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Knowledge Base

How to handle the Timeout and Permission Denied problems of the client when the DNS servic

Publication Date:  2012-07-18  |   Views:  486  |   Downloads:  0  |   Author:  anliku  |   Document ID:  EKB1000004323


Issue Description

1. When the client mounts a file system, timeout occurs. Sometimes, the file system is successfully mounted after several attempts.
2. Some clients are denied when attempting to mount a file system due to their insufficient permissions.
3. Use account support for querying services. The NFS service is normal and nodes run properly.
4. Use account master for querying services. The NFS service is normal.
N8000> nfs server status
NFS Status on N8000_01 : ONLINE
NFS Status on N8000_02 : ONLINE
NFS Status on N8000_03 : ONLINE
NFS Status on N8000_04 : ONLINE
NFS Status on N8000_05 : ONLINE
NFS Status on N8000_06 : ONLINE
NFS Status on N8000_07 : ONLINE
NFS Status on N8000_08 : ONLINE
NFS Status on N8000_09 : ONLINE
NFS Status on N8000_10 : ONLINE
NFS Status on N8000_11 : ONLINE
NFS Status on N8000_12 : ONLINE

Alarm Information


Handling Process

1. Run the network DNS disable command using account master to disable the DNS service.
2. Delete all file system shares.
3. Share the file system at the specified IP address again.
4. Re-mount the file system on the client.

Root Cause

1. Client mounting timeout: When the client accesses the NFS server and the DNS is enabled, the NFS queries the client name in the DNS. Because the specified DNS domain name ( does not exist and a timeout will occur if no query result is found in 10 seconds, the client fails to mount the file system.
2. The Permission Denied problem can also occur when the DNS service is enabled.


The DNS service is enabled by default after the N8000 initialization. If the DNS service is not required, disable it manually. (See step 1 of the handling procedure.)