cfd0232db8
Change ID I3e2973 broke XenAPI migrations (resizes) as it caused snapshots of all disks (including swap and ephemeral disks, if enabled) to be sent over to the destination host. The destination only expects vhds for the root disk, named by sequence numbers. swap and ephemeral disks ended up with sequence numbers, also, messing up the re-building of the chain on the destination. Fixes bug 1064083 Change ID I3e2973 also didn't change the stub of VM.snapshot to VDI.snapshot, but tests still passed due to the new code ignoring all exceptions while snapshotting. Potential issues in snapshot_attached_here() would also be ignored due to excessive stubbing in the xenapi migration testing. This is also addressed here. Change-Id: I145030f92a75615d056a30cabcb6ca97e34a8b6c
351 lines
12 KiB
Python
351 lines
12 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
|
|
|
# Copyright (c) 2010 Citrix Systems, Inc.
|
|
#
|
|
# 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.
|
|
|
|
"""Stubouts, mocks and fixtures for the test suite"""
|
|
|
|
import pickle
|
|
import random
|
|
|
|
from nova.openstack.common import jsonutils
|
|
from nova import test
|
|
import nova.tests.image.fake
|
|
from nova.virt.xenapi import driver as xenapi_conn
|
|
from nova.virt.xenapi import fake
|
|
from nova.virt.xenapi import vm_utils
|
|
from nova.virt.xenapi import vmops
|
|
|
|
|
|
def stubout_firewall_driver(stubs, conn):
|
|
|
|
def fake_none(self, *args):
|
|
return
|
|
|
|
_vmops = conn._vmops
|
|
stubs.Set(_vmops.firewall_driver, 'prepare_instance_filter', fake_none)
|
|
stubs.Set(_vmops.firewall_driver, 'instance_filter_exists', fake_none)
|
|
|
|
|
|
def stubout_instance_snapshot(stubs):
|
|
def fake_fetch_image(context, session, instance, name_label, image, type):
|
|
return {'root': dict(uuid=_make_fake_vdi(), file=None),
|
|
'kernel': dict(uuid=_make_fake_vdi(), file=None),
|
|
'ramdisk': dict(uuid=_make_fake_vdi(), file=None)}
|
|
|
|
stubs.Set(vm_utils, '_fetch_image', fake_fetch_image)
|
|
|
|
def fake_wait_for_vhd_coalesce(*args):
|
|
#TODO(sirp): Should we actually fake out the data here
|
|
return "fakeparent", "fakebase"
|
|
|
|
stubs.Set(vm_utils, '_wait_for_vhd_coalesce', fake_wait_for_vhd_coalesce)
|
|
|
|
|
|
def stubout_session(stubs, cls, product_version=(5, 6, 2),
|
|
product_brand='XenServer', **opt_args):
|
|
"""Stubs out methods from XenAPISession"""
|
|
stubs.Set(xenapi_conn.XenAPISession, '_create_session',
|
|
lambda s, url: cls(url, **opt_args))
|
|
stubs.Set(xenapi_conn.XenAPISession, '_get_product_version_and_brand',
|
|
lambda s: (product_version, product_brand))
|
|
|
|
|
|
def stubout_get_this_vm_uuid(stubs):
|
|
def f():
|
|
vms = [rec['uuid'] for ref, rec
|
|
in fake.get_all_records('VM').iteritems()
|
|
if rec['is_control_domain']]
|
|
return vms[0]
|
|
stubs.Set(vm_utils, 'get_this_vm_uuid', f)
|
|
|
|
|
|
def stubout_image_service_download(stubs):
|
|
def fake_download(*args, **kwargs):
|
|
pass
|
|
stubs.Set(nova.tests.image.fake._FakeImageService,
|
|
'download', fake_download)
|
|
|
|
|
|
def stubout_stream_disk(stubs):
|
|
def fake_stream_disk(*args, **kwargs):
|
|
pass
|
|
stubs.Set(vm_utils, '_stream_disk', fake_stream_disk)
|
|
|
|
|
|
def stubout_is_vdi_pv(stubs):
|
|
def f(_1):
|
|
return False
|
|
stubs.Set(vm_utils, '_is_vdi_pv', f)
|
|
|
|
|
|
def stubout_determine_is_pv_objectstore(stubs):
|
|
"""Assumes VMs stu have PV kernels"""
|
|
|
|
def f(*args):
|
|
return False
|
|
stubs.Set(vm_utils, '_determine_is_pv_objectstore', f)
|
|
|
|
|
|
def stubout_is_snapshot(stubs):
|
|
""" Always returns true
|
|
xenapi fake driver does not create vmrefs for snapshots """
|
|
|
|
def f(*args):
|
|
return True
|
|
stubs.Set(vm_utils, 'is_snapshot', f)
|
|
|
|
|
|
def stubout_lookup_image(stubs):
|
|
"""Simulates a failure in lookup image."""
|
|
def f(_1, _2, _3, _4):
|
|
raise Exception("Test Exception raised by fake lookup_image")
|
|
stubs.Set(vm_utils, 'lookup_image', f)
|
|
|
|
|
|
def stubout_fetch_disk_image(stubs, raise_failure=False):
|
|
"""Simulates a failure in fetch image_glance_disk."""
|
|
|
|
def _fake_fetch_disk_image(context, session, instance, name_label, image,
|
|
image_type):
|
|
if raise_failure:
|
|
raise fake.Failure("Test Exception raised by "
|
|
"fake fetch_image_glance_disk")
|
|
elif image_type == vm_utils.ImageType.KERNEL:
|
|
filename = "kernel"
|
|
elif image_type == vm_utils.ImageType.RAMDISK:
|
|
filename = "ramdisk"
|
|
else:
|
|
filename = "unknown"
|
|
|
|
vdi_type = vm_utils.ImageType.to_string(image_type)
|
|
return {vdi_type: dict(uuid=None, file=filename)}
|
|
|
|
stubs.Set(vm_utils, '_fetch_disk_image', _fake_fetch_disk_image)
|
|
|
|
|
|
def stubout_create_vm(stubs):
|
|
"""Simulates a failure in create_vm."""
|
|
|
|
def f(*args):
|
|
raise fake.Failure("Test Exception raised by " +
|
|
"fake create_vm")
|
|
stubs.Set(vm_utils, 'create_vm', f)
|
|
|
|
|
|
def _make_fake_vdi():
|
|
sr_ref = fake.get_all('SR')[0]
|
|
vdi_ref = fake.create_vdi('', sr_ref)
|
|
vdi_rec = fake.get_record('VDI', vdi_ref)
|
|
return vdi_rec['uuid']
|
|
|
|
|
|
class FakeSessionForVMTests(fake.SessionBase):
|
|
""" Stubs out a XenAPISession for VM tests """
|
|
|
|
_fake_iptables_save_output = ("# Generated by iptables-save v1.4.10 on "
|
|
"Sun Nov 6 22:49:02 2011\n"
|
|
"*filter\n"
|
|
":INPUT ACCEPT [0:0]\n"
|
|
":FORWARD ACCEPT [0:0]\n"
|
|
":OUTPUT ACCEPT [0:0]\n"
|
|
"COMMIT\n"
|
|
"# Completed on Sun Nov 6 22:49:02 2011\n")
|
|
|
|
def host_call_plugin(self, _1, _2, plugin, method, _5):
|
|
if (plugin, method) == ('glance', 'download_vhd'):
|
|
root_uuid = _make_fake_vdi()
|
|
return pickle.dumps(dict(root=dict(uuid=root_uuid)))
|
|
elif (plugin, method) == ("xenhost", "iptables_config"):
|
|
return fake.as_json(out=self._fake_iptables_save_output,
|
|
err='')
|
|
else:
|
|
return (super(FakeSessionForVMTests, self).
|
|
host_call_plugin(_1, _2, plugin, method, _5))
|
|
|
|
def VM_start(self, _1, ref, _2, _3):
|
|
vm = fake.get_record('VM', ref)
|
|
if vm['power_state'] != 'Halted':
|
|
raise fake.Failure(['VM_BAD_POWER_STATE', ref, 'Halted',
|
|
vm['power_state']])
|
|
vm['power_state'] = 'Running'
|
|
vm['is_a_template'] = False
|
|
vm['is_control_domain'] = False
|
|
vm['domid'] = random.randrange(1, 1 << 16)
|
|
return vm
|
|
|
|
def VM_start_on(self, _1, vm_ref, host_ref, _2, _3):
|
|
vm_rec = self.VM_start(_1, vm_ref, _2, _3)
|
|
vm_rec['resident_on'] = host_ref
|
|
|
|
def VDI_snapshot(self, session_ref, vm_ref, _1):
|
|
sr_ref = "fakesr"
|
|
return fake.create_vdi('fakelabel', sr_ref, read_only=True)
|
|
|
|
def SR_scan(self, session_ref, sr_ref):
|
|
pass
|
|
|
|
|
|
class FakeSessionForFirewallTests(FakeSessionForVMTests):
|
|
""" Stubs out a XenApi Session for doing IPTable Firewall tests """
|
|
|
|
def __init__(self, uri, test_case=None):
|
|
super(FakeSessionForFirewallTests, self).__init__(uri)
|
|
if hasattr(test_case, '_in_filter_rules'):
|
|
self._in_filter_rules = test_case._in_filter_rules
|
|
if hasattr(test_case, '_in6_filter_rules'):
|
|
self._in6_filter_rules = test_case._in6_filter_rules
|
|
if hasattr(test_case, '_in_nat_rules'):
|
|
self._in_nat_rules = test_case._in_nat_rules
|
|
self._test_case = test_case
|
|
|
|
def host_call_plugin(self, _1, _2, plugin, method, args):
|
|
"""Mock method four host_call_plugin to be used in unit tests
|
|
for the dom0 iptables Firewall drivers for XenAPI
|
|
|
|
"""
|
|
if plugin == "xenhost" and method == "iptables_config":
|
|
# The command to execute is a json-encoded list
|
|
cmd_args = args.get('cmd_args', None)
|
|
cmd = jsonutils.loads(cmd_args)
|
|
if not cmd:
|
|
ret_str = ''
|
|
else:
|
|
output = ''
|
|
process_input = args.get('process_input', None)
|
|
if cmd == ['ip6tables-save', '-c', '-t', 'filter']:
|
|
output = '\n'.join(self._in6_filter_rules)
|
|
if cmd == ['iptables-save', '-c', '-t', 'filter']:
|
|
output = '\n'.join(self._in_filter_rules)
|
|
if cmd == ['iptables-save', '-c', '-t', 'nat']:
|
|
output = '\n'.join(self._in_nat_rules)
|
|
if cmd == ['iptables-restore', '-c', ]:
|
|
lines = process_input.split('\n')
|
|
if '*filter' in lines:
|
|
if self._test_case is not None:
|
|
self._test_case._out_rules = lines
|
|
output = '\n'.join(lines)
|
|
if cmd == ['ip6tables-restore', '-c', ]:
|
|
lines = process_input.split('\n')
|
|
if '*filter' in lines:
|
|
output = '\n'.join(lines)
|
|
ret_str = fake.as_json(out=output, err='')
|
|
return ret_str
|
|
|
|
|
|
def stub_out_vm_methods(stubs):
|
|
def fake_acquire_bootlock(self, vm):
|
|
pass
|
|
|
|
def fake_release_bootlock(self, vm):
|
|
pass
|
|
|
|
def fake_generate_ephemeral(*args):
|
|
pass
|
|
|
|
def fake_wait_for_device(dev):
|
|
pass
|
|
|
|
stubs.Set(vmops.VMOps, "_acquire_bootlock", fake_acquire_bootlock)
|
|
stubs.Set(vmops.VMOps, "_release_bootlock", fake_release_bootlock)
|
|
stubs.Set(vm_utils, 'generate_ephemeral', fake_generate_ephemeral)
|
|
stubs.Set(vm_utils, '_wait_for_device', fake_wait_for_device)
|
|
|
|
|
|
class FakeSessionForVolumeTests(fake.SessionBase):
|
|
""" Stubs out a XenAPISession for Volume tests """
|
|
def VDI_introduce(self, _1, uuid, _2, _3, _4, _5,
|
|
_6, _7, _8, _9, _10, _11):
|
|
valid_vdi = False
|
|
refs = fake.get_all('VDI')
|
|
for ref in refs:
|
|
rec = fake.get_record('VDI', ref)
|
|
if rec['uuid'] == uuid:
|
|
valid_vdi = True
|
|
if not valid_vdi:
|
|
raise fake.Failure([['INVALID_VDI', 'session', self._session]])
|
|
|
|
|
|
class FakeSessionForVolumeFailedTests(FakeSessionForVolumeTests):
|
|
""" Stubs out a XenAPISession for Volume tests: it injects failures """
|
|
def VDI_introduce(self, _1, uuid, _2, _3, _4, _5,
|
|
_6, _7, _8, _9, _10, _11):
|
|
# This is for testing failure
|
|
raise fake.Failure([['INVALID_VDI', 'session', self._session]])
|
|
|
|
def PBD_unplug(self, _1, ref):
|
|
rec = fake.get_record('PBD', ref)
|
|
rec['currently-attached'] = False
|
|
|
|
def SR_forget(self, _1, ref):
|
|
pass
|
|
|
|
|
|
def stub_out_migration_methods(stubs):
|
|
fakesr = fake.create_sr()
|
|
|
|
def fake_move_disks(self, instance, disk_info):
|
|
vdi_ref = fake.create_vdi(instance['name'], fakesr)
|
|
vdi_rec = fake.get_record('VDI', vdi_ref)
|
|
vdi_rec['other_config']['nova_disk_type'] = 'root'
|
|
return {'uuid': vdi_rec['uuid'], 'ref': vdi_ref}
|
|
|
|
def fake_get_vdi(session, vm_ref):
|
|
vdi_ref_parent = fake.create_vdi('derp-parent', fakesr)
|
|
vdi_rec_parent = fake.get_record('VDI', vdi_ref_parent)
|
|
vdi_ref = fake.create_vdi('derp', fakesr,
|
|
sm_config={'vhd-parent': vdi_rec_parent['uuid']})
|
|
vdi_rec = session.call_xenapi("VDI.get_record", vdi_ref)
|
|
return vdi_ref, vdi_rec
|
|
|
|
def fake_sr(session, *args):
|
|
return fakesr
|
|
|
|
def fake_get_sr_path(*args):
|
|
return "fake"
|
|
|
|
def fake_destroy(*args, **kwargs):
|
|
pass
|
|
|
|
def fake_generate_ephemeral(*args):
|
|
pass
|
|
|
|
stubs.Set(vmops.VMOps, '_destroy', fake_destroy)
|
|
stubs.Set(vm_utils, 'move_disks', fake_move_disks)
|
|
stubs.Set(vm_utils, 'scan_default_sr', fake_sr)
|
|
stubs.Set(vm_utils, 'get_vdi_for_vm_safely', fake_get_vdi)
|
|
stubs.Set(vm_utils, 'get_sr_path', fake_get_sr_path)
|
|
stubs.Set(vm_utils, 'generate_ephemeral', fake_generate_ephemeral)
|
|
|
|
|
|
class FakeSessionForFailedMigrateTests(FakeSessionForVMTests):
|
|
def VM_assert_can_migrate(self, session, vmref, migrate_data,
|
|
live, vdi_map, vif_map, options):
|
|
raise fake.Failure("XenAPI VM.assert_can_migrate failed")
|
|
|
|
def host_migrate_receive(self, session, hostref, networkref, options):
|
|
raise fake.Failure("XenAPI host.migrate_receive failed")
|
|
|
|
def VM_migrate_send(self, session, vmref, migrate_data, islive, vdi_map,
|
|
vif_map, options):
|
|
raise fake.Failure("XenAPI VM.migrate_send failed")
|
|
|
|
|
|
class XenAPITestBase(test.TestCase):
|
|
def setUp(self):
|
|
super(XenAPITestBase, self).setUp()
|
|
|
|
self.stub_module('XenAPI', fake)
|
|
|
|
fake.reset()
|