Skip to main content
NetApp Knowledge Base

AFF A400/FAS8300/FAS8700 reboot due to L2 watchdog reset

  1. Last updated
  2. Save as PDF
Views:
943
Visibility:
Public
Votes:
0
Category:
fas-systems
Specialty:
hw
Last Updated:

Applies to

  • ONTAP 9
  • AFF A400
  • FAS 8300
  • FAS 8700

Issue

  • Unexpected node reboot due to L2 watchdog reset.
  • ONTAP Event Messages (EMS) errors from surviving partner node:
NOTICE cf.hwassist.takeoverTrapRecv: hw_assist: Received takeover hw_assist alert from partner(node-01), system_down because reset_via_sp.
 
NOTICE cf.hwassist.takeoverTrapRecv: hw_assist: Received takeover hw_assist alert from partner(node-01), system_down because l2_watchdog_reset.
 
OR
 
[node-1: cf_hwassist: cf.hwassist.takeoverTrapRecv:notice]: hw_assist: Received takeover hw_assist alert from partner(node_name-2), system_down because power_off_via_sp.
  • ONTAP PANIC message from the impacted node:
[node-2: send_boot_msg_thread: mgr.stack.string:notice]: Panic string: watchdog nmi on cpu 8, hang cpu is 1 in process idle: cpu8 on release...
  • BMC logs report the NMI errors:

BMC> system log sel

df | 11/06/2021 | 01:58:24 | System Event #0xff | Timestamp Clock Sync | Asserted
e0 | 11/06/2021 | 02:12:53 | Watchdog 2 #0xb1 | Timer interrupt (NMI/SMS/OS) | Asserted
e1 | 11/06/2021 | 02:12:53 | Critical Interrupt #0xb0 | NMI/Diag Interrupt | Asserted
e2 | 11/06/2021 | 02:12:56 | Watchdog 2 #0xb1 | Hard reset (NMI/SMS/OS) | Asserted
e3 | 11/06/2021 | 02:12:56 | Power Unit #0xb2 | Power reset | Asserted | from channel 15

Sign in to view the entire content of this KB article.

New to NetApp?

Learn more about our award-winning Support

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.