nova/releasenotes/notes/deprecate-live-migration-pr...

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---
issues:
- |
The live-migration progress timeout controlled by the configuration option
``[libvirt]/live_migration_progress_timeout`` has been discovered to
frequently cause live-migrations to fail with a progress timeout error,
even though the live-migration is still making good progress.
To minimize problems caused by these checks we have changed the default
to 0, which means do not trigger a timeout.
To modify when a live-migration will fail with a timeout error, please now
look at ``[libvirt]/live_migration_completion_timeout`` and
``[libvirt]/live_migration_downtime``.
deprecations:
- |
``[libvirt]/live_migration_progress_timeout`` has been deprecated as this
feature has been found not to work. See bug 1644248 for more details.