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ネットワーク障害時にSnapMirrorアクティブ同期のプライマリLUNがデグレード状態とマークされる

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環境

  • ONTAP 9
  • SnapMirrorアクティブ同期(旧称SnapMirrorビジネス継続性(SM-BC))

問題

  • プライマリサイトへのI/Oの中断は、次のすべてのイベントが発生したときに発生し ます。
    • プライマリサイトとセカンダリサイト間のネットワーク障害
    • SnapMirrorアクティブな同期 整合性グループが「非同期」になっています
    • [1]プライマリサイトからONTAPメディエーターにアクセスできない
  • EMSログに次のメッセージが表示される
    • [<NODE>: scsit_lu_0: scsiblade.san.ssm.lu.degraded:alert]: LUN <LUN_Serial> was marked as degraded due to a SnapMirror Automated Failover relationship going out of sync.
    • [<NODE>: mgwd: sm.mediator.misconfigured:alert]: ONTAP Mediator is not accessible on cluster "<CLUSTER_NAME>" with Mediator IP address "<ONTAP_MEDIATOR_IP>".

 

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