2 Commits

Author SHA1 Message Date
Goutham Pacha Ravi
0970eb6e3a Add cast_rules_to_readonly to share instances
- Add Database migration to introduce the column on the
  share instances model.
- Set the field to True if creating read-only secondary
  replicas, unset while promoting them.
- Set the field to True if drivers don't support writable access
  to migrating shares, or if using host assisted migration.
  Unset if migration fails, or is canceled.
- Expose the field via share-instances and share-replicas
  APIs to administrators.

Supporting read only-access rules is part of the minimum
driver requirements in manila.

APIImpact
DocImpact

Implements: bp fix-and-improve-access-rules

Co-Authored-By: Rodrigo Barbieri <rodrigo.barbieri@fit-tecnologia.org.br>

Change-Id: Ie8425f36f02cbcede0aaa9f3fe1f5f3cf23df8b8
2017-01-20 22:49:56 +00:00
Rodrigo Barbieri
53539c0e1d Share Migration Ocata Improvements
Implemented several improvements to share migration
according to spec [1].

Summary of changes:
- Snapshot restriction in API has been changed to return error only
when parameter force-host-assisted-migration is True
- Added preserve_snapshot to API and migration_check_compatibility
driver interface
- Changed all driver-assisted API parameters to be mandatory
- Added validation to prevent 'force_host_assisted_migration' to be
used alongside driver-assisted parameters
- Changed "same host" validation to reject only if the combination
of "host", "new_share_network" and "new_share_type" is the same as
the source
- Updated migration driver interfaces to support snapshots
- Updated zfsonlinux driver, defaulting preserve_snapshots to False
- Updated dummy driver to support preserve_snapshots

Spec update with latest changes since [1] merged
can be found in [2].

APIImpact
DocImpact

[1] I5717e902373d79ed0d55372afdedfaa98134c24e
[2] If02180ec3b5ae05c9ff18c9f5a054c33f13edcdf

Change-Id: I764b389816319ed0ac5178cadbf809cb632035b4
Partially-implements: blueprint ocata-migration-improvements
2017-01-20 09:45:14 -02:00