SLES NFS client machine cannot obtain locks on NetApp Filer

This document (7023482) is provided subject to the disclaimer at the end of this document.

Environment

SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server 11

Situation

A SLES machine acting as a NFS client to a NetApp Filer is running a database application and cannot obtain locks for files on the NetApp Filer.  Even after rebooting the SLES machine, new locks are denied.  .  NetApp lists of files which are locked is not showing any culprits.  However, packet captures of the nfs and lock manager activity confirm that the NetApp side is denying locks.

Resolution

The following commands were used at the NetApp device, after which NFS client locking was successful again.  These commands have been provided by a 3rd party and have not been verify by SUSE in any way:
 
sm_mon -l
lock break -h <nfs-client-hostname>
lock break -p nlm
 
Where "<nfs-client-hostname>" is replaced with the name of the SLES host which is the NFS client in question.

Cause

 

Disclaimer

This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

  • Document ID:7023482
  • Creation Date: 30-Oct-2018
  • Modified Date:03-Mar-2020
    • SUSE Linux Enterprise Server

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