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
..
2018-10-16 15:19:03 -05:00

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