On Thu, 4 Sep 1997, Alexei Rodriguez wrote:
Anybody else out ther using FDDI for their NetApp and using Sun's as clients?
Yep. Eight dual-attached Ultras to an F220 and an F230, also dual-attached. All are on the same subnet, talking via two Cisco 1400's. I am using NFSv2 with UDP mounts.
Looking through the logs on the clients, we have "NFS server not responding" errors (for 0 sec duration) across all the clients. Those that beat more heavily on the NetApp (like one box that constitutes 70% of the traffic) has these every few minutes.
We have also had the NetApp stop serving NFS over the FDDI interface. Taking the interface down and bringing it back up has solved the problem. But what is the root of this problem? Bad NIC?
I used to see this when I had a misconfigured news server. The nnrpd's weren't find the overview files, and NFS traffic skyrocketed as each nnrpd scanned entire newsgroups to build up overview data on the fly. NFS timeouts and non-ping always occurred during very busy periods though. The load meter on the 1400's peaked at nearly 100%, and usually hovered around 60%. Not only would the Netapps stop responding to pings, but some of the Ultras too.
Once I fixed the overviews problem, all NFS-related problems disappeared as well.