size & size_kb: summary of all objects sizes in the bucket/container = output swift stat <bucket/container> | grep Bytes
size_actual & size_kb_actual: account for compression, encryption (showing the nearest 4k alignment) = output swift stat <bucket/container> | grep X-Container-Bytes-Used-Actual
num_objects: number of objects = output swift stat <bucket/container> | grep Objects
size_utilized & size_kb_utilized: represent the total size of compressed data in byte and kilobytes => we don´t use compression so size = size_utilized
The size does not include the information of the underlying replication of 3 or erasure coding.
ceph-rgw4:~/clyso# radosgw-admin bucket stats --bucket=size-container
{
"bucket": "size-container",
"zonegroup": "226fe09d-0ebf-4f30-a93b-d136f24a04d3",
"placement_rule": "default-placement",
"explicit_placement": {
"data_pool": "",
"data_extra_pool": "",
"index_pool": ""
},
"id": "d667b6f1-5737-4f5e-bad0-fc030f0a4e94.11750341.561",
"marker": "d667b6f1-5737-4f5e-bad0-fc030f0a4e94.11750341.561",
"index_type": "Normal",
"owner": "0fdfa377cd56439ab3e3e65c69787e92",
"ver": "0#7",
"master_ver": "0#0",
"mtime": "2018-09-03 12:37:37.744221",
"max_marker": "0#",
"usage": {
"rgw.main": {
"size": 4149,
"size_actual": 16384,
"size_utilized": 4149,
"size_kb": 5,
"size_kb_actual": 16,
"size_kb_utilized": 5,
"num_objects": 3
}
},
"bucket_quota": {
"enabled": false,
"check_on_raw": true,
"max_size": -1,
"max_size_kb": 0,
"max_objects": -1
}
}
ceph-rgw4:~/clyso # swift stat size-container
Account: v1
Container: size-container
Objects: 3
Bytes: 4149
Read ACL:
Write ACL:
Sync To:
Sync Key:
Accept-Ranges: bytes
X-Storage-Policy: default-placement
X-Container-Bytes-Used-Actual: 16384
X-Timestamp: 1535967792.05717
X-Trans-Id: tx00000000000000002378a-005b8e218c-b2faf1-eu-de-997-1
Content-Type: text/plain; charset=utf-8
X-Openstack-Request-Id: tx00000000000000002378a-005b8e218c-b2faf1-eu-de-997-1
We first uploaded a 20 byte object, then another 20 byte object and then a 4097 byte object
The output of the sizes was as follows:
1 Objekt
"size": 26,
"size_actual": 4096,
"size_utilized": 26,
"size_kb": 1,
"size_kb_actual": 4,
"size_kb_utilized": 1,
"num_objects": 1
2 Objekte
"size": 52,
"size_actual": 8192,
"size_utilized": 52,
"size_kb": 1,
"size_kb_actual": 8,
"size_kb_utilized": 1,
"num_objects": 2
3 Objekte
"size": 4149,
"size_actual": 16384,
"size_utilized": 4149,
"size_kb": 5,
"size_kb_actual": 16,
"size_kb_utilized": 5,
"num_objects": 3