跳转到主内容

在 ONTAP 9 中,用于衡量对 LUN 的间接数据访问的统计信息是什么?

Views:
4
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
san
Last Updated:

适用场景

ONTAP 9

问题解答

什么是对LUN的间接数据访问

这是指通过在  ‘拥有’存储LUN数据的聚合的节点以外的节点上配置的LIF访问LUN。这可能是 由于以下一种或多种情形导致的:

  • 主机多路径软件配置不正确、并使用非优化路径进行数据传输
  • LUN所属节点未配置SAN LIF
  • LUN选择性LUN映射配置不允许直接访问时
  • 端口集配置不当并阻止直接访问时
  • 如果网络结构发生原因出现错误、则主机将对非优化路径重试I/O

注意:在对LUN所属节点进行任何更改后,可能会记录远程操作,例如存储故障转移事件(接管/恢复)或LUN移动操作。在某些配置中、由于启动程序执行路径检查、少量操作可能是正常的。

在测量对集群模式Data ONTAP中LUN的间接数据访问时、应考虑以下两个计数器:

  • remote_ops
  • remote_bytes

::> set advanced

::*> statistics show-periodic -object lun -vserver <vserver_name> -instance <lun_path> -counter remote_ops|remote_bytes

 

Sign in to view the entire content of this KB article.

New to NetApp?

Learn more about our award-winning Support

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.