Ryan Liang 661a4f1212 Unity: Add consistent group support
Users could create a group type supporting consistent groups with
specification `'consistent_group_snapshot_enabled': <is> True`, then any
groups created of that group type are consistent groups, otherwise they
are generic groups.

The supported operations are:

- Create/delete consistent groups
- Add volumes to and remove volumes from consistent groups
- Create/delete consistent group snapshots
- Create consistent groups from snapshots
- Clone consistent groups

This change also does some refactor and puts extra capabilities report
together in `utils.py`, including the existing
`thin_provisioning_support`, `thick_provisioning_support` and the newly
one added for cg named `consistent_group_snapshot_enabled`.

Implements: blueprint unity-consistent-group-support

Change-Id: I0ef2ec959f892acb79d8d08a31d9a8ad47c4350f
2019-03-28 11:32:27 +08:00
..

Cinder Reference Documentation (source/reference)

Introduction:

This directory is intended to hold any reference documentation for Cinder that doesn't fit into 'install', 'contributor', 'configuration', 'cli', 'admin', or 'user' categories.

The full spec for organization of documentation may be seen in the OS Manuals Migration Spec <https://specs.openstack.org/openstack/docs-specs/specs/pike/os-manuals-migration.html>.