def create_vdisks_for_mds_service(amount,
start_id,
mds_service=None,
storagedriver=None):
"""
Generates vdisks and appends them to a given mds_service
"""
if (mds_service is None
and storagedriver is None) or (mds_service is not None
and storagedriver is not None):
raise RuntimeError(
'Either `mds_service` or `storagedriver` should be passed')
vdisks = {}
storagedriver_id = None
vpool = None
mds_services = []
if mds_service is not None:
mds_services.append(mds_service)
for sd in mds_service.vpool.storagedrivers:
if sd.storagerouter_guid == mds_service.service.storagerouter_guid:
storagedriver_id = sd.storagedriver_id
vpool = sd.vpool
if storagedriver_id is None:
raise RuntimeError(
'The given MDSService is located on a node without StorageDriver'
)
else:
storagedriver_id = storagedriver.storagedriver_id
vpool = storagedriver.vpool
srclient = StorageRouterClient(vpool.guid, None)
for i in xrange(start_id, start_id + amount):
devicename = 'vdisk_{0}'.format(i)
mds_backend_config = DalHelper.generate_mds_metadata_backend_config(
mds_services)
volume_id = srclient.create_volume(devicename, mds_backend_config,
0, str(storagedriver_id))
if len(mds_services) == 1:
MDSClient.set_catchup(mds_services[0], volume_id, 50)
vdisk = VDisk()
vdisk.name = str(i)
vdisk.devicename = devicename
vdisk.volume_id = volume_id
vdisk.vpool = vpool
vdisk.size = 0
vdisk.save()
vdisk.reload_client('storagedriver')
if mds_service is not None:
junction = MDSServiceVDisk()
junction.vdisk = vdisk
junction.mds_service = mds_service
junction.is_master = True
junction.save()
vdisks[i] = vdisk
return vdisks
def load(vpool, excluded_storagedrivers=None):
"""
Initializes the wrapper for a given vpool
:param vpool: vPool for which the StorageRouterClient needs to be loaded
:type vpool: vPool
:param excluded_storagedrivers: A list of storagedrivers that cannot be used as a client
:type excluded_storagedrivers: list or None
"""
if excluded_storagedrivers is None:
excluded_storagedrivers = []
key = vpool.identifier
if key not in client_vpool_cache:
cluster_contacts = []
for storagedriver in vpool.storagedrivers[:3]:
if storagedriver not in excluded_storagedrivers:
cluster_contacts.append(
ClusterContact(str(storagedriver.cluster_ip),
storagedriver.ports['xmlrpc']))
client = StorageRouterClient(str(vpool.guid), cluster_contacts)
client_vpool_cache[key] = client
return client_vpool_cache[key]
def test_event_resize_from_volumedriver(self):
"""
Test resize from volumedriver event
- Create a vDisk using the resize event
- Resize the created vDisk using the same resize event
"""
structure = DalHelper.build_dal_structure({
'vpools': [1],
'storagerouters': [1],
'storagedrivers':
[(1, 1, 1)], # (<id>, <vpool_id>, <storagerouter_id>)
'mds_services': [(1, 1)]
} # (<id>, <storagedriver_id>)
)
vpools = structure['vpools']
storagedrivers = structure['storagedrivers']
mds_service = structure['mds_services'][1]
# Create volume using resize from voldrv
device_name = '/vdisk.raw'
srclient = StorageRouterClient(vpools[1].guid, None)
mds_backend_config = DalHelper.generate_mds_metadata_backend_config(
[mds_service])
volume_id = srclient.create_volume(
device_name, mds_backend_config, 1024**4,
str(storagedrivers[1].storagedriver_id))
VDiskController.resize_from_voldrv(
volume_id=volume_id,
volume_size=1024**4,
volume_path=device_name,
storagedriver_id=storagedrivers[1].storagedriver_id)
vdisks = VDiskList.get_vdisks()
self.assertTrue(expr=len(vdisks) == 1,
msg='Expected to find 1 vDisk in model')
self.assertEqual(first=vdisks[0].name,
second='vdisk',
msg='Volume name should be vdisk')
self.assertEqual(first=vdisks[0].volume_id,
second=volume_id,
msg='Volume ID should be {0}'.format(volume_id))
self.assertEqual(first=vdisks[0].devicename,
second=device_name,
msg='Device name should be {0}'.format(device_name))
self.assertEqual(first=vdisks[0].size,
second=1024**4,
msg='Size should be 1 TiB')
# Resize volume using resize from voldrv
VDiskController.resize_from_voldrv(
volume_id=volume_id,
volume_size=2 * 1024**4,
volume_path=device_name,
storagedriver_id=storagedrivers[1].storagedriver_id)
vdisks = VDiskList.get_vdisks()
self.assertTrue(expr=len(vdisks) == 1,
msg='Expected to find 1 vDisk in model')
self.assertEqual(first=vdisks[0].name,
second='vdisk',
msg='Volume name should be vdisk')
self.assertEqual(first=vdisks[0].size,
second=2 * 1024**4,
msg='Size should be 2 TiB')
def build_dal_structure(structure, previous_structure=None):
"""
Builds a model structure
Example:
structure = DalHelper.build_service_structure(
{'vpools': [1],
'domains': [],
'storagerouters': [1],
'storagedrivers': [(1, 1, 1)], # (<id>, <vpool_id>, <storagerouter_id>)
'mds_services': [(1, 1)], # (<id>, <storagedriver_id>)
'storagerouter_domains': []} # (<id>, <storagerouter_id>, <domain_id>)
)
"""
Configuration.set(key=Configuration.EDITION_KEY,
value=PackageFactory.EDITION_ENTERPRISE)
if previous_structure is None:
previous_structure = {}
vdisks = previous_structure.get('vdisks', {})
vpools = previous_structure.get('vpools', {})
domains = previous_structure.get('domains', {})
services = previous_structure.get('services', {})
mds_services = previous_structure.get('mds_services', {})
storagerouters = previous_structure.get('storagerouters', {})
storagedrivers = previous_structure.get('storagedrivers', {})
storagerouter_domains = previous_structure.get('storagerouter_domains',
{})
service_types = {}
for service_type_name in ServiceType.SERVICE_TYPES.values():
service_type = ServiceTypeList.get_by_name(service_type_name)
if service_type is None:
service_type = ServiceType()
service_type.name = service_type_name
service_type.save()
service_types[service_type_name] = service_type
srclients = {}
for domain_id in structure.get('domains', []):
if domain_id not in domains:
domain = Domain()
domain.name = 'domain_{0}'.format(domain_id)
domain.save()
domains[domain_id] = domain
for vpool_id in structure.get('vpools', []):
if vpool_id not in vpools:
vpool = VPool()
vpool.name = str(vpool_id)
vpool.status = 'RUNNING'
vpool.metadata = {'backend': {}, 'caching_info': {}}
vpool.metadata_store_bits = 5
vpool.save()
vpools[vpool_id] = vpool
else:
vpool = vpools[vpool_id]
srclients[vpool_id] = StorageRouterClient(vpool.guid, None)
Configuration.set(
'/ovs/vpools/{0}/mds_config|mds_tlogs'.format(vpool.guid), 100)
Configuration.set(
'/ovs/vpools/{0}/mds_config|mds_safety'.format(vpool.guid), 2)
Configuration.set(
'/ovs/vpools/{0}/mds_config|mds_maxload'.format(vpool.guid),
75)
Configuration.set(
'/ovs/vpools/{0}/proxies/scrub/generic_scrub'.format(
vpool.guid),
json.dumps({}, indent=4),
raw=True)
for sr_id in structure.get('storagerouters', []):
if sr_id not in storagerouters:
storagerouter = StorageRouter()
storagerouter.name = str(sr_id)
storagerouter.ip = '10.0.0.{0}'.format(sr_id)
storagerouter.rdma_capable = False
storagerouter.node_type = 'MASTER'
storagerouter.machine_id = str(sr_id)
storagerouter.save()
storagerouters[sr_id] = storagerouter
disk = Disk()
disk.storagerouter = storagerouter
disk.state = 'OK'
disk.name = '/dev/uda'
disk.size = 1 * 1024**4
disk.is_ssd = True
disk.aliases = ['/dev/uda']
disk.save()
partition = DiskPartition()
partition.offset = 0
partition.size = disk.size
partition.aliases = ['/dev/uda-1']
partition.state = 'OK'
partition.mountpoint = '/tmp/unittest/sr_{0}/disk_1/partition_1'.format(
sr_id)
partition.disk = disk
partition.roles = [
DiskPartition.ROLES.DB, DiskPartition.ROLES.SCRUB
]
partition.save()
else:
storagerouter = storagerouters[sr_id]
# noinspection PyProtectedMember
System._machine_id[storagerouter.ip] = str(sr_id)
mds_start = 10000 + 100 * (sr_id - 1)
mds_end = 10000 + 100 * sr_id - 1
arakoon_start = 20000 + 100 * (sr_id - 1)
storagedriver_start = 30000 + 100 * (sr_id - 1)
storagedriver_end = 30000 + 100 * sr_id - 1
Configuration.initialize_host(
host_id=sr_id,
port_info={
'mds': [mds_start, mds_end],
'arakoon': arakoon_start,
'storagedriver': [storagedriver_start, storagedriver_end]
})
for sd_id, vpool_id, sr_id in structure.get('storagedrivers', ()):
if sd_id not in storagedrivers:
storagedriver = StorageDriver()
storagedriver.vpool = vpools[vpool_id]
storagedriver.storagerouter = storagerouters[sr_id]
storagedriver.name = str(sd_id)
storagedriver.mountpoint = '/'
storagedriver.cluster_ip = storagerouters[sr_id].ip
storagedriver.storage_ip = '10.0.1.{0}'.format(sr_id)
storagedriver.storagedriver_id = str(sd_id)
storagedriver.ports = {
'management': 1,
'xmlrpc': 2,
'dtl': 3,
'edge': 4
}
storagedriver.save()
storagedrivers[sd_id] = storagedriver
DalHelper.set_vpool_storage_driver_configuration(
vpool=vpools[vpool_id], storagedriver=storagedriver)
for mds_id, sd_id in structure.get('mds_services', ()):
if mds_id not in mds_services:
sd = storagedrivers[sd_id]
s_id = '{0}-{1}'.format(sd.storagerouter.name, mds_id)
service = Service()
service.name = s_id
service.storagerouter = sd.storagerouter
service.ports = [mds_id]
service.type = service_types['MetadataServer']
service.save()
services[s_id] = service
mds_service = MDSService()
mds_service.service = service
mds_service.number = 0
mds_service.capacity = 10
mds_service.vpool = sd.vpool
mds_service.save()
mds_services[mds_id] = mds_service
StorageDriverController.add_storagedriverpartition(
sd, {
'size': None,
'role': DiskPartition.ROLES.DB,
'sub_role': StorageDriverPartition.SUBROLE.MDS,
'partition': sd.storagerouter.disks[0].partitions[0],
'mds_service': mds_service
})
for vdisk_id, storage_driver_id, vpool_id, mds_id in structure.get(
'vdisks', ()):
if vdisk_id not in vdisks:
vpool = vpools[vpool_id]
devicename = 'vdisk_{0}'.format(vdisk_id)
mds_backend_config = DalHelper.generate_mds_metadata_backend_config(
[] if mds_id is None else [mds_services[mds_id]])
volume_id = srclients[vpool_id].create_volume(
devicename, mds_backend_config, 0, str(storage_driver_id))
vdisk = VDisk()
vdisk.name = str(vdisk_id)
vdisk.devicename = devicename
vdisk.volume_id = volume_id
vdisk.vpool = vpool
vdisk.size = 0
vdisk.save()
vdisk.reload_client('storagedriver')
vdisks[vdisk_id] = vdisk
for srd_id, sr_id, domain_id, backup in structure.get(
'storagerouter_domains', ()):
if srd_id not in storagerouter_domains:
sr_domain = StorageRouterDomain()
sr_domain.backup = backup
sr_domain.domain = domains[domain_id]
sr_domain.storagerouter = storagerouters[sr_id]
sr_domain.save()
storagerouter_domains[srd_id] = sr_domain
return {
'vdisks': vdisks,
'vpools': vpools,
'domains': domains,
'services': services,
'mds_services': mds_services,
'service_types': service_types,
'storagerouters': storagerouters,
'storagedrivers': storagedrivers,
'storagerouter_domains': storagerouter_domains
}
def build_service_structure(structure, previous_structure=None):
"""
Builds an MDS service structure
Example:
structure = Helper.build_service_structure(
{'vpools': [1],
'domains': [],
'storagerouters': [1],
'storagedrivers': [(1, 1, 1)], # (<id>, <vpool_id>, <storagerouter_id>)
'mds_services': [(1, 1)], # (<id>, <storagedriver_id>)
'storagerouter_domains': []} # (<id>, <storagerouter_id>, <domain_id>)
)
"""
if previous_structure is None:
previous_structure = {}
vdisks = previous_structure.get('vdisks', {})
vpools = previous_structure.get('vpools', {})
domains = previous_structure.get('domains', {})
services = previous_structure.get('services', {})
mds_services = previous_structure.get('mds_services', {})
storagerouters = previous_structure.get('storagerouters', {})
storagedrivers = previous_structure.get('storagedrivers', {})
storagerouter_domains = previous_structure.get('storagerouter_domains',
{})
service_type = ServiceTypeList.get_by_name('MetadataServer')
if service_type is None:
service_type = ServiceType()
service_type.name = 'MetadataServer'
service_type.save()
srclients = {}
for domain_id in structure.get('domains', []):
if domain_id not in domains:
domain = Domain()
domain.name = 'domain_{0}'.format(domain_id)
domain.save()
domains[domain_id] = domain
for vpool_id in structure.get('vpools', []):
if vpool_id not in vpools:
vpool = VPool()
vpool.name = str(vpool_id)
vpool.status = 'RUNNING'
vpool.save()
vpools[vpool_id] = vpool
else:
vpool = vpools[vpool_id]
srclients[vpool_id] = StorageRouterClient(vpool.guid, None)
for sr_id in structure.get('storagerouters', []):
if sr_id not in storagerouters:
storagerouter = StorageRouter()
storagerouter.name = str(sr_id)
storagerouter.ip = '10.0.0.{0}'.format(sr_id)
storagerouter.rdma_capable = False
storagerouter.node_type = 'MASTER'
storagerouter.machine_id = str(sr_id)
storagerouter.save()
storagerouters[sr_id] = storagerouter
disk = Disk()
disk.storagerouter = storagerouter
disk.state = 'OK'
disk.name = '/dev/uda'
disk.size = 1 * 1024**4
disk.is_ssd = True
disk.aliases = ['/dev/uda']
disk.save()
partition = DiskPartition()
partition.offset = 0
partition.size = disk.size
partition.aliases = ['/dev/uda-1']
partition.state = 'OK'
partition.mountpoint = '/tmp/unittest/sr_{0}/disk_1/partition_1'.format(
sr_id)
partition.disk = disk
partition.roles = [
DiskPartition.ROLES.DB, DiskPartition.ROLES.SCRUB
]
partition.save()
for sd_id, vpool_id, sr_id in structure.get('storagedrivers', ()):
if sd_id not in storagedrivers:
storagedriver = StorageDriver()
storagedriver.vpool = vpools[vpool_id]
storagedriver.storagerouter = storagerouters[sr_id]
storagedriver.name = str(sd_id)
storagedriver.mountpoint = '/'
storagedriver.cluster_ip = storagerouters[sr_id].ip
storagedriver.storage_ip = '10.0.1.{0}'.format(sr_id)
storagedriver.storagedriver_id = str(sd_id)
storagedriver.ports = {
'management': 1,
'xmlrpc': 2,
'dtl': 3,
'edge': 4
}
storagedriver.save()
storagedrivers[sd_id] = storagedriver
Helper._set_vpool_storage_driver_configuration(
vpool=vpools[vpool_id], storagedriver=storagedriver)
for mds_id, sd_id in structure.get('mds_services', ()):
if mds_id not in mds_services:
sd = storagedrivers[sd_id]
s_id = '{0}-{1}'.format(sd.storagerouter.name, mds_id)
service = Service()
service.name = s_id
service.storagerouter = sd.storagerouter
service.ports = [mds_id]
service.type = service_type
service.save()
services[s_id] = service
mds_service = MDSService()
mds_service.service = service
mds_service.number = 0
mds_service.capacity = 10
mds_service.vpool = sd.vpool
mds_service.save()
mds_services[mds_id] = mds_service
StorageDriverController.add_storagedriverpartition(
sd, {
'size': None,
'role': DiskPartition.ROLES.DB,
'sub_role': StorageDriverPartition.SUBROLE.MDS,
'partition': sd.storagerouter.disks[0].partitions[0],
'mds_service': mds_service
})
for vdisk_id, storage_driver_id, vpool_id, mds_id in structure.get(
'vdisks', ()):
if vdisk_id not in vdisks:
vpool = vpools[vpool_id]
devicename = 'vdisk_{0}'.format(vdisk_id)
mds_backend_config = Helper._generate_mdsmetadatabackendconfig(
[] if mds_id is None else [mds_services[mds_id]])
volume_id = srclients[vpool_id].create_volume(
devicename, mds_backend_config, 0, str(storage_driver_id))
vdisk = VDisk()
vdisk.name = str(vdisk_id)
vdisk.devicename = devicename
vdisk.volume_id = volume_id
vdisk.vpool = vpool
vdisk.size = 0
vdisk.save()
vdisk.reload_client('storagedriver')
vdisks[vdisk_id] = vdisk
for srd_id, sr_id, domain_id, backup in structure.get(
'storagerouter_domains', ()):
if srd_id not in storagerouter_domains:
sr_domain = StorageRouterDomain()
sr_domain.backup = backup
sr_domain.domain = domains[domain_id]
sr_domain.storagerouter = storagerouters[sr_id]
sr_domain.save()
storagerouter_domains[srd_id] = sr_domain
return {
'vdisks': vdisks,
'vpools': vpools,
'domains': domains,
'services': services,
'service_type': service_type,
'mds_services': mds_services,
'storagerouters': storagerouters,
'storagedrivers': storagedrivers,
'storagerouter_domains': storagerouter_domains
}
def test_reusing_devicename(self):
"""
Validates whether the framework can handle out of sync processed events when a vDisk with the same devicename
is created and removed over and over
"""
structure = DalHelper.build_dal_structure({
'vpools': [1],
'storagerouters': [1],
'storagedrivers':
[(1, 1, 1)], # (<id>, <vpool_id>, <storagerouter_id>)
'mds_services': [(1, 1)]
} # (<id>, <storagedriver_id>)
)
vpool = structure['vpools'][1]
storagedriver = structure['storagedrivers'][1]
mds_service = structure['mds_services'][1]
# noinspection PyArgumentList
backend_config = MDSMetaDataBackendConfig([
MDSNodeConfig(address=str(mds_service.service.storagerouter.ip),
port=mds_service.service.ports[0])
])
devicename = '/test.raw'
size = 1024**3
srclient = StorageRouterClient(vpool.guid, None)
# A normal flow would be:
# * create volume, resize event,
# * delete volume, delete event,
# * create volume, resize event,
# * delete volume, delete event
# Let's test the normal flow
first_volume_id = srclient.create_volume(
devicename, backend_config, size, storagedriver.storagedriver_id)
VDiskController.resize_from_voldrv(first_volume_id, size, devicename,
storagedriver.storagedriver_id)
self.assertEqual(len(srclient.list_volumes()), 1)
self.assertEqual(len(vpool.vdisks), 1)
srclient.unlink(devicename)
VDiskController.delete_from_voldrv(first_volume_id)
self.assertEqual(len(srclient.list_volumes()), 0)
self.assertEqual(len(vpool.vdisks), 0)
second_volume_id = srclient.create_volume(
devicename, backend_config, size, storagedriver.storagedriver_id)
VDiskController.resize_from_voldrv(second_volume_id, size, devicename,
storagedriver.storagedriver_id)
self.assertEqual(len(srclient.list_volumes()), 1)
self.assertEqual(len(vpool.vdisks), 1)
srclient.unlink(devicename)
VDiskController.delete_from_voldrv(second_volume_id)
self.assertEqual(len(srclient.list_volumes()), 0)
self.assertEqual(len(vpool.vdisks), 0)
# Out of sync - scenario 1
first_volume_id = srclient.create_volume(
devicename, backend_config, size, storagedriver.storagedriver_id)
VDiskController.resize_from_voldrv(first_volume_id, size, devicename,
storagedriver.storagedriver_id)
self.assertEqual(len(srclient.list_volumes()), 1)
self.assertEqual(len(vpool.vdisks), 1)
srclient.unlink(devicename)
second_volume_id = srclient.create_volume(
devicename, backend_config, size, storagedriver.storagedriver_id)
VDiskController.resize_from_voldrv(second_volume_id, size, devicename,
storagedriver.storagedriver_id)
self.assertEqual(len(srclient.list_volumes()), 1)
self.assertEqual(len(vpool.vdisks), 2)
VDiskController.delete_from_voldrv(first_volume_id)
self.assertEqual(len(srclient.list_volumes()), 1)
self.assertEqual(len(vpool.vdisks), 1)
srclient.unlink(devicename)
VDiskController.delete_from_voldrv(second_volume_id)
self.assertEqual(len(srclient.list_volumes()), 0)
self.assertEqual(len(vpool.vdisks), 0)
# Out of sync - scenario 2
first_volume_id = srclient.create_volume(
devicename, backend_config, size, storagedriver.storagedriver_id)
self.assertEqual(len(srclient.list_volumes()), 1)
self.assertEqual(len(vpool.vdisks), 0)
srclient.unlink(devicename)
self.assertEqual(len(srclient.list_volumes()), 0)
self.assertEqual(len(vpool.vdisks), 0)
second_volume_id = srclient.create_volume(
devicename, backend_config, size, storagedriver.storagedriver_id)
self.assertEqual(len(srclient.list_volumes()), 1)
self.assertEqual(len(vpool.vdisks), 0)
VDiskController.resize_from_voldrv(first_volume_id, size, devicename,
storagedriver.storagedriver_id)
self.assertEqual(len(srclient.list_volumes()), 1)
self.assertEqual(len(vpool.vdisks), 0)
VDiskController.resize_from_voldrv(second_volume_id, size, devicename,
storagedriver.storagedriver_id)
self.assertEqual(len(srclient.list_volumes()), 1)
self.assertEqual(len(vpool.vdisks), 1)
srclient.unlink(devicename)
self.assertEqual(len(srclient.list_volumes()), 0)
self.assertEqual(len(vpool.vdisks), 1)
VDiskController.delete_from_voldrv(first_volume_id)
self.assertEqual(len(srclient.list_volumes()), 0)
self.assertEqual(len(vpool.vdisks), 1)
VDiskController.delete_from_voldrv(second_volume_id)
self.assertEqual(len(srclient.list_volumes()), 0)
self.assertEqual(len(vpool.vdisks), 0)
def test_sync(self):
"""
Validates whether the sync works as expected
"""
structure = DalHelper.build_dal_structure({
'vpools': [1],
'storagerouters': [1],
'storagedrivers':
[(1, 1, 1)], # (<id>, <vpool_id>, <storagerouter_id>)
'mds_services': [(1, 1)]
} # (<id>, <storagedriver_id>)
)
vpool = structure['vpools'][1]
storagedriver = structure['storagedrivers'][1]
mds_service = structure['mds_services'][1]
# noinspection PyArgumentList
backend_config = MDSMetaDataBackendConfig([
MDSNodeConfig(address=str(mds_service.service.storagerouter.ip),
port=mds_service.service.ports[0])
])
srclient = StorageRouterClient(vpool.guid, None)
VDiskController.create_new('one', 1024**3, storagedriver.guid)
VDiskController.create_new('two', 1024**3, storagedriver.guid)
vdisks = VDiskList.get_vdisks()
self.assertEqual(len(vdisks), 2)
self.assertEqual(len(srclient.list_volumes()), 2)
VDiskController.sync_with_reality()
vdisks = VDiskList.get_vdisks()
self.assertEqual(len(vdisks), 2)
self.assertEqual(len(srclient.list_volumes()), 2)
volume_id = srclient.create_volume('/three.raw', backend_config,
1024**3,
storagedriver.storagedriver_id)
vdisks = VDiskList.get_vdisks()
self.assertEqual(len(vdisks), 2)
self.assertEqual(len(srclient.list_volumes()), 3)
VDiskController.sync_with_reality()
vdisks = VDiskList.get_vdisks()
self.assertEqual(len(vdisks), 3)
self.assertEqual(len(srclient.list_volumes()), 3)
vdisk = VDiskList.get_vdisk_by_volume_id(volume_id)
self.assertEqual(vdisk.devicename, '/three.raw')
vdisk = VDisk()
vdisk.volume_id = 'foo'
vdisk.name = 'foo'
vdisk.devicename = 'foo.raw'
vdisk.size = 1024**3
vdisk.vpool = vpool
vdisk.save()
vdisks = VDiskList.get_vdisks()
self.assertEqual(len(vdisks), 4)
self.assertEqual(len(srclient.list_volumes()), 3)
VDiskController.sync_with_reality()
vdisks = VDiskList.get_vdisks()
self.assertEqual(len(vdisks), 3)
self.assertEqual(len(srclient.list_volumes()), 3)
with self.assertRaises(ObjectNotFoundException):
vdisk.save()