FAS2820 Controller fault LED ON and PCIe card link width mismatch

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Visibility:: Public

Votes:: 0

Category:: fas-systems

Specialty:: hw

Last Updated:

Applies to

FAS2820
ONTAP 9

Issue

Controller fault LED ON.

In the SP-LATEST-RUNTIME log, ID 13 LED is on.

tag origin fld fault reason count time ---- ------- ---- ------------- ------ ----- 1 bios /chassis-1/controller-a/pcie-2 - Expected x4, actual x1 1 Sun Aug 24 14:43:26 2025 Fault Lights On: /chassis-1 1 /chassis-1/controller-a 1 /chassis-1/controller-a/pcie-2 1 FRU LEDs status ====================== FRU LED ID 1 Controller Locate LED FRU LED ID 2 System Attention LED FRU LED ID 3 Controller Attention LED FRU LED ID 4 Controller Active LED ...... FRU LED ID 13 NVME 1 Attention LED led 1 is off led 2 is on led 3 is on led 4 is on ...... led 13 is on

pcie.stealth.link.errors is seen in EMS log:

[Node01:PCILink:pcie.stealth.link.errors:debug]:params:{'pcie_link_errors':'performance is not optimal for Intel Dual 10G NIC in slot1... LinkStatus(LkSp(3),LkWd(1),SClk,DLAct).'}

SP-LATEST-SYSTEM-EVENT-LOG reports following events:

Record 376: Sun Aug 24 14:43:27.000000 2025 [SysFW.notice]: Device 3/0/0 (MEZZ Dev 2) failed to retrain at max link width
Record 377: Sun Aug 24 14:43:27.000000 2025 [SysFW.notice]: - Expected x4, actual x1

PCI-HIERARCHY.XML

1	Br[18a8](0,16,0): PCI Device 8086:18a8 on Controller	LinkCap(MaxLkSp(3),MaxLkWd(8),ASPM(0),L0(4),L1(4),SurpDn,DLAct,Port(16))	LinkStatus(LkSp(3),LkWd(1),SClk,DLAct),
2	Dv[1563](3,0,0) in slot 1: Intel Dual 10G NIC in slot 1 on Controller	LinkCap(MaxLkSp(3),MaxLkWd(4),ASPM(3),L0(5),L1(4),Port(0))	LinkStatus(LkSp(3),LkWd(1),SClk),