def _start_compute_service(self, hostname):
fake_connection = self._get_connection(
# Need a host to support creating more servers with vpmems
host_info=fakelibvirt.HostInfo(cpu_nodes=2, cpu_sockets=1,
cpu_cores=2, cpu_threads=2,
kB_mem=15740000),
hostname=hostname)
self.mock_conn.return_value = fake_connection
compute = self._start_compute(host=hostname)
# Ensure populating the existing pmems correctly.
vpmems = compute.driver._vpmems_by_name
expected_vpmems = {
'ns_0': objects.LibvirtVPMEMDevice(
label='4GB', name='ns_0', devpath='/dev/dax0.0',
size=4292870144, align=2097152),
'ns_1': objects.LibvirtVPMEMDevice(
label='SMALL', name='ns_1', devpath='/dev/dax0.1',
size=4292870144, align=2097152),
'ns_2': objects.LibvirtVPMEMDevice(
label='SMALL', name='ns_2', devpath='/dev/dax0.2',
size=4292870144, align=2097152)}
self.assertDictEqual(expected_vpmems, vpmems)
# Ensure reporting vpmems resources correctly
rp_uuid = self._get_provider_uuid_by_host(compute.host)
inventory = self._get_provider_inventory(rp_uuid)
self.assertEqual(1, inventory['CUSTOM_PMEM_NAMESPACE_4GB']['total'])
self.assertEqual(2, inventory['CUSTOM_PMEM_NAMESPACE_SMALL']['total'])
return compute
def test_check_can_migrate_specific_resources(self):
"""Test _check_can_migrate_specific_resources allows live migration
with vpmem.
"""
@mock.patch.object(live_migrate, 'supports_vpmem_live_migration')
def _test(resources, supp_lm_vpmem_retval, mock_support_lm_vpmem):
self.instance.resources = resources
mock_support_lm_vpmem.return_value = supp_lm_vpmem_retval
self.task._check_can_migrate_specific_resources()
vpmem_0 = objects.LibvirtVPMEMDevice(
label='4GB', name='ns_0', devpath='/dev/dax0.0',
size=4292870144, align=2097152)
resource_0 = objects.Resource(
provider_uuid=uuids.rp,
resource_class="CUSTOM_PMEM_NAMESPACE_4GB",
identifier='ns_0', metadata=vpmem_0)
resources = objects.ResourceList(
objects=[resource_0])
_test(None, False)
_test(None, True)
_test(resources, True)
self.assertRaises(exception.MigrationPreCheckError,
_test, resources, False)
def test_check_can_migrate_specific_resources(self):
vpmem_0 = objects.LibvirtVPMEMDevice(label='4GB',
name='ns_0',
devpath='/dev/dax0.0',
size=4292870144,
align=2097152)
resource_0 = objects.Resource(
provider_uuid=uuids.rp,
resource_class="CUSTOM_PMEM_NAMESPACE_4GB",
identifier='ns_0',
metadata=vpmem_0)
self.instance.resources = objects.ResourceList(objects=[resource_0])
self.assertRaises(exception.MigrationPreCheckError,
self.task._check_can_migrate_specific_resources)