RE: root nfs boot problems

I don't believe the "neighbour table overflow" errors are the problem.  I
get them frequently but otherwise have success.

It looks like a problem on your nfs server.  The "unable to get nfsd port
number from server" and "unable to get mountd port number from server"
messages indicate that at minimum, the portmapper is not running on your
server.  Perhaps mountd and/or nfsd are also not running.

If you've not done this already, you should verify from another machine
that you can mount the root file system from your server.  Also, it's
always been useful for me to monitor system logs on my server when
debugging nfs root mounts - make sure your target board actually is making
contact, make sure your server grants access, etc...

Don Holmgren
Fermilab


On Tue, 21 Mar 2000, Stephan Ruettiger (r0337c) wrote:

Hello Simon,

i have actually the same problem as you have in NOV 99 (showing below),
but i don't find the answer to your problem in the mailinglist-archive
(linuxppc-embedded). So i hope you can tell me how you have solved this
problem. I use a 2.2.13 kernel with math emulation.
The same configuration with the old kernel (2.1.119 - no module support)
works fine.

quoted

I am trying to boot embedded-2.2.5 kernel using a nfsr root filesystem.
Here is a log of the console session.  I get a "neighbour table
overflow" error.  What does this mean ?  I have a look in the source but
can't figure out what is happening.

Thanks,
Brendan Simon.

loaded at:     FF801000 FF813BAC
relocated to:  00100000 00112BAC
board data at: 001001F8 00100214
relocated to:  00200100 0020011C
zimage at:     FF808000 FF8690B9
avail ram:     00201000 00400000

Linux/PPC load: root=/dev/nfs nfsaddrs=203.21.127.132:203.21.127.160
nfsroot=203.21.127.160:/sys/ads-root
Uncompressing Linux...done.
Now booting the kernel
Linux version 2.2.5 (root@k9) (gcc version egcs-2.91.66 19990314
(egcs-1.1.2 rel
ease)) #39 Fri Nov 12 17:49:11 EST 1999
Boot arguments: root=/dev/nfs nfsaddrs=203.21.127.132:203.21.127.160
nfsroot=203
.21.127.160:/sys/ads-root
time_init: decrementer frequency = 93750000/60
Calibrating delay loop... 24.52 BogoMIPS
Memory: 15188k available (700k kernel code, 464k data, 32k init)
[c0000000,c1000
000]
POSIX conformance testing by UNIFIX
Linux NET4.0 for Linux 2.2
Based upon Swansea University Computer Society NET3.039
NET4: Unix domain sockets 1.0 for Linux NET4.0.
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP
Starting kswapd v 1.5
CPM UART driver version 0.02
ttyS00 at 0x0280 is a SMC
ttyS01 at 0x0100 is a SCC
ttyS02 at 0x0200 is a SCC
pty: 256 Unix98 ptys configured
RAM disk driver initialized:  16 RAM disks of 4096K size
eth0: CPM ENET Version 0.2, 00:d0:1f:11:22:33
IP-Config: Guessing netmask 255.255.255.0
neighbour table overflow
neighbour table overflow
neighbour table overflow
neighbour table overflow
portmap: server 203.21.127.160 not responding, timed out
Root-NFS: Unable to get nfsd port number from server, using default
Looking up port of RPC 100005/1 on 203.21.127.160
neighbour table overflow
neighbour table overflow
neighbour table overflow
neighbour table overflow
portmap: server 203.21.127.160 not responding, timed out
Root-NFS: Unable to get mountd port number from server, using default
neighbour table overflow
neighbour table overflow
neighbour table overflow
neighbour table overflow
mount: server 203.21.127.160 not responding, timed out
Root-NFS: Server returned error -5 while mounting /sys/ads-root
VFS: Unable to mount root fs via NFS, trying floppy.
VFS: Cannot open root device 02:00
Kernel panic: VFS: Unable to mount root fs on 02:00
Rebooting in 180 seconds..<0>Kernel panic: Kernel Mode Software FPU
Emulation
Rebooting in 180 seconds..Machine check in kernel mode.
Caused by (from msr): regs c0f4bb30 Machine check signal - probably due
to mm fa
ult

------------------------
Stephan Ruettiger
Motorola Munich
r0337c@email.sps.mot.com
------------------------

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