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スイッチ側のSFPの障害が原因で、BrocadeスイッチのC3が破棄され、フレーム損失が発生します

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Category:
fas-systems
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brocade
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環境

  • BrocadeファブリックOS
  • ONTAP
  • Hyper-V Windowsホスト

問題

  • ONTAPターゲットポートがBrocadeスイッチポートに接続されて いて、 C3(ディスクC3)が破棄され、C3タイムアウトTXが表示されるエラーが発生しました。
  • 対応するデバイスまたはONTAP SFPを正常なものと交換済み
  • ケーブルはスワップ済み、または正常なケーブルと交換済み
  • スロードレインデバイスの報告
  • ホストでディスクIOエラーが発生し 、IOの一時停止/停止が発生する

例:

The system failed to flush data to the transaction log. Corruption may occur in VolumeId: xxxxxxxx, DeviceName: \Device\HarddiskVolume123.
({Data Overrun}
A data overrun error occurred - Ntfs

        ​​The IO operation at logical block address 0x1debb18 for Disk 0 (PDO name: \Device\0000002f) was retried

  • ディスクC3 および C3タイムアウト tx破棄 porterrshow

     frames    enc   crc   crc   too   too   bad   enc  disc   link   loss   loss   frjt   fbsy  c3timeout   pcs   uncor
    tx    rx    in   err   g_eof  shrt   long   eof    out  c3  fail   sync   sig          tx  rx    err   err
 352: 40.0m 183.4m   0    0    0    0    0    0    29.5k   6.3k    10    5    1    0    0   605   0    0    0

  • portstatsshow

portstatsshow 103
er_tx_c3_timeout     360                 Class 3 transmit frames discarded due to timeout

  •   最適な範囲のRXとTX sfpshow

Port 23:
=============
[...]
RX Power:   -1.8   dBm (655.2uW) 
TX Power:   -2.1   dBm (618.8 uW) 

 

  • のC3 Txタイムアウトイベントとともに観察されたIOフレーム損失イベント errdump

CRITICAL, CDVL_X, slot11 port32, F-Port 11/32, Condition=ALL_OTHER_F_PORTS(C3TXTO/min>3), Current Value:[C3TXTO, 20 Timeouts], RuleName=defALL_OTHER_F_PORTSC3TXTO_3, Dashboard Category=Port Health.
CRITICAL, CDVL_X, slot11 port32, F-Port 11/32, Condition=ALL_PORTS(DEV_LATENCY_IMPACT==IO_FRAME_LOSS), Current Value:[DEV_LATENCY_IMPACT, IO_FRAME_LOSS, (20 C3TX Timeouts) ], RuleName=defALL_PORTS_IO_FRAME_LOSS_UNQUAR, Dashboard Category=Fabric Performance Impact.
WARNING, , Flow (SID=0x6cc0c0,DID=0x6c9bc1,Host Port=9/40), Condition=sys_flow_monitor(RD_STATUS_TIME/10SEC>12000), Current Value:[RD_STATUS_TIME, 223776 Microseconds], RuleName=defRD_STATUS_TIME_12000, Dashboard Category=IO Latency.
INFO, FAB1, Frame timeout detected, tx port 1/23 rx port 1/23, sid 123, did 456, timestamp xy
INFO, FAB1,  Local domain 1, port index 123: A zoned device 0x123456 has been quarantined.
WARNING, FAB1, Port 1/23 (Port index 123) has been marked as Slow Drain Device.


 

 

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