+ exec cinder-backup --config-file /etc/cinder/cinder.conf
/var/lib/openstack/lib/python3.12/site-packages/cinder/__init__.py:21: EventletDeprecationWarning: 
Eventlet is deprecated. It is currently being maintained in bugfix mode, and
we strongly recommend against using it for new projects.

If you are already using Eventlet, we recommend migrating to a different
framework.  For more detail see
https://eventlet.readthedocs.io/en/latest/asyncio/migration.html

  import eventlet  # noqa
simplejson unavailable, fall-back to standard python json
2026-05-25 22:36:27.388 1 INFO cinder.cmd.backup [-] Backup running in single process mode.
2026-05-25 22:36:27.695 1 INFO cinder.rpc [None req-59aa34cf-4aea-4b52-9a6a-a36bcb44384c - - - - - -] Automatically selected cinder-backup objects version 1.39 as minimum service version.
2026-05-25 22:36:27.698 1 INFO cinder.rpc [None req-59aa34cf-4aea-4b52-9a6a-a36bcb44384c - - - - - -] Automatically selected cinder-backup RPC version 2.4 as minimum service version.
2026-05-25 22:36:27.701 1 INFO cinder.rpc [None req-59aa34cf-4aea-4b52-9a6a-a36bcb44384c - - - - - -] Automatically selected cinder-volume objects version 1.39 as minimum service version.
2026-05-25 22:36:27.704 1 INFO cinder.rpc [None req-59aa34cf-4aea-4b52-9a6a-a36bcb44384c - - - - - -] Automatically selected cinder-volume RPC version 3.20 as minimum service version.
2026-05-25 22:36:27.707 1 INFO cinder.rpc [None req-59aa34cf-4aea-4b52-9a6a-a36bcb44384c - - - - - -] Automatically selected cinder-scheduler objects version 1.39 as minimum service version.
2026-05-25 22:36:27.710 1 INFO cinder.rpc [None req-59aa34cf-4aea-4b52-9a6a-a36bcb44384c - - - - - -] Automatically selected cinder-scheduler RPC version 3.12 as minimum service version.
2026-05-25 22:36:27.789 1 INFO cinder.service [-] Starting cinder-backup node (version 28.1.0)
2026-05-25 22:36:27.819 1 INFO cinder.backup.manager [None req-8e75aad3-20d6-47af-b43e-a8a5c9555951 - - - - - -] Cleaning up incomplete backup operations.
2026-05-25 22:36:27.893 1 INFO cinder.keymgr.migration [None req-d166bb3f-0b63-4232-a6fe-489c34d6b77b - - - - - -] Not migrating encryption keys because the ConfKeyManager's fixed_key is not in use.