NFS mount root problem

NFS mount root problem

[Tim Woo]

Hi,

I am unable to mount to the host.  I'm using MBX860 and I'm having
problem to mount to the host's NFS.  Can anyone please help.  I have
enclosed the log in the following.  Thank you very much.

Tim

EPPC-Bug>pl 20 0
Network Booting from: MPC860, Controller 20, Device 0
Loading: /tftpboot/192.168.0.2/zImage

Client IP Address      = 192.168.0.2
Server IP Address      = 192.168.0.1
Gateway IP Address     = 0.0.0.0
Subnet IP Address Mask = 255.255.255.0
Boot File Name         = /tftpboot/192.168.0.2/zImage
Argument File Name     =

Bytes Received =&471750, Bytes Loaded =&471750
Bytes/Second   =&235875, Elapsed Time =2 Second(s)
loaded at:     00210000 00204AA4
relocated to:  00100000 000F4AA4
board data at: 003F4558 003F4580
relocated to:  00200100 00200128
zimage at:     00216000 00271FD4
avail ram:     00272000 00400000

Linux/PPC load:
Uncompressing Linux...done.
Now booting the kernel
Linux version 2.2.13 (thwoo@linuxnanpa) (gcc version 2.9-edk-000221) #3
Mon Jul 2 16:19:36 EDT 1Boot arguments: root=/dev/nfs rw
time_init: decrementer frequency = 150000000/60
Calibrating delay loop... 39.83 BogoMIPS
Memory: 3084k available (704k kernel code, 308k data, 0k init)
[c0000000,c0400000]
DENTRY hash table entries: 262144 (order: 9, 2097152 bytes)
Buffer-cache hash table entries: 32768 (order: 5, 131072 bytes)
Page-cache hash table entries: 1024 (order: 0, 4096 bytes)
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, IGMP
TCP: Hash tables configured (ehash 4096 bhash 4096)
Starting kswapd v 1.5
Serial driver version 4.27 with no serial options enabled
ttyS00 at 0x03f8 (irq = 4) is a 16450
ttyS01 at 0x02f8 (irq = 3) is a 16450
ttyS02 at 0x03e8 (irq = 4) is a 16450
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, 08:00:3e:2d:35:ab
Sending BOOTP requests.... OK
IP-Config: Got BOOTP answer from 192.168.0.1, my address is 192.168.0.2
Looking up port of RPC 100003/2 on 192.168.0.1
Root-NFS: Unable to get nfsd port number from server, using default
Looking up port of RPC 100005/1 on 192.168.0.1
Root-NFS: Server returned error -13 while mounting /tftpboot/linuxbrd
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..<0>Kernel panic: Kernel Mode Software FPU
Emulation
Rebooting in 180 seconds..<0>Kernel panic: Kernel Mode Software FPU
Emulation
Rebooting in 180 seconds..<0>Kernel panic: Kernel Mode Software FPU
Emulation
Rebooting in 180 seconds..


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Re: NFS mount root problem

[Michael Habermann]

At 09:52 PM 7/2/2001 -0400, Tim Woo wrote:
>I am unable to mount to the host.  I'm using MBX860 and I'm having
>problem to mount to the host's NFS.  Can anyone please help.  I have
>enclosed the log in the following.  Thank you very much.

Have you checked if you can mount the directory from the host PC and
another PC?
mkdir x
mount -t nfs <ip>:<dir> x
ls x

Maybe NFS is not started, or your PC has a firewall which is default at Red
Hat 7.1.


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Re: NFS mount root problem

[Wolfgang Denk]

In message <3B412551.60D20D82@engmail.uwaterloo.ca> you wrote:
>
> I am unable to mount to the host.  I'm using MBX860 and I'm having
> problem to mount to the host's NFS.  Can anyone please help.  I have
> enclosed the log in the following.  Thank you very much.
...
> Mon Jul 2 16:19:36 EDT 1Boot arguments: root=/dev/nfs rw

These boot arguments are not sufficient for root filesystem over NFS.

You must add the "nfsroot=" option:

	nfsroot=[<server-ip>:]<root-dir>[,<nfs-options>]

See the file "Documentation/nfsroot.txt" in your Linux source tree.

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
To be is to program.

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Re: NFS mount root problem

[Wolfgang Denk]

In message <3B417AF8.DDC7F300@engmail.uwaterloo.ca> you wrote:
>
> This is what I have typed, "nfsroot=192.168.0.1:/tftpboot/192.168.0.2"
>
> The following is the message from /var/log/messages
>
> Jul  3 03:57:11 linuxnanpa tftpd[1082]: tftpd: trying to get file:
> /tftpboot/192.168.0.2/zImage
> Jul  3 03:57:17 linuxnanpa dhcpd: BOOTREQUEST from 08:00:3e:2d:35:ab via
> eth0
> Jul  3 03:57:17 linuxnanpa dhcpd: BOOTREPLY for 192.168.0.2 to linuxbrd
> (08:00:3e:2d:35:ab) via eth0
> Jul  3 03:57:23 linuxnanpa mountd[998]: refused mount request from
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> linuxbrd for /tftpboot/linuxbrd (/): no export entry
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

> Please help, thanks.

It helps when you just read the error messages.

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
Hacking's just another word for nothing left to kludge.

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