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)
