[SunHELP] NFS mounting problems -Summary

[Dan Angolano]

Well, after receiving zero answers from the list I decided to do it the old
fashioned way...I did more research. :^)  

Here is what I found:

When you try to NFS mount over a series of wans, hubs, switches and routers
there is a chance of packet fragmentation.  Cisco router actually rejects
packets that are over a certain size (not sure what the standard packet size
was), so I had to specify a smaller read and write size during the mounting
of the NFS device.

#mount -F nfs -o rsize=1024 -o wsize=1024 server:/cdrom/cdrom0 /mnt

This gave me one RPC timeout and then worked.  The complete NFS doc / faq on
sunsolve is located at the URL below in case anyone needs it in the future.

http://sunsolve.sun.com/private-cgi/retrieve.pl?type=0&doc=infodoc%2F11987&d
isplay=plain


Dan

-----Original Message-----
From: Dan Angolano [mailto:dangolano at onexchange.com]
Sent: Tuesday, December 05, 2000 11:15 AM
To: 'sunhelp at sunhelp.org'
Subject: [SunHELP] NFS mounting problems


Hi Everyone,

I have a situation where I am trying to share a cdrom on a system in my
office to one in a datacenter a couple router hops away (and on a different
subnet).  For some reason when I try to mount the cdrom it times out.  I
know everything is set up correctly on the office side (I can mount the
office cdrom to any sun system in the office) and everything seems fine on
the datacenter side (was able to share a filesystem on a machine also in the
datacenter on the same subnet and successfully mounted that on all the
datacenter sun systems) but can't get the system to mount the remote cdrom
from the office.  

The systems have no problems talking to each other in any other way (can
telnet, ftp, etc).  All systems involved are running Solaris 7, and I have
started the nfs.server on the system I am sharing the cdrom from (like I
said, it works fine for systems on the same subnet).  Sharing device with
#share -F nfs -o ro /cdrom/cdrom0 line in the dfstab file (and as I said
above nfs.server is started and working for things in the office) and
mounting with #mount servername:/cdrom/cdrom0 /mnt.  


Am I missing something, or is there a problem with sharing the device
through a couple routers to a system on a different subnet?
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