3 # Test persistent bitmap resizing.
5 # Copyright (c) 2019 John Snow for Red Hat, Inc.
7 # This program is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 2 of the License, or
10 # (at your option) any later version.
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
20 # owner=jsnow@redhat.com
23 from iotests import log
25 iotests.script_initialize(supported_fmts=['qcow2'])
26 size = 64 * 1024 * 1024 * 1024
27 gran_small = 32 * 1024
28 gran_large = 128 * 1024
30 def query_bitmaps(vm):
31 res = vm.qmp("query-block")
32 return { "bitmaps": { device['device']: device.get('dirty-bitmaps', []) for
33 device in res['return'] } }
35 with iotests.FilePath('img') as img_path, \
38 log('--- Preparing image & VM ---\n')
39 iotests.qemu_img_create('-f', iotests.imgfmt, img_path, str(size))
40 vm.add_drive(img_path)
43 log('--- 1st Boot (Establish Baseline Image) ---\n')
46 log('\n--- Adding bitmaps Small, Medium, Large, and Transient ---\n')
47 vm.qmp_log("block-dirty-bitmap-add", node="drive0",
48 name="Small", granularity=gran_small, persistent=True)
49 vm.qmp_log("block-dirty-bitmap-add", node="drive0",
50 name="Medium", persistent=True)
51 vm.qmp_log("block-dirty-bitmap-add", node="drive0",
52 name="Large", granularity=gran_large, persistent=True)
53 vm.qmp_log("block-dirty-bitmap-add", node="drive0",
54 name="Transient", persistent=False)
56 log('--- Forcing flush of bitmaps to disk ---\n')
57 log(query_bitmaps(vm), indent=2)
61 log('--- 2nd Boot (Grow Image) ---\n')
63 log(query_bitmaps(vm), indent=2)
65 log('--- Adding new bitmap, growing image, and adding 2nd new bitmap ---')
66 vm.qmp_log("block-dirty-bitmap-add", node="drive0",
67 name="New", persistent=True)
68 vm.qmp_log("human-monitor-command",
69 command_line="block_resize drive0 70G")
70 vm.qmp_log("block-dirty-bitmap-add", node="drive0",
71 name="Newtwo", persistent=True)
72 log(query_bitmaps(vm), indent=2)
74 log('--- Forcing flush of bitmaps to disk ---\n')
78 log('--- 3rd Boot (Shrink Image) ---\n')
80 log(query_bitmaps(vm), indent=2)
82 log('--- Adding "NewB" bitmap, removing "New" bitmap ---')
83 vm.qmp_log("block-dirty-bitmap-add", node="drive0",
84 name="NewB", persistent=True)
85 vm.qmp_log("block-dirty-bitmap-remove", node="drive0",
88 log('--- Truncating image ---\n')
89 vm.qmp_log("human-monitor-command",
90 command_line="block_resize drive0 50G")
92 log('--- Adding "NewC" bitmap, removing "NewTwo" bitmap ---')
93 vm.qmp_log("block-dirty-bitmap-add", node="drive0",
94 name="NewC", persistent=True)
95 vm.qmp_log("block-dirty-bitmap-remove", node="drive0", name="Newtwo")
97 log('--- Forcing flush of bitmaps to disk ---\n')
101 log('--- 4th Boot (Verification and Cleanup) ---\n')
103 log(query_bitmaps(vm), indent=2)
105 log('--- Removing all Bitmaps ---\n')
106 vm.qmp_log("block-dirty-bitmap-remove", node="drive0", name="Small")
107 vm.qmp_log("block-dirty-bitmap-remove", node="drive0", name="Medium")
108 vm.qmp_log("block-dirty-bitmap-remove", node="drive0", name="Large")
109 vm.qmp_log("block-dirty-bitmap-remove", node="drive0", name="NewB")
110 vm.qmp_log("block-dirty-bitmap-remove", node="drive0", name="NewC")
111 log(query_bitmaps(vm), indent=2)
113 log('\n--- Done ---')