Subject: Re: NFS server problems on sparc/sparc64?
To: John D. Baker <firstname.lastname@example.org>
From: Matthias Scheler <email@example.com>
Date: 11/28/2007 10:48:22
On Tue, Nov 27, 2007 at 06:12:01PM -0600, John D. Baker wrote:
> I've been running NetBSD-4.0_RC? on my file servers for some time and
> have been seeing lots of "nfs send error 32" messages on the console,
> clients reporting streams of "nfs server 'foo' not responding", nfs
> server 'foo' is alive again.
Do you use NFS over TCP or UDP?
NFS over UDP works very badly if the NFS server is faster than the client
or has faster networking. My NetBSD-i386 NFS server (1Gb/s ethernet)
managed to make my SPARCstation LX NFS client (10Mb/s ethernet) very
unhappy until I switched to NFS over TCP.
> SS5-85MHz, 128MB, hme, ISP wide single-ended, 4GB system disk (esp0)
> 2 18GB SCSI drives in RAIDframe RAID 1 (isp0)
Using interface "le0"?
> Ultra5-333MHz, 256MB, Adaptec AHC3940UW (ahc), 8GB system disk
> (cmdide0/wd0), 6 4GB SCSI drives in RAIDframe RAID-R (RAID 5
> w/rotated spare) (ahc0).
Using interface "hme0"?
If the answer to both questions is "yes" and you are using NFS over UDP
that is very likely the cause of your problems.
Matthias Scheler http://zhadum.org.uk/