Subject: kernel panic with NFS server
To: None <port-vax@netbsd.org>
From: Jochen Kunz <jkunz@unixag-kl.fh-kl.de>
List: port-vax
Date: 06/26/2003 21:14:05
Hi.

I want to do some testing of rf(4) and ts(4) on my VAX 4000-400 and
prepare it for the exhibition on the LinuxTag... I did the usual
mop/dhcp/nfs netboot setup. Bootserver is a MicroVAX 3100-95 running
NetBSD 1.6R. I got=20

> boot netbsd
1517664read text: Unknown error: code 60
netbsd: boot failed: Unknown error: code 60

when the client tried to load the kernel. This worked before when there
was an old NetBSD 1.5-somelatecurrentfromlastsummer on the MicroVAX
3100-95.=20

Then I mountd the NFS exported directory on a Tru64 5.1 machine and
tried to copy the kernel from the VAX. I could do a ls -l of the
exported directories, but when I did the cp I got on the VAX:

mbuf siz=3D32896
panic: Bad nfs svc reply
Stopped in pid 212.1 (nfsd) at  netbsd:nfssvc_nfsd+0x4b5:       movl  =20
r1, r6
db> t
panic: Bad nfs svc reply
Stack traceback :
0x8c066d7c: nfssvc_nfsd+0x4b5(0x8c066e24,0x221c0,0x80d2f870)
0x8c066ddc: sys_nfssvc+0x407(0x80d2f870,0x8c066f60,0x8c066f58)
0x8c066f14: syscall+0xde(0x8c066fb4)

I tried the same with a SGI machine running IRIX 6.5.19 and got the same
result. (If this is important: The SGI and the Alpha are on a FDDI ring
and connected via a FDDI Ethernet bridge. I didn't have any trouble with
this device so I asume it works OK.)=20

Also: I got some strange hangs of user processes on the MicroVAX 3100-95
in state "D" when they tried to access the NFS server on the Tru64 5.1
machine. I got this three or four times but was not able the locate the
problem exactely. It seamd to happen when ~/bin was read. So it looks
there are some issues in the NFS client code as well.=20
--=20


tsch=FC=DF,
       Jochen

Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/