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FC-AL LINK_FAILURE in Fabric MetroCluster due to faulty HBA

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metrocluster
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HW
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Applies to

  • ONTAP 9
  • Fabric Attached MetroCluster

Issue

  • The following errors are reported in the event logs of a Fabric MetroCluster system:

[Node-01: slifc_intrd: fci.link.break:error]: Link break detected on Fibre Channel adapter 3c.
[Node-01: lhm_main: callhome.fc.al.link:alert]: Call home for FC-AL LINK_FAILURE (3c)  

  • There is no link on the affected FC port:

    slot 3: FC Host Adapter 3c (Emulex XE501 rev. 1, <DOWN>)
        Board name:        111-03648
        Serial Number:     FCXXXXX993
        Firmware rev:      11.4.277.0
        Host Port Id:      N/A
        FC Node Name:      2:000:00109b:4f18e1
        FC Port Name:      1:000:00109b:4f18e1
        SFP Vendor:        FINISAR CORP.
        SFP Part Number:   FTLF8532P4BCV-EM
        SFP Serial Number: PZXXXXX
        SFP Capabilities:  8, 16 or 32 Gbit
        Link Data Rate:    N/A 

  • The affected node transitions from "Quad-Path" to "Multi-Path" configuration.
  • The switch logs indicates that the switch port is disabled due to multiple link failures:

Index Port Address  Media Speed   State       Proto
==================================================
   5   5   080500   id    16G      No_Light    FC  (Ports on Demand license not assigned or reserved yet)
   6   6   080600   id    32G      Port_Flt    FC  Disabled
   
2024/10/30-07:44:23, [PORT-1003], 10881, FID 128, WARNING, fxzz-fdr-sansw24, Port 6 Faulted because of many Link Failures.
2024/10/30-07:50:25, [PORT-1003], 10882, FID 128, WARNING, fxzz-fdr-sansw24, Port 6 Faulted because of many Link Failures.   

  • Replacement of SFP/cable on switch port and node port does not resolve the issue.
  • The link comes up after swapping the cable from the affected FC port to a different free port on the node.

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