SAS Expander has set the Chassis LED ON remains after PSU replacement even if reboot BMC
Applies to
- ONTAP 9
- FAS2720
- Baseboard Management Controller(BMC)
Issue
- Chassis attention LED remains on after PSU replacement:
get_leds
========
FRU LEDs status
======================
FRU LED ID 1 = BMC Locate LED
FRU LED ID 2 = BMC System LED
FRU LED ID 3 = BMC Controller Attention LED
FRU LED ID 4 = BMC Controller Active LED
...
FRU LED ID 1 is off
FRU LED ID 2 is on. Set by Expander
FRU LED ID 3 is off
FRU LED ID 4 is on
- PSU looks good after replacement:
/usr/local/bin/environ -show_all
================================
Sensor Name State Current Critical Warning Warning Critical
Reading Low Low High High
-------------------------------------------------------------------------------------------------
PSU2 Bad FALSE
PSU1 Bad FALSE
PSU2 GOOD
PSU1 GOOD
PSU2 ON ON
PSU1 ON ON
PSU1 INFO FRU_AVAIL
PSU1 INFO FRU_AVAIL
PSU1 FRU GOOD
PSU2 FRU GOOD
- Service event shows both nodes set chassis LED on:
Node ID Event Location Event Description
---------------- --- ---------------------------------- ----------------------
Node-01 1 Chassis 1 SAS Expander has set the Chassis LED ON
Node-02 1 Chassis 1 SAS Expander has set the Chassis LED ON
- System health subsystem shows no fault:
Subsystem Health
----------------- ------------------
SAS-connect ok
Environment ok
Memory ok
Service-Processor ok
Switch-Health ok
CIFS-NDO ok
Motherboard ok
IO ok
MetroCluster ok
MetroCluster_Node ok
FHM-Switch ok
FHM-Bridge ok
SAS-connect_Cluster ok
- Even if delete the service event then reboot BMC, or manually set the led off, issue persists, and the service event raised again.