This is incorrect.. it should be: share_backend_name='s!= cephfs' Same issue exists in the 16.1 doc.. Reported by: rhn-engineering-gpachara https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/16.2/html/deploying_the_shared_file_systems_service_with_native_cephfs/assembly-native-cephfs-post-deployment-config_native-cephfs#annotations:d344daa1-d20c-43a3-ba22-f0b60c7ec064