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 22import iotests 23from iotests import log 24 25iotests.verify_image_format(supported_fmts=['qcow2']) 26size = 64 * 1024 * 1024 * 1024 27gran_small = 32 * 1024 28gran_large = 128 * 1024 29 30def 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 35with 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() 115