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本篇内容介绍了“compression功能测试方法是什么”的有关知识，在实际案例的操作过程中，不少人都会遇到这样的困境，接下来就让小编带领大家学习一下如何处理这些情况吧！希望大家仔细阅读，能够学有所成！
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功能描述:
1.目前从k版本开始支持compression，目前支持zlib、snappy、zstd，注意从ceph version 12.0.0开始才加入了zstd插件。
2.注意配置的时候如果设置的插件不存在或者名称错误，则不启用压缩特性。
3.目前压缩特性只对data_pool这个pool的数据有效。
4. 可以实时变更插件类型而不影响之前写入的数据访问。（写入object的时候每个object都有一个内置变量标记当前object使用的压缩插件类型。）
5.compression特性对用户透明，用户是无法感知压缩功能是否存在的。
root@demo:/home/user# radosgw-admin zone placement modify --rgw-zone=default --placement-id=default-placement --compression=zstd
{
"id": "eab5746a-26fa-42b4-a5f3-5d887ba846f9",
"name": "default",
"domain_root": "default.rgw.data.root",
"control_pool": "default.rgw.control",
"gc_pool": "default.rgw.gc",
"lc_pool": "default.rgw.lc",
"log_pool": "default.rgw.log",
"intent_log_pool": "default.rgw.intent-log",
"usage_log_pool": "default.rgw.usage",
"user_keys_pool": "default.rgw.users.keys",
"user_email_pool": "default.rgw.users.email",
"user_swift_pool": "default.rgw.users.swift",
"user_uid_pool": "default.rgw.users.uid",
"system_key": {
"access_key": "",
"secret_key": ""
},
"placement_pools": [
{
"key": "default-placement",
"val": {
"index_pool": "default.rgw.buckets.index",
"data_pool": "default.rgw.buckets.data",
"data_extra_pool": "default.rgw.buckets.non-ec",
"index_type": 0,
"compression": "zstd" #插件类型
}
},
{
"key": "new",
"val": {
"index_pool": "new.buckets.index",
"data_pool": "new.buckets.data",
"data_extra_pool": "new.buckets.extra",
"index_type": 0,
"compression": "zlib" #插件类型
}
}
],
"metadata_heap": "",
"tier_config": [],
"realm_id": ""
}root@demo:/home/user# radosgw-admin zone placement list --rgw-zone=default
[
{
"key": "default-placement",
"val": {
"index_pool": "default.rgw.buckets.index",
"data_pool": "default.rgw.buckets.data",
"data_extra_pool": "default.rgw.buckets.non-ec",
"index_type": 0,
"compression": "zstd" #插件类型
}
},
{
"key": "new",
"val": {
"index_pool": "new.buckets.index",
"data_pool": "new.buckets.data",
"data_extra_pool": "new.buckets.extra",
"index_type": 0,
"compression": "zlib" #插件类型
}
}
]测试使用一个iso镜像文件，对比压缩前后的体检差异
root@demo:/home/user# radosgw-admin bucket stats --bucket=snappy-test
{
"bucket": "snappy-test",
"pool": "default.rgw.buckets.data",
"index_pool": "default.rgw.buckets.index",
"id": "0fef9464-bfe0-428b-86b5-b8d51876ff81.4274.1",
"marker": "0fef9464-bfe0-428b-86b5-b8d51876ff81.4274.1",
"owner": "u-gfn2636",
"ver": "0#41",
"master_ver": "0#0",
"mtime": "2017-03-21 09:44:13.698936",
"max_marker": "0#",
"usage": {
"rgw.main": {
"size": 258998272,
"size_actual": 248091783 ，#实际文件大小
"size_utilized": 248091783, #压缩后的大小
"size_kb": 252928,
"size_kb_actual": 252928,
"size_kb_utilized": 242278,
"num_objects": 1
},
"rgw.multimeta": {
"size": 0,
"size_actual": 0,
"size_utilized": 0,
"size_kb": 0,
"size_kb_actual": 0,
"size_kb_utilized": 0,
"num_objects": 0
}
},
"bucket_quota": {
"enabled": false,
"check_on_raw": false,
"max_size": -1,
"max_size_kb": 0,
"max_objects": -1
}
}| 插件名称 | 未压缩 | snappy | zstd | zlib |
|---|---|---|---|---|
| 容量大小 | 258998272 | 248091783 | 245851907 | 246105300 |
“compression功能测试方法是什么”的内容就介绍到这里了，感谢大家的阅读。如果想了解更多行业相关的知识可以关注创新互联网站，小编将为大家输出更多高质量的实用文章！