tests/qemu-iotests/262

   1 #!/usr/bin/env python3
   2 # group: rw quick migration
   3 #
   4 # Copyright (C) 2019 Red Hat, Inc.
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 2 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 #
  19 # Creator/Owner: Kevin Wolf <kwolf@redhat.com>
  20 #
  21 # Test migration with filter drivers present. Keep everything in an
  22 # iothread just for fun.
  23
  24 import iotests
  25 import os
  26
  27 iotests.script_initialize(supported_fmts=['qcow2'],
  28                           supported_platforms=['linux'],
  29                           required_fmts=['blkverify'])
  30
  31 with iotests.FilePath('img') as img_path, \
  32      iotests.FilePath('mig_fifo') as fifo, \
  33      iotests.VM(path_suffix='a') as vm_a, \
  34      iotests.VM(path_suffix='b') as vm_b:
  35
  36     def add_opts(vm):
  37         vm.add_object('iothread,id=iothread0')
  38         vm.add_object('throttle-group,id=tg0,x-bps-total=65536')
  39         vm.add_blockdev('file,filename=%s,node-name=drive0-file' % (img_path))
  40         vm.add_blockdev('%s,file=drive0-file,node-name=drive0-fmt' % (iotests.imgfmt))
  41         vm.add_blockdev('copy-on-read,file=drive0-fmt,node-name=drive0-cor')
  42         vm.add_blockdev('throttle,file=drive0-cor,node-name=drive0-throttle,throttle-group=tg0')
  43         vm.add_blockdev('blkdebug,image=drive0-throttle,node-name=drive0-dbg')
  44         vm.add_blockdev('null-co,node-name=null,read-zeroes=on')
  45         vm.add_blockdev('blkverify,test=drive0-dbg,raw=null,node-name=drive0-verify')
  46
  47         if iotests.supports_quorum():
  48             vm.add_blockdev('quorum,children.0=drive0-verify,vote-threshold=1,node-name=drive0-quorum')
  49             root = "drive0-quorum"
  50         else:
  51             root = "drive0-verify"
  52
  53         vm.add_device('virtio-blk,drive=%s,iothread=iothread0' % root)
  54
  55     iotests.qemu_img_create('-f', iotests.imgfmt, img_path, '64M')
  56
  57     os.mkfifo(fifo)
  58
  59     iotests.log('Launching destination VM...')
  60     add_opts(vm_b)
  61     vm_b.add_incoming("exec: cat '%s'" % (fifo))
  62     vm_b.launch()
  63
  64     vm_b.enable_migration_events('B')
  65
  66     iotests.log('Launching source VM...')
  67     add_opts(vm_a)
  68     vm_a.launch()
  69
  70     vm_a.enable_migration_events('A')
  71
  72     iotests.log('Starting migration to B...')
  73     iotests.log(vm_a.qmp('migrate', uri='exec:cat >%s' % (fifo)))
  74     with iotests.Timeout(3, 'Migration does not complete'):
  75         # Wait for the source first (which includes setup=setup)
  76         vm_a.wait_migration('postmigrate')
  77         # Wait for the destination second (which does not)
  78         vm_b.wait_migration('running')
  79
  80     iotests.log(vm_a.qmp('query-migrate')['return']['status'])
  81     iotests.log(vm_b.qmp('query-migrate')['return']['status'])
  82
  83     iotests.log(vm_a.qmp('query-status'))
  84     iotests.log(vm_b.qmp('query-status'))