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Fabric MetroCluster高写入延迟

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适用场景

  • 光纤 MetroCluster
  • ONTAP 9
  • Brocade FC 交换机
  • ATto 7500N/7600N光纤桥

问题描述

  • 所有SVM和卷的写入延迟都很高。
  • porterrshow 在 后端交换机的supportshow 输出中、未显示任何错误。
  • EMS日志显示重复的SCSI命令已中止错误、所有错误均表示同一网桥:

Mon May 22 11:25:54 +0200 [cluster01_node01: slifc_intrd:scsi.cmd.abortedByHost:error]: Disk device switch001:7.126L39: Command aborted by host adapter: HA status 0x4: cdb 0x88:000000014c718748:00000008.

Mon May 22 11:26:47 +0200 [cluster01_node01: slifc_intrd:scsi.cmd.abortedByHost:error]: Disk device switch001:7.126L31: Command aborted by host adapter: HA status 0x4: cdb 0x9a:000000014c79ae00:0001:0200.

Mon May 22 11:27:57 +0200 [cluster01_node01: slifc_intrd:scsi.cmd.abortedByHost:error]: Disk device switch001:7.126L36: Command aborted by host adapter: HA status 0x4: cdb 0x28:d9746598:0018.

  • 禁用连接到受影响网桥的交换机端口后、延迟恢复到正常水平。

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