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NFSがNblade.nfsRCChecksumMismatchエラーで応答しません

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Category:
ontap-9
Specialty:
nas
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環境

  • ONTAP 9
  • NFSv3
  • OpenStack環境

問題

  • 仮想マシンでレイテンシやI/Oストールが発生する
  • LinuxホストがNFSクライアントエラーを報告する

kernel: nfs: server xxx.xxx.xxx.xxx not responding, still trying

  • ストレージログには EMS イベントが表示されます

Nblade.nfsRCChecksumMismatch:alert]: Replay cache checksum mismatch detected in retransmitted NFS request from client. Vserver ID is 5; service protocol:version is NFS:3, Rpc Xid 0x12xxxxxx; client IP address:port is xxx.xxx.xxx.xxx:947. local IP address is yyy.yyy.yyy.yyy; NFS procedure number is 7. 

  • 問題は特定の時間帯に断続的に発生する

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