The cinder.volume.drivers.emc.emc_vmax_fc Module

class EMCVMAXFCDriver(*args, **kwargs)

Bases: cinder.volume.driver.FibreChannelDriver

EMC FC Drivers for VMAX using SMI-S.

Version history:

1.0.0 - Initial driver
1.1.0 - Multiple pools and thick/thin provisioning,
        performance enhancement.
2.0.0 - Add driver requirement functions
2.1.0 - Add consistency group functions
2.1.1 - Fixed issue with mismatched config (bug #1442376)
2.1.2 - Clean up failed clones (bug #1440154)
2.1.3 - Fixed a problem with FAST support (bug #1435069)
2.2.0 - Add manage/unmanage
2.2.1 - Support for SE 8.0.3
2.2.2 - Update Consistency Group
2.2.3 - Pool aware scheduler(multi-pool) support
2.2.4 - Create CG from CG snapshot
2.3.0 - Name change for MV and SG for FAST (bug #1515181)
      - Fix for randomly choosing port group. (bug #1501919)
      - get_short_host_name needs to be called in find_device_number
        (bug #1520635)
      - Proper error handling for invalid SLOs (bug #1512795)
      - Extend Volume for VMAX3, SE8.1.0.3
      https://blueprints.launchpad.net/cinder/+spec/vmax3-extend-volume
      - Incorrect SG selected on an attach (#1515176)
      - Cleanup Zoning (bug #1501938)  NOTE: FC only
      - Last volume in SG fix
      - _remove_last_vol_and_delete_sg is not being called
        for VMAX3 (bug #1520549)
      - necessary updates for CG changes (#1534616)
      - Changing PercentSynced to CopyState (bug #1517103)
      - Getting iscsi ip from port in existing masking view
      - Replacement of EMCGetTargetEndpoints api (bug #1512791)
      - VMAX3 snapvx improvements (bug #1522821)
      - Operations and timeout issues (bug #1538214)
2.4.0 - EMC VMAX - locking SG for concurrent threads (bug #1554634)
      - SnapVX licensing checks for VMAX3 (bug #1587017)
      - VMAX oversubscription Support (blueprint vmax-oversubscription)
      - QoS support (blueprint vmax-qos)

CI_WIKI_NAME = 'EMC_VMAX_CI'

VERSION = '2.4.0'

check_for_export(context, volume_id)

Make sure volume is exported.

check_for_setup_error()

create_cgsnapshot(context, cgsnapshot, snapshots)

Creates a cgsnapshot.

create_cloned_volume(volume, src_vref)

Creates a cloned volume.

create_consistencygroup(context, group)

Creates a consistencygroup.

create_consistencygroup_from_src(context, group, volumes, cgsnapshot=None, snapshots=None, source_cg=None, source_vols=None)

Creates the consistency group from source.

Currently the source can only be a cgsnapshot.

Parameters:

• context – the context
• group – the consistency group object to be created
• volumes – volumes in the consistency group
• cgsnapshot – the source consistency group snapshot
• snapshots – snapshots of the source volumes
• source_cg – the dictionary of a consistency group as source.
• source_vols – a list of volume dictionaries in the source_cg.

create_export(context, volume, connector)

Driver entry point to get the export info for a new volume.

create_snapshot(snapshot)

Creates a snapshot.

create_volume(volume)

Creates a EMC(VMAX/VNX) volume.

create_volume_from_snapshot(volume, snapshot)

Creates a volume from a snapshot.

delete_cgsnapshot(context, cgsnapshot, snapshots)

Deletes a cgsnapshot.

delete_consistencygroup(context, group, volumes)

Deletes a consistency group.

delete_snapshot(snapshot)

Deletes a snapshot.

delete_volume(volume)

Deletes an EMC volume.

ensure_export(context, volume)

Driver entry point to get the export info for an existing volume.

extend_volume(volume, new_size)

Extend an existing volume.

get_volume_stats(refresh=False)

Get volume stats.

Parameters:refresh – boolean – If True, run update the stats first. Returns:dict – the stats dict

initialize_connection(*args, **kwargs)

manage_existing(volume, external_ref)

Manages an existing VMAX Volume (import to Cinder).

Renames the Volume to match the expected name for the volume. Also need to consider things like QoS, Emulation, account/tenant.

manage_existing_get_size(volume, external_ref)

Return size of an existing VMAX volume to manage_existing.

Parameters:

• self – reference to class
• volume – the volume object including the volume_type_id
• external_ref – reference to the existing volume

Returns:

size of the volume in GB

migrate_volume(ctxt, volume, host)

Migrate a volume from one Volume Backend to another.

Parameters:

• ctxt – context
• volume – the volume object including the volume_type_id
• host – the host dict holding the relevant target(destination) information

Returns:

boolean – Always returns True

Returns:

dict – Empty dict {}

remove_export(context, volume)

Driver entry point to remove an export for a volume.

retype(ctxt, volume, new_type, diff, host)

Migrate volume to another host using retype.

Parameters:

• ctxt – context
• volume – the volume object including the volume_type_id
• new_type – the new volume type.
• diff – Unused parameter.
• host – the host dict holding the relevant target(destination) information

Returns:

boolean – True if retype succeeded, False if error

terminate_connection(*args, **kwargs)

unmanage(volume)

Export VMAX volume from Cinder.

Leave the volume intact on the backend array.

update_consistencygroup(context, group, add_volumes, remove_volumes)

Updates LUNs in consistency group.

update_volume_stats()

Retrieve stats info from volume group.