On 3/7/2017 3:12 AM, Belmiro Moreira wrote:
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 <[email protected]
<mailto:[email protected]>> 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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Also, the command exits with 1 if anything was migrated and 0 if nothing was migrated, meaning it's done.

We could use a man page for this command and it's usage, I'll open a bug in nova for that.

Thanks for the feedback and questions on usage. Without questions like this we don't know what issues people are having with the tools we provide.

--

Thanks,

Matt Riedemann

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