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# Migration test
#
# Copyright (c) 2019 Red Hat, Inc.
#
# Authors:
# Cleber Rosa <crosa@redhat.com>
# Caio Carrara <ccarrara@redhat.com>
#
# This work is licensed under the terms of the GNU GPL, version 2 or
# later. See the COPYING file in the top-level directory.
import tempfile
from avocado_qemu import QemuSystemTest
from avocado import skipUnless
from avocado.utils import network
from avocado.utils import wait
from avocado.utils.path import find_command
class Migration(QemuSystemTest):
"""
:avocado: tags=migration
"""
timeout = 10
@staticmethod
def migration_finished(vm):
return vm.command('query-migrate')['status'] in ('completed', 'failed')
def assert_migration(self, src_vm, dst_vm):
wait.wait_for(self.migration_finished,
timeout=self.timeout,
step=0.1,
args=(src_vm,))
wait.wait_for(self.migration_finished,
timeout=self.timeout,
step=0.1,
args=(dst_vm,))
self.assertEqual(src_vm.command('query-migrate')['status'], 'completed')
self.assertEqual(dst_vm.command('query-migrate')['status'], 'completed')
self.assertEqual(dst_vm.command('query-status')['status'], 'running')
self.assertEqual(src_vm.command('query-status')['status'],'postmigrate')
def do_migrate(self, dest_uri, src_uri=None):
dest_vm = self.get_vm('-incoming', dest_uri)
dest_vm.add_args('-nodefaults')
dest_vm.launch()
if src_uri is None:
src_uri = dest_uri
source_vm = self.get_vm()
source_vm.add_args('-nodefaults')
source_vm.launch()
source_vm.qmp('migrate', uri=src_uri)
self.assert_migration(source_vm, dest_vm)
def _get_free_port(self):
port = network.find_free_port()
if port is None:
self.cancel('Failed to find a free port')
return port
def test_migration_with_tcp_localhost(self):
dest_uri = 'tcp:localhost:%u' % self._get_free_port()
self.do_migrate(dest_uri)
def test_migration_with_unix(self):
with tempfile.TemporaryDirectory(prefix='socket_') as socket_path:
dest_uri = 'unix:%s/qemu-test.sock' % socket_path
self.do_migrate(dest_uri)
@skipUnless(find_command('nc', default=False), "'nc' command not found")
def test_migration_with_exec(self):
"""The test works for both netcat-traditional and netcat-openbsd packages."""
free_port = self._get_free_port()
dest_uri = 'exec:nc -l localhost %u' % free_port
src_uri = 'exec:nc localhost %u' % free_port
self.do_migrate(dest_uri, src_uri)
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