[mythtv-users] nfs related frontend issues

R. G. Newbury newbury at mandamus.org
Tue Mar 20 19:53:20 UTC 2007

Blammo wrote:
> On 3/20/07, John Goulah <jgoulah at gmail.com> wrote:
>> Hi,
>>  I had recently switched all of my data partitions to an NFS mounted
>> filesystem.  Everything works fine, until the system is sitting for about a
>> day or so, and then when I try to go into the videos they are gone, and I
>> have to restart the frontend.  A similar problem happens with the music
>> portion, except it just freezes when I click it.  Again restarting the
>> frontend solves the problem. The NFS partitions stay mounted (I dont have to
>> remount anything).  Is there anything I can do to resolve this, or ideas on
>> where to look for the problem?
> You might check your firewall setup on both backend and frontend. I
> had an issue on a system I set up a few months ago, where iptables
> kept killing NFS sessions after a "idle timeout".
> You don't say what OS you're running, but if you're running a
> redhat-derivitive (centos, rhel, fedora etc) you should be able to
> stop the iptables service (as root) by typing "service iptables stop".
> Give it 24 hours and see if that helps.
> To stop the service from starting on boot (again on a redhat) you can
> type "chkconfig iptables off"

Better yet, if you are running Fedora (or RedHat derived) run the 
program 'lokkit' and select the box to allow NFS. Lokkit is a small 
program to configure the firewall/iptables in Fedora.

If you find that you cannot mount your NFS share, and get a 'permission 
denied' error, but that you can *then* get in, if you run 'iptables -F' 
on the NFS server end of the pair, then your firewall is set to refuse 
NFS access. Use lokkit.

You should NOT just turn of iptables: That IS your firewall!


              R. Geoffrey Newbury			
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           newbury at mandamus.org

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