Re: strange behaviour of NFS

[Denice <deatrich lcavsun1 epfl ch>]

On Wed, 29 Sep 1999 Tony_Melia Dell com wrote:

> I am using redhat 6.0 to mount a SCO Openserver 5.0.5 NFS share.  I for had
> permission problems, but I managed to get them sorted and mount the share.
> I mount it under /shared.  If I use 'dd if=/dev/zero of=/shared/test bs=1k
> count =1000' to create a 1M test file, it is stored on the local filesystem
> instead of going over the network to the /shared directory.  If I do an ls
> after doing the dd command, I cannot see the test file, I can only see it
> after I unmount /shared.  I have had no problem mount linux <-> linux
> shares.
> 
> It is as if files are readable over the NFS link, but new files are created
> locally...the same way as the overlay filesystem works.  I am mounting it
> with 'defaults,rw' as the only mount option.


There are some known NFS issues.  Try adding these mount options (assuming
SCO likes an 8k buffer size).  The sync option is *not* ideal, but the
larger read-write buf sizes help performance:

 -sync,rsize=8k,wsize=8k


I'm going to upgrade knfsd this week on one of my machines. If I am happy
with it I will patch all my machines; and if you like, let you know via
email..  

-- 
denice.deatrich @ NospaM.epfl.ch, EPFL - LCAV / LCM    PH: +41 (21) 693-5643
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