Aug 25 11:12:49.865728 np0000008072 systemd[1]: Started devstack@c-bak.service - Devstack devstack@c-bak.service.
Aug 25 11:12:50.000856 np0000008072 cinder-backup[98349]: /opt/stack/cinder/cinder/__init__.py:21: EventletDeprecationWarning:
Aug 25 11:12:50.000856 np0000008072 cinder-backup[98349]: Eventlet is deprecated. It is currently being maintained in bugfix mode, and
Aug 25 11:12:50.000856 np0000008072 cinder-backup[98349]: we strongly recommend against using it for new projects.
Aug 25 11:12:50.000856 np0000008072 cinder-backup[98349]: If you are already using Eventlet, we recommend migrating to a different
Aug 25 11:12:50.000856 np0000008072 cinder-backup[98349]: framework.  For more detail see
Aug 25 11:12:50.000856 np0000008072 cinder-backup[98349]: https://eventlet.readthedocs.io/en/latest/asyncio/migration.html
Aug 25 11:12:50.000856 np0000008072 cinder-backup[98349]:   import eventlet  # noqa
Aug 25 11:12:51.185731 np0000008072 cinder-backup[98349]: Traceback (most recent call last):
Aug 25 11:12:51.185731 np0000008072 cinder-backup[98349]:   File "/opt/stack/data/venv/bin/cinder-backup", line 3, in <module>
Aug 25 11:12:51.186228 np0000008072 cinder-backup[98349]:     from cinder.cmd.backup import main
Aug 25 11:12:51.186228 np0000008072 cinder-backup[98349]:   File "/opt/stack/cinder/cinder/cmd/backup.py", line 46, in <module>
Aug 25 11:12:51.186228 np0000008072 cinder-backup[98349]:     from cinder import service
Aug 25 11:12:51.186228 np0000008072 cinder-backup[98349]:   File "/opt/stack/cinder/cinder/service.py", line 50, in <module>
Aug 25 11:12:51.186228 np0000008072 cinder-backup[98349]:     from cinder.volume import volume_utils
Aug 25 11:12:51.186228 np0000008072 cinder-backup[98349]:   File "/opt/stack/cinder/cinder/volume/volume_utils.py", line 65, in <module>
Aug 25 11:12:51.186228 np0000008072 cinder-backup[98349]:     from cinder.volume import driver
Aug 25 11:12:51.186228 np0000008072 cinder-backup[98349]:   File "/opt/stack/cinder/cinder/volume/driver.py", line 419, in <module>
Aug 25 11:12:51.186228 np0000008072 cinder-backup[98349]:     CONF.import_opt('backup_use_same_host', 'cinder.backup.api')
Aug 25 11:12:51.186228 np0000008072 cinder-backup[98349]:   File "/opt/stack/data/venv/lib/python3.12/site-packages/oslo_config/cfg.py", line 3356, in import_opt
Aug 25 11:12:51.186670 np0000008072 cinder-backup[98349]:     __import__(module_str)
Aug 25 11:12:51.186670 np0000008072 cinder-backup[98349]:   File "/opt/stack/cinder/cinder/backup/api.py", line 60, in <module>
Aug 25 11:12:51.186750 np0000008072 cinder-backup[98349]:     class API(base.Base):
Aug 25 11:12:51.186750 np0000008072 cinder-backup[98349]:   File "/opt/stack/cinder/cinder/backup/api.py", line 379, in API
Aug 25 11:12:51.186863 np0000008072 cinder-backup[98349]:     backup: objects.Backup):
Aug 25 11:12:51.186863 np0000008072 cinder-backup[98349]:             ^^^^^^^^^^^^^^
Aug 25 11:12:51.186863 np0000008072 cinder-backup[98349]: AttributeError: module 'cinder.objects' has no attribute 'Backup'
Aug 25 11:12:51.482167 np0000008072 systemd[1]: devstack@c-bak.service: Main process exited, code=exited, status=1/FAILURE
Aug 25 11:12:51.483290 np0000008072 systemd[1]: devstack@c-bak.service: Failed with result 'exit-code'.