Subject: bin/9561: nfs client breaks
To: None <>
From: Dan McMahill <>
List: netbsd-bugs
Date: 03/07/2000 07:30:45
>Number:         9561
>Category:       bin
>Synopsis:       nfs client fails
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    bin-bug-people (Utility Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Mar  7 07:30:00 2000
>Originator:     Dan McMahill

>Release:        NetBSD-1.4.1 (i386 and sparc)<NetBSD-current source date>
System: NetBSD 1.4.1 NetBSD 1.4.1 (WAYNE) #0: Sat Jan 8 15:00:10 EST 2000 i386


I have 3 NetBSD-1.4.1 machines (1-sparc, 2-i386) on a large network at school.
My home directory is on a solaris-2.6/sparc box and my mail directory is on 
a solaris-2.7/sparc box.  I use amd on the NetBSD machines to mount these 

When the network goes down for a bit (a minute or 2), the NetBSD machines fail
to remount the mail directory and the boxes become unresponsive.  I can,
however, log in at the console as root and reboot which fixes things.  My
home directory, though, does properly remount.

My more detailed setup is:

lrwxrwxrwx  1 root  wheel  25 Mar  7 10:17 /homes/mcmahill -> 

lrwxrwxrwx  1 root  wheel  17 Mar  7 10:17 /fs/bitter/home0 -> 

bitter is solaris-2.6.  This directory comes back up when the network
comes back.


lrwxr-xr-x  1 root  wheel  7 Jan  5 21:02 /var/mail -> /u/mail
lrwxrwxrwx  1 root  wheel  13 Mar  7 10:17 /u/mail -> /amd/mtl/mail

mtl is solaris-2.7.  This directory doesn't come back when the network
comes back.

In addition, when the machine is in this unhappy state, if I try

amq -m

it responds with a portmap timeout.


setup amd to nfs mount a directory from a solaris-2.7/sparc machine.

unplug the network for a bit, reattach the network, observe that the nfs
mounted directory doesn't come back.


I don't know of either a fix or a work around.