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シェルフ追加時のレイテンシが高い

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環境

  • ONTAP 9
  • DS224C

問題

  • 新しいディスクシェルフをホットアドした直後に高レイテンシ(約80ミリ秒)が発生する(DS224C)
  • EMSログの3ドライブレポートに shm.threshold.agrsvIOCount. は、同じシェルフ12の他のドライブのレイテンシは表示されません。

[?] Tue Jul 04 13:33:53 +0900 [t1-tnfsto-s02-node2: disk_server_0: shm.threshold.agrsvIOCount:notice]: Disk 5a.12.0 has exceeded 12 IOs which have latencies greater than the threshold.

[?] Tue Jul 04 13:33:58 +0900 [t1-tnfsto-s02-node2: disk_server_1: shm.threshold.agrsvIOCount:notice]: Disk 5a.12.2 has exceeded 12 IOs which have latencies greater than the threshold.

[?] Tue Jul 04 13:33:58 +0900 [t1-tnfsto-s02-node2: disk_server_0: shm.threshold.agrsvIOCount:notice]: Disk 5a.12.10 has exceeded 12 IOs which have latencies greater than the threshold.

  • シェルフ13のファームウェアバージョンがモジュールAとBで異なります。

Shelf 13: DS224-12 Firmware rev. IOM12B A: 0120 IOM12B B: 0100

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