System in hang status due to lpfc FLOGI failure

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Environment

SUSE Linux Enterprise Server for SAP Applications 15 all versions
SUSE Linux Enterprise Server 15 all versions

Situation

The system was in a hang status and not accepting ssh connection. Rebooting it through the console and it hung again after a few days. This issue repeated two times.

Resolution

Contact the hardware vendor to check the status of the HBA adapter and the link. The issue was fixed after replacing the target HBA adapter.

Cause

This is a hardware issue. The logs were showing an issue related to the HBA; the link is flapping too much and it failed to access the storage/disks “FLOGI”.

kernel: [166638.670177] lpfc: 3:(0):2858 FLOGI failure Status:x3/x103 TMO:x14 Data 
kernel: [166639.387168] lpfc: 3:1303 Link Up Event x357 received Data: 
kernel: [166640.481405] lpfc: 3:1305 Link Down Event x358 received Data:

The last reported logs before rebooting were related to the HBA.

kernel: [166989.695217] lpfc 0000:66:00.1: 167: [166989.695146] 3:0357 ELS CQE error: status=x3: CQE: 
kernel: [166989.695219] lpfc 0000:66:00.1: 168: [166989.695156] 3:0328 Rsp Ring 2 error: IOCB Data: 
kernel: [166989.695221] lpfc 0000:66:00.1: 3:(0):2858 FLOGI failure Status:x3/x103 
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systemd-tmpfiles[5434]: [/usr/lib/tmpfiles.d/net-snmp.conf:1] Line references path below legacy directory /var/run/, updating /var/run/net-snmp → /run/net-snmp; please update the tmpfiles.d/ drop-in file accordingl

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