def _info(self):
"""
Fetches the info (see Volume Driver API) for the vDisk.
"""
if self.volume_id and self.vpool:
try:
vdiskinfo = self.storagedriver_client.info_volume(str(self.volume_id))
except:
vdiskinfo = StorageDriverClient.empty_info()
else:
vdiskinfo = StorageDriverClient.empty_info()
vdiskinfodict = {}
for key, value in vdiskinfo.__class__.__dict__.items():
if type(value) is property:
objectvalue = getattr(vdiskinfo, key)
if key == 'object_type':
vdiskinfodict[key] = str(objectvalue)
elif key == 'metadata_backend_config':
vdiskinfodict[key] = {}
if hasattr(objectvalue, 'node_configs') and callable(objectvalue.node_configs):
vdiskinfodict[key] = []
for nodeconfig in objectvalue.node_configs():
vdiskinfodict[key].append({'ip': nodeconfig.address(),
'port': nodeconfig.port()})
else:
vdiskinfodict[key] = objectvalue
return vdiskinfodict
def fetch_statistics(self):
"""
Loads statistics from this vDisk - returns unprocessed data
"""
# Load data from volumedriver
if self.volume_id and self.vpool:
try:
vdiskstats = self.storagedriver_client.statistics_volume(str(self.volume_id))
vdiskinfo = self.storagedriver_client.info_volume(str(self.volume_id))
except:
vdiskstats = StorageDriverClient.empty_statistics()
vdiskinfo = StorageDriverClient.empty_info()
else:
vdiskstats = StorageDriverClient.empty_statistics()
vdiskinfo = StorageDriverClient.empty_info()
# Load volumedriver data in dictionary
vdiskstatsdict = {}
try:
pc = vdiskstats.performance_counters
vdiskstatsdict['backend_data_read'] = pc.backend_read_request_size.sum()
vdiskstatsdict['backend_data_written'] = pc.backend_write_request_size.sum()
vdiskstatsdict['backend_read_operations'] = pc.backend_read_request_size.events()
vdiskstatsdict['backend_write_operations'] = pc.backend_write_request_size.events()
vdiskstatsdict['data_read'] = pc.read_request_size.sum()
vdiskstatsdict['data_written'] = pc.write_request_size.sum()
vdiskstatsdict['read_operations'] = pc.read_request_size.events()
vdiskstatsdict['write_operations'] = pc.write_request_size.events()
for key in ['cluster_cache_hits', 'cluster_cache_misses', 'metadata_store_hits',
'metadata_store_misses', 'sco_cache_hits', 'sco_cache_misses']:
vdiskstatsdict[key] = getattr(vdiskstats, key)
# Do some more manual calculations
block_size = vdiskinfo.lba_size * vdiskinfo.cluster_multiplier
if block_size == 0:
block_size = 4096
vdiskstatsdict['4k_read_operations'] = vdiskstatsdict['data_read'] / block_size
vdiskstatsdict['4k_write_operations'] = vdiskstatsdict['data_written'] / block_size
# Precalculate sums
for key, items in StorageDriverClient.stat_sums.iteritems():
vdiskstatsdict[key] = 0
for item in items:
vdiskstatsdict[key] += vdiskstatsdict[item]
except:
pass
return vdiskstatsdict
