tests/qemu-iotests/246

   1 #!/usr/bin/env python
   2 #
   3 # Test persistent bitmap resizing.
   4 #
   5 # Copyright (c) 2019 John Snow for Red Hat, Inc.
   6 #
   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.
  11 #
  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.
  16 #
  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/>.
  19 #
  20 # owner=jsnow@redhat.com
  21
  22 import iotests
  23 from iotests import log
  24
  25 iotests.verify_image_format(supported_fmts=['qcow2'])
  26 size = 64 * 1024 * 1024 * 1024
  27 gran_small = 32 * 1024
  28 gran_large = 128 * 1024
  29
  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'] } }
  34
  35 with iotests.FilePath('img') as img_path, \
  36      iotests.VM() as vm:
  37
  38     log('--- Preparing image & VM ---\n')
  39     iotests.qemu_img_create('-f', iotests.imgfmt, img_path, str(size))
  40     vm.add_drive(img_path)
  41
  42
  43     log('--- 1st Boot (Establish Baseline Image) ---\n')
  44     vm.launch()
  45
  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)
  55
  56     log('--- Forcing flush of bitmaps to disk ---\n')
  57     log(query_bitmaps(vm), indent=2)
  58     vm.shutdown()
  59
  60
  61     log('--- 2nd Boot (Grow Image) ---\n')
  62     vm.launch()
  63     log(query_bitmaps(vm), indent=2)
  64
  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)
  73
  74     log('--- Forcing flush of bitmaps to disk ---\n')
  75     vm.shutdown()
  76
  77
  78     log('--- 3rd Boot (Shrink Image) ---\n')
  79     vm.launch()
  80     log(query_bitmaps(vm), indent=2)
  81
  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",
  86                name="New")
  87
  88     log('--- Truncating image ---\n')
  89     vm.qmp_log("human-monitor-command",
  90                command_line="block_resize drive0 50G")
  91
  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")
  96
  97     log('--- Forcing flush of bitmaps to disk ---\n')
  98     vm.shutdown()
  99
 100
 101     log('--- 4th Boot (Verification and Cleanup) ---\n')
 102     vm.launch()
 103     log(query_bitmaps(vm), indent=2)
 104
 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)
 112
 113     log('\n--- Done ---')
 114     vm.shutdown()