Skip to main content
NetApp Knowledge Base

Node reboots with PANIC: process on cpuXX hung (wafl_exempt0X)

Views:
773
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
core
Last Updated:

Applies to

  • ONTAP 9
  • FAS/ AFF
  • Flexgroups

Issue

  • Nodes may intermittently panic with one or more of the following panic strings:
Process mgwd unresponsive for 380 seconds (mgwd startup: "(4139)") in process nodewatchdog on release 9.10.1P1 (C)
Process on cpu6 hung (wafl_exempt00) for 5006 milliseconds! in SK process wafl_exempt00
PANIC: process on cpu31hung (wafl_exempt03) for 5007 milliseconds! version: 9.11.1P2
  • EMS log recorded Nblade.CifsOperationTimedOut message:

xx/xx/2023 19:48:39 node01 ERROR  Nblade.CifsOperationTimedOut: Detected a timed out CIFS operation. SMB command for this operation: SMB2_COM_CREATE,
Number of times this command was suspended: 8002,
Number of times this command was restarted: 0,
Last CSM error during this operation: CSM_OK,
Remote blade UUID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxxx (node01),
Is QoS enabled: QoS_disabled,
Last nBlade error during this operation: SPINNP_ERR_NOMEM,
Client IP address: xxx.xxx.xxx.xxx,
Local IP address: xxx.xxx.xxx.xxx,
Target Vserver ID: 3,
Target disk's DSID: 1077,
Target Vserver Name: vs0

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.