-

$ sudo radosgw-admin metadata get bucket:object

{
    "key": "bucket:object",
    "ver": {
        "tag": "",
        "ver": 0
    },
    "mtime": "2013-02-07 22:05:51.333391Z",
    "data": {
        "bucket": {
            "name": "",
            "marker": "",
            "bucket_id": "",
            "tenant": "",
            "explicit_placement": {
                "data_pool": "",
                "data_extra_pool": "",
                "index_pool": ""
            }
        },
        "owner": "",
        "creation_time": "0.000000",
        "linked": "false",
        "has_bucket_info": "true",
        "old_bucket_info": {
            "bucket": {
                "name": "object",
                "marker": "88192.1",
                "bucket_id": "88192.1",
                "tenant": "",
                "explicit_placement": {
                    "data_pool": ".rgw.data.1",
                    "data_extra_pool": "",
                    "index_pool": ".rgw.data.1"
                }
            },
            "creation_time": "0.000000",
            "owner": "matwod",
            "flags": 0,
            "zonegroup": "",
            "placement_rule": "",
            "has_instance_obj": "false",
            "quota": {
                "enabled": false,
                "check_on_raw": false,
                "max_size": -1,
                "max_size_kb": 0,
                "max_objects": -1
            },
            "num_shards": 0,
            "bi_shard_hash_type": 0,
            "requester_pays": "false",
            "has_website": "false",
            "swift_versioning": "false",
            "swift_ver_location": "",
            "index_type": 0,
            "mdsearch_config": [],
            "reshard_status": 0,
            "new_bucket_instance_id": ""
        }
    }
}