LXR qemu/tests/qemu-iotests/235

   1#!/usr/bin/env python3
   2# group: quick
   3#
   4# Simple mirror test
   5#
   6# Copyright (c) 2018 Virtuozzo International GmbH. All rights reserved.
   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
  22import sys
  23import os
  24import iotests
  25from iotests import qemu_img_create, qemu_io, file_path, log
  26
  27from qemu.machine import QEMUMachine
  28
  29iotests.script_initialize(supported_fmts=['qcow2'])
  30
  31# Note:
  32# This test was added to check that mirror dead-lock was fixed (see previous
  33# commit before this test addition).
  34# And it didn't reproduce if at least one of the following:
  35# 1. use small image size
  36# 2. use raw format (not qcow2)
  37# 3. drop kvm and use iotests.VM() (maybe, because of qtest) (however, it still
  38#    reproduces, if just drop kvm, but gdb failed to produce full backtraces
  39#    for me)
  40# 4. add iothread
  41
  42size = 1 * 1024 * 1024 * 1024
  43
  44disk = file_path('disk')
  45
  46# prepare source image
  47qemu_img_create('-f', iotests.imgfmt, '-o', 'preallocation=metadata', disk,
  48                str(size))
  49
  50vm = QEMUMachine(iotests.qemu_prog)
  51vm.add_args('-accel', 'kvm', '-accel', 'tcg')
  52if iotests.qemu_default_machine == 's390-ccw-virtio':
  53        vm.add_args('-no-shutdown')
  54vm.add_args('-drive', 'id=src,file=' + disk)
  55vm.launch()
  56
  57log(vm.qmp('object-add', qom_type='throttle-group', id='tg0',
  58           limits={'bps-total': size}))
  59
  60log(vm.qmp('blockdev-add',
  61           **{ 'node-name': 'target',
  62               'driver': 'throttle',
  63               'throttle-group': 'tg0',
  64               'file': {
  65                   'driver': 'null-co',
  66                   'size': size
  67                } }))
  68
  69log(vm.qmp('blockdev-mirror', device='src', target='target', sync='full'))
  70
  71try:
  72    vm.event_wait('BLOCK_JOB_READY', timeout=10.0)
  73except:
  74    vm.shutdown()
  75    raise
  76
  77vm.shutdown()
  78