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inode キャッシュの縮小が原因で NFS 接続が切断される

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Category:
ontap-9
Specialty:
nfs
Last Updated:

環境

  • ONTAP 9.7P9.
  • NFSv3

問題

  • load_inode_no_WIPS でハイサスペンド
  • Nblade.nfsLongRunningOp EMS ログにメッセージが記録される場合があります。
Sun Jul 18 21:11:49 +0200 [Cluster-02: kernel: Nblade.nfsLongRunningOp:debug]: Detected a long running network process operation. The client IP address:port is XXX.XXX.XXX.XXX:844. The local IP address:port is XXX.XXX.XXX.XXX:2049. The protocol requesting the operation is NFS3. The RPC Program Number for the operation is 100003. The RPC Procedure Number for the operation is 4. The disk process UUID is 53d962e8f59a11e9a00700a098ef419e. The Vserver identifier is 11.
  • NFS クライアントには次のような情報が表示
Jul 18 19:18:14 client03 kernel: nfs: server XXX.16.230.71 not responding, still trying
  • wafl.inode.cache.highLoad EMS ログにメッセージが表示される場合があります。
Wed Aug 25 05:55:07 +0200 [wspfas9krm-01: wafl_exempt00: wafl.inode.cache.highLoad:info]:
Wed Aug 25 05:55:07 +0200 [wspfas9krm-01: wafl_exempt00: ems.engine.suppressed:debug]: Event 'wafl.inode.cache.highLoad' suppressed 101 times in last 115163 seconds.
  • df ストレージシステムからのコマンドの完了には時間がかかることがあります
 
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