Storage FC ports are reporting errors "FPIN FC credit stall peer congestion: Host WWPN 1000ba0cb25001d2, target WWPN 2028d039eacbdc30.) was sent immediately to hostd;"

Products

• VMware vCenter Server

Issue/Introduction

Storage FC ports are reporting errors "FPIN FC credit stall peer congestion: Host WWPN 1000ba0cb25001d2, target WWPN 2028d039eacbdc30.) was sent immediately to hostd;"

/var/run/log/vobd.log

vobd[2098149]  The event ([esx.problem.hardware.fpin.fc.peercongestion.creditstall] FPIN FC credit stall peer congestion: Host WWPN 1000ba0cb25001d2, target WWPN 2028d039eacbdc30.) was sent immediately to hostd;
vobd[2098149]  [HardwareCorrelator] 3795627109288us: [vob.hardware.fpin.fc.peercongestion.creditstall] FPIN FC credit stall peer congestion: Host WWPN 1000ba0cb25001d2, target WWPN 2028d039eacbdc30.
vobd[2098149]  [HardwareCorrelator] 3795671203310us: [esx.problem.hardware.fpin.fc.peercongestion.creditstall] FPIN FC credit stall peer congestion: Host WWPN 1000ba0cb25001d2, target WWPN 2028d039eacbdc30.
vobd[2098149]  The event ([esx.problem.hardware.fpin.fc.peercongestion.creditstall] FPIN FC credit stall peer congestion: Host WWPN 1000ba0cb25001d2, target WWPN 2028d039eacbdc30.) was sent immediately to hostd;
vobd[2098149]  [HardwareCorrelator] 3795637150557us: [vob.hardware.fpin.fc.peercongestion.creditstall] FPIN FC credit stall peer congestion: Host WWPN 1000ba0cb25001d2, target WWPN 2028d039eacbdc30.

Environment

• ESXi 8.x

Cause

Bottleneck at the NetApp target port allows B2B

Resolution

Please contact vendor (NetApp) to isolate.

Additional Information

https://kb.netapp.com/on-prem/ontap/da/SAN/SAN-KBs/Latency_and_scsitarget.fct.linkError_Errors_seen_on_multiple_FC_ports