Thanks for your reply. You are right, newly-created bucket will now have "placement_rule": "default-placement/COLD". But then I have another question that can we specify the default storage class when creating a new bucket? I found a way to set placement but not with storage class: s3.create_bucket(Bucket=bucket_name, CreateBucketConfiguration={'LocationConstraint': 'default:default-placement'}) _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx