[CentOS] NFS Mount - RH7.3 Server - CentOS 4.1 Client

Joshua Baker-LePain jlb17 at duke.edu
Thu Sep 29 12:58:06 UTC 2005

On Thu, 29 Sep 2005 at 10:03am, Tom Brown wrote

>> On 28/09/05, Will McDonald <wmcdonald at gmail.com> wrote:
>>> On 28/09/05, Tom Brown <tom.brown at goodtechnology.com> wrote:
>>>> Just upgrading one of my dev servers - I'm replacing a current box that
>>>> runs 7.3 to one that runs CentOS 4.1
>>>> Currently the 7.3 dev box talks to a fileserver also running 7.3 over
>>>> NFS and that works fine. I'm now trying to get the CentOS 4.1 box to
>>>> talk NFS to the 7.3 server.
>>>> When i try and mount the NFS share on the CentOS box i get the following
>>>> error
>> Oh, and don't forget to check /etc/exports on the server. :)
> Yep thanks for the tips all - It turned out that the mount command was to 
> 'blame' - Using mount from the CentOS 4.1 box gave that error but copying the 
> mount command from the previous 7.3 box and using that to mount the share 
> worked fine.
> Odd and a bit hacky but at least it works - Seems mount has changed somewhat 
> and newer versions don't like talking to older server.

What does your fstab entry on the centos box look like?  As of centos4, 
NFS mounts are TCP by default.  So, unless you specify UDP, it'll try TCP 
which, obviously, the 7.3 server isn't doing.  I'd bet that's your 

Joshua Baker-LePain
Department of Biomedical Engineering
Duke University

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