FilePath('img') as img_path, \ |
46 | iotests.FilePath('backing') as backing_path, \ | |
47 | iotests.FilePath('mig_fifo_a') as fifo_a, \ | |
48 | iotests.FilePath('mig_fifo_b') as fifo_b, \ | |
49 | iotests.VM(path_suffix='a') as vm_a, \ | |
50 | iotests.VM(path_suffix='b') as vm_b: | |
51 | ||
52 | iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, backing_path, '64M') | |
53 | iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, img_path, '64M') | |
54 | ||
55 | os.mkfifo(fifo_a) | |
56 | os.mkfifo(fifo_b) | |
57 | ||
58 | iotests.log('Launching source VM...') | |
59 | (vm_a.add_blockdev('file,filename=%s,node-name=drive0-file' % (img_path)) | |
60 | .add_blockdev('%s,file=drive0-file,node-name=drive0' % (iotests.imgfmt)) | |
61 | .add_blockdev('file,filename=%s,node-name=drive0-backing-file' % (backing_path)) | |
62 | .add_blockdev('%s,file=drive0-backing-file,node-name=drive0-backing' % (iotests.imgfmt)) | |
63 | .launch()) | |
64 | ||
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65 | enable_migration_events(vm_a, 'A') |
66 | ||
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67 | iotests.log('Launching destination VM...') |
68 | (vm_b.add_blockdev('file,filename=%s,node-name=drive0-file' % (img_path)) | |
69 | .add_blockdev('%s,file=drive0-file,node-name=drive0' % (iotests.imgfmt)) | |
70 | .add_blockdev('file,filename=%s,node-name=drive0-backing-file' % (backing_path)) | |
71 | .add_blockdev('%s,file=drive0-backing-file,node-name=drive0-backing' % (iotests.imgfmt)) | |
72 | .add_incoming("exec: cat '%s'" % (fifo_a)) | |
73 | .launch()) | |
74 | ||
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75 | enable_migration_events(vm_b, 'B') |
76 | ||
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77 | # Add a child node that was created after the parent node. The reverse case |
78 | # is covered by the -blockdev options above. | |
79 | iotests.log(vm_a.qmp('blockdev-snapshot', node='drive0-backing', | |
80 | overlay='drive0')) | |
81 | iotests.log(vm_b.qmp('blockdev-snapshot', node='drive0-backing', | |
82 | overlay='drive0')) | |
83 | ||
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84 | iotests.log('Starting migration to B...') |
85 | iotests.log(vm_a.qmp('migrate', uri='exec:cat >%s' % (fifo_a))) | |
86 | with iotests.Timeout(3, 'Migration does not complete'): | |
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87 | # Wait for the source first (which includes setup=setup) |
88 | wait_migration(vm_a) | |
89 | # Wait for the destination second (which does not) | |
90 | wait_migration(vm_b) | |
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91 | |
92 | iotests.log(vm_a.qmp('query-migrate')['return']['status']) | |
93 | iotests.log(vm_b.qmp('query-migrate')['return']['status']) | |
94 | ||
95 | iotests.log(vm_a.qmp('query-status')) | |
96 | iotests.log(vm_b.qmp('query-status')) | |
97 | ||
98 | iotests.log('Add a second parent to drive0-file...') | |
99 | iotests.log(vm_b.qmp('blockdev-add', driver='raw', file='drive0-file', | |
100 | node_name='drive0-raw')) | |
101 | ||
102 | iotests.log('Restart A with -incoming and second parent...') | |
103 | vm_a.shutdown() | |
104 | (vm_a.add_blockdev('raw,file=drive0-file,node-name=drive0-raw') | |
105 | .add_incoming("exec: cat '%s'" % (fifo_b)) | |
106 | .launch()) | |
107 | ||
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108 | enable_migration_events(vm_a, 'A') |
109 | ||
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110 | iotests.log(vm_a.qmp('blockdev-snapshot', node='drive0-backing', |
111 | overlay='drive0')) | |
112 | ||
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113 | iotests.log('Starting migration back to A...') |
114 | iotests.log(vm_b.qmp('migrate', uri='exec:cat >%s' % (fifo_b))) | |
115 | with iotests.Timeout(3, 'Migration does not complete'): | |
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116 | # Wait for the source first (which includes setup=setup) |
117 | wait_migration(vm_b) | |
118 | # Wait for the destination second (which does not) | |
119 | wait_migration(vm_a) | |
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120 | |
121 | iotests.log(vm_a.qmp('query-migrate')['return']['status']) | |
122 | iotests.log(vm_b.qmp('query-migrate')['return']['status']) | |
123 | ||
124 | iotests.log(vm_a.qmp('query-status')) | |
125 | iotests.log(vm_b.qmp('query-status')) |