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因SFP/缆线故障而导致集群互连延迟较长

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ontap-9
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适用场景

ONTAP 9

问题描述

  • 用户报告NetApp卷延迟较长。
  • QoS统计信息报告 集群互连延迟。

cluster1::> qos statistics volume latency show -iterations 100
Workload        ID      Latency     Network    Cluster    Data      Disk     QoS       NVRAM  
--------------- ------ --------    --------   --------   --------  -------- -------- ----------
-total-                2320.45ms   109.00us  2320.02ms  327.00us  32.00us    0ms        0ms      
vdisk_vol1      111    2214.05ms   135.00us  2213.22ms  603.00us  89.00us    0ms        0ms     
vol2            1234   2701.12ms   238.00us  2700.56ms  191.00us  133.00us   0ms        0ms  

  • 根据SFP故障的类型、这可能并不总是触发EMS事件
  • EMS日志可能会报告以下错误:

Mon Nov 21 08:31:41 +0900 [ST-BNC-5708N2: vifmgr: callhome.clus.net.degraded:alert]: Call home for CLUSTER NETWORK DEGRADED: Large MTU Packet Loss - Ping failures detected between cluster-02_clus2 ( xxx.xxx.xx.xx ) on Node2 and cluster-01_clus2 ( xxx.xxx.xxx.xxx ) on Node1

 

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