Open Stack

Hello!

I'm working with Openstack Wallaby (1 controller, 2 compute nodes) 
connected to Ceph Pacific cluster in a devel environment.

With Openstack Victoria and Ceph Pacific (before last friday update) 
everything was running like a charm.

Then, I upgraded Openstack to Wallaby and Ceph  to version 16.2.1. 
(Because of auth_allow_insecure_global_id_reclaim I had to upgrade many 
clients... but that's another story...)

After upgrade, when I try to create a volume from image,

      openstack volume create --image 
f1df058d-be99-4401-82d9-4af9410744bc debian10_volume1 --size 5

with "show_image_direct_url = True", I get "No valid backend" in 
/var/log/cinder/cinder-scheduler.log

2021-04-26 20:35:24.957 41348 ERROR cinder.scheduler.flows.create_volume 
[req-651937e5-148f-409c-8296-33f200892e48 
c048e887df994f9cb978554008556546 f02ae99c34cf44fd8ab3b1fd1b3be964 - - -] 
Failed to run task 
cinder.scheduler.flows.create_volume.ScheduleCreateVolumeTask;volume:create: 
No valid backend was found. Exceeded max scheduling attempts 3 for 
resource 56fbb645-2c34-477d-9a59-beec78f4fd3f: 
cinder.exception.NoValidBackend: No valid backend was found. Exceeded 
max scheduling attempts 3 for resource 56fbb645-2c34-477d-9a59-beec78f4fd3f

and

2021-04-26 20:35:24.968 41347 ERROR oslo_messaging.rpc.server 
[req-651937e5-148f-409c-8296-33f200892e48 
c048e887df994f9cb978554008556546 f02ae99c34cf44fd8ab3b1fd
1b3be964 - - -] Exception during message handling: rbd.InvalidArgument: 
[errno 22] RBD invalid argument (error creating clone)

in /var/log/cinder/cinder-volume.log


If I disable "show_image_direct_url = False", volume creation from image 
works fine.


I have spent the last four days googling and reading lots of docs, old 
and new ones, unlucly...

Does anybody have a clue, (please)?

Thanks in advance!


Javier.-