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複数のscsi.cmdエラーが原因でストレッチMetroCluster FCのディスクで障害が発生する

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環境

  • ONTAP 9
  • ストレッチMetroCluster FC
  • ATTO FibreBridge

問題

  • scsi.cmd ディスクについて複数の高レイテンシエラーが報告されるONTAP:

Mon Apr 03 05:57:53 +0100 [JIFN1001: slifc_intrd: scsi.cmd.checkCondition:error]: Disk device 3a.125L13: Check Condition: CDB 0x28:015b3800:0200: Sense Data SCSI:aborted command -  (0xb - 0x4b 0x4 0x50)(2). 

Mon Apr 03 05:59:04 +0100 [JIFN1001: disk_latency_monitor: shm.threshold.highIOLatency:error]: Disk 3a.125L13 exceeds the average IO latency threshold and will be recommended for failure.

  • ディスクが メンテナンス中に なり、最終的に障害状態になります。
  • すべての scsi.cmd エラーがATTOブリッジの特定のSASポートを指している
  • 障害が発生したディスクを交換した後もエラーが継続

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