*BSD News Article 46357


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From: rmacklem@uoguelph.ca (Rick Macklem)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: FBSD 2.0.5R: "Port mapper failure" and NFS lockups
Date: 3 Jul 1995 15:59:06 GMT
Organization: University of Guelph
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References: <1995Jun30.214222.10887@tellab5.tellabs.com>
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Mike Borowiec (mikebo@tellabs.com) wrote:
[stuff deleted]
: What's more, one of the NFS servers I use is multi-homed. Coincident
: with the above failures, I was suddenly unable to mount my home
: directory partition via the interface I had been using for several
: days. The mount hung my boot sequence, so I booted single user and
: changed /etc/fstab to reflect a different interface on the same
: server and - voila - it worked just fine. I should point out that
: there are many other NFS clients using this server and none have had
: these problems. See the Sniffer trace of the problem below, which
: seems to indicate a problem with port numbers (?).

Normally NFS will expect the server to reply from the same IP address that
the reuest was sent to and this could cause grief for a multi-homed server.
Try the "-c" mount option to turn off the "UDP connect", so that any reply
to the client's IP address/port # will be seen by the mount point.

(If the server is not on the same LAN as the client, I would also suggest
 taking a close look at "netstat -r" to see that your route(s) to the
 server make sense.)

Good luck with it, rick