使用oVirt收集磁盘使用情况的统计信息

使用oVirt收集磁盘使用情况的统计信息

我使用 REST-API 通过 oVirt REST API 收集虚拟磁盘的统计信息,并得到以下响应,

https://1.1.1.1/ovirt-engine/api/disks/b14da816-37e3-46d7-8617-2e42e52db996/statistics/

对此的回应应用程序编程接口,

{
  "statistic": [{
    "kind": "gauge",
    "type": "decimal",
    "unit": "bytes_per_second",
    "values": {
      "value": [{
        "datum": 0
      }]
    },
    "disk": {
      "href": "/ovirt-engine/api/disks/b14da816-37e3-46d7-8617-2e42e52db996",
      "id": "b14da816-37e3-46d7-8617-2e42e52db996"
    },
    "name": "data.current.read",
    "description": "Read data rate",
    "href": "/ovirt-engine/api/disks/b14da816-37e3-46d7-8617-2e42e52db996/statistics/33b9212b-f9cb-3fd0-b364-248fb61e1272",
    "id": "33b9212b-f9cb-3fd0-b364-248fb61e1272"
  }, {
    "kind": "gauge",
    "type": "decimal",
    "unit": "bytes_per_second",
    "values": {
      "value": [{
        "datum": 0
      }]
    },
    "disk": {
      "href": "/ovirt-engine/api/disks/b14da816-37e3-46d7-8617-2e42e52db996",
      "id": "b14da816-37e3-46d7-8617-2e42e52db996"
    },
    "name": "data.current.write",
    "description": "Write data rate",
    "href": "/ovirt-engine/api/disks/b14da816-37e3-46d7-8617-2e42e52db996/statistics/2f23addd-4ebd-3d82-a449-c28778bc33eb",
    "id": "2f23addd-4ebd-3d82-a449-c28778bc33eb"
  }, {
    "kind": "gauge",
    "type": "decimal",
    "unit": "seconds",
    "values": {
      "value": [{
        "datum": 0
      }]
    },
    "disk": {
      "href": "/ovirt-engine/api/disks/b14da816-37e3-46d7-8617-2e42e52db996",
      "id": "b14da816-37e3-46d7-8617-2e42e52db996"
    },
    "name": "disk.read.latency",
    "description": "Read latency",
    "href": "/ovirt-engine/api/disks/b14da816-37e3-46d7-8617-2e42e52db996/statistics/3a7b3f72-d035-3bb9-b196-e86a4eb34993",
    "id": "3a7b3f72-d035-3bb9-b196-e86a4eb34993"
  }, {
    "kind": "gauge",
    "type": "decimal",
    "unit": "seconds",
    "values": {
      "value": [{
        "datum": 0
      }]
    },
    "disk": {
      "href": "/ovirt-engine/api/disks/b14da816-37e3-46d7-8617-2e42e52db996",
      "id": "b14da816-37e3-46d7-8617-2e42e52db996"
    },
    "name": "disk.write.latency",
    "description": "Write latency",
    "href": "/ovirt-engine/api/disks/b14da816-37e3-46d7-8617-2e42e52db996/statistics/b1e75c7b-cea4-37d2-8459-f7d68efc69a3",
    "id": "b1e75c7b-cea4-37d2-8459-f7d68efc69a3"
  }, {
    "kind": "gauge",
    "type": "decimal",
    "unit": "seconds",
    "values": {
      "value": [{
        "datum": 0
      }]
    },
    "disk": {
      "href": "/ovirt-engine/api/disks/b14da816-37e3-46d7-8617-2e42e52db996",
      "id": "b14da816-37e3-46d7-8617-2e42e52db996"
    },
    "name": "disk.flush.latency",
    "description": "Flush latency",
    "href": "/ovirt-engine/api/disks/b14da816-37e3-46d7-8617-2e42e52db996/statistics/9c17ad7b-9ef1-3e8d-ad0a-ff8bee3925f0",
    "id": "9c17ad7b-9ef1-3e8d-ad0a-ff8bee3925f0"
  }]
}

所以根据我的理解,它能够检索 5 个统计数据(IE) 读取和写入带宽、读取、写入和刷新延迟。

我的问题是,是否有可能获得读/写IOPS虚拟磁盘/VM?

谢谢,
哈利

答案1

https://bugzilla.redhat.com/show_bug.cgi?id=876697似乎回答了这个问题。它指出,对于 ovirt-engine-metrics 版本 3.0.7:

来自 virt 插件指标的每个虚拟机每个磁盘的collectd 指标对于此 RFE 来说已经足够了。

collectd.virt.disk_ops.readcollectd.virt.disk_ops.write

这些指标应允许用户快速/轻松地识别使用本 RFE 中要求的高 I/O 的虚拟机。

磁盘名称保存为collectd.type_instance。 VM 名称保存为collectd.plugin_instance。

至于能够聚合每个虚拟机的存储 IOPS,在这个阶段是不可能的,因为磁盘名称不是驱动器名称 - 这是 libvirt 猜测的,因此它不能跨虚拟机聚合。用户可以登录虚拟机以检查驱动器名称。

聚合部分将在单独的BZ中解决。在 ovirt-engine-metrics-1.1.3.3-1.el7ev.noarch 中验证

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