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Hi Saverio,
when not using "max_count" the message "Running batches of 50 until complete"
is always printed.
If you are not getting any error and no more output the migrations should
have finished.

Unfortunately, there is not such message "All Done" when the
online_data_migrations
finish.

You can check manually if everything was correctly migrated, looking into
the DB.
These methods are triggered by the "online_data_migrations":
        db.pcidevice_online_data_migration
        db.computenode_uuids_online_data_migration
        db.aggregate_uuids_online_data_migration

cheers,

Belmiro
CERN

On Tue, Mar 7, 2017 at 8:34 AM, Saverio Proto <zioproto at gmail.com> wrote:

> Hello there,
>
> before doing the upgrade, when still in Mitaka (tag 13.1.3), I am
> running the folllwing command:
>
> nova-manage db online_data_migrations
>
> I get this output:
>
> Option "verbose" from group "DEFAULT" is deprecated for removal.  Its
> value may be silently ignored in the future.
> Option "notification_topics" from group "DEFAULT" is deprecated. Use
> option "topics" from group "oslo_messaging_notifications".
> Running batches of 50 until complete
>
> I always get the same output.
>  I also tried :
> nova-manage db online_data_migrations --max-count 5000
>
> In this case I only get the warnings about the option without 'Running
> batches of 50 until complete'.
>
> When I do not use max-count I will always get 'Running batches of 50
> until complete'.
>
> How do I understand when all the online_data_migrations are done ?
>
> I never get anything printed like 'all done'.
>
> thank you
>
> Saverio
>
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