Thanks.
I tried but it says there is nothing to migrate:

+-----------------------------------------+--------------+-----------+
|                Migration                | Total Needed | Completed |
+-----------------------------------------+--------------+-----------+
| untyped_snapshots_online_data_migration |      0       |     0     |
|  untyped_volumes_online_data_migration  |      0       |     0     |
+-----------------------------------------+--------------+-----------+

On Tue, Aug 4, 2020 at 9:20 AM Fabian Zimmermann <dev.faz@gmail.com> wrote:
Hi,

No i mean the "online data migrations"

https://docs.openstack.org/cinder/rocky/upgrade.html

 Fabian

Massimo Sgaravatto <massimo.sgaravatto@gmail.com> schrieb am Di., 4. Aug. 2020, 09:14:
Do you mean "su -s /bin/sh -c "cinder-manage db sync" cinder" ?
Yes: this was run

Cheers, Massimo

On Tue, Aug 4, 2020 at 7:54 AM Fabian Zimmermann <dev.faz@gmail.com> wrote:
Hi,

i never had this issue, but did you run the post upgrade data migrations?

 Fabian

Massimo Sgaravatto <massimo.sgaravatto@gmail.com> schrieb am Mo., 3. Aug. 2020, 20:21:
We have just updated a small OpenStack cluster to Train.
Everything seems working, but "cinder-status upgrade check" complains that services and volumes must have a service UUID [*].
What does this exactly mean?

Thanks, Massimo

[*]
+--------------------------------------------------------------------+
| Check: Service UUIDs                                               |
| Result: Failure                                                    |
| Details: Services and volumes must have a service UUID. Please fix |
|   this issue by running Queens online data migrations.             |