Ceph » rgw

For any metadata changes on versioned objects (current/non-current), its bucket index entry (mtime) is not updated. For eg.,

date --utc; aws  --no-verify-ssl --endpoint-url http://localhost:8000 s3api put-object-acl --bucket bucket1 --key lc_obj1  --acl private --version-id=AWsTipKl2P.Scy4DktmwISbHz3pr-9e
        Wed Jun 21 09:31:49 AM UTC 2023

aws  --no-verify-ssl --endpoint-url http://localhost:8000 s3api head-object --bucket bucket1 --key lc_obj1 --version-id=AWsTipKl2P.Scy4DktmwISbHz3pr-9e
{
            "AcceptRanges": "bytes",
            "LastModified": "Wed, 21 Jun 2023 09:31:49 GMT",              >>>>>>>>>>>> 'updated mtime'
            "ContentLength": 12,
            "ETag": "\"ed076287532e86365e841e92bfc50d8c\"",
            "VersionId": "AWsTipKl2P.Scy4DktmwISbHz3pr-9e",
            "ContentType": "text/plain",
            "Metadata": {
            "s3cmd-attrs": "atime:1687330800/ctime:1599663278/gid:0/gname:root/md5:ed076287532e86365e841e92bfc50d8c/mode:33188/mtime:1599663278/uid:0/uname:root" 
            },
            "StorageClass": "STANDARD" 
        }

aws s3api --no-verify-ssl --endpoint http://localhost:8000 list-object-versions --bucket bucket1 --key lc_obj1 | grep "AWsTipKl2P.Scy4DktmwISbHz3pr-9e" -C 8
                "ID": "cosbench" 
                }
            },
    {
                "ETag": "\"ed076287532e86365e841e92bfc50d8c\"",
                "Size": 12,
                "StorageClass": "STANDARD",
                "Key": "lc_obj1",
                "VersionId": "AWsTipKl2P.Scy4DktmwISbHz3pr-9e",
                "IsLatest": false,
                "LastModified": "2023-06-21T09:23:24.052Z",                >>>>>>>>>>>> 'old mtime'
                "Owner": {
                "DisplayName": "cosbench_user",
                "ID": "cosbench" 
                }
            },
    {