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   >  Configuring the NFS Server
   >  Configuring an NFS Client
   >  Troubleshooting NFS Problems

 

Troubleshooting Network File System (NFS) Problems on Linux

Gauging the Nature of the Problem

It's always best to carry out a quick assessment of the situation first:

  • If other clients can see the NFS share, then the problem is likely to be on the client side
  • If no clients can see the NFS share, then the problem is likely to be on the server side

Client Problems

If you have a problem on a particular client, try the following:

  • Check your /etc/fstab file for errors
  • Try mounting the filesystem from the command line : if it works, the problem is in /etc/fstab
  • Try restarting the portmap (sudo /etc/init.d/portmap restart) then remounting

Server Problems

If you have a problem on the server, try the following:

  • Check for errors in the syslog using grep "NFS" /var/log/syslog
  • Check the local filesystem you are exporting (e.g. /dev/sdb) is mounted
  • Check if the exported filesystem (e.g. /exports/myData) is mounted: if not, check the /etc/fstab file for errors
  • Try mounting the filesystem from the command line : if it works, the problem is in /etc/fstab
  • Check the /etc/exports file for errors
  • Try restarting the NFS daemon (sudo /etc/init.d/nfs-kernel-server restart) then remounting
  • Try restarting the portmap (sudo /etc/init.d/portmap restart) then remounting

If you still have problems:


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