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fuel-plugin-datera-cinder
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fuel-plugin-datera-cinder/specs/datera-plugin-specs.rst

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This work is licensed under the Apache License, Version 2.0.

http://www.apache.org/licenses/LICENSE-2.0

Fuel plugin for Datera as a Cinder backend

The Datera plugin for Fuel extends Mirantis OpenStack functionality by adding support for Datera EBS in Cinder using the iSCSI protocol.

Problem description

Currently, Fuel has no support for Datera EBS as block storage for OpenStack environments. The Datera plugin aims to provide support for it.

Proposed change

Implement a Fuel plugin that will configure the Datera driver for Cinder on all Controller nodes.

Alternatives

None

Data model impact

None

REST API impact

None

Upgrade impact

None

Security impact

None

Notifications impact

None

Other end user impact

None

Performance Impact

The Datera EBS provides high performance block storage for OpenStack environments, and therefore enabling the Datera driver in OpenStack will greatly improve the peformance of OpenStack.

Other deployer impact

The deployer should make sure the IP of the management VIP is correct, prior to deploying the Fuel plugin to the controllers. If this is not done the VIP needs to altered and the cinder service will have to be restarted.

Developer impact

None

Implementation

The plugin generates the approriate cinder.conf stanzas to enable the Datera within OpenStack. There are NO other packages required, the Datera driver which is included in the OpenStack distribution is all that is necessary.

Plugin has two tasks. Each task per role. They are run in the following order:

  • The first task installs and configures cinder-volume on Primary Controller.
  • The second task installs and configures cinder-volume on Controller nodes.

Cinder-volume service is installed on all Controller nodes and is managed by Pacemaker. It runs in active/passive mode where only one instance is active. All instances of cinder-volume have the same “host” parameter in cinder.conf file. This is required to achieve ability to manage all volumes in the environment by any cinder-volume instance.

Assignee(s)

Work Items

  • Implement the Fuel plugin.
  • Implement the Puppet manifests.
  • Testing.
  • Write the documentation.

Dependencies

  • Fuel 7.0 and higher.

Testing

  • Prepare a test plan.
  • Test the plugin by deploying environments with all Fuel deployment modes.

Documentation Impact

  • Deployment Guide (how to install the storage backends, how to prepare an environment for installation, how to install the plugin, how to deploy an OpenStack environment with the plugin).
  • User Guide (which features the plugin provides, how to use them in the deployed OpenStack environment).
  • Test Plan.
  • Test Report.