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