NexentaEdge NBD & iSCSI drivers

NexentaEdge NBD & iSCSI drivers

NexentaEdge is designed from the ground-up to deliver high performance Block and Object storage services and limitless scalability to next generation OpenStack clouds, petabyte scale active archives and Big Data applications. NexentaEdge runs on shared nothing clusters of industry standard Linux servers, and builds on Nexenta IP and patent pending Cloud Copy On Write (CCOW) technology to break new ground in terms of reliability, functionality and cost efficiency.

For NexentaEdge user documentation, visit

iSCSI driver

The NexentaEdge cluster must be installed and configured according to the relevant Nexenta documentation. A cluster, tenant, bucket must be pre-created, as well as an iSCSI service on the NexentaEdge gateway node.

The NexentaEdge iSCSI driver is selected using the normal procedures for one or multiple back-end volume drivers.

You must configure these items for each NexentaEdge cluster that the iSCSI volume driver controls:

  1. Make the following changes on the volume node /etc/cinder/cinder.conf file.

    # Enable Nexenta iSCSI driver
    volume_driver = cinder.volume.drivers.nexenta.nexentaedge.iscsi.NexentaEdgeISCSIDriver
    # Specify the ip address for Rest API (string value)
    nexenta_rest_address = MANAGEMENT-NODE-IP
    # Port for Rest API (integer value)
    # Protocol used for Rest calls (string value, default=htpp)
    nexenta_rest_protocol = http
    # Username for NexentaEdge Rest (string value)
    # Password for NexentaEdge Rest (string value)
    # Path to bucket containing iSCSI LUNs (string value)
    nexenta_lun_container = CLUSTER/TENANT/BUCKET
    # Name of pre-created iSCSI service (string value)
    nexenta_iscsi_service = SERVICE-NAME
    # IP address of the gateway node attached to iSCSI service above or
    # virtual IP address if an iSCSI Storage Service Group is configured in
    # HA mode (string value)
    nexenta_client_address = GATEWAY-NODE-IP
  2. Save the changes to the /etc/cinder/cinder.conf file and restart the cinder-volume service.

Supported operations

  • Create, delete, attach, and detach volumes.
  • Create, list, and delete volume snapshots.
  • Create a volume from a snapshot.
  • Copy an image to a volume.
  • Copy a volume to an image.
  • Clone a volume.
  • Extend a volume.

Driver options

Nexenta Driver supports these options:

Description of NexentaEdge driver configuration options
Configuration option = Default value Description
nexenta_blocksize = 4096 (Integer) Block size for datasets
nexenta_chunksize = 32768 (Integer) NexentaEdge iSCSI LUN object chunk size
nexenta_client_address = (String) NexentaEdge iSCSI Gateway client address for non-VIP service
nexenta_iscsi_service = (String) NexentaEdge iSCSI service name
nexenta_iscsi_target_portal_port = 3260 (Integer) Nexenta target portal port
nexenta_lun_container = (String) NexentaEdge logical path of bucket for LUNs
nexenta_rest_address = (String) IP address of NexentaEdge management REST API endpoint
nexenta_rest_password = nexenta (String) Password to connect to NexentaEdge
nexenta_rest_port = 8080 (Integer) HTTP port to connect to Nexenta REST API server
nexenta_rest_protocol = auto (String) Use http or https for REST connection (default auto)
nexenta_rest_user = admin (String) User name to connect to NexentaEdge
nexenta_replication_count = 3 (String) NexentaEdge iSCSI LUN object replication count.
nexenta_encryption = False (String) NexentaEdge iSCSI LUN object encryption
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