Re: Sun-4 severe NFS problem

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Article #12415

#12415

From: Christopher A. Welty
Date: Wed, 03 May 1989 07:00

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dan@watson.bbn.com (Dan Franklin) writes:
>We're having severe NFS problems involving our (only) Sun 4/110, running
>SunOS 4.0.1. The symptom is that a process attempting to copy (cp) a
>"large" file (greater than 2k bytes or so) between this machine and any of
>several others, including a Sun-3/160 (SunOS 3.4), a MicroVAX (Ultrix
>2.3), and our diskless Sun-3/50 machines (SunOS 3.4), will almost always
>hang.

We used to have this problem and learned:

Whenever you mount an NFS filesystem to/from a machine that is vastly
different in speed (for us this is sun2<->sun3 and sun3<->sun4 and
sun2<->sun4) you should use the following options to mount:

slfs1.cs.rpi.edu:/us1 /fs1/us1 nfs bg,rw,soft,rsize=2048,wsize=2048,timeo=100 1 5

(this is a line from our fstab).  You should also never mount nfs
partitions at the root level.

Christopher Welty  ---  Asst. Director, RPI CS Labs
weltyc@cs.rpi.edu             ...!njin!nyser!weltyc

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!husc6!rice!sun-spots-request
From: weltyc@fs3.cs.rpi.edu (Christopher A. Welty)
Newsgroups: comp.sys.sun
Subject: Re: Sun-4 severe NFS problem
Keywords: Networks
Message-ID: <8904201820.AA14209@fs3.cs.rpi.edu>
Date: 3 May 89 07:00:30 GMT
Sender: usenet@rice.edu
Organization: Sun-Spots
Lines: 21
Approved: Sun-Spots@rice.edu
Original-Date: Thu, 20 Apr 89 14:20:04 EDT
X-Sun-Spots-Digest: Volume 7, Issue 262, message 5 of 14
X-Issue-Reference: v7n216