There's one current nova code define it as follow: https://github.com/openstack/nova/blob/master/nova/db/sqlalchemy/api.py#L4535-L4546
that means: beside [ 'accepted', 'confirmed', 'reverted', 'error', 'failed' ], other status are all in progress. Note: here finished is in progress. John Garbutt has raised the same question in the code review. https://review.openstack.org/#/c/258771/29/nova/db/sqlalchemy/api.py There are two problems want to discuss. 1. should "finished" be in progress? from literal meaning, it should not. So we should add it to non-in-progress list. And should not return the "finished" migration when users use migration-index to fetch it. But is this reasonable? A user do a migration, he get nothing information about the migrations by migration-index after it is finished. 2. I wonder what's the difference among "done", "completed" and "finished" ? I use this command: $ git grep "migration.*status" I have gotten all migrations status beside non-in-progress as follow. done, post-migrating, preparing, queued, completed, accepted, finished, running. The current migration.status define is not good for read so I file a bug. ( https://bugs.launchpad.net/nova/+bug/1549558)
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