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(ディスク冗長性障害)エラーおよびファブリックMCCでscsi.path.excessiveErrorsがトリガーされました

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metrocluster
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環境

  • MetroCluster FC
  • ATTO FibreBridge
  • ONTAP 9

問題

  • EMSログには次の情報が記録されます。

[node-01: slifc_timeout_1: scsi.path.excessiveErrors:error]: Excessive errors encountered by adapter 4b on disk device switch-06:10.126.
[node-01: slifc_intrd: scsi.cmd.abortedByHost:error]: Disk device switch-06:10.126L27: Command aborted by host adapter: HA status 0x4: cdb 0x28:0000a410:0008.
[node-01: slifc_intrd: scsi.cmd.retrySuccess:debug]: Disk device switch-06:11.126L27: request successful after retry #1/#0: cdb 0x28:0000a410:0008 (10990).
[node-01: svc_queue_thread: callhome.dsk.redun.fault:error]: Call home for DISK REDUNDANCY FAILED

  • ATTOブリッジのFCポート2がフラッピングしています。

[node-01: dsbridge_admin: fc.bridge.fc.port.alert:alert]: Fibre Channel FibreBridge7600N Bridge ATTO_200000XXXXXX4300 S/N: FBXXXXX335 WWN: 200000XXXXXX4300 FC Port FC_PORT2 offline.
[node-01: dsbridge_admin: fc.bridge.fc.port.notice:notice]: Fibre Channel FibreBridge7600N Bridge ATTO_200000XXXXXX4300 S/N: FBXXXXX335 WWN: 200000XXXXXX4300 FC Port FC_PORT2 connected.

  • 「クアッドパスHA」構成から「マルチパスHA」に移行します。

[node-01: dsa_disc: shelf.config.tompha:info]: System has transitioned to multi-path HA attached storage

  • ブリッジnode-01(SN:FBXXXXX335 )のFCポート2でエラーが繰り返し発生する

  ::*> storage bridge show -stats

FC Port 22XXXXXX300:
  State:              up
  Speed:              unknown
  Topology:           point-to-point
 Link Failure Count: 21444               >>>>>> Flapping and count incrementing
  Loss of Sync Count: 38390               >>>>>> Incrementing count
  CRC Error Count:    5                   >>>>>> CRC is also seen but not incrementing

  LIP Count:          0
  Frames In:          7417273
  Frames Out:         12196874703
  SFP Vendor:         AVAGO
  SFP Part Number:    AFBR-57G5MZ-ELX
  SFP Serial Number:  AM2047G1SEC
  SFP Capabilities:   8, 16,

  • FCポート2はスイッチBrocade _XXXX(シンボリック名:Switch-06)のポート10に接続されています。
  • Brocadeスイッチの  porterrshow には、スイッチのポート10でcrcおよびcrc_geofエラーが検出され、pcs errおよびuncor errが表示されます。

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

10: 69.8g 195.6g   0   34 25    0     0   9   0   2.1k 6.2k 0    7.4k  0    0  2.1k    0 2.1k  177.0k

  • ポート10の「sfpshow 」は受信電力が低いことを示します。

  =============
  Port 10:
  =============
  Identifier:  3    SFP
  Connector:   7    LC
  Transceiver: 6804406000000000 8,16,32_Gbps M5 sw Inter,Short_dist
  .
  Current:     7.496   mAmps
  Voltage:     3280.2  mVolts
 RX Power:    -8.3    dBm (149.6uW)    >>>>>>> Outside the range
  TX Power:    -1.2    dBm (758.5 uW)

  State transitions: 1
  Last poll time: 10-28-2024 CET Mon 09:22:43
  Extended smart data is Not available

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