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CPU利用率が高いため、TO / GBのONTAPアップグレード中にボリュームへのアクセスが失われました

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ontap-9
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環境

  • ONTAP 9
  • iSCSI
  • VMware ESXi

問題

  • ONTAPのアップグレード中のノードのテイクオーバーとギブバックのタイムスタンプで、ESXiが   ボリュームにアクセスできなくなりました。
Lost access to volume 6682a71f-6c1a0fd6-d358-000e1e96e800 (vol1) due to connectivity issues. Recovery attempt is in progress and outcome will be reported shortly.
  • アップグレード時、ノードのCPU利用率が99%になる
  • アップグレード後もCPU利用率が常に60%を超えている

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