tests/avocado/migration.py

   1 # Migration test
   2 #
   3 # Copyright (c) 2019 Red Hat, Inc.
   4 #
   5 # Authors:
   6 #  Cleber Rosa <crosa@redhat.com>
   7 #  Caio Carrara <ccarrara@redhat.com>
   8 #
   9 # This work is licensed under the terms of the GNU GPL, version 2 or
  10 # later.  See the COPYING file in the top-level directory.
  11
  12
  13 import tempfile
  14 from avocado_qemu import QemuSystemTest
  15 from avocado import skipUnless
  16
  17 from avocado.utils import network
  18 from avocado.utils import wait
  19 from avocado.utils.path import find_command
  20
  21
  22 class Migration(QemuSystemTest):
  23     """
  24     :avocado: tags=migration
  25     """
  26
  27     timeout = 10
  28
  29     @staticmethod
  30     def migration_finished(vm):
  31         return vm.command('query-migrate')['status'] in ('completed', 'failed')
  32
  33     def assert_migration(self, src_vm, dst_vm):
  34         wait.wait_for(self.migration_finished,
  35                       timeout=self.timeout,
  36                       step=0.1,
  37                       args=(src_vm,))
  38         wait.wait_for(self.migration_finished,
  39                       timeout=self.timeout,
  40                       step=0.1,
  41                       args=(dst_vm,))
  42         self.assertEqual(src_vm.command('query-migrate')['status'], 'completed')
  43         self.assertEqual(dst_vm.command('query-migrate')['status'], 'completed')
  44         self.assertEqual(dst_vm.command('query-status')['status'], 'running')
  45         self.assertEqual(src_vm.command('query-status')['status'],'postmigrate')
  46
  47     def do_migrate(self, dest_uri, src_uri=None):
  48         dest_vm = self.get_vm('-incoming', dest_uri)
  49         dest_vm.add_args('-nodefaults')
  50         dest_vm.launch()
  51         if src_uri is None:
  52             src_uri = dest_uri
  53         source_vm = self.get_vm()
  54         source_vm.add_args('-nodefaults')
  55         source_vm.launch()
  56         source_vm.qmp('migrate', uri=src_uri)
  57         self.assert_migration(source_vm, dest_vm)
  58
  59     def _get_free_port(self):
  60         port = network.find_free_port()
  61         if port is None:
  62             self.cancel('Failed to find a free port')
  63         return port
  64
  65
  66     def test_migration_with_tcp_localhost(self):
  67         dest_uri = 'tcp:localhost:%u' % self._get_free_port()
  68         self.do_migrate(dest_uri)
  69
  70     def test_migration_with_unix(self):
  71         with tempfile.TemporaryDirectory(prefix='socket_') as socket_path:
  72             dest_uri = 'unix:%s/qemu-test.sock' % socket_path
  73             self.do_migrate(dest_uri)
  74
  75     @skipUnless(find_command('nc', default=False), "'nc' command not found")
  76     def test_migration_with_exec(self):
  77         """The test works for both netcat-traditional and netcat-openbsd packages."""
  78         free_port = self._get_free_port()
  79         dest_uri = 'exec:nc -l localhost %u' % free_port
  80         src_uri = 'exec:nc localhost %u' % free_port
  81         self.do_migrate(dest_uri, src_uri)