nova/releasenotes/notes/automatic-live-migration-completion-post-copy-a7a3a986961c93d8.yaml

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---
features:
- New configuration option live_migration_permit_post_copy
has been added to start live migrations in a way that allows
nova to switch an on-going live migration to post-copy mode.
Requires libvirt>=1.3.3 and QEMU>=2.5.0. If post copy is
permitted and version requirements are met it also changes
behaviour of 'live_migration_force_complete', so that it
switches on-going live migration to post-copy mode instead
of pausing an instance during live migration.