Slow boot with NFS, server not responding

[Matej Kupljen]

Hi 

> I am having trouble booting the kernel with a root file system over NFS.
> Once the kernel has mounted the file system, it cycles through this pair of
> messages, endlessly:
> 
> 	nfs: server 192.168.0.39 not responding, still trying
> 	nfs: server 192.168.0.39 OK

We had the same problems on a DBAU1200 board, because that board uses
smc91c111 chip, which has small RX buffers, and a lot of RX overruns
happened.

We solved this by specifying additional kernel command line parameter:
nfsroot=,tcp
which specifies that for the NFS TCP should be used instead of UDP.

I hope this helps.

BR,
Matej