Link break detected on Fibre Channel adapter

Applies to

• MetroCluster
• ONTAP 9
• SAN
• FCP

Issue

1. Fibre Channel Host Adapter offline or flapping.
2. Determine if the SFPs in  Normal range
3. Steps to isolate the source include the following on switch:
   • Review switch logs to confirm the issue is isolated to a single connection
   • Collect 'supportshow' switch logs.
     • Check 'porterrshow' to confirm switch sees the errors on the associated port
     • Check 'sfpshow -all' for the port hardware details
     • Review power RX and TX readings for abnormalities
4. Replace or Reseat the SFPs switch and storage ends.
5. In case, no obvious faults are found on switch/ Netapp, check for any patch panels involved with a potential hardware issue

EMS logs:

[NODE_NAME : fct_tpd_work_thread_1: scsitarget.slifct.linkBreak:error]: Link break detected on Fibre Channel target HBA 3a with event status 1 , topology type 1, status1 0x0, status2 0x0.
[NODE_NAME : fct_tpd_work_thread_1: fcp.io.status:debug]: STIO Adapter:3a IO WQE failure, Handle 0x4, Type 7, S_ID: 4D800, VPI: 3, OX_ID: 2021, Status 0x3 Ext_Status 0x1a
[NODE_NAME : fct_tpd_work_thread_0: scsitarget.hwpfct.linkUp:notice]: Link up on Fibre Channel target adapter 3a.

 [NODE_NAME: slifc_intrd: fci.link.break:error]: Link break detected on Fibre Channel adapter 2c.
[NODE_NAME: slifc_timeout_3: fci.link.error:error]: Could not recover link on Fibre Channel adapter 2c after 30 seconds. Taking the adapter offline.
[NODE_NAME: nchmd: hm.alert.raised:alert]: Alert Id = StorageFCAdapterFault_Alert , Alerting Resource = 100000109b4e2af2 raised by monitor node-connect
[NODE_NAME: slifc_asyncd_3: fci.adapter.online:info]: Fibre Channel adapter 2c is now online.
or
[NODE_NAME: slifc_asyncd_3: fci.adapter.online:info]: Fibre Channel adapter 2c is now online.

CLI:

::> event log show -message-name *linkBreak*Time Node Severity Event 
------------------- ---------------- ------------- --------------------------- 
5/22/2024 14:32:34 Node1 ERROR scsitarget.ispfct.linkBreak: Link break detected on Fibre Channel target adapter 0e. Firmware status code status1 0x2, status2 0x7, and status4 0x0. 
5/22/2024 14:32:34 Node1 ERROR scsitarget.ispfct.linkBreak: Link break detected on Fibre Channel target adapter 0e. Firmware status code status1 0x2, status2 0x7, and status4 0x0. 
 2 entries were displayed.