/
test_libvirt.py
1876 lines (1564 loc) · 76.9 KB
/
test_libvirt.py
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
#
# Copyright 2010 OpenStack LLC
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import copy
import eventlet
import mox
import os
import re
import shutil
import sys
import tempfile
from xml.etree.ElementTree import fromstring as xml_to_tree
from xml.dom.minidom import parseString as xml_to_dom
from nova import context
from nova import db
from nova import exception
from nova import flags
from nova import log as logging
from nova import test
from nova import utils
from nova.api.ec2 import cloud
from nova.compute import power_state
from nova.compute import vm_states
from nova.virt import disk
from nova.virt import images
from nova.virt import driver
from nova.virt.libvirt import connection
from nova.virt.libvirt import firewall
from nova.virt.libvirt import volume
from nova.volume import driver as volume_driver
from nova.virt.libvirt import utils as libvirt_utils
from nova.tests import fake_network
from nova.tests import fake_libvirt_utils
try:
import libvirt
connection.libvirt = libvirt
except ImportError:
libvirt = None
FLAGS = flags.FLAGS
LOG = logging.getLogger('nova.tests.test_libvirt')
_fake_network_info = fake_network.fake_get_instance_nw_info
_ipv4_like = fake_network.ipv4_like
def _concurrency(wait, done, target):
wait.wait()
done.send()
class FakeVirDomainSnapshot(object):
def __init__(self, dom=None):
self.dom = dom
def delete(self, flags):
pass
class FakeVirtDomain(object):
def __init__(self, fake_xml=None):
if fake_xml:
self._fake_dom_xml = fake_xml
else:
self._fake_dom_xml = """
<domain type='kvm'>
<devices>
<disk type='file'>
<source file='filename'/>
</disk>
</devices>
</domain>
"""
def snapshotCreateXML(self, *args):
return FakeVirDomainSnapshot(self)
def createWithFlags(self, launch_flags):
pass
def XMLDesc(self, *args):
return self._fake_dom_xml
class LibvirtVolumeTestCase(test.TestCase):
@staticmethod
def fake_execute(*cmd, **kwargs):
LOG.debug("FAKE EXECUTE: %s" % ' '.join(cmd))
return None, None
def setUp(self):
super(LibvirtVolumeTestCase, self).setUp()
self.stubs.Set(utils, 'execute', self.fake_execute)
class FakeLibvirtConnection(object):
def __init__(self, hyperv="QEMU"):
self.hyperv = hyperv
def get_hypervisor_type(self):
return self.hyperv
self.fake_conn = FakeLibvirtConnection("Xen")
def test_libvirt_iscsi_driver(self):
# NOTE(vish) exists is to make driver assume connecting worked
self.stubs.Set(os.path, 'exists', lambda x: True)
vol_driver = volume_driver.ISCSIDriver()
libvirt_driver = volume.LibvirtISCSIVolumeDriver(self.fake_conn)
name = 'volume-00000001'
vol = {'id': 1,
'name': name,
'provider_auth': None,
'provider_location': '10.0.2.15:3260,fake '
'iqn.2010-10.org.openstack:volume-00000001'}
address = '127.0.0.1'
connection_info = vol_driver.initialize_connection(vol, address)
mount_device = "vde"
xml = libvirt_driver.connect_volume(connection_info, mount_device)
tree = xml_to_tree(xml)
dev_str = '/dev/disk/by-path/ip-10.0.2.15:3260-iscsi-iqn.' \
'2010-10.org.openstack:%s-lun-0' % name
self.assertEqual(tree.get('type'), 'block')
self.assertEqual(tree.find('./source').get('dev'), dev_str)
libvirt_driver.disconnect_volume(connection_info, mount_device)
def test_libvirt_sheepdog_driver(self):
vol_driver = volume_driver.SheepdogDriver()
libvirt_driver = volume.LibvirtNetVolumeDriver(self.fake_conn)
name = 'volume-00000001'
vol = {'id': 1, 'name': name}
address = '127.0.0.1'
connection_info = vol_driver.initialize_connection(vol, address)
mount_device = "vde"
xml = libvirt_driver.connect_volume(connection_info, mount_device)
tree = xml_to_tree(xml)
self.assertEqual(tree.get('type'), 'network')
self.assertEqual(tree.find('./source').get('protocol'), 'sheepdog')
self.assertEqual(tree.find('./source').get('name'), name)
libvirt_driver.disconnect_volume(connection_info, mount_device)
def test_libvirt_rbd_driver(self):
vol_driver = volume_driver.RBDDriver()
libvirt_driver = volume.LibvirtNetVolumeDriver(self.fake_conn)
name = 'volume-00000001'
vol = {'id': 1, 'name': name}
address = '127.0.0.1'
connection_info = vol_driver.initialize_connection(vol, address)
mount_device = "vde"
xml = libvirt_driver.connect_volume(connection_info, mount_device)
tree = xml_to_tree(xml)
self.assertEqual(tree.get('type'), 'network')
self.assertEqual(tree.find('./source').get('protocol'), 'rbd')
rbd_name = '%s/%s' % (FLAGS.rbd_pool, name)
self.assertEqual(tree.find('./source').get('name'), rbd_name)
libvirt_driver.disconnect_volume(connection_info, mount_device)
class CacheConcurrencyTestCase(test.TestCase):
def setUp(self):
super(CacheConcurrencyTestCase, self).setUp()
self.flags(instances_path='nova.compute.manager')
def fake_exists(fname):
basedir = os.path.join(FLAGS.instances_path, '_base')
if fname == basedir:
return True
return False
def fake_execute(*args, **kwargs):
pass
self.stubs.Set(os.path, 'exists', fake_exists)
self.stubs.Set(utils, 'execute', fake_execute)
connection.libvirt_utils = fake_libvirt_utils
def tearDown(self):
connection.libvirt_utils = libvirt_utils
super(CacheConcurrencyTestCase, self).tearDown()
def test_same_fname_concurrency(self):
"""Ensures that the same fname cache runs at a sequentially"""
conn = connection.LibvirtConnection
wait1 = eventlet.event.Event()
done1 = eventlet.event.Event()
eventlet.spawn(conn._cache_image, _concurrency,
'target', 'fname', False, wait1, done1)
wait2 = eventlet.event.Event()
done2 = eventlet.event.Event()
eventlet.spawn(conn._cache_image, _concurrency,
'target', 'fname', False, wait2, done2)
wait2.send()
eventlet.sleep(0)
try:
self.assertFalse(done2.ready())
finally:
wait1.send()
done1.wait()
eventlet.sleep(0)
self.assertTrue(done2.ready())
def test_different_fname_concurrency(self):
"""Ensures that two different fname caches are concurrent"""
conn = connection.LibvirtConnection
wait1 = eventlet.event.Event()
done1 = eventlet.event.Event()
eventlet.spawn(conn._cache_image, _concurrency,
'target', 'fname2', False, wait1, done1)
wait2 = eventlet.event.Event()
done2 = eventlet.event.Event()
eventlet.spawn(conn._cache_image, _concurrency,
'target', 'fname1', False, wait2, done2)
wait2.send()
eventlet.sleep(0)
try:
self.assertTrue(done2.ready())
finally:
wait1.send()
eventlet.sleep(0)
class FakeVolumeDriver(object):
def __init__(self, *args, **kwargs):
pass
def attach_volume(self, *args):
pass
def detach_volume(self, *args):
pass
def get_xml(self, *args):
return ""
def missing_libvirt():
return libvirt is None
class LibvirtConnTestCase(test.TestCase):
def setUp(self):
super(LibvirtConnTestCase, self).setUp()
connection._late_load_cheetah()
self.flags(fake_call=True)
self.user_id = 'fake'
self.project_id = 'fake'
self.context = context.RequestContext(self.user_id, self.project_id)
self.network = utils.import_object(FLAGS.network_manager)
self.context = context.get_admin_context()
self.flags(instances_path='')
self.call_libvirt_dependant_setup = False
connection.libvirt_utils = fake_libvirt_utils
def tearDown(self):
connection.libvirt_utils = libvirt_utils
super(LibvirtConnTestCase, self).tearDown()
test_instance = {'memory_kb': '1024000',
'basepath': '/some/path',
'bridge_name': 'br100',
'vcpus': 2,
'project_id': 'fake',
'bridge': 'br101',
'image_ref': '155d900f-4e14-4e4c-a73d-069cbf4541e6',
'local_gb': 20,
'instance_type_id': '5'} # m1.small
def create_fake_libvirt_mock(self, **kwargs):
"""Defining mocks for LibvirtConnection(libvirt is not used)."""
# A fake libvirt.virConnect
class FakeLibvirtConnection(object):
def defineXML(self, xml):
return FakeVirtDomain()
# Creating mocks
volume_driver = 'iscsi=nova.tests.test_libvirt.FakeVolumeDriver'
self.flags(libvirt_volume_drivers=[volume_driver])
fake = FakeLibvirtConnection()
# Customizing above fake if necessary
for key, val in kwargs.items():
fake.__setattr__(key, val)
self.flags(image_service='nova.image.fake.FakeImageService')
self.flags(libvirt_vif_driver="nova.tests.fake_network.FakeVIFDriver")
self.mox.StubOutWithMock(connection.LibvirtConnection, '_conn')
connection.LibvirtConnection._conn = fake
def fake_lookup(self, instance_name):
return FakeVirtDomain()
def fake_execute(self, *args):
open(args[-1], "a").close()
def create_service(self, **kwargs):
service_ref = {'host': kwargs.get('host', 'dummy'),
'binary': 'nova-compute',
'topic': 'compute',
'report_count': 0,
'availability_zone': 'zone'}
return db.service_create(context.get_admin_context(), service_ref)
def test_preparing_xml_info(self):
conn = connection.LibvirtConnection(True)
instance_ref = db.instance_create(self.context, self.test_instance)
result = conn._prepare_xml_info(instance_ref,
_fake_network_info(self.stubs, 1),
False)
self.assertTrue(len(result['nics']) == 1)
result = conn._prepare_xml_info(instance_ref,
_fake_network_info(self.stubs, 2),
False)
self.assertTrue(len(result['nics']) == 2)
def test_xml_and_uri_no_ramdisk_no_kernel(self):
instance_data = dict(self.test_instance)
self._check_xml_and_uri(instance_data,
expect_kernel=False, expect_ramdisk=False)
def test_xml_and_uri_no_ramdisk(self):
instance_data = dict(self.test_instance)
instance_data['kernel_id'] = 'aki-deadbeef'
self._check_xml_and_uri(instance_data,
expect_kernel=True, expect_ramdisk=False)
def test_xml_and_uri_no_kernel(self):
instance_data = dict(self.test_instance)
instance_data['ramdisk_id'] = 'ari-deadbeef'
self._check_xml_and_uri(instance_data,
expect_kernel=False, expect_ramdisk=False)
def test_xml_and_uri(self):
instance_data = dict(self.test_instance)
instance_data['ramdisk_id'] = 'ari-deadbeef'
instance_data['kernel_id'] = 'aki-deadbeef'
self._check_xml_and_uri(instance_data,
expect_kernel=True, expect_ramdisk=True)
def test_xml_and_uri_rescue(self):
instance_data = dict(self.test_instance)
instance_data['ramdisk_id'] = 'ari-deadbeef'
instance_data['kernel_id'] = 'aki-deadbeef'
self._check_xml_and_uri(instance_data, expect_kernel=True,
expect_ramdisk=True, rescue=True)
def test_lxc_container_and_uri(self):
instance_data = dict(self.test_instance)
self._check_xml_and_container(instance_data)
def test_xml_disk_prefix(self):
instance_data = dict(self.test_instance)
self._check_xml_and_disk_prefix(instance_data)
@test.skip_if(missing_libvirt(), "Test requires libvirt")
def test_snapshot_in_ami_format(self):
self.flags(image_service='nova.image.fake.FakeImageService')
# Start test
image_service = utils.import_object(FLAGS.image_service)
# Assign different image_ref from nova/images/fakes for testing ami
test_instance = copy.deepcopy(self.test_instance)
test_instance["image_ref"] = 'c905cedb-7281-47e4-8a62-f26bc5fc4c77'
# Assuming that base image already exists in image_service
instance_ref = db.instance_create(self.context, test_instance)
properties = {'instance_id': instance_ref['id'],
'user_id': str(self.context.user_id)}
snapshot_name = 'test-snap'
sent_meta = {'name': snapshot_name, 'is_public': False,
'status': 'creating', 'properties': properties}
# Create new image. It will be updated in snapshot method
# To work with it from snapshot, the single image_service is needed
recv_meta = image_service.create(context, sent_meta)
self.mox.StubOutWithMock(connection.LibvirtConnection, '_conn')
connection.LibvirtConnection._conn.lookupByName = self.fake_lookup
self.mox.StubOutWithMock(connection.utils, 'execute')
connection.utils.execute = self.fake_execute
self.mox.ReplayAll()
conn = connection.LibvirtConnection(False)
conn.snapshot(self.context, instance_ref, recv_meta['id'])
snapshot = image_service.show(context, recv_meta['id'])
self.assertEquals(snapshot['properties']['image_state'], 'available')
self.assertEquals(snapshot['status'], 'active')
self.assertEquals(snapshot['disk_format'], 'ami')
self.assertEquals(snapshot['name'], snapshot_name)
@test.skip_if(missing_libvirt(), "Test requires libvirt")
def test_snapshot_in_raw_format(self):
self.flags(image_service='nova.image.fake.FakeImageService')
# Start test
image_service = utils.import_object(FLAGS.image_service)
# Assuming that base image already exists in image_service
instance_ref = db.instance_create(self.context, self.test_instance)
properties = {'instance_id': instance_ref['id'],
'user_id': str(self.context.user_id)}
snapshot_name = 'test-snap'
sent_meta = {'name': snapshot_name, 'is_public': False,
'status': 'creating', 'properties': properties}
# Create new image. It will be updated in snapshot method
# To work with it from snapshot, the single image_service is needed
recv_meta = image_service.create(context, sent_meta)
self.mox.StubOutWithMock(connection.LibvirtConnection, '_conn')
connection.LibvirtConnection._conn.lookupByName = self.fake_lookup
self.mox.StubOutWithMock(connection.utils, 'execute')
connection.utils.execute = self.fake_execute
self.mox.ReplayAll()
conn = connection.LibvirtConnection(False)
conn.snapshot(self.context, instance_ref, recv_meta['id'])
snapshot = image_service.show(context, recv_meta['id'])
self.assertEquals(snapshot['properties']['image_state'], 'available')
self.assertEquals(snapshot['status'], 'active')
self.assertEquals(snapshot['disk_format'], 'raw')
self.assertEquals(snapshot['name'], snapshot_name)
@test.skip_if(missing_libvirt(), "Test requires libvirt")
def test_snapshot_in_qcow2_format(self):
self.flags(image_service='nova.image.fake.FakeImageService')
self.flags(snapshot_image_format='qcow2')
# Start test
image_service = utils.import_object(FLAGS.image_service)
# Assuming that base image already exists in image_service
instance_ref = db.instance_create(self.context, self.test_instance)
properties = {'instance_id': instance_ref['id'],
'user_id': str(self.context.user_id)}
snapshot_name = 'test-snap'
sent_meta = {'name': snapshot_name, 'is_public': False,
'status': 'creating', 'properties': properties}
# Create new image. It will be updated in snapshot method
# To work with it from snapshot, the single image_service is needed
recv_meta = image_service.create(context, sent_meta)
self.mox.StubOutWithMock(connection.LibvirtConnection, '_conn')
connection.LibvirtConnection._conn.lookupByName = self.fake_lookup
self.mox.StubOutWithMock(connection.utils, 'execute')
connection.utils.execute = self.fake_execute
self.mox.ReplayAll()
conn = connection.LibvirtConnection(False)
conn.snapshot(self.context, instance_ref, recv_meta['id'])
snapshot = image_service.show(context, recv_meta['id'])
self.assertEquals(snapshot['properties']['image_state'], 'available')
self.assertEquals(snapshot['status'], 'active')
self.assertEquals(snapshot['disk_format'], 'qcow2')
self.assertEquals(snapshot['name'], snapshot_name)
@test.skip_if(missing_libvirt(), "Test requires libvirt")
def test_snapshot_no_image_architecture(self):
self.flags(image_service='nova.image.fake.FakeImageService')
# Start test
image_service = utils.import_object(FLAGS.image_service)
# Assign different image_ref from nova/images/fakes for
# testing different base image
test_instance = copy.deepcopy(self.test_instance)
test_instance["image_ref"] = '76fa36fc-c930-4bf3-8c8a-ea2a2420deb6'
# Assuming that base image already exists in image_service
instance_ref = db.instance_create(self.context, test_instance)
properties = {'instance_id': instance_ref['id'],
'user_id': str(self.context.user_id)}
snapshot_name = 'test-snap'
sent_meta = {'name': snapshot_name, 'is_public': False,
'status': 'creating', 'properties': properties}
# Create new image. It will be updated in snapshot method
# To work with it from snapshot, the single image_service is needed
recv_meta = image_service.create(context, sent_meta)
self.mox.StubOutWithMock(connection.LibvirtConnection, '_conn')
connection.LibvirtConnection._conn.lookupByName = self.fake_lookup
self.mox.StubOutWithMock(connection.utils, 'execute')
connection.utils.execute = self.fake_execute
self.mox.ReplayAll()
conn = connection.LibvirtConnection(False)
conn.snapshot(self.context, instance_ref, recv_meta['id'])
snapshot = image_service.show(context, recv_meta['id'])
self.assertEquals(snapshot['properties']['image_state'], 'available')
self.assertEquals(snapshot['status'], 'active')
self.assertEquals(snapshot['name'], snapshot_name)
def test_attach_invalid_volume_type(self):
self.create_fake_libvirt_mock()
connection.LibvirtConnection._conn.lookupByName = self.fake_lookup
self.mox.ReplayAll()
conn = connection.LibvirtConnection(False)
self.assertRaises(exception.VolumeDriverNotFound,
conn.attach_volume,
{"driver_volume_type": "badtype"},
"fake",
"/dev/fake")
def test_multi_nic(self):
instance_data = dict(self.test_instance)
network_info = _fake_network_info(self.stubs, 2)
conn = connection.LibvirtConnection(True)
instance_ref = db.instance_create(self.context, instance_data)
xml = conn.to_xml(instance_ref, network_info, False)
tree = xml_to_tree(xml)
interfaces = tree.findall("./devices/interface")
self.assertEquals(len(interfaces), 2)
parameters = interfaces[0].findall('./filterref/parameter')
self.assertEquals(interfaces[0].get('type'), 'bridge')
self.assertEquals(parameters[0].get('name'), 'IP')
self.assertTrue(_ipv4_like(parameters[0].get('value'), '192.168'))
self.assertEquals(parameters[1].get('name'), 'DHCPSERVER')
self.assertTrue(_ipv4_like(parameters[1].get('value'), '192.168.*.1'))
def _check_xml_and_container(self, instance):
user_context = context.RequestContext(self.user_id,
self.project_id)
instance_ref = db.instance_create(user_context, instance)
self.flags(libvirt_type='lxc')
conn = connection.LibvirtConnection(True)
uri = conn.get_uri()
self.assertEquals(uri, 'lxc:///')
network_info = _fake_network_info(self.stubs, 1)
xml = conn.to_xml(instance_ref, network_info)
tree = xml_to_tree(xml)
check = [
(lambda t: t.find('.').get('type'), 'lxc'),
(lambda t: t.find('./os/type').text, 'exe'),
(lambda t: t.find('./devices/filesystem/target').get('dir'), '/')]
for i, (check, expected_result) in enumerate(check):
self.assertEqual(check(tree),
expected_result,
'%s failed common check %d' % (xml, i))
target = tree.find('./devices/filesystem/source').get('dir')
self.assertTrue(len(target) > 0)
def _check_xml_and_disk_prefix(self, instance):
user_context = context.RequestContext(self.user_id,
self.project_id)
instance_ref = db.instance_create(user_context, instance)
type_disk_map = {
'qemu': [
(lambda t: t.find('.').get('type'), 'qemu'),
(lambda t: t.find('./devices/disk/target').get('dev'), 'vda')],
'xen': [
(lambda t: t.find('.').get('type'), 'xen'),
(lambda t: t.find('./devices/disk/target').get('dev'), 'sda')],
'kvm': [
(lambda t: t.find('.').get('type'), 'kvm'),
(lambda t: t.find('./devices/disk/target').get('dev'), 'vda')],
'uml': [
(lambda t: t.find('.').get('type'), 'uml'),
(lambda t: t.find('./devices/disk/target').get('dev'), 'ubda')]
}
for (libvirt_type, checks) in type_disk_map.iteritems():
self.flags(libvirt_type=libvirt_type)
conn = connection.LibvirtConnection(True)
network_info = _fake_network_info(self.stubs, 1)
xml = conn.to_xml(instance_ref, network_info)
tree = xml_to_tree(xml)
for i, (check, expected_result) in enumerate(checks):
self.assertEqual(check(tree),
expected_result,
'%s != %s failed check %d' %
(check(tree), expected_result, i))
def _check_xml_and_uri(self, instance, expect_ramdisk, expect_kernel,
rescue=False):
user_context = context.RequestContext(self.user_id, self.project_id)
instance_ref = db.instance_create(user_context, instance)
network_ref = db.project_get_networks(context.get_admin_context(),
self.project_id)[0]
type_uri_map = {'qemu': ('qemu:///system',
[(lambda t: t.find('.').get('type'), 'qemu'),
(lambda t: t.find('./os/type').text, 'hvm'),
(lambda t: t.find('./devices/emulator'), None)]),
'kvm': ('qemu:///system',
[(lambda t: t.find('.').get('type'), 'kvm'),
(lambda t: t.find('./os/type').text, 'hvm'),
(lambda t: t.find('./devices/emulator'), None)]),
'uml': ('uml:///system',
[(lambda t: t.find('.').get('type'), 'uml'),
(lambda t: t.find('./os/type').text, 'uml')]),
'xen': ('xen:///',
[(lambda t: t.find('.').get('type'), 'xen'),
(lambda t: t.find('./os/type').text, 'linux')]),
}
for hypervisor_type in ['qemu', 'kvm', 'xen']:
check_list = type_uri_map[hypervisor_type][1]
if rescue:
check = (lambda t: t.find('./os/kernel').text.split('/')[1],
'kernel.rescue')
check_list.append(check)
check = (lambda t: t.find('./os/initrd').text.split('/')[1],
'ramdisk.rescue')
check_list.append(check)
else:
if expect_kernel:
check = (lambda t: t.find('./os/kernel').text.split(
'/')[1], 'kernel')
else:
check = (lambda t: t.find('./os/kernel'), None)
check_list.append(check)
if expect_ramdisk:
check = (lambda t: t.find('./os/initrd').text.split(
'/')[1], 'ramdisk')
else:
check = (lambda t: t.find('./os/initrd'), None)
check_list.append(check)
parameter = './devices/interface/filterref/parameter'
common_checks = [
(lambda t: t.find('.').tag, 'domain'),
(lambda t: t.find(parameter).get('name'), 'IP'),
(lambda t: _ipv4_like(t.find(parameter).get('value'), '192.168'),
True),
(lambda t: t.findall(parameter)[1].get('name'), 'DHCPSERVER'),
(lambda t: _ipv4_like(t.findall(parameter)[1].get('value'),
'192.168.*.1'), True),
(lambda t: t.find('./devices/serial/source').get(
'path').split('/')[1], 'console.log'),
(lambda t: t.find('./memory').text, '2097152')]
if rescue:
common_checks += [
(lambda t: t.findall('./devices/disk/source')[0].get(
'file').split('/')[1], 'disk.rescue'),
(lambda t: t.findall('./devices/disk/source')[1].get(
'file').split('/')[1], 'disk')]
else:
common_checks += [(lambda t: t.findall(
'./devices/disk/source')[0].get('file').split('/')[1],
'disk')]
common_checks += [(lambda t: t.findall(
'./devices/disk/source')[1].get('file').split('/')[1],
'disk.local')]
for (libvirt_type, (expected_uri, checks)) in type_uri_map.iteritems():
self.flags(libvirt_type=libvirt_type)
conn = connection.LibvirtConnection(True)
uri = conn.get_uri()
self.assertEquals(uri, expected_uri)
network_info = _fake_network_info(self.stubs, 1)
xml = conn.to_xml(instance_ref, network_info, rescue)
tree = xml_to_tree(xml)
for i, (check, expected_result) in enumerate(checks):
self.assertEqual(check(tree),
expected_result,
'%s != %s failed check %d' %
(check(tree), expected_result, i))
for i, (check, expected_result) in enumerate(common_checks):
self.assertEqual(check(tree),
expected_result,
'%s != %s failed common check %d' %
(check(tree), expected_result, i))
# This test is supposed to make sure we don't
# override a specifically set uri
#
# Deliberately not just assigning this string to FLAGS.libvirt_uri and
# checking against that later on. This way we make sure the
# implementation doesn't fiddle around with the FLAGS.
testuri = 'something completely different'
self.flags(libvirt_uri=testuri)
for (libvirt_type, (expected_uri, checks)) in type_uri_map.iteritems():
self.flags(libvirt_type=libvirt_type)
conn = connection.LibvirtConnection(True)
uri = conn.get_uri()
self.assertEquals(uri, testuri)
db.instance_destroy(user_context, instance_ref['id'])
def test_update_available_resource_works_correctly(self):
"""Confirm compute_node table is updated successfully."""
self.flags(instances_path='.')
# Prepare mocks
def getVersion():
return 12003
def getType():
return 'qemu'
def listDomainsID():
return []
service_ref = self.create_service(host='dummy')
self.create_fake_libvirt_mock(getVersion=getVersion,
getType=getType,
listDomainsID=listDomainsID)
self.mox.StubOutWithMock(connection.LibvirtConnection,
'get_cpu_info')
connection.LibvirtConnection.get_cpu_info().AndReturn('cpuinfo')
# Start test
self.mox.ReplayAll()
conn = connection.LibvirtConnection(False)
conn.update_available_resource(self.context, 'dummy')
service_ref = db.service_get(self.context, service_ref['id'])
compute_node = service_ref['compute_node'][0]
if sys.platform.upper() == 'LINUX2':
self.assertTrue(compute_node['vcpus'] >= 0)
self.assertTrue(compute_node['memory_mb'] > 0)
self.assertTrue(compute_node['local_gb'] > 0)
self.assertTrue(compute_node['vcpus_used'] == 0)
self.assertTrue(compute_node['memory_mb_used'] > 0)
self.assertTrue(compute_node['local_gb_used'] > 0)
self.assertTrue(len(compute_node['hypervisor_type']) > 0)
self.assertTrue(compute_node['hypervisor_version'] > 0)
else:
self.assertTrue(compute_node['vcpus'] >= 0)
self.assertTrue(compute_node['memory_mb'] == 0)
self.assertTrue(compute_node['local_gb'] > 0)
self.assertTrue(compute_node['vcpus_used'] == 0)
self.assertTrue(compute_node['memory_mb_used'] == 0)
self.assertTrue(compute_node['local_gb_used'] > 0)
self.assertTrue(len(compute_node['hypervisor_type']) > 0)
self.assertTrue(compute_node['hypervisor_version'] > 0)
db.service_destroy(self.context, service_ref['id'])
def test_update_resource_info_no_compute_record_found(self):
"""Raise exception if no recorde found on services table."""
self.flags(instances_path='.')
self.create_fake_libvirt_mock()
self.mox.ReplayAll()
conn = connection.LibvirtConnection(False)
self.assertRaises(exception.ComputeServiceUnavailable,
conn.update_available_resource,
self.context, 'dummy')
@test.skip_if(missing_libvirt(), "Test requires libvirt")
def test_ensure_filtering_rules_for_instance_timeout(self):
"""ensure_filtering_fules_for_instance() finishes with timeout."""
# Preparing mocks
def fake_none(self, *args):
return
def fake_raise(self):
raise libvirt.libvirtError('ERR')
class FakeTime(object):
def __init__(self):
self.counter = 0
def sleep(self, t):
self.counter += t
fake_timer = FakeTime()
# _fake_network_info must be called before create_fake_libvirt_mock(),
# as _fake_network_info calls utils.import_class() and
# create_fake_libvirt_mock() mocks utils.import_class().
network_info = _fake_network_info(self.stubs, 1)
self.create_fake_libvirt_mock()
instance_ref = db.instance_create(self.context, self.test_instance)
# Start test
self.mox.ReplayAll()
try:
conn = connection.LibvirtConnection(False)
self.stubs.Set(conn.firewall_driver,
'setup_basic_filtering',
fake_none)
self.stubs.Set(conn.firewall_driver,
'prepare_instance_filter',
fake_none)
self.stubs.Set(conn.firewall_driver,
'instance_filter_exists',
fake_none)
conn.ensure_filtering_rules_for_instance(instance_ref,
network_info,
time=fake_timer)
except exception.Error, e:
c1 = (0 <= e.message.find('Timeout migrating for'))
self.assertTrue(c1)
self.assertEqual(29, fake_timer.counter, "Didn't wait the expected "
"amount of time")
db.instance_destroy(self.context, instance_ref['id'])
@test.skip_if(missing_libvirt(), "Test requires libvirt")
def test_live_migration_raises_exception(self):
"""Confirms recover method is called when exceptions are raised."""
# Preparing data
self.compute = utils.import_object(FLAGS.compute_manager)
instance_dict = {'host': 'fake',
'power_state': power_state.RUNNING,
'vm_state': vm_states.ACTIVE}
instance_ref = db.instance_create(self.context, self.test_instance)
instance_ref = db.instance_update(self.context, instance_ref['id'],
instance_dict)
vol_dict = {'status': 'migrating', 'size': 1}
volume_ref = db.volume_create(self.context, vol_dict)
db.volume_attached(self.context, volume_ref['id'], instance_ref['id'],
'/dev/fake')
# Preparing mocks
vdmock = self.mox.CreateMock(libvirt.virDomain)
self.mox.StubOutWithMock(vdmock, "migrateToURI")
vdmock.migrateToURI(FLAGS.live_migration_uri % 'dest',
mox.IgnoreArg(),
None, FLAGS.live_migration_bandwidth).\
AndRaise(libvirt.libvirtError('ERR'))
def fake_lookup(instance_name):
if instance_name == instance_ref.name:
return vdmock
self.create_fake_libvirt_mock(lookupByName=fake_lookup)
self.mox.StubOutWithMock(self.compute, "rollback_live_migration")
self.compute.rollback_live_migration(self.context, instance_ref,
'dest', False)
#start test
self.mox.ReplayAll()
conn = connection.LibvirtConnection(False)
self.assertRaises(libvirt.libvirtError,
conn._live_migration,
self.context, instance_ref, 'dest', False,
self.compute.rollback_live_migration)
instance_ref = db.instance_get(self.context, instance_ref['id'])
self.assertTrue(instance_ref['vm_state'] == vm_states.ACTIVE)
self.assertTrue(instance_ref['power_state'] == power_state.RUNNING)
volume_ref = db.volume_get(self.context, volume_ref['id'])
self.assertTrue(volume_ref['status'] == 'in-use')
db.volume_destroy(self.context, volume_ref['id'])
db.instance_destroy(self.context, instance_ref['id'])
def test_pre_live_migration_works_correctly(self):
"""Confirms pre_block_migration works correctly."""
# Creating testdata
vol = {'block_device_mapping': [
{'connection_info': 'dummy', 'mount_device': '/dev/sda'},
{'connection_info': 'dummy', 'mount_device': '/dev/sdb'}]}
conn = connection.LibvirtConnection(False)
# Creating mocks
self.mox.StubOutWithMock(driver, "block_device_info_get_mapping")
driver.block_device_info_get_mapping(vol
).AndReturn(vol['block_device_mapping'])
self.mox.StubOutWithMock(conn, "volume_driver_method")
for v in vol['block_device_mapping']:
conn.volume_driver_method('connect_volume',
v['connection_info'], v['mount_device'])
# Starting test
self.mox.ReplayAll()
self.assertEqual(conn.pre_live_migration(vol), None)
@test.skip_if(missing_libvirt(), "Test requires libvirt")
def test_pre_block_migration_works_correctly(self):
"""Confirms pre_block_migration works correctly."""
# Replace instances_path since this testcase creates tmpfile
tmpdir = tempfile.mkdtemp()
store = FLAGS.instances_path
FLAGS.instances_path = tmpdir
# Test data
instance_ref = db.instance_create(self.context, self.test_instance)
dummyjson = ('[{"path": "%s/disk", "local_gb": "10G",'
' "type": "raw", "backing_file": ""}]')
# Preparing mocks
# qemu-img should be mockd since test environment might not have
# large disk space.
self.mox.ReplayAll()
conn = connection.LibvirtConnection(False)
conn.pre_block_migration(self.context, instance_ref,
dummyjson % tmpdir)
self.assertTrue(os.path.exists('%s/%s/' %
(tmpdir, instance_ref.name)))
shutil.rmtree(tmpdir)
db.instance_destroy(self.context, instance_ref['id'])
# Restore FLAGS.instances_path
FLAGS.instances_path = store
@test.skip_if(missing_libvirt(), "Test requires libvirt")
def test_get_instance_disk_info_works_correctly(self):
"""Confirms pre_block_migration works correctly."""
# Test data
instance_ref = db.instance_create(self.context, self.test_instance)
dummyxml = ("<domain type='kvm'><name>instance-0000000a</name>"
"<devices>"
"<disk type='file'><driver name='qemu' type='raw'/>"
"<source file='/test/disk'/>"
"<target dev='vda' bus='virtio'/></disk>"
"<disk type='file'><driver name='qemu' type='qcow2'/>"
"<source file='/test/disk.local'/>"
"<target dev='vdb' bus='virtio'/></disk>"
"</devices></domain>")
# Preparing mocks
vdmock = self.mox.CreateMock(libvirt.virDomain)
self.mox.StubOutWithMock(vdmock, "XMLDesc")
vdmock.XMLDesc(0).AndReturn(dummyxml)
def fake_lookup(instance_name):
if instance_name == instance_ref.name:
return vdmock
self.create_fake_libvirt_mock(lookupByName=fake_lookup)
GB = 1024 * 1024 * 1024
fake_libvirt_utils.disk_sizes['/test/disk'] = 10 * GB
fake_libvirt_utils.disk_sizes['/test/disk.local'] = 20 * GB
fake_libvirt_utils.disk_backing_files['/test/disk.local'] = 'file'
self.mox.ReplayAll()
conn = connection.LibvirtConnection(False)
info = conn.get_instance_disk_info(self.context, instance_ref)
info = utils.loads(info)
self.assertEquals(info[0]['type'], 'raw')
self.assertEquals(info[1]['type'], 'qcow2')
self.assertEquals(info[0]['path'], '/test/disk')
self.assertEquals(info[1]['path'], '/test/disk.local')
self.assertEquals(info[0]['local_gb'], '10G')
self.assertEquals(info[1]['local_gb'], '20G')
self.assertEquals(info[0]['backing_file'], "")
self.assertEquals(info[1]['backing_file'], "file")
db.instance_destroy(self.context, instance_ref['id'])
@test.skip_if(missing_libvirt(), "Test requires libvirt")
def test_spawn_with_network_info(self):
# Preparing mocks
def fake_none(self, instance):
return
# _fake_network_info must be called before create_fake_libvirt_mock(),
# as _fake_network_info calls utils.import_class() and
# create_fake_libvirt_mock() mocks utils.import_class().
network_info = _fake_network_info(self.stubs, 1)
self.create_fake_libvirt_mock()
instance_ref = self.test_instance
instance_ref['image_ref'] = 123456 # we send an int to test sha1 call
instance = db.instance_create(self.context, instance_ref)
# Start test
self.mox.ReplayAll()
conn = connection.LibvirtConnection(False)
self.stubs.Set(conn.firewall_driver,
'setup_basic_filtering',