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FPolicy EAGAINエラーによるCIFS共有アクセスの低速化

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ontap-9
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nas
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環境

  • ONTAP 9
  • CIFS
  • FPolicy

問題

  • CIFSクライアントがCIFS共有へのアクセスで深刻な遅延を経験する
  • データインターフェイスをパートナーノードに移行すると遅延が解消される
  • EMSログにはfpolicy.eagain.on.writeエラーとcifsoperationtimedoutエラーが表示される:
[node1: fpolicy: fpolicy.eagain.on.write:NOTICE]: Write returned EAGAIN while sending notification to the FPolicy server "10.10.10.10" for vserver ID 10.

 
[node1: kernel: nblade_cifsoperationtimedout_1:ERROR]: params: commandName:SMB2_COM_READ, isQosEnabled:QoS_disabled, localIpAddress:10.10.10.100, lastSpinNpError:SPINNP_ERR_FPOLICY_REQD, clientIpAddress:10.10.10.245, cmdRestartCnt:0, suspensionCnt:2, vserverId:13, system_id:0538184752, sys_version:9.7P11, remoteBladeID:bdba0013-8032-11eb-88d1-d039ea280e22 (node1), lastCsmError:CSM_OK
  • パフォーマンスアーカイブで、ボリュームレイヤーにレイテンシがない場合でもSMB2 Read/Writeレイテンシが高く表示されることがあります

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