| 1 | #!/usr/bin/env python3 |
| 2 | # group: rw quick |
| 3 | # |
| 4 | # Test json:{} filenames with qemu-internal BDSs |
| 5 | # (the one of commit, to be precise) |
| 6 | # |
| 7 | # Copyright (C) 2018 Red Hat, Inc. |
| 8 | # |
| 9 | # This program is free software; you can redistribute it and/or modify |
| 10 | # it under the terms of the GNU General Public License as published by |
| 11 | # the Free Software Foundation; either version 2 of the License, or |
| 12 | # (at your option) any later version. |
| 13 | # |
| 14 | # This program is distributed in the hope that it will be useful, |
| 15 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | # GNU General Public License for more details. |
| 18 | # |
| 19 | # You should have received a copy of the GNU General Public License |
| 20 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 21 | # |
| 22 | # Creator/Owner: Hanna Reitz <hreitz@redhat.com> |
| 23 | |
| 24 | import iotests |
| 25 | from iotests import log, qemu_img, qemu_io, filter_qmp_testfiles, \ |
| 26 | filter_qmp_imgfmt |
| 27 | import json |
| 28 | |
| 29 | # Need backing file support (for arbitrary backing formats) |
| 30 | iotests.script_initialize(supported_fmts=['qcow2', 'qcow', 'qed'], |
| 31 | supported_platforms=['linux']) |
| 32 | |
| 33 | |
| 34 | # There are two variations of this test: |
| 35 | # (1) We do not set filter_node_name. In that case, the commit_top |
| 36 | # driver should not appear anywhere. |
| 37 | # (2) We do set filter_node_name. In that case, it should appear. |
| 38 | # |
| 39 | # This for loop executes both. |
| 40 | for filter_node_name in False, True: |
| 41 | log('') |
| 42 | log('--- filter_node_name: %s ---' % filter_node_name) |
| 43 | log('') |
| 44 | |
| 45 | with iotests.FilePath('base.img') as base_img_path, \ |
| 46 | iotests.FilePath('mid.img') as mid_img_path, \ |
| 47 | iotests.FilePath('top.img') as top_img_path, \ |
| 48 | iotests.VM() as vm: |
| 49 | |
| 50 | qemu_img('create', '-f', iotests.imgfmt, base_img_path, '64M') |
| 51 | qemu_img('create', '-f', iotests.imgfmt, '-b', base_img_path, |
| 52 | '-F', iotests.imgfmt, mid_img_path) |
| 53 | qemu_img('create', '-f', iotests.imgfmt, '-b', mid_img_path, |
| 54 | '-F', iotests.imgfmt, top_img_path) |
| 55 | |
| 56 | # Something to commit |
| 57 | qemu_io(mid_img_path, '-c', 'write -P 1 0 1M') |
| 58 | |
| 59 | vm.launch() |
| 60 | |
| 61 | # Change the bottom-most image's backing file (to null-co://) |
| 62 | # to enforce json:{} filenames |
| 63 | vm.qmp_log('blockdev-add', |
| 64 | node_name='top', |
| 65 | driver=iotests.imgfmt, |
| 66 | file={ |
| 67 | 'driver': 'file', |
| 68 | 'filename': top_img_path |
| 69 | }, |
| 70 | backing={ |
| 71 | 'node-name': 'mid', |
| 72 | 'driver': iotests.imgfmt, |
| 73 | 'file': { |
| 74 | 'driver': 'file', |
| 75 | 'filename': mid_img_path |
| 76 | }, |
| 77 | 'backing': { |
| 78 | 'node-name': 'base', |
| 79 | 'driver': iotests.imgfmt, |
| 80 | 'file': { |
| 81 | 'driver': 'file', |
| 82 | 'filename': base_img_path |
| 83 | }, |
| 84 | 'backing': { |
| 85 | 'driver': 'null-co' |
| 86 | } |
| 87 | } |
| 88 | }, |
| 89 | filters=[filter_qmp_testfiles, filter_qmp_imgfmt]) |
| 90 | |
| 91 | # As long as block-commit does not accept node names, we have to |
| 92 | # get our mid/base filenames here |
| 93 | mid_name = vm.node_info('mid')['image']['filename'] |
| 94 | base_name = vm.node_info('base')['image']['filename'] |
| 95 | |
| 96 | assert mid_name[:5] == 'json:' |
| 97 | assert base_name[:5] == 'json:' |
| 98 | |
| 99 | # Start the block job |
| 100 | if filter_node_name: |
| 101 | vm.qmp_log('block-commit', |
| 102 | job_id='commit', |
| 103 | device='top', |
| 104 | filter_node_name='filter_node', |
| 105 | top=mid_name, |
| 106 | base=base_name, |
| 107 | speed=1, |
| 108 | filters=[filter_qmp_testfiles, filter_qmp_imgfmt]) |
| 109 | else: |
| 110 | vm.qmp_log('block-commit', |
| 111 | job_id='commit', |
| 112 | device='top', |
| 113 | top=mid_name, |
| 114 | base=base_name, |
| 115 | speed=1, |
| 116 | filters=[filter_qmp_testfiles, filter_qmp_imgfmt]) |
| 117 | |
| 118 | vm.qmp_log('job-pause', id='commit') |
| 119 | |
| 120 | # Get and parse top's json:{} filename |
| 121 | top_name = vm.node_info('top')['image']['filename'] |
| 122 | |
| 123 | vm.shutdown() |
| 124 | |
| 125 | assert top_name[:5] == 'json:' |
| 126 | top_options = json.loads(top_name[5:]) |
| 127 | |
| 128 | if filter_node_name: |
| 129 | # This should be present and set |
| 130 | assert top_options['backing']['driver'] == 'commit_top' |
| 131 | # And the mid image is commit_top's backing image |
| 132 | mid_options = top_options['backing']['backing'] |
| 133 | else: |
| 134 | # The mid image should appear as the immediate backing BDS |
| 135 | # of top |
| 136 | mid_options = top_options['backing'] |
| 137 | |
| 138 | assert mid_options['driver'] == iotests.imgfmt |
| 139 | assert mid_options['file']['filename'] == mid_img_path |