128 lines
4.2 KiB
ReStructuredText
128 lines
4.2 KiB
ReStructuredText
====================
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Hedvig Volume Driver
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====================
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Hedvig provides software-defined storage for enterprises building private,
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hybrid, or multi-cloud environments. Hedvig's patented Universal Data Plane
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technology forms a distributed, scale-out cluster that transforms commodity
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servers or cloud computing into a unified data fabric.
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The Hedvig Cinder Driver interacts with a configured backend Hedvig Cluster
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using REST APIs.
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Using the Hedvig Volume Driver
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------------------------------
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With the Hedvig Volume Driver for OpenStack, you can :
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- Integrate public and private clouds:
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Build a unified hybrid environment to easily migrate to or from your
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data center and public clouds.
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- Set granular virtual disk policies:
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Assign enterprise-class features on a per volume basis to best fit your
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application requirements.
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- Connect to any compute environment:
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Use with any hypervisor, application, or bare-metal system.
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- Grow seamlessly with an elastic cluster:
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Scale storage performance and capacity on-the-fly with off-the-shelf x86
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servers.
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- Deliver predictable performance:
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Receive consistent high-IOPS performance for demanding applications
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through massive parallelism, dedicated flash, and edge cache
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configurations.
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Requirement
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-----------
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Hedvig Volume Driver, version 1.0.0 and later, supports Hedvig release 3.0 and
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later.
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Supported operations
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--------------------
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Hedvig supports the core features of OpenStack Cinder:
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- Create and delete volumes
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- Attach and detach volumes
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- Create and delete snapshots
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- Create volume from snapshot
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- Get volume stats
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- Copy image to volume
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- Copy volume to image
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- Clone volume
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- Extend volume
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- Enable deduplication, encryption, cache, compression, custom replication
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policy on a volume level using volume-type extra-specs
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Hedvig Volume Driver configuration
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-----------------------------------
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The Hedvig Volume Driver can be configured by editing the cinder.conf file
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located in the /etc/cinder/ directory.
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.. code-block:: ini
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[DEFAULT]
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enabled_backends=hedvig
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[HEDVIG_BACKEND_NAME]
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volume_driver=cinder.volume.drivers.hedvig.hedvig_cinder.HedvigISCSIDriver
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san_ip=<Comma-separated list of HEDVIG_IP/HOSTNAME of the cluster nodes>
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san_login=HEDVIG_USER
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san_password=HEDVIG_PASSWORD
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san_clustername=HEDVIG_CLUSTER
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Run the following commands on the OpenStack Cinder Node to create a Volume
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Type for Hedvig:
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.. code-block:: console
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cinder type-create HEDVIG_VOLUME_TYPE
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cinder type-key HEDVIG_VOLUME_TYPE set volume_backend_name=HEDVIG_BACKEND_NAME
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This section contains definitions of the terms used above.
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HEDVIG_IP/HOSTNAME
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The IP address or hostnames of the Hedvig Storage Cluster Nodes
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HEDVIG_USER
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Username to login to the Hedvig Cluster with minimum ``super user``
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(admin) privilege
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HEDVIG_PASSWORD
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Password to login to the Hedvig Cluster
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HEDVIG_CLUSTER
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Name of the Hedvig Cluster
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.. note::
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Restart the ``cinder-volume`` service after updating the ``cinder.conf``
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file to apply the changes and to initialize the Hedvig Volume Driver.
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Hedvig QoS Spec parameters and values
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-------------------------------------
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- dedup_enable – true/false
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- compressed_enable – true/false
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- cache_enable – true/false
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- replication_factor – 1-6
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- replication_policy – Agnostic/RackAware/DataCenterAware
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- replication_policy_info – comma-separated list of data center names
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(applies only to a replication_policy of DataCenterAware)
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- disk_residence – Flash/HDD
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- encryption – true/false
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Creating a Hedvig Cinder Volume with custom attributes (QoS Specs)
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------------------------------------------------------------------
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1. Create a QoS Spec with the list of attributes that you want to
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associate with a volume. For example, to create a Cinder Volume with
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deduplication enabled, create a QoS Spec called dedup_enable with
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dedup_enable=true
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#. Create a new volume type and associate this QoS Spec with it,
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OR associate the QoS Spec with an existing volume type.
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#. Every Cinder Volume that you create of the above volume type
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will have deduplication enabled.
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#. If you do create a new volume type, make sure to add the key
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volume_backend_name so OpenStack knows that the Hedvig Volume
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Driver handles all requests for this volume.
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