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MetroCluster IP高書き込みレイテンシスイッチislポートエラー

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環境

  • MetroCluster IP
  • ONTAP 9
  • Ciscoバックエンドスイッチ

問題

  • クライアント側で書き込み遅延が大きくなる。

および/または

  • 再構築の進行が極めて遅い
  • スイッチISLポートに多数のエラーが表示される:

switch01# show interface counters errors

--------------------------------------------------------------------------------
Port   Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize OutDiscards
--------------------------------------------------------------------------------
Eth1/15 557    921949  0     922506  0     8452

  • イベントログにscsi.cmd.abortedとトランスポートエラーが表示されます:

[node01: scsi_cmdblk_strthr_admin: scsi.cmd.abortedByHost:error]: Disk device 0m.i2.2L3: Command aborted by host adapter: HA status 0x13: cdb 0x9a:000000015e4bc200:0002:0300.

[node01: doneq0: scsi.mcc.adt.ioTransportError:error]: mcc_adt[2] - Transport error during execution of command: HA status 0x13: CAM transport status 0x1b : cdb 0x9a:000000015e4c6600:0002:0300.

  • 書き込みコマンドは再試行で成功します:

[node01: scsi_cmdblk_strthr_admin: scsi.cmd.retrySuccess:debug]: Disk device 0v.i2.0L3: request successful after retry #1/#0: cdb 0x9a:000000015e4c3800:0002:0300 (13728).

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