Chapter 5. Technology previews

This section provides an overview of Technology Preview features introduced or updated in this release of Red Hat Ceph Storage.

Important

Technology Preview features are not supported with Red Hat production service level agreements (SLAs), might not be functionally complete, and Red Hat does not recommend to use them for production. These features provide early access to upcoming product features, enabling customers to test functionality and provide feedback during the development process.

For more information on Red Hat Technology Preview features support scope, see https://access.redhat.com/support/offerings/techpreview/.

5.1. Block Devices (RBD)

Erasure Coding for Ceph Block Devices

Erasure coding for Ceph Block Devices is supported as a Technology Preview. For details, see the Erasure Coding with Overwrites (Technology Preview) section in the Storage Strategies Guide for Red Hat Ceph Storage 3.

5.2. Ceph File System

Erasure Coding for Ceph File System

Erasure coding for Ceph File System is now supported as a Technology Preview. For details, see the Creating Ceph File Systems with erasure coding section in the Ceph File System Guide for Red Hat Ceph Storage 3.

5.3. Object Gateway

Improved interoperability with S3 and Swift by using a unified tenant namespace

This enhancement allows buckets to be moved between tenants. It also allows buckets to be renamed.

In Red Hat Ceph Storage 2 the rgw_keystone_implicit_tenants option only applied to Swift. As of Red Hat Ceph Storage 3 this option applies to s3 also. Sites that used this feature with Red Hat Ceph Storage 2 now have outstanding data that depends on the old behavior. To accommodate that issue this enhancement also expands rgw_keystone_implicit_tenants so it can be set to any of "none", "all", "s3", or "swift".

For more information, see Bucket management in the Object Gateway Guide for Red Hat Enterprise Linux or Object Gateway Guide for Ubuntu depending on your distribution. The rgw_keystone_implicit_tenants setting is documented in the Using Keystone to Authenticate Ceph Object Gateway Users guide.

Ceph Object Gateway now supports Elasticsearch 5 and 6 APIs as a Technology Preview feature

Support has been added for using the Elasticsearch 5 and 6 application programming interfaces (APIs) with the Ceph Object Gateway.