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Mountd "name service lookup took 5 seconds for <client IP address>" Messages (Doc ID 2862865.1)

Last updated on APRIL 19, 2022

Applies to:

Solaris Operating System - Version 11.4 and later
Information in this document applies to any platform.

Symptoms

A customer with an extremely busy - with thousands of NFS clients - was seeing several messages per day such as these below:

 Apr  4 14:55:08 <NFS server hostname> mountd[1228]: [ID 819143 daemon.warning] umount: name service lookup took 5 sec for '<client IP address>
 Apr  4 16:00:38 <NFS server hostname> mountd[1228]: [ID 819143 daemon.warning] umount: name service lookup took 5 sec for '<another client IP address>'

 Apr  5 09:00:14 <NFS server hostname> mountd[1228]: [ID 819143 daemon.warning] umount: name service lookup took 5 sec for '<client IP address>'
 Apr  5 11:15:13 <NFS server hostname> mountd[1228]: [ID 819143 daemon.warning] umount: name service lookup took 5 sec for '<client IP address>'
 Apr  5 17:20:45 <NFS server hostname> mountd[1228]: [ID 819143 daemon.warning] umount: name service lookup took 5 sec for '<client IP address>'

 With so many clients, the IP addresses being looked up varied.   Naturally, the customer was concerned about these messages, although there was no other apparent issue at these times. 

Cause

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In this Document
Symptoms
Cause
Solution
References


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