tests/acceptance/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 Test
  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(Test):
  23
  24     timeout = 10
  25
  26     @staticmethod
  27     def migration_finished(vm):
  28         return vm.command('query-migrate')['status'] in ('completed', 'failed')
  29
  30     def assert_migration(self, src_vm, dst_vm):
  31         wait.wait_for(self.migration_finished,
  32                       timeout=self.timeout,
  33                       step=0.1,
  34                       args=(src_vm,))
  35         self.assertEqual(src_vm.command('query-migrate')['status'], 'completed')
  36         self.assertEqual(dst_vm.command('query-migrate')['status'], 'completed')
  37         self.assertEqual(dst_vm.command('query-status')['status'], 'running')
  38         self.assertEqual(src_vm.command('query-status')['status'],'postmigrate')
  39
  40     def do_migrate(self, dest_uri, src_uri=None):
  41         source_vm = self.get_vm()
  42         dest_vm = self.get_vm('-incoming', dest_uri)
  43         dest_vm.launch()
  44         if src_uri is None:
  45             src_uri = dest_uri
  46         source_vm.launch()
  47         source_vm.qmp('migrate', uri=src_uri)
  48         self.assert_migration(source_vm, dest_vm)
  49
  50     def _get_free_port(self):
  51         port = network.find_free_port()
  52         if port is None:
  53             self.cancel('Failed to find a free port')
  54         return port
  55
  56
  57     def test_migration_with_tcp_localhost(self):
  58         dest_uri = 'tcp:localhost:%u' % self._get_free_port()
  59         self.do_migrate(dest_uri)
  60
  61     def test_migration_with_unix(self):
  62         with tempfile.TemporaryDirectory(prefix='socket_') as socket_path:
  63             dest_uri = 'unix:%s/qemu-test.sock' % socket_path
  64             self.do_migrate(dest_uri)
  65
  66     @skipUnless(find_command('nc', default=False), "'nc' command not found")
  67     def test_migration_with_exec(self):
  68         """
  69         The test works for both netcat-traditional and netcat-openbsd packages
  70         """
  71         free_port = self._get_free_port()
  72         dest_uri = 'exec:nc -l localhost %u' % free_port