manila/releasenotes/notes/bp-ocata-migration-improvem...

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---
prelude: >
The share migration feature was improved to support
migrating snapshots where possible and provide a more
deterministic user experience.
features:
- Added 'preserve_snapshots' parameter to share migration API.
upgrade:
- All share migration driver-assisted API parameters are
now mandatory.
- Improvements to the share migration API have been qualified
with the driver assisted migration support that exists in the
ZFSOnLinux driver. However, this driver does not currently
support preserving snapshots on migration.
- Snapshot restriction in share migration API has been
changed to return error only when parameter
force-host-assisted-migration is True.
deprecations:
- Support for the experimental share migration APIs has been
dropped for API microversions prior to 2.30.
fixes:
- Added check to validate that host assisted migration cannot
be forced while specifying driver assisted migration options.
- The share migration API can only be invoked when at least one
parameter within (host, share-network, share-type) is expected
to be changed.