The cinder.volume.drivers.dell_emc.vnx.utils Module¶

build_provider_location(system, lun_type, lun_id, base_lun_name, version)¶

Builds provider_location for volume or snapshot.

Parameters:	system – VNX serial number lun_id – LUN ID in VNX lun_type – ‘lun’ or ‘smp’ base_lun_name – primary LUN name, it will be used when creating snap lun version – driver version

calc_migrate_and_provision(volume)¶

Returns a tuple of async migrate and provision type.

The first element is the flag whether to enable async migrate, the second is the provision type (thin or thick).

check_rep_status_matched(group)¶

Check replication status for group.

Group status must be enabled before proceeding.

check_type_matched(volume)¶

Check volume type and group type

This will make sure they do not conflict with each other.

Parameters:	volume – volume to be checked
Returns:	None
Raises:	InvalidInput

construct_group_name(group)¶

Constructs MirrorGroup name for volumes.

VNX only allows for 32-character group name, so trim the dash(-) from group id.

construct_mirror_name(volume)¶

Constructs MirrorView name for volume.

construct_smp_name(snap_id)¶

construct_snap_name(volume)¶

Return snapshot name.

construct_tmp_cg_snap_name(cg_name)¶

Return CG snapshot name.

construct_tmp_lun_name(lun_name)¶

Constructs a time-based temporary LUN name.

convert_to_tgt_list_and_itor_tgt_map(zone_mapping)¶

Function to process data from lookup service.

Parameters:	zone_mapping – mapping is the data from the zone lookup service with below format { <San name>: { ‘initiator_port_wwn_list’: (‘200000051e55a100’, ‘200000051e55a121’..) ‘target_port_wwn_list’: (‘100000051e55a100’, ‘100000051e55a121’..) } }

dump_provider_location(location_dict)¶

extract_provider_location(provider_location, key)¶

Extracts value of the specified field from provider_location string.

Parameters:	provider_location – provider_location string key – field name of the value that to be extracted
Returns:	value of the specified field if it exists, otherwise, None is returned

get_backend_qos_specs(volume)¶

get_base_lun_name(volume)¶

Returns base LUN name for LUN/snapcopy LUN.

get_metadata(volume)¶

get_migration_rate(volume)¶

get_original_status(volume)¶

get_pool_from_host(host)¶

get_remote_pool(config, volume)¶

Select remote pool name for replication.

Prefer configured remote pool name, or same pool name as the source volume.

init_ops(configuration)¶

is_async_migrate_enabled(volume)¶

is_image_cache_volume(volume)¶

is_snapcopy_enabled(volume)¶

is_volume_smp(volume)¶

require_consistent_group_snapshot_enabled(func)¶

retype_need_change_tier(old_tier, new_tier)¶

retype_need_migration(volume, old_provision, new_provision, host)¶

retype_need_turn_on_compression(old_provision, new_provision)¶

sift_port_white_list(port_white_list, registered_io_ports)¶

Filters out the unregistered ports.

Goes through the port_white_list, and filters out the ones not registered (that is not in registered_io_ports).

truncate_fc_port_wwn(wwn)¶

update_provider_location(provider_location, items)¶

Updates provider_location with new dict items.

Parameters:	provider_location – volume’s provider_location. items – dict items for updating.

update_remote_provider_location(volume, client)¶

Update volume provider_location after volume failed-over.

update_res_with_poll(res)¶

update_res_without_poll(res)¶

validate_storage_migration(volume, target_host, src_serial, src_protocol)¶

wait_until(condition, timeout=None, interval=5, reraise_arbiter=<function <lambda>>, *args, **kwargs)¶