def create_asd(partition_alias):
"""
Creates and starts an ASD on a given disk
:param partition_alias: Alias of the partition of a disk (eg: /dev/disk/by-id/scsi-1ATA_TOSHIBA_MK2002TSKB_92M1KDMHF-part1)
:type partition_alias: str
:return: None
"""
all_asds = {}
mountpoint = None
for alias, mtpt in FSTab.read().iteritems():
all_asds.update(ASDController.list_asds(mtpt))
if alias == partition_alias:
mountpoint = mtpt
if mountpoint is None:
raise RuntimeError('Failed to retrieve the mountpoint for partition with alias: {0}'.format(partition_alias))
# Fetch disk information
disk_size = int(ASDController._local_client.run(['df', '-B', '1', '--output=size', mountpoint]).splitlines()[1])
# Find out appropriate disk size
asds = 1.0
for asd_id in os.listdir(mountpoint):
if os.path.isdir('/'.join([mountpoint, asd_id])) and Configuration.exists(ASDController.ASD_CONFIG.format(asd_id)):
asds += 1
asd_size = int(math.floor(disk_size / asds))
for asd_id in os.listdir(mountpoint):
if os.path.isdir('/'.join([mountpoint, asd_id])) and Configuration.exists(ASDController.ASD_CONFIG.format(asd_id)):
config = json.loads(Configuration.get(ASDController.ASD_CONFIG.format(asd_id), raw=True))
config['capacity'] = asd_size
config['rocksdb_block_cache_size'] = int(asd_size / 1024 / 4)
Configuration.set(ASDController.ASD_CONFIG.format(asd_id), json.dumps(config, indent=4), raw=True)
try:
ServiceManager.send_signal(ASDController.ASD_SERVICE_PREFIX.format(asd_id),
signal.SIGUSR1,
ASDController._local_client)
except Exception as ex:
ASDController._logger.info('Could not send signal to ASD for reloading the quota: {0}'.format(ex))
# Prepare & start service
asd_id = ''.join(random.choice(string.ascii_letters + string.digits) for _ in range(32))
ASDController._logger.info('Setting up service for disk {0}'.format(partition_alias))
homedir = '{0}/{1}'.format(mountpoint, asd_id)
base_port = Configuration.get('{0}/network|port'.format(ASDController.CONFIG_ROOT))
ips = Configuration.get('{0}/network|ips'.format(ASDController.CONFIG_ROOT))
used_ports = []
for asd in all_asds.itervalues():
used_ports.append(asd['port'])
if 'rora_port' in asd:
used_ports.append(asd['rora_port'])
asd_port = base_port
rora_port = base_port + 1
while asd_port in used_ports:
asd_port += 1
used_ports.append(asd_port)
while rora_port in used_ports:
rora_port += 1
asd_config = {'home': homedir,
'node_id': ASDController.NODE_ID,
'asd_id': asd_id,
'capacity': asd_size,
'log_level': 'info',
'port': asd_port,
'transport': 'tcp',
'rocksdb_block_cache_size': int(asd_size / 1024 / 4)}
if Configuration.get('/ovs/framework/rdma'):
asd_config['rora_port'] = rora_port
asd_config['rora_transport'] = 'rdma'
if ips is not None and len(ips) > 0:
asd_config['ips'] = ips
if Configuration.exists('{0}/extra'.format(ASDController.CONFIG_ROOT)):
data = Configuration.get('{0}/extra'.format(ASDController.CONFIG_ROOT))
asd_config.update(data)
Configuration.set(ASDController.ASD_CONFIG.format(asd_id), json.dumps(asd_config, indent=4), raw=True)
service_name = ASDController.ASD_SERVICE_PREFIX.format(asd_id)
params = {'CONFIG_PATH': Configuration.get_configuration_path('/ovs/alba/asds/{0}/config'.format(asd_id)),
'SERVICE_NAME': service_name,
'LOG_SINK': LogHandler.get_sink_path('alba_asd')}
os.mkdir(homedir)
ASDController._local_client.run(['chown', '-R', 'alba:alba', homedir])
ServiceManager.add_service('alba-asd', ASDController._local_client, params, service_name)
ASDController.start_asd(asd_id)
