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MetroCluster IPのパフォーマンスの問題

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環境

  • MetroCluster IP
  • ONTAP 9
  • Ciscoスイッチ

問題

  • MetroCluster IPでレイテンシの増加が観察された
  • クライアントでパフォーマンスの問題が発生する
  • 輻輳は、MetroCluster IPバックエンドネットワークで報告されます。

例:

Mon Aug 21 14:19:30 +0200 [ClusterA-01: mccip_mirror_congestion_mgr_p: mcc.network.congestion:notice]: Network congestion detected. Action taken: Increased ic_timeout to 2000 msec.

  • CPSがしきい値を超えたため、Cpが長すぎます。
例:

Mon Aug 21 15:29:17 +0200 [ClusterA-01: wafl_exempt13: wafl.cp.toolong:error]: Aggregate aggr0 experienced a long CP.

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