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Taikun OCP Guide

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NetApp Clustered Data ONTAP

The Shared File Systems service can be configured to use NetApp
Clustered Data ONTAP (cDOT) version 8.2 and later.

The driver can work with two types of pools: FlexGroup and FlexVol.
By default, it only works with FlexVol, if desired, the FlexGroup pool
can be enabled together or standalone.

FlexGroup pool requires ONTAP version 9.8 or later.

Supported Operations

The following operations are supported on Clustered Data ONTAP:

  • Create CIFS/NFS Share
  • Delete CIFS/NFS Share
  • Allow NFS Share access
    • IP access type is supported for NFS.
    • Read/write and read-only access are supported for NFS.
  • Allow CIFS Share access
    • User access type is supported for CIFS.
    • Read/write access is supported for CIFS.
  • Deny CIFS/NFS Share access
  • Create snapshot
  • Delete snapshot
  • Create share from snapshot
  • Extend share
  • Shrink share
  • Manage share
  • Unmanage share
  • Create consistency group
  • Delete consistency group
  • Create consistency group from CG snapshot
  • Create CG snapshot
  • Delete CG snapshot
  • Create a replica (DHSS=False)
  • Promote a replica (DHSS=False)
  • Delete a replica (DHSS=False)
  • Update a replica (DHSS=False)
  • Create a replicated snapshot (DHSS=False)
  • Delete a replicated snapshot (DHSS=False)
  • Update a replicated snapshot (DHSS=False)
  • Migrate share
  • Migrate share server


The operations are not fully supported configuring FlexGroup

  • Consistency group operations are only supported configuring the
    driver without any FlexGroup pool.
  • For FlexGroup share, create more than one replica is only allowed
    with ONTAP 9.9.1 and newer.
  • Migration of FlexGroup shares is not allowed.
  • Migration of share servers containing FlexGroup share is not


DHSS is abbreviated
from driver_handles_share_servers.

Supported Operating Modes

The cDOT driver supports both ‘driver_handles_share_servers’ (DHSS) modes.

If ‘driver_handles_share_servers’ is True, the driver will create a
storage virtual machine (SVM, previously known as vServers) for each
unique tenant network and provision each of a tenant’s shares into that
SVM. This requires the user to specify both a share network as well as a
share type with the DHSS extra spec set to True when creating

If ‘driver_handles_share_servers’ is False, the manila admin must
configure a single SVM, along with associated LIFs and protocol
services, that will be used for provisioning shares. The SVM is
specified in the manila config file.

Network approach

L3 connectivity between the storage cluster and manila host must
exist, and VLAN segmentation may be configured. All of manila’s network
plug-ins are supported with the cDOT driver.

Supported shared filesystems

  • NFS (access by IP address or subnet)
  • CIFS (authentication by user)

Required licenses

  • NFS
  • CIFS
  • FlexClone

Known restrictions

  • For CIFS shares an external Active Directory (AD) service is
    required. The AD details should be provided via a manila security
    service that is attached to the specified share network.
  • Share access rules for CIFS shares may be created only for existing
    users in Active Directory.
  • The time on external security services and storage must be
    synchronized. The maximum allowed clock skew is 5 minutes.
  • cDOT supports only flat and VLAN network segmentation types.

The manila.share.drivers.netapp.common.py Module