EMC VNX Direct Driver Update

EMC VNX Direct Driver Update

Include the URL of your launchpad blueprint:


Add more functionalities into EMC VNX Direct Driver.

Problem description

The following new functionalities will be added in this update:

  • FC Support

  • FC Auto Zoning Support

  • Read-only Volume Support

  • External Volume Management Suppport

  • Advance LUN Features
    • Compression Support

    • Deduplication Support

    • FAST VP Support

    • FAST Cache Support

  • Initiator Auto Registration

  • Storage Group Auto Deletion

  • iSCSI Target Portal Selection

  • Multiple Authentication Type Support

  • Security File Support

  • Storage-Assisted Retype

  • Storage-Assisted Volume Migration

  • SP Toggle for HA

Use Cases

Proposed change

FC Support

Add a new driver class.

FC Auto Zoning Support

Add logic in intialize_connection() and terminate_connection() according to blueprint https://blueprints.launchpad.net/cinder/+spec/cinder-fc-zone-manager and the fix for bug https://bugs.launchpad.net/cinder/+bug/1308318.

Read-only Volume Support

Add logic in intialize_connection() according to blueprint https://blueprints.launchpad.net/cinder/+spec/read-only-volumes.

External Volume Management Suppport

Implement driver API according to blueprint https://blueprints.launchpad.net/cinder/+spec/add-export-import-volumes.

Advance LUN Features

Add logic to support more extra spec key-value pairs

Initiator Auto Registration

Do logic in intialize_connection() to do EMC-specific initiator registration.

Storage Group Auto Deletion

Add resource recycling logic in intialize_connection()

iSCSI Target Portal Selection

Add logic in intialize_connection() to select target portal that is pingable from the initiator.

Multiple Authentication Type Support

Add new option in configuration file so that the driver can use different authentication types that have been supported by VNX arrays.

Security File Support

Add a new option in configuration file so that encrypted credentials can be used instead of credentials in plain text.

Storage-Assisted Retype

Implement driver API according to blueprint https://blueprints.launchpad.net/cinder/+spec/volume-retype.

Storage-Assisted Volume Migration

Implement migrate_volume() so that VNX native LUN Migration is leveraged.

SP Toggle for HA

Original implementation only send management requests to one SP. Since VNX arrays have dual SPs, the driver is enhanced to send requests to the other SP is one is down.



Data model impact


REST API impact


Security impact


Notifications impact


Other end user impact


Performance Impact


Other deployer impact


Developer impact




Primary assignee:


Other contributors:


Work Items

  • Implement driver changes



Tempest test will used to qualify the driver update.

Documentation Impact

Need to update EMC VNX Direct Driver section of OpenStack Configuration Reference.



Creative Commons Attribution 3.0 License

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cinder-specs 0.0.1.dev529