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In the log file of my Ubuntu 12.04 installation, there are long list of log entries as below:

rpc.idmapd[818]: dirscancb: open(/run/rpc_pipefs/nfs/clntfa): No such file or directory rpc.idmapd[818]: dirscancb: open(/run/rpc_pipefs/nfs/clntfb): No such file or directory

What is wrong with my installation? How to revolve the issue?

Thanks in advance.

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It is a bug but these messages are harmless. It is related to NFS and I found this description regarding the same problem (though related to Redhat):

The daemon rpc.idmapd scans the /var/lib/nfs/rpc_pipefs/nfs/ directory periodically looking for NFS client mounts to communicate to. The daemon tried to open communication with a client mount but it disappeared in between looking for directory entries and opening them. NFS mount was umounted just before rpc.idmapd tried to communicate with it. This behavior is usually seen when autofs is configured on the system.

This needs to be reported here:

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Thanks Rinzwind for the kind reply. The bug has been submitted following the link provided. – slacktty Mar 25 '13 at 14:20

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