Device failed to train at max link width degraded on AFF A400
Applies to
- AFF A400
- FAS8300
Issue
- After the ONTAP upgrade,
device failed to train at max link width degradederrors are seen during boot, and autoboot is aborted.
Example:
PCI Bus initialization start.
Device 19/8/0 (SLOT-1) failed to train at max link width degraded
- Expected x16, actual x8Console output devices connect.Version 2.20.1276. Copyright (C) 2019 American Megatrends, Inc.
BIOS Date: 12/31/2019 11:15:09 Ver: 16.1
Press <DEL> or <ESC> to enter setup.
Press <F7> to enter Boot Menu.
[System Information]
CPU = 2 Processors Detected
CPU 0 : Intel(R) Xeon(R) Silver 4210 CPU @ 2.20GHz Core : 10
CPU 1 : Intel(R) Xeon(R) Silver 4210 CPU @ 2.20GHz Core : 10
Memory Size : 147456 MB
Ready to boot.
Boot Loader version 6.4.13
Copyright (C) 2000-2003 Broadcom Corporation.
Portions Copyright (C) 2002-2022 NetApp, Inc. All Rights Reserved.
Current TPM firmare version: 5.63.3353.0
*****************************************
*** Booted from Backup Firmware Image ***
*****************************************
ACPI RSDP Found at 0x61f3c000
Abort AUTOBOOT
LOADER-A>
- ONTAP is booted with the command
boot_ontap:
LOADER-A> boot_ontap
Loading X86_64/freebsd/image2/kernel:0x200000/12310540 0xe00000/329432 0xe51000/3813952 0x11f4240/6340032 Entry at 0xffffffff80338000
Loading X86_64/freebsd/image2/platform.ko:0x1800000/4315408 0x1c1d910/652768
Starting program at 0xffffffff80338000
- EMS log showing
pcie.stealth.link.errors:
Example:
[node01: PCI Link: pcie.stealth.link.errors:debug]: params: {'pcie_link_errors': 'performance is not optimal for Mellanox CX5 Ethernet in slot 1 on Controller. Dv[1017](26,0,0) in slot 1: LinkCap(MaxLkSp(3),MaxLkWd(16),ASPM(3),L0(6),L1(2),SurpDn,DLAct,Port(8)), LinkCap(MaxLkSp(3),MaxLkWd(16),ASPM(0),L0(7),L1(7),Port(0)), LinkStatus(LkSp(3),LkWd(8),DLAct). '}
- X1148A card is installed in slot 1.
Example:
sysconfig: slot 1 OK: X1148A: 40G/100G Ethernet Controller CX5
sysconfig: slot 3 OK: X1151A: 2p 100G Naples-100 Smart IO
sysconfig: slot 5 OK: X1148A: 40G/100G Ethernet Controller CX5
sysconfig: There are no configuration errors.