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由于网络拥塞、在VMware上观察到APD错误消息

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适用场景

  • ONTAP 9.
  • NFS
  • Cisco网络交换机

问题描述

  • 在VMware ESXi上观察到NFS APD问题。
  • 在vmkernel日志中、我们会看到 如下错误消息。 

Lost connection to server 1xx.2x.xc.xx mount point
Restored connection to server 1xx.2x.xc.xx

  • 数据存储库每一小时断开一次连接。
  • 发生断开连接时、虚拟机将进入挂起状态。
  • ESXi主机上的MTU设置为1500。
  • NFS。 MaxQueueDepth 参数已调整为128、但即使重新启动主机、问题描述仍会保留。
  • 当VM正在运行且正在执行存储VMotion时、会收到APD消息。
  • 捕获 并发数据包跟踪 、并观察到特定端口或中继链路上两个端点之间路径中的网络拥塞
  • 什么是性能归档?它们是如何触发的? 系统会分析性能归档以确定是否存在延迟、但未在受影响的卷上观察到任何延迟。

 

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