[Lustre-discuss] Desperate problems with Lustre 1.6.5.1

[Jeremy Mann]

Andreas Dilger wrote:
> On Aug 01, 2008  13:16 -0500, Jeremy Mann wrote:
>> Any ideas to the latency issue? I've tried everything I can and it only
>> happens with my frontend node. If I try other client nodes, it works.
>
> Do you have xinetd or selinux or other port filtering enabled?
>
> Try running tcpdump on the server to see if you get any traffic at all.
>
> You can also try "telnet {server} 988" to see if you get any connection
> at all.  It won't print anything to the screen, but after typing something
> and pressing enter it will disconnect.

It didn't occur to me at the time to check iptables on the compute nodes.
There were in fact iptables firewalls on all of our compute nodes. Once I
disabled them, it started working.


-- 
Jeremy Mann
jeremy at biochem.uthscsa.edu

University of Texas Health Science Center
Bioinformatics Core Facility
http://www.bioinformatics.uthscsa.edu
Phone: (210) 567-2672