tests/qemu-iotests/246

   1 #!/usr/bin/env python3
   2 # group: rw quick
   3 #
   4 # Test persistent bitmap resizing.
   5 #
   6 # Copyright (c) 2019 John Snow for Red Hat, Inc.
   7 #
   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.
  12 #
  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.
  17 #
  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/>.
  20 #
  21 # owner=jsnow@redhat.com
  22
  23 import iotests
  24 from iotests import log
  25
  26 iotests.script_initialize(supported_fmts=['qcow2'],
  27                           unsupported_imgopts=['compat'])
  28 size = 64 * 1024 * 1024 * 1024
  29 gran_small = 32 * 1024
  30 gran_large = 128 * 1024
  31
  32 def query_bitmaps(vm):
  33     res = vm.qmp("query-block")
  34     return { "bitmaps": { device['device']: device.get('inserted', {})
  35                           .get('dirty-bitmaps', []) for
  36                           device in res['return'] } }
  37
  38 with iotests.FilePath('img') as img_path, \
  39      iotests.VM() as vm:
  40
  41     log('--- Preparing image & VM ---\n')
  42     iotests.qemu_img_create('-f', iotests.imgfmt, img_path, str(size))
  43     vm.add_drive(img_path)
  44
  45
  46     log('--- 1st Boot (Establish Baseline Image) ---\n')
  47     vm.launch()
  48
  49     log('\n--- Adding bitmaps Small, Medium, Large, and Transient ---\n')
  50     vm.qmp_log("block-dirty-bitmap-add", node="drive0",
  51                name="Small", granularity=gran_small, persistent=True)
  52     vm.qmp_log("block-dirty-bitmap-add", node="drive0",
  53                name="Medium", persistent=True)
  54     vm.qmp_log("block-dirty-bitmap-add", node="drive0",
  55                name="Large", granularity=gran_large, persistent=True)
  56     vm.qmp_log("block-dirty-bitmap-add", node="drive0",
  57                name="Transient", persistent=False)
  58
  59     log('--- Forcing flush of bitmaps to disk ---\n')
  60     log(query_bitmaps(vm), indent=2)
  61     vm.shutdown()
  62
  63
  64     log('--- 2nd Boot (Grow Image) ---\n')
  65     vm.launch()
  66     log(query_bitmaps(vm), indent=2)
  67
  68     log('--- Adding new bitmap, growing image, and adding 2nd new bitmap ---')
  69     vm.qmp_log("block-dirty-bitmap-add", node="drive0",
  70                name="New", persistent=True)
  71     vm.qmp_log("human-monitor-command",
  72                command_line="block_resize drive0 70G")
  73     vm.qmp_log("block-dirty-bitmap-add", node="drive0",
  74                name="Newtwo", persistent=True)
  75     log(query_bitmaps(vm), indent=2)
  76
  77     log('--- Forcing flush of bitmaps to disk ---\n')
  78     vm.shutdown()
  79
  80
  81     log('--- 3rd Boot (Shrink Image) ---\n')
  82     vm.launch()
  83     log(query_bitmaps(vm), indent=2)
  84
  85     log('--- Adding "NewB" bitmap, removing "New" bitmap ---')
  86     vm.qmp_log("block-dirty-bitmap-add", node="drive0",
  87                name="NewB", persistent=True)
  88     vm.qmp_log("block-dirty-bitmap-remove", node="drive0",
  89                name="New")
  90
  91     log('--- Truncating image ---\n')
  92     vm.qmp_log("human-monitor-command",
  93                command_line="block_resize drive0 50G")
  94
  95     log('--- Adding "NewC" bitmap, removing "NewTwo" bitmap ---')
  96     vm.qmp_log("block-dirty-bitmap-add", node="drive0",
  97                name="NewC", persistent=True)
  98     vm.qmp_log("block-dirty-bitmap-remove", node="drive0", name="Newtwo")
  99
 100     log('--- Forcing flush of bitmaps to disk ---\n')
 101     vm.shutdown()
 102
 103
 104     log('--- 4th Boot (Verification and Cleanup) ---\n')
 105     vm.launch()
 106     log(query_bitmaps(vm), indent=2)
 107
 108     log('--- Removing all Bitmaps ---\n')
 109     vm.qmp_log("block-dirty-bitmap-remove", node="drive0", name="Small")
 110     vm.qmp_log("block-dirty-bitmap-remove", node="drive0", name="Medium")
 111     vm.qmp_log("block-dirty-bitmap-remove", node="drive0", name="Large")
 112     vm.qmp_log("block-dirty-bitmap-remove", node="drive0", name="NewB")
 113     vm.qmp_log("block-dirty-bitmap-remove", node="drive0", name="NewC")
 114     log(query_bitmaps(vm), indent=2)
 115
 116     log('\n--- Done ---')
 117     vm.shutdown()