def _get_manageable_resource_info(self, cinder_resources, resource_type,
marker, limit, offset, sort_keys,
sort_dirs):
entries = []
lvs = self.vg.get_volumes()
cinder_ids = [resource['id'] for resource in cinder_resources]
for lv in lvs:
is_snap = self.vg.lv_is_snapshot(lv['name'])
if ((resource_type == 'volume' and is_snap)
or (resource_type == 'snapshot' and not is_snap)):
continue
if resource_type == 'volume':
potential_id = volume_utils.extract_id_from_volume_name(
lv['name'])
else:
unescape = self._unescape_snapshot(lv['name'])
potential_id = volume_utils.extract_id_from_snapshot_name(
unescape)
lv_info = {
'reference': {
'source-name': lv['name']
},
'size': int(math.ceil(float(lv['size']))),
'cinder_id': None,
'extra_info': None
}
if potential_id in cinder_ids:
lv_info['safe_to_manage'] = False
lv_info['reason_not_safe'] = 'already managed'
lv_info['cinder_id'] = potential_id
elif self.vg.lv_is_open(lv['name']):
lv_info['safe_to_manage'] = False
lv_info['reason_not_safe'] = '%s in use' % resource_type
else:
lv_info['safe_to_manage'] = True
lv_info['reason_not_safe'] = None
if resource_type == 'snapshot':
origin = self.vg.lv_get_origin(lv['name'])
lv_info['source_reference'] = {'source-name': origin}
entries.append(lv_info)
return volume_utils.paginate_entries_list(entries, marker, limit,
offset, sort_keys, sort_dirs)
def _add_manageable_volume(self, kv, manageable_volumes, cinder_ids):
cfg = kv['value']
if kv['key'].find('@') >= 0:
# snapshot
return
image_id = volume_utils.extract_id_from_volume_name(cfg['name'])
image_info = {
'reference': {
'source-name': image_name
},
'size': int(math.ceil(float(cfg['size']) / units.Gi)),
'cinder_id': None,
'extra_info': None,
}
if image_id in cinder_ids:
image_info['cinder_id'] = image_id
image_info['safe_to_manage'] = False
image_info['reason_not_safe'] = 'already managed'
else:
image_info['safe_to_manage'] = True
image_info['reason_not_safe'] = None
manageable_volumes.append(image_info)
def manage_existing(self, volume, existing_ref):
"""Manages an existing LV.
Renames the LV to match the expected name for the volume.
Error checking done by manage_existing_get_size is not repeated.
"""
lv_name = existing_ref['source-name']
self.vg.get_volume(lv_name)
vol_id = volume_utils.extract_id_from_volume_name(lv_name)
if volume_utils.check_already_managed_volume(vol_id):
raise exception.ManageExistingAlreadyManaged(volume_ref=lv_name)
# Attempt to rename the LV to match the OpenStack internal name.
try:
self.vg.rename_volume(lv_name, volume['name'])
except processutils.ProcessExecutionError as exc:
exception_message = (_("Failed to rename logical volume %(name)s, "
"error message was: %(err_msg)s") % {
'name': lv_name,
'err_msg': exc.stderr
})
raise exception.VolumeBackendAPIException(data=exception_message)
def _get_pool_stats(self, filter_function=None, goodness_function=None):
"""Retrieve pool (Data ONTAP flexvol) stats.
Pool statistics are assembled from static driver capabilities, the
Storage Service Catalog of flexvol attributes, and real-time capacity
and controller utilization metrics. The pool name is the flexvol name.
"""
pools = []
ssc = self.ssc_library.get_ssc()
if not ssc:
return pools
# Utilization and performance metrics require cluster-scoped
# credentials
if self.using_cluster_credentials:
# Get up-to-date node utilization metrics just once
self.perf_library.update_performance_cache(ssc)
# Get up-to-date aggregate capacities just once
aggregates = self.ssc_library.get_ssc_aggregates()
aggr_capacities = self.zapi_client.get_aggregate_capacities(
aggregates)
else:
aggr_capacities = {}
for ssc_vol_name, ssc_vol_info in ssc.items():
pool = dict()
# Add storage service catalog data
pool.update(ssc_vol_info)
# Add driver capabilities and config info
pool['QoS_support'] = self.using_cluster_credentials
pool['multiattach'] = True
pool['online_extend_support'] = True
pool['consistencygroup_support'] = True
pool['consistent_group_snapshot_enabled'] = True
pool['reserved_percentage'] = self.reserved_percentage
pool['max_over_subscription_ratio'] = (
self.max_over_subscription_ratio)
# Add up-to-date capacity info
capacity = self.zapi_client.get_flexvol_capacity(
flexvol_name=ssc_vol_name)
size_total_gb = capacity['size-total'] / units.Gi
pool['total_capacity_gb'] = na_utils.round_down(size_total_gb)
size_available_gb = capacity['size-available'] / units.Gi
pool['free_capacity_gb'] = na_utils.round_down(size_available_gb)
if self.configuration.netapp_driver_reports_provisioned_capacity:
luns = self.zapi_client.get_lun_sizes_by_volume(ssc_vol_name)
provisioned_cap = 0
for lun in luns:
lun_name = lun['path'].split('/')[-1]
# Filtering luns that matches the volume name template to
# exclude snapshots
if volume_utils.extract_id_from_volume_name(lun_name):
provisioned_cap = provisioned_cap + lun['size']
pool['provisioned_capacity_gb'] = na_utils.round_down(
float(provisioned_cap) / units.Gi)
if self.using_cluster_credentials:
dedupe_used = self.zapi_client.get_flexvol_dedupe_used_percent(
ssc_vol_name)
else:
dedupe_used = 0.0
pool['netapp_dedupe_used_percent'] = na_utils.round_down(
dedupe_used)
aggregate_name = ssc_vol_info.get('netapp_aggregate')
aggr_capacity = aggr_capacities.get(aggregate_name, {})
pool['netapp_aggregate_used_percent'] = aggr_capacity.get(
'percent-used', 0)
# Add utilization data
utilization = self.perf_library.get_node_utilization_for_pool(
ssc_vol_name)
pool['utilization'] = na_utils.round_down(utilization)
pool['filter_function'] = filter_function
pool['goodness_function'] = goodness_function
# Add replication capabilities/stats
pool.update(self.get_replication_backend_stats(self.configuration))
pools.append(pool)
return pools
