# Copyright (c) 2012 NetApp, Inc. # Copyright (c) 2012 OpenStack Foundation # All Rights Reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); you may # not use this file except in compliance with the License. You may obtain # a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the # License for the specific language governing permissions and limitations # under the License. """ Volume driver for NetApp iSCSI storage systems. This driver requires NetApp Clustered Data ONTAP or 7-mode storage systems with installed iSCSI licenses. """ import copy import math import sys import time import uuid from cinder import exception from cinder.openstack.common import excutils from cinder.openstack.common import log as logging from cinder.openstack.common import timeutils from cinder import units from cinder import utils from cinder.volume import driver from cinder.volume.drivers.netapp.api import NaApiError from cinder.volume.drivers.netapp.api import NaElement from cinder.volume.drivers.netapp.api import NaServer from cinder.volume.drivers.netapp.options import netapp_7mode_opts from cinder.volume.drivers.netapp.options import netapp_basicauth_opts from cinder.volume.drivers.netapp.options import netapp_cluster_opts from cinder.volume.drivers.netapp.options import netapp_connection_opts from cinder.volume.drivers.netapp.options import netapp_provisioning_opts from cinder.volume.drivers.netapp.options import netapp_transport_opts from cinder.volume.drivers.netapp import ssc_utils from cinder.volume.drivers.netapp.utils import get_volume_extra_specs from cinder.volume.drivers.netapp.utils import provide_ems from cinder.volume.drivers.netapp.utils import set_safe_attr from cinder.volume.drivers.netapp.utils import validate_instantiation LOG = logging.getLogger(__name__) class NetAppLun(object): """Represents a LUN on NetApp storage.""" def __init__(self, handle, name, size, metadata_dict): self.handle = handle self.name = name self.size = size self.metadata = metadata_dict or {} def get_metadata_property(self, prop): """Get the metadata property of a LUN.""" if prop in self.metadata: return self.metadata[prop] name = self.name msg = _("No metadata property %(prop)s defined for the" " LUN %(name)s") msg_fmt = {'prop': prop, 'name': name} LOG.debug(msg % msg_fmt) def __str__(self, *args, **kwargs): return 'NetApp Lun[handle:%s, name:%s, size:%s, metadata:%s]'\ % (self.handle, self.name, self.size, self.metadata) class NetAppDirectISCSIDriver(driver.ISCSIDriver): """NetApp Direct iSCSI volume driver.""" VERSION = "1.0.0" IGROUP_PREFIX = 'openstack-' required_flags = ['netapp_transport_type', 'netapp_login', 'netapp_password', 'netapp_server_hostname', 'netapp_server_port'] def __init__(self, *args, **kwargs): super(NetAppDirectISCSIDriver, self).__init__(*args, **kwargs) validate_instantiation(**kwargs) self.configuration.append_config_values(netapp_connection_opts) self.configuration.append_config_values(netapp_basicauth_opts) self.configuration.append_config_values(netapp_transport_opts) self.configuration.append_config_values(netapp_provisioning_opts) self.lun_table = {} def _create_client(self, **kwargs): """Instantiate a client for NetApp server. This method creates NetApp server client for api communication. """ host_filer = kwargs['hostname'] LOG.debug('Using NetApp filer: %s' % host_filer) self.client = NaServer(host=host_filer, server_type=NaServer.SERVER_TYPE_FILER, transport_type=kwargs['transport_type'], style=NaServer.STYLE_LOGIN_PASSWORD, username=kwargs['login'], password=kwargs['password']) def _do_custom_setup(self): """Does custom setup depending on the type of filer.""" raise NotImplementedError() def _check_flags(self): """Ensure that the flags we care about are set.""" required_flags = self.required_flags for flag in required_flags: if not getattr(self.configuration, flag, None): msg = _('%s is not set') % flag raise exception.InvalidInput(reason=msg) def do_setup(self, context): """Setup the NetApp Volume driver. Called one time by the manager after the driver is loaded. Validate the flags we care about and setup NetApp client. """ self._check_flags() self._create_client( transport_type=self.configuration.netapp_transport_type, login=self.configuration.netapp_login, password=self.configuration.netapp_password, hostname=self.configuration.netapp_server_hostname, port=self.configuration.netapp_server_port) self._do_custom_setup() def check_for_setup_error(self): """Check that the driver is working and can communicate. Discovers the LUNs on the NetApp server. """ self.lun_table = {} self._get_lun_list() LOG.debug("Success getting LUN list from server") def create_volume(self, volume): """Driver entry point for creating a new volume.""" default_size = '104857600' # 100 MB gigabytes = 1073741824L # 2^30 name = volume['name'] if int(volume['size']) == 0: size = default_size else: size = str(int(volume['size']) * gigabytes) metadata = {} metadata['OsType'] = 'linux' metadata['SpaceReserved'] = 'true' extra_specs = get_volume_extra_specs(volume) self._create_lun_on_eligible_vol(name, size, metadata, extra_specs) LOG.debug("Created LUN with name %s" % name) handle = self._create_lun_handle(metadata) self._add_lun_to_table(NetAppLun(handle, name, size, metadata)) def delete_volume(self, volume): """Driver entry point for destroying existing volumes.""" name = volume['name'] metadata = self._get_lun_attr(name, 'metadata') if not metadata: msg = _("No entry in LUN table for volume/snapshot %(name)s.") msg_fmt = {'name': name} LOG.warn(msg % msg_fmt) return self._destroy_lun(metadata['Path']) self.lun_table.pop(name) def _destroy_lun(self, path, force=True): """Destroys the lun at the path.""" lun_destroy = NaElement.create_node_with_children( 'lun-destroy', **{'path': path}) if force: lun_destroy.add_new_child('force', 'true') self.client.invoke_successfully(lun_destroy, True) seg = path.split("/") LOG.debug("Destroyed LUN %s" % seg[-1]) def ensure_export(self, context, volume): """Driver entry point to get the export info for an existing volume.""" handle = self._get_lun_attr(volume['name'], 'handle') return {'provider_location': handle} def create_export(self, context, volume): """Driver entry point to get the export info for a new volume.""" handle = self._get_lun_attr(volume['name'], 'handle') return {'provider_location': handle} def remove_export(self, context, volume): """Driver entry point to remove an export for a volume. Since exporting is idempotent in this driver, we have nothing to do for unexporting. """ pass def initialize_connection(self, volume, connector): """Driver entry point to attach a volume to an instance. Do the LUN masking on the storage system so the initiator can access the LUN on the target. Also return the iSCSI properties so the initiator can find the LUN. This implementation does not call _get_iscsi_properties() to get the properties because cannot store the LUN number in the database. We only find out what the LUN number will be during this method call so we construct the properties dictionary ourselves. """ initiator_name = connector['initiator'] name = volume['name'] lun_id = self._map_lun(name, initiator_name, 'iscsi', None) msg = _("Mapped LUN %(name)s to the initiator %(initiator_name)s") msg_fmt = {'name': name, 'initiator_name': initiator_name} LOG.debug(msg % msg_fmt) iqn = self._get_iscsi_service_details() target_details_list = self._get_target_details() msg = _("Successfully fetched target details for LUN %(name)s and " "initiator %(initiator_name)s") msg_fmt = {'name': name, 'initiator_name': initiator_name} LOG.debug(msg % msg_fmt) if not target_details_list: msg = _('Failed to get LUN target details for the LUN %s') raise exception.VolumeBackendAPIException(data=msg % name) target_details = None for tgt_detail in target_details_list: if tgt_detail.get('interface-enabled', 'true') == 'true': target_details = tgt_detail break if not target_details: target_details = target_details_list[0] if not target_details['address'] and target_details['port']: msg = _('Failed to get target portal for the LUN %s') raise exception.VolumeBackendAPIException(data=msg % name) if not iqn: msg = _('Failed to get target IQN for the LUN %s') raise exception.VolumeBackendAPIException(data=msg % name) properties = {} properties['target_discovered'] = False (address, port) = (target_details['address'], target_details['port']) properties['target_portal'] = '%s:%s' % (address, port) properties['target_iqn'] = iqn properties['target_lun'] = lun_id properties['volume_id'] = volume['id'] auth = volume['provider_auth'] if auth: (auth_method, auth_username, auth_secret) = auth.split() properties['auth_method'] = auth_method properties['auth_username'] = auth_username properties['auth_password'] = auth_secret return { 'driver_volume_type': 'iscsi', 'data': properties, } def create_snapshot(self, snapshot): """Driver entry point for creating a snapshot. This driver implements snapshots by using efficient single-file (LUN) cloning. """ vol_name = snapshot['volume_name'] snapshot_name = snapshot['name'] lun = self.lun_table[vol_name] self._clone_lun(lun.name, snapshot_name, 'false') def delete_snapshot(self, snapshot): """Driver entry point for deleting a snapshot.""" self.delete_volume(snapshot) LOG.debug("Snapshot %s deletion successful" % snapshot['name']) def create_volume_from_snapshot(self, volume, snapshot): """Driver entry point for creating a new volume from a snapshot. Many would call this "cloning" and in fact we use cloning to implement this feature. """ vol_size = volume['size'] snap_size = snapshot['volume_size'] snapshot_name = snapshot['name'] new_name = volume['name'] self._clone_lun(snapshot_name, new_name, 'true') if vol_size != snap_size: try: self.extend_volume(volume, volume['size']) except Exception: with excutils.save_and_reraise_exception(): LOG.error( _("Resizing %s failed. Cleaning volume."), new_name) self.delete_volume(volume) def terminate_connection(self, volume, connector, **kwargs): """Driver entry point to unattach a volume from an instance. Unmask the LUN on the storage system so the given initiator can no longer access it. """ initiator_name = connector['initiator'] name = volume['name'] metadata = self._get_lun_attr(name, 'metadata') path = metadata['Path'] self._unmap_lun(path, initiator_name) msg = _("Unmapped LUN %(name)s from the initiator " "%(initiator_name)s") msg_fmt = {'name': name, 'initiator_name': initiator_name} LOG.debug(msg % msg_fmt) def _get_ontapi_version(self): """Gets the supported ontapi version.""" ontapi_version = NaElement('system-get-ontapi-version') res = self.client.invoke_successfully(ontapi_version, False) major = res.get_child_content('major-version') minor = res.get_child_content('minor-version') return (major, minor) def _create_lun_on_eligible_vol(self, name, size, metadata, extra_specs=None): """Creates an actual lun on filer.""" raise NotImplementedError() def create_lun(self, volume, lun, size, metadata, qos_policy_group=None): """Issues api request for creating lun on volume.""" path = '/vol/%s/%s' % (volume, lun) lun_create = NaElement.create_node_with_children( 'lun-create-by-size', **{'path': path, 'size': size, 'ostype': metadata['OsType'], 'space-reservation-enabled': metadata['SpaceReserved']}) if qos_policy_group: lun_create.add_new_child('qos-policy-group', qos_policy_group) self.client.invoke_successfully(lun_create, True) def _get_iscsi_service_details(self): """Returns iscsi iqn.""" raise NotImplementedError() def _get_target_details(self): """Gets the target portal details.""" raise NotImplementedError() def _create_lun_handle(self, metadata): """Returns lun handle based on filer type.""" raise NotImplementedError() def _get_lun_list(self): """Gets the list of luns on filer.""" raise NotImplementedError() def _extract_and_populate_luns(self, api_luns): """Extracts the luns from api. Populates in the lun table. """ for lun in api_luns: meta_dict = self._create_lun_meta(lun) path = lun.get_child_content('path') (rest, splitter, name) = path.rpartition('/') handle = self._create_lun_handle(meta_dict) size = lun.get_child_content('size') discovered_lun = NetAppLun(handle, name, size, meta_dict) self._add_lun_to_table(discovered_lun) def _is_naelement(self, elem): """Checks if element is NetApp element.""" if not isinstance(elem, NaElement): raise ValueError('Expects NaElement') def _map_lun(self, name, initiator, initiator_type='iscsi', lun_id=None): """Maps lun to the initiator and returns lun id assigned.""" metadata = self._get_lun_attr(name, 'metadata') os = metadata['OsType'] path = metadata['Path'] if self._check_allowed_os(os): os = os else: os = 'default' igroup_name = self._get_or_create_igroup(initiator, initiator_type, os) lun_map = NaElement.create_node_with_children( 'lun-map', **{'path': path, 'initiator-group': igroup_name}) if lun_id: lun_map.add_new_child('lun-id', lun_id) try: result = self.client.invoke_successfully(lun_map, True) return result.get_child_content('lun-id-assigned') except NaApiError as e: code = e.code message = e.message msg = _('Error mapping lun. Code :%(code)s, Message:%(message)s') msg_fmt = {'code': code, 'message': message} exc_info = sys.exc_info() LOG.warn(msg % msg_fmt) (igroup, lun_id) = self._find_mapped_lun_igroup(path, initiator) if lun_id is not None: return lun_id else: raise exc_info[0], exc_info[1], exc_info[2] def _unmap_lun(self, path, initiator): """Unmaps a lun from given initiator.""" (igroup_name, lun_id) = self._find_mapped_lun_igroup(path, initiator) lun_unmap = NaElement.create_node_with_children( 'lun-unmap', **{'path': path, 'initiator-group': igroup_name}) try: self.client.invoke_successfully(lun_unmap, True) except NaApiError as e: msg = _("Error unmapping lun. Code :%(code)s," " Message:%(message)s") msg_fmt = {'code': e.code, 'message': e.message} exc_info = sys.exc_info() LOG.warn(msg % msg_fmt) # if the lun is already unmapped if e.code == '13115' or e.code == '9016': pass else: raise exc_info[0], exc_info[1], exc_info[2] def _find_mapped_lun_igroup(self, path, initiator, os=None): """Find the igroup for mapped lun with initiator.""" raise NotImplementedError() def _get_or_create_igroup(self, initiator, initiator_type='iscsi', os='default'): """Checks for an igroup for an initiator. Creates igroup if not found. """ igroups = self._get_igroup_by_initiator(initiator=initiator) igroup_name = None for igroup in igroups: if igroup['initiator-group-os-type'] == os: if igroup['initiator-group-type'] == initiator_type or \ igroup['initiator-group-type'] == 'mixed': if igroup['initiator-group-name'].startswith( self.IGROUP_PREFIX): igroup_name = igroup['initiator-group-name'] break if not igroup_name: igroup_name = self.IGROUP_PREFIX + str(uuid.uuid4()) self._create_igroup(igroup_name, initiator_type, os) self._add_igroup_initiator(igroup_name, initiator) return igroup_name def _get_igroup_by_initiator(self, initiator): """Get igroups by initiator.""" raise NotImplementedError() def _check_allowed_os(self, os): """Checks if the os type supplied is NetApp supported.""" if os in ['linux', 'aix', 'hpux', 'windows', 'solaris', 'netware', 'vmware', 'openvms', 'xen', 'hyper_v']: return True else: return False def _create_igroup(self, igroup, igroup_type='iscsi', os_type='default'): """Creates igroup with specified args.""" igroup_create = NaElement.create_node_with_children( 'igroup-create', **{'initiator-group-name': igroup, 'initiator-group-type': igroup_type, 'os-type': os_type}) self.client.invoke_successfully(igroup_create, True) def _add_igroup_initiator(self, igroup, initiator): """Adds initiators to the specified igroup.""" igroup_add = NaElement.create_node_with_children( 'igroup-add', **{'initiator-group-name': igroup, 'initiator': initiator}) self.client.invoke_successfully(igroup_add, True) def _add_lun_to_table(self, lun): """Adds LUN to cache table.""" if not isinstance(lun, NetAppLun): msg = _("Object is not a NetApp LUN.") raise exception.VolumeBackendAPIException(data=msg) self.lun_table[lun.name] = lun def _get_lun_from_table(self, name): """Gets LUN from cache table. Refreshes cache if lun not found in cache. """ lun = self.lun_table.get(name) if lun is None: self._get_lun_list() lun = self.lun_table.get(name) if lun is None: raise exception.VolumeNotFound(volume_id=name) return lun def _clone_lun(self, name, new_name, space_reserved='true', src_block=0, dest_block=0, block_count=0): """Clone LUN with the given name to the new name.""" raise NotImplementedError() def _get_lun_by_args(self, **args): """Retrieves luns with specified args.""" raise NotImplementedError() def _get_lun_attr(self, name, attr): """Get the lun attribute if found else None.""" try: attr = getattr(self._get_lun_from_table(name), attr) return attr except exception.VolumeNotFound as e: LOG.error(_("Message: %s"), e.msg) except Exception as e: LOG.error(_("Error getting lun attribute. Exception: %s"), e.__str__()) return None def _create_lun_meta(self, lun): raise NotImplementedError() def create_cloned_volume(self, volume, src_vref): """Creates a clone of the specified volume.""" vol_size = volume['size'] src_vol = self.lun_table[src_vref['name']] src_vol_size = src_vref['size'] new_name = volume['name'] self._clone_lun(src_vol.name, new_name, 'true') if vol_size != src_vol_size: try: self.extend_volume(volume, volume['size']) except Exception: with excutils.save_and_reraise_exception(): LOG.error( _("Resizing %s failed. Cleaning volume."), new_name) self.delete_volume(volume) def get_volume_stats(self, refresh=False): """Get volume stats. If 'refresh' is True, run update the stats first. """ if refresh: self._update_volume_stats() return self._stats def _update_volume_stats(self): """Retrieve stats info from volume group.""" raise NotImplementedError() def extend_volume(self, volume, new_size): """Extend an existing volume to the new size.""" name = volume['name'] path = self.lun_table[name].metadata['Path'] curr_size_bytes = str(self.lun_table[name].size) new_size_bytes = str(int(new_size) * units.GiB) # Reused by clone scenarios. # Hence comparing the stored size. if curr_size_bytes != new_size_bytes: lun_geometry = self._get_lun_geometry(path) if (lun_geometry and lun_geometry.get("max_resize") and int(lun_geometry.get("max_resize")) >= int(new_size_bytes)): self._do_direct_resize(path, new_size_bytes) else: self._do_sub_clone_resize(path, new_size_bytes) self.lun_table[name].size = new_size_bytes else: LOG.info(_("No need to extend volume %s" " as it is already the requested new size."), name) def _do_direct_resize(self, path, new_size_bytes, force=True): """Uses the resize api to resize the lun.""" seg = path.split("/") LOG.info(_("Resizing lun %s directly to new size."), seg[-1]) lun_resize = NaElement("lun-resize") lun_resize.add_new_child('path', path) lun_resize.add_new_child('size', new_size_bytes) if force: lun_resize.add_new_child('force', 'true') self.client.invoke_successfully(lun_resize, True) def _get_lun_geometry(self, path): """Gets the lun geometry.""" geometry = {} lun_geo = NaElement("lun-get-geometry") lun_geo.add_new_child('path', path) try: result = self.client.invoke_successfully(lun_geo, True) geometry['size'] = result.get_child_content("size") geometry['bytes_per_sector'] =\ result.get_child_content("bytes-per-sector") geometry['sectors_per_track'] =\ result.get_child_content("sectors-per-track") geometry['tracks_per_cylinder'] =\ result.get_child_content("tracks-per-cylinder") geometry['cylinders'] =\ result.get_child_content("cylinders") geometry['max_resize'] =\ result.get_child_content("max-resize-size") except Exception as e: LOG.error(_("Lun %(path)s geometry failed. Message - %(msg)s") % {'path': path, 'msg': e.message}) return geometry def _get_volume_options(self, volume_name): """Get the value for the volume option.""" opts = [] vol_option_list = NaElement("volume-options-list-info") vol_option_list.add_new_child('volume', volume_name) result = self.client.invoke_successfully(vol_option_list, True) options = result.get_child_by_name("options") if options: opts = options.get_children() return opts def _get_vol_option(self, volume_name, option_name): """Get the value for the volume option.""" value = None options = self._get_volume_options(volume_name) for opt in options: if opt.get_child_content('name') == option_name: value = opt.get_child_content('value') break return value def _move_lun(self, path, new_path): """Moves the lun at path to new path.""" seg = path.split("/") new_seg = new_path.split("/") LOG.debug("Moving lun %(name)s to %(new_name)s." % {'name': seg[-1], 'new_name': new_seg[-1]}) lun_move = NaElement("lun-move") lun_move.add_new_child("path", path) lun_move.add_new_child("new-path", new_path) self.client.invoke_successfully(lun_move, True) def _do_sub_clone_resize(self, path, new_size_bytes): """Does sub lun clone after verification. Clones the block ranges and swaps the luns also deletes older lun after a successful clone. """ seg = path.split("/") LOG.info(_("Resizing lun %s using sub clone to new size."), seg[-1]) name = seg[-1] vol_name = seg[2] lun = self.lun_table[name] metadata = lun.metadata compression = self._get_vol_option(vol_name, 'compression') if compression == "on": msg = _('%s cannot be sub clone resized' ' as it is hosted on compressed volume') raise exception.VolumeBackendAPIException(data=msg % name) else: block_count = self._get_lun_block_count(path) if block_count == 0: msg = _('%s cannot be sub clone resized' ' as it contains no blocks.') raise exception.VolumeBackendAPIException(data=msg % name) new_lun = 'new-%s' % (name) self.create_lun(vol_name, new_lun, new_size_bytes, metadata) try: self._clone_lun(name, new_lun, block_count=block_count) self._post_sub_clone_resize(path) except Exception: with excutils.save_and_reraise_exception(): new_path = '/vol/%s/%s' % (vol_name, new_lun) self._destroy_lun(new_path) def _post_sub_clone_resize(self, path): """Try post sub clone resize in a transactional manner.""" st_tm_mv, st_nw_mv, st_del_old = None, None, None seg = path.split("/") LOG.info(_("Post clone resize lun %s"), seg[-1]) new_lun = 'new-%s' % (seg[-1]) tmp_lun = 'tmp-%s' % (seg[-1]) tmp_path = "/vol/%s/%s" % (seg[2], tmp_lun) new_path = "/vol/%s/%s" % (seg[2], new_lun) try: st_tm_mv = self._move_lun(path, tmp_path) st_nw_mv = self._move_lun(new_path, path) st_del_old = self._destroy_lun(tmp_path) except Exception as e: if st_tm_mv is None: msg = _("Failure staging lun %s to tmp.") raise exception.VolumeBackendAPIException(data=msg % (seg[-1])) else: if st_nw_mv is None: self._move_lun(tmp_path, path) msg = _("Failure moving new cloned lun to %s.") raise exception.VolumeBackendAPIException( data=msg % (seg[-1])) elif st_del_old is None: LOG.error(_("Failure deleting staged tmp lun %s."), tmp_lun) else: LOG.error(_("Unknown exception in" " post clone resize lun %s."), seg[-1]) LOG.error(_("Exception details: %s") % (e.__str__())) def _get_lun_block_count(self, path): """Gets block counts for the lun.""" LOG.debug("Getting lun block count.") block_count = 0 lun_infos = self._get_lun_by_args(path=path) if not lun_infos: seg = path.split('/') msg = _('Failure getting lun info for %s.') raise exception.VolumeBackendAPIException(data=msg % seg[-1]) lun_info = lun_infos[-1] bs = int(lun_info.get_child_content('block-size')) ls = int(lun_info.get_child_content('size')) block_count = ls / bs return block_count class NetAppDirectCmodeISCSIDriver(NetAppDirectISCSIDriver): """NetApp C-mode iSCSI volume driver.""" DEFAULT_VS = 'openstack' def __init__(self, *args, **kwargs): super(NetAppDirectCmodeISCSIDriver, self).__init__(*args, **kwargs) self.configuration.append_config_values(netapp_cluster_opts) def _do_custom_setup(self): """Does custom setup for ontap cluster.""" self.vserver = self.configuration.netapp_vserver self.vserver = self.vserver if self.vserver else self.DEFAULT_VS # We set vserver in client permanently. # To use tunneling enable_tunneling while invoking api self.client.set_vserver(self.vserver) # Default values to run first api self.client.set_api_version(1, 15) (major, minor) = self._get_ontapi_version() self.client.set_api_version(major, minor) self.ssc_vols = None self.stale_vols = set() def check_for_setup_error(self): """Check that the driver is working and can communicate.""" ssc_utils.check_ssc_api_permissions(self.client) super(NetAppDirectCmodeISCSIDriver, self).check_for_setup_error() def _create_lun_on_eligible_vol(self, name, size, metadata, extra_specs=None): """Creates an actual lun on filer.""" req_size = float(size) *\ float(self.configuration.netapp_size_multiplier) qos_policy_group = None if extra_specs: qos_policy_group = extra_specs.pop('netapp:qos_policy_group', None) volumes = self._get_avl_volumes(req_size, extra_specs) if not volumes: msg = _('Failed to get vol with required' ' size and extra specs for volume: %s') raise exception.VolumeBackendAPIException(data=msg % name) for volume in volumes: try: self.create_lun(volume.id['name'], name, size, metadata, qos_policy_group=qos_policy_group) metadata['Path'] = '/vol/%s/%s' % (volume.id['name'], name) metadata['Volume'] = volume.id['name'] metadata['Qtree'] = None return except NaApiError as ex: msg = _("Error provisioning vol %(name)s on " "%(volume)s. Details: %(ex)s") LOG.error(msg % {'name': name, 'volume': volume.id['name'], 'ex': ex}) finally: self._update_stale_vols(volume=volume) def _get_avl_volumes(self, size, extra_specs=None): """Get the available volume by size, extra_specs.""" result = [] volumes = ssc_utils.get_volumes_for_specs( self.ssc_vols, extra_specs) if volumes: sorted_vols = sorted(volumes, reverse=True) for vol in sorted_vols: if int(vol.space['size_avl_bytes']) >= int(size): result.append(vol) return result def _get_target_details(self): """Gets the target portal details.""" iscsi_if_iter = NaElement('iscsi-interface-get-iter') result = self.client.invoke_successfully(iscsi_if_iter, True) tgt_list = [] if result.get_child_content('num-records')\ and int(result.get_child_content('num-records')) >= 1: attr_list = result.get_child_by_name('attributes-list') iscsi_if_list = attr_list.get_children() for iscsi_if in iscsi_if_list: d = dict() d['address'] = iscsi_if.get_child_content('ip-address') d['port'] = iscsi_if.get_child_content('ip-port') d['tpgroup-tag'] = iscsi_if.get_child_content('tpgroup-tag') d['interface-enabled'] = iscsi_if.get_child_content( 'is-interface-enabled') tgt_list.append(d) return tgt_list def _get_iscsi_service_details(self): """Returns iscsi iqn.""" iscsi_service_iter = NaElement('iscsi-service-get-iter') result = self.client.invoke_successfully(iscsi_service_iter, True) if result.get_child_content('num-records') and\ int(result.get_child_content('num-records')) >= 1: attr_list = result.get_child_by_name('attributes-list') iscsi_service = attr_list.get_child_by_name('iscsi-service-info') return iscsi_service.get_child_content('node-name') LOG.debug('No iscsi service found for vserver %s' % (self.vserver)) return None def _create_lun_handle(self, metadata): """Returns lun handle based on filer type.""" return '%s:%s' % (self.vserver, metadata['Path']) def _get_lun_list(self): """Gets the list of luns on filer. Gets the luns from cluster with vserver. """ tag = None while True: api = NaElement('lun-get-iter') api.add_new_child('max-records', '100') if tag: api.add_new_child('tag', tag, True) lun_info = NaElement('lun-info') lun_info.add_new_child('vserver', self.vserver) query = NaElement('query') query.add_child_elem(lun_info) api.add_child_elem(query) result = self.client.invoke_successfully(api) if result.get_child_by_name('num-records') and\ int(result.get_child_content('num-records')) >= 1: attr_list = result.get_child_by_name('attributes-list') self._extract_and_populate_luns(attr_list.get_children()) tag = result.get_child_content('next-tag') if tag is None: break def _find_mapped_lun_igroup(self, path, initiator, os=None): """Find the igroup for mapped lun with initiator.""" initiator_igroups = self._get_igroup_by_initiator(initiator=initiator) lun_maps = self._get_lun_map(path) if initiator_igroups and lun_maps: for igroup in initiator_igroups: igroup_name = igroup['initiator-group-name'] if igroup_name.startswith(self.IGROUP_PREFIX): for lun_map in lun_maps: if lun_map['initiator-group'] == igroup_name: return (igroup_name, lun_map['lun-id']) return (None, None) def _get_lun_map(self, path): """Gets the lun map by lun path.""" tag = None map_list = [] while True: lun_map_iter = NaElement('lun-map-get-iter') lun_map_iter.add_new_child('max-records', '100') if tag: lun_map_iter.add_new_child('tag', tag, True) query = NaElement('query') lun_map_iter.add_child_elem(query) query.add_node_with_children('lun-map-info', **{'path': path}) result = self.client.invoke_successfully(lun_map_iter, True) tag = result.get_child_content('next-tag') if result.get_child_content('num-records') and \ int(result.get_child_content('num-records')) >= 1: attr_list = result.get_child_by_name('attributes-list') lun_maps = attr_list.get_children() for lun_map in lun_maps: lun_m = dict() lun_m['initiator-group'] = lun_map.get_child_content( 'initiator-group') lun_m['lun-id'] = lun_map.get_child_content('lun-id') lun_m['vserver'] = lun_map.get_child_content('vserver') map_list.append(lun_m) if tag is None: break return map_list def _get_igroup_by_initiator(self, initiator): """Get igroups by initiator.""" tag = None igroup_list = [] while True: igroup_iter = NaElement('igroup-get-iter') igroup_iter.add_new_child('max-records', '100') if tag: igroup_iter.add_new_child('tag', tag, True) query = NaElement('query') igroup_iter.add_child_elem(query) igroup_info = NaElement('initiator-group-info') query.add_child_elem(igroup_info) igroup_info.add_new_child('vserver', self.vserver) initiators = NaElement('initiators') igroup_info.add_child_elem(initiators) initiators.add_node_with_children('initiator-info', **{'initiator-name': initiator}) des_attrs = NaElement('desired-attributes') des_ig_info = NaElement('initiator-group-info') des_attrs.add_child_elem(des_ig_info) des_ig_info.add_node_with_children('initiators', **{'initiator-info': None}) des_ig_info.add_new_child('vserver', None) des_ig_info.add_new_child('initiator-group-name', None) des_ig_info.add_new_child('initiator-group-type', None) des_ig_info.add_new_child('initiator-group-os-type', None) igroup_iter.add_child_elem(des_attrs) result = self.client.invoke_successfully(igroup_iter, False) tag = result.get_child_content('next-tag') if result.get_child_content('num-records') and\ int(result.get_child_content('num-records')) > 0: attr_list = result.get_child_by_name('attributes-list') igroups = attr_list.get_children() for igroup in igroups: ig = dict() ig['initiator-group-os-type'] = igroup.get_child_content( 'initiator-group-os-type') ig['initiator-group-type'] = igroup.get_child_content( 'initiator-group-type') ig['initiator-group-name'] = igroup.get_child_content( 'initiator-group-name') igroup_list.append(ig) if tag is None: break return igroup_list def _clone_lun(self, name, new_name, space_reserved='true', src_block=0, dest_block=0, block_count=0): """Clone LUN with the given handle to the new name.""" metadata = self._get_lun_attr(name, 'metadata') volume = metadata['Volume'] # zAPI can only handle 2^24 blocks per range bc_limit = 2 ** 24 # 8GB # zAPI can only handle 32 block ranges per call br_limit = 32 z_limit = br_limit * bc_limit # 256 GB z_calls = int(math.ceil(block_count / float(z_limit))) zbc = block_count if z_calls == 0: z_calls = 1 for call in range(0, z_calls): if zbc > z_limit: block_count = z_limit zbc -= z_limit else: block_count = zbc clone_create = NaElement.create_node_with_children( 'clone-create', **{'volume': volume, 'source-path': name, 'destination-path': new_name, 'space-reserve': space_reserved}) if block_count > 0: block_ranges = NaElement("block-ranges") segments = int(math.ceil(block_count / float(bc_limit))) bc = block_count for segment in range(0, segments): if bc > bc_limit: block_count = bc_limit bc -= bc_limit else: block_count = bc block_range = NaElement.create_node_with_children( 'block-range', **{'source-block-number': str(src_block), 'destination-block-number': str(dest_block), 'block-count': str(block_count)}) block_ranges.add_child_elem(block_range) src_block += int(block_count) dest_block += int(block_count) clone_create.add_child_elem(block_ranges) self.client.invoke_successfully(clone_create, True) LOG.debug("Cloned LUN with new name %s" % new_name) lun = self._get_lun_by_args(vserver=self.vserver, path='/vol/%s/%s' % (volume, new_name)) if len(lun) == 0: msg = _("No cloned lun named %s found on the filer") raise exception.VolumeBackendAPIException(data=msg % (new_name)) clone_meta = self._create_lun_meta(lun[0]) self._add_lun_to_table(NetAppLun('%s:%s' % (clone_meta['Vserver'], clone_meta['Path']), new_name, lun[0].get_child_content('size'), clone_meta)) self._update_stale_vols( volume=ssc_utils.NetAppVolume(volume, self.vserver)) def _get_lun_by_args(self, **args): """Retrieves lun with specified args.""" lun_iter = NaElement('lun-get-iter') lun_iter.add_new_child('max-records', '100') query = NaElement('query') lun_iter.add_child_elem(query) query.add_node_with_children('lun-info', **args) luns = self.client.invoke_successfully(lun_iter) attr_list = luns.get_child_by_name('attributes-list') return attr_list.get_children() def _create_lun_meta(self, lun): """Creates lun metadata dictionary.""" self._is_naelement(lun) meta_dict = {} self._is_naelement(lun) meta_dict['Vserver'] = lun.get_child_content('vserver') meta_dict['Volume'] = lun.get_child_content('volume') meta_dict['Qtree'] = lun.get_child_content('qtree') meta_dict['Path'] = lun.get_child_content('path') meta_dict['OsType'] = lun.get_child_content('multiprotocol-type') meta_dict['SpaceReserved'] = \ lun.get_child_content('is-space-reservation-enabled') return meta_dict def _configure_tunneling(self, do_tunneling=False): """Configures tunneling for ontap cluster.""" if do_tunneling: self.client.set_vserver(self.vserver) else: self.client.set_vserver(None) def _update_volume_stats(self): """Retrieve stats info from volume group.""" LOG.debug("Updating volume stats") data = {} netapp_backend = 'NetApp_iSCSI_Cluster_direct' backend_name = self.configuration.safe_get('volume_backend_name') data["volume_backend_name"] = ( backend_name or netapp_backend) data["vendor_name"] = 'NetApp' data["driver_version"] = '1.0' data["storage_protocol"] = 'iSCSI' data['total_capacity_gb'] = 0 data['free_capacity_gb'] = 0 data['reserved_percentage'] = 0 data['QoS_support'] = False self._update_cluster_vol_stats(data) provide_ems(self, self.client, data, netapp_backend) self._stats = data def _update_cluster_vol_stats(self, data): """Updates vol stats with cluster config.""" sync = True if self.ssc_vols is None else False ssc_utils.refresh_cluster_ssc(self, self.client, self.vserver, synchronous=sync) if self.ssc_vols: data['netapp_mirrored'] = 'true'\ if self.ssc_vols['mirrored'] else 'false' data['netapp_unmirrored'] = 'true'\ if len(self.ssc_vols['all']) > len(self.ssc_vols['mirrored'])\ else 'false' data['netapp_dedup'] = 'true'\ if self.ssc_vols['dedup'] else 'false' data['netapp_nodedup'] = 'true'\ if len(self.ssc_vols['all']) > len(self.ssc_vols['dedup'])\ else 'false' data['netapp_compression'] = 'true'\ if self.ssc_vols['compression'] else 'false' data['netapp_nocompression'] = 'true'\ if len(self.ssc_vols['all']) >\ len(self.ssc_vols['compression'])\ else 'false' data['netapp_thin_provisioned'] = 'true'\ if self.ssc_vols['thin'] else 'false' data['netapp_thick_provisioned'] = 'true'\ if len(self.ssc_vols['all']) >\ len(self.ssc_vols['thin']) else 'false' if self.ssc_vols['all']: vol_max = max(self.ssc_vols['all']) data['total_capacity_gb'] =\ int(vol_max.space['size_total_bytes']) / units.GiB data['free_capacity_gb'] =\ int(vol_max.space['size_avl_bytes']) / units.GiB else: data['total_capacity_gb'] = 0 data['free_capacity_gb'] = 0 else: LOG.warn(_("Cluster ssc is not updated. No volume stats found.")) @utils.synchronized('update_stale') def _update_stale_vols(self, volume=None, reset=False): """Populates stale vols with vol and returns set copy if reset.""" if volume: self.stale_vols.add(volume) if reset: set_copy = copy.deepcopy(self.stale_vols) self.stale_vols.clear() return set_copy @utils.synchronized("refresh_ssc_vols") def refresh_ssc_vols(self, vols): """Refreshes ssc_vols with latest entries.""" self.ssc_vols = vols def delete_volume(self, volume): """Driver entry point for destroying existing volumes.""" lun = self.lun_table.get(volume['name']) netapp_vol = None if lun: netapp_vol = lun.get_metadata_property('Volume') super(NetAppDirectCmodeISCSIDriver, self).delete_volume(volume) if netapp_vol: self._update_stale_vols( volume=ssc_utils.NetAppVolume(netapp_vol, self.vserver)) class NetAppDirect7modeISCSIDriver(NetAppDirectISCSIDriver): """NetApp 7-mode iSCSI volume driver.""" def __init__(self, *args, **kwargs): super(NetAppDirect7modeISCSIDriver, self).__init__(*args, **kwargs) self.configuration.append_config_values(netapp_7mode_opts) def _do_custom_setup(self): """Does custom setup depending on the type of filer.""" self.vfiler = self.configuration.netapp_vfiler self.volume_list = self.configuration.netapp_volume_list if self.volume_list: self.volume_list = self.volume_list.split(',') self.volume_list = [el.strip() for el in self.volume_list] (major, minor) = self._get_ontapi_version() self.client.set_api_version(major, minor) if self.vfiler: self.client.set_vfiler(self.vfiler) self.vol_refresh_time = None self.vol_refresh_interval = 1800 self.vol_refresh_running = False self.vol_refresh_voluntary = False # Setting it infinite at set up # This will not rule out backend from scheduling self.total_gb = 'infinite' self.free_gb = 'infinite' def check_for_setup_error(self): """Check that the driver is working and can communicate.""" api_version = self.client.get_api_version() if api_version: major, minor = api_version if major == 1 and minor < 9: msg = _("Unsupported ONTAP version." " ONTAP version 7.3.1 and above is supported.") raise exception.VolumeBackendAPIException(data=msg) else: msg = _("Api version could not be determined.") raise exception.VolumeBackendAPIException(data=msg) super(NetAppDirect7modeISCSIDriver, self).check_for_setup_error() def _create_lun_on_eligible_vol(self, name, size, metadata, extra_specs=None): """Creates an actual lun on filer.""" req_size = float(size) *\ float(self.configuration.netapp_size_multiplier) volume = self._get_avl_volume_by_size(req_size) if not volume: msg = _('Failed to get vol with required size for volume: %s') raise exception.VolumeBackendAPIException(data=msg % name) self.create_lun(volume['name'], name, size, metadata) metadata['Path'] = '/vol/%s/%s' % (volume['name'], name) metadata['Volume'] = volume['name'] metadata['Qtree'] = None self.vol_refresh_voluntary = True def _get_filer_volumes(self, volume=None): """Returns list of filer volumes in api format.""" vol_request = NaElement('volume-list-info') if volume: vol_request.add_new_child('volume', volume) res = self.client.invoke_successfully(vol_request, True) volumes = res.get_child_by_name('volumes') if volumes: return volumes.get_children() return [] def _get_avl_volume_by_size(self, size): """Get the available volume by size.""" vols = self._get_filer_volumes() for vol in vols: avl_size = vol.get_child_content('size-available') state = vol.get_child_content('state') if float(avl_size) >= float(size) and state == 'online': avl_vol = dict() avl_vol['name'] = vol.get_child_content('name') avl_vol['block-type'] = vol.get_child_content('block-type') avl_vol['type'] = vol.get_child_content('type') avl_vol['size-available'] = avl_size if self.volume_list: if avl_vol['name'] in self.volume_list: return avl_vol elif self._get_vol_option(avl_vol['name'], 'root') != 'true': return avl_vol return None def _get_igroup_by_initiator(self, initiator): """Get igroups by initiator.""" igroup_list = NaElement('igroup-list-info') result = self.client.invoke_successfully(igroup_list, True) igroups = [] igs = result.get_child_by_name('initiator-groups') if igs: ig_infos = igs.get_children() if ig_infos: for info in ig_infos: initiators = info.get_child_by_name('initiators') init_infos = initiators.get_children() if init_infos: for init in init_infos: if init.get_child_content('initiator-name')\ == initiator: d = dict() d['initiator-group-os-type'] = \ info.get_child_content( 'initiator-group-os-type') d['initiator-group-type'] = \ info.get_child_content( 'initiator-group-type') d['initiator-group-name'] = \ info.get_child_content( 'initiator-group-name') igroups.append(d) return igroups def _get_target_details(self): """Gets the target portal details.""" iscsi_if_iter = NaElement('iscsi-portal-list-info') result = self.client.invoke_successfully(iscsi_if_iter, True) tgt_list = [] portal_list_entries = result.get_child_by_name( 'iscsi-portal-list-entries') if portal_list_entries: portal_list = portal_list_entries.get_children() for iscsi_if in portal_list: d = dict() d['address'] = iscsi_if.get_child_content('ip-address') d['port'] = iscsi_if.get_child_content('ip-port') d['tpgroup-tag'] = iscsi_if.get_child_content('tpgroup-tag') tgt_list.append(d) return tgt_list def _get_iscsi_service_details(self): """Returns iscsi iqn.""" iscsi_service_iter = NaElement('iscsi-node-get-name') result = self.client.invoke_successfully(iscsi_service_iter, True) return result.get_child_content('node-name') def _create_lun_handle(self, metadata): """Returns lun handle based on filer type.""" if self.vfiler: owner = '%s:%s' % (self.configuration.netapp_server_hostname, self.vfiler) else: owner = self.configuration.netapp_server_hostname return '%s:%s' % (owner, metadata['Path']) def _get_lun_list(self): """Gets the list of luns on filer.""" lun_list = [] if self.volume_list: for vol in self.volume_list: try: luns = self._get_vol_luns(vol) if luns: lun_list.extend(luns) except NaApiError: LOG.warn(_("Error finding luns for volume %s." " Verify volume exists.") % (vol)) else: luns = self._get_vol_luns(None) lun_list.extend(luns) self._extract_and_populate_luns(lun_list) def _get_vol_luns(self, vol_name): """Gets the luns for a volume.""" api = NaElement('lun-list-info') if vol_name: api.add_new_child('volume-name', vol_name) result = self.client.invoke_successfully(api, True) luns = result.get_child_by_name('luns') return luns.get_children() def _find_mapped_lun_igroup(self, path, initiator, os=None): """Find the igroup for mapped lun with initiator.""" lun_map_list = NaElement.create_node_with_children( 'lun-map-list-info', **{'path': path}) result = self.client.invoke_successfully(lun_map_list, True) igroups = result.get_child_by_name('initiator-groups') if igroups: igroup = None lun_id = None found = False igroup_infs = igroups.get_children() for ig in igroup_infs: initiators = ig.get_child_by_name('initiators') init_infs = initiators.get_children() for info in init_infs: if info.get_child_content('initiator-name') == initiator: found = True igroup = ig.get_child_content('initiator-group-name') lun_id = ig.get_child_content('lun-id') break if found: break return (igroup, lun_id) def _clone_lun(self, name, new_name, space_reserved='true', src_block=0, dest_block=0, block_count=0): """Clone LUN with the given handle to the new name.""" metadata = self._get_lun_attr(name, 'metadata') path = metadata['Path'] (parent, splitter, name) = path.rpartition('/') clone_path = '%s/%s' % (parent, new_name) # zAPI can only handle 2^24 blocks per range bc_limit = 2 ** 24 # 8GB # zAPI can only handle 32 block ranges per call br_limit = 32 z_limit = br_limit * bc_limit # 256 GB z_calls = int(math.ceil(block_count / float(z_limit))) zbc = block_count if z_calls == 0: z_calls = 1 for call in range(0, z_calls): if zbc > z_limit: block_count = z_limit zbc -= z_limit else: block_count = zbc clone_start = NaElement.create_node_with_children( 'clone-start', **{'source-path': path, 'destination-path': clone_path, 'no-snap': 'true'}) if block_count > 0: block_ranges = NaElement("block-ranges") # zAPI can only handle 2^24 block ranges bc_limit = 2 ** 24 # 8GB segments = int(math.ceil(block_count / float(bc_limit))) bc = block_count for segment in range(0, segments): if bc > bc_limit: block_count = bc_limit bc -= bc_limit else: block_count = bc block_range = NaElement.create_node_with_children( 'block-range', **{'source-block-number': str(src_block), 'destination-block-number': str(dest_block), 'block-count': str(block_count)}) block_ranges.add_child_elem(block_range) src_block += int(block_count) dest_block += int(block_count) clone_start.add_child_elem(block_ranges) result = self.client.invoke_successfully(clone_start, True) clone_id_el = result.get_child_by_name('clone-id') cl_id_info = clone_id_el.get_child_by_name('clone-id-info') vol_uuid = cl_id_info.get_child_content('volume-uuid') clone_id = cl_id_info.get_child_content('clone-op-id') if vol_uuid: self._check_clone_status(clone_id, vol_uuid, name, new_name) self.vol_refresh_voluntary = True luns = self._get_lun_by_args(path=clone_path) if luns: cloned_lun = luns[0] self._set_space_reserve(clone_path, space_reserved) clone_meta = self._create_lun_meta(cloned_lun) handle = self._create_lun_handle(clone_meta) self._add_lun_to_table( NetAppLun(handle, new_name, cloned_lun.get_child_content('size'), clone_meta)) else: raise NaApiError('ENOLUNENTRY', 'No Lun entry found on the filer') def _set_space_reserve(self, path, enable): """Sets the space reserve info.""" space_res = NaElement.create_node_with_children( 'lun-set-space-reservation-info', **{'path': path, 'enable': enable}) self.client.invoke_successfully(space_res, True) def _check_clone_status(self, clone_id, vol_uuid, name, new_name): """Checks for the job till completed.""" clone_status = NaElement('clone-list-status') cl_id = NaElement('clone-id') clone_status.add_child_elem(cl_id) cl_id.add_node_with_children( 'clone-id-info', **{'clone-op-id': clone_id, 'volume-uuid': vol_uuid}) running = True clone_ops_info = None while running: result = self.client.invoke_successfully(clone_status, True) status = result.get_child_by_name('status') ops_info = status.get_children() if ops_info: for info in ops_info: if info.get_child_content('clone-state') == 'running': time.sleep(1) break else: running = False clone_ops_info = info break else: if clone_ops_info: fmt = {'name': name, 'new_name': new_name} if clone_ops_info.get_child_content('clone-state')\ == 'completed': LOG.debug("Clone operation with src %(name)s" " and dest %(new_name)s completed" % fmt) else: LOG.debug("Clone operation with src %(name)s" " and dest %(new_name)s failed" % fmt) raise NaApiError( clone_ops_info.get_child_content('error'), clone_ops_info.get_child_content('reason')) def _get_lun_by_args(self, **args): """Retrieves luns with specified args.""" lun_info = NaElement.create_node_with_children('lun-list-info', **args) result = self.client.invoke_successfully(lun_info, True) luns = result.get_child_by_name('luns') return luns.get_children() def _create_lun_meta(self, lun): """Creates lun metadata dictionary.""" self._is_naelement(lun) meta_dict = {} self._is_naelement(lun) meta_dict['Path'] = lun.get_child_content('path') meta_dict['OsType'] = lun.get_child_content('multiprotocol-type') meta_dict['SpaceReserved'] = lun.get_child_content( 'is-space-reservation-enabled') return meta_dict def _update_volume_stats(self): """Retrieve status info from volume group.""" LOG.debug("Updating volume stats") data = {} netapp_backend = 'NetApp_iSCSI_7mode_direct' backend_name = self.configuration.safe_get('volume_backend_name') data["volume_backend_name"] = ( backend_name or 'NetApp_iSCSI_7mode_direct') data["vendor_name"] = 'NetApp' data["driver_version"] = self.VERSION data["storage_protocol"] = 'iSCSI' data['reserved_percentage'] = 0 data['QoS_support'] = False self._get_capacity_info(data) provide_ems(self, self.client, data, netapp_backend, server_type="7mode") self._stats = data def _get_lun_block_count(self, path): """Gets block counts for the lun.""" bs = super( NetAppDirect7modeISCSIDriver, self)._get_lun_block_count(path) api_version = self.client.get_api_version() if api_version: major = api_version[0] minor = api_version[1] if major == 1 and minor < 15: bs = bs - 1 return bs def _get_capacity_info(self, data): """Calculates the capacity information for the filer.""" if (self.vol_refresh_time is None or self.vol_refresh_voluntary or timeutils.is_newer_than(self.vol_refresh_time, self.vol_refresh_interval)): try: job_set = set_safe_attr(self, 'vol_refresh_running', True) if not job_set: LOG.warn( _("Volume refresh job already running. Returning...")) return self.vol_refresh_voluntary = False self._refresh_capacity_info() self.vol_refresh_time = timeutils.utcnow() except Exception as e: LOG.warn(_("Error refreshing vol capacity. Message: %s"), e) finally: set_safe_attr(self, 'vol_refresh_running', False) data['total_capacity_gb'] = self.total_gb data['free_capacity_gb'] = self.free_gb def _refresh_capacity_info(self): """Gets the latest capacity information.""" LOG.info(_("Refreshing capacity info for %s."), self.client) total_bytes = 0 free_bytes = 0 vols = self._get_filer_volumes() for vol in vols: volume = vol.get_child_content('name') if self.volume_list and not volume in self.volume_list: continue state = vol.get_child_content('state') inconsistent = vol.get_child_content('is-inconsistent') invalid = vol.get_child_content('is-invalid') if (state == 'online' and inconsistent == 'false' and invalid == 'false'): total_size = vol.get_child_content('size-total') if total_size: total_bytes = total_bytes + int(total_size) avl_size = vol.get_child_content('size-available') if avl_size: free_bytes = free_bytes + int(avl_size) self.total_gb = total_bytes / units.GiB self.free_gb = free_bytes / units.GiB def delete_volume(self, volume): """Driver entry point for destroying existing volumes.""" super(NetAppDirect7modeISCSIDriver, self).delete_volume(volume) self.vol_refresh_voluntary = True