No filesystem could mount root

Hi all

We are porting linux 2.6.24 on a board with powerpc processor and with AMD
79C972 ethernet chip

Thru ramdisk I can able to boot the board and i can do the ifconfig eth0
up..

When I try to boot the board with nfs iam getting the following

NET: Registered protocol family 1
NET: Registered protocol family 17
RPC: Registered udp transport module.
RPC: Registered tcp transport module
List of all partitions:
No filesystem could mount root, tried:  ext3 ext2 msdos ntfs
Kernel panic - not syncing: VFS: Unable to mount root fs on
unknown-block(1,0)
Rebooting in 180 seconds..

1. In the kernel the nfs related configs are enabled properly
2. The nfs server and file system is proper( I have mounted and checked the
nfs server & file system thru another working setup)
3. The ethernet driver  pcnet32.c  under drivers/net  is okkk it seems becaz
it is working when i boot the board thru ramdisk

Please shed me some light where to look and what may be the reason iam
getting the above error when i boot thru NFS

Thanks in advance

NET: Registered protocol family 1
NET: Registered protocol family 17
RPC: Registered udp transport module.
RPC: Registered tcp transport module
List of all partitions:
No filesystem could mount root, tried:  ext3 ext2 msdos ntfs

There are no messages from the kernel that it's trying NFS. You can
check the boot arguments you are passing to the kernel.

There are no messages from the kernel that it's trying NFS. You can
check the boot arguments you are passing to the kernel.

The boot arguments are passed correctly only.

setenv bootargs console=ttyS0,57600 root=/dev/nfs
nfsroot=192.168.0.6:/root/FILESYSTEM/target/target-minimal
ip=192.168.0.200:192.168.0.6:192.168.0.1:255.255.255.0::eth0

still Iam getting the above said error

Any clue??

mahendra varman ha scritto:

quoted

There are no messages from the kernel that it's trying NFS. You can
check the boot arguments you are passing to the kernel.

The boot arguments are passed correctly only.

setenv bootargs console=ttyS0,57600 root=/dev/nfs
nfsroot=192.168.0.6:/root/FILESYSTEM/target/target-minimal
ip=192.168.0.200:192.168.0.6:192.168.0.1:255.255.255.0::eth0

still Iam getting the above said error

Any clue??



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Sometimes ago I had the same problem, I don't exactly remember the 
problem, but it was related to the NFS server configuration. Check it out.

Regards,

-- 
Marco Stornelli
Embedded Software Engineer
CoRiTeL - Consorzio di Ricerca sulle Telecomunicazioni
http://www.coritel.it

marco.stornelli@coritel.it
+39 06 72582838

Hi,

mahendra varman schrieb:

setenv bootargs console=ttyS0,57600 root=/dev/nfs
nfsroot=192.168.0.6:/root/FILESYSTEM/target/target-minimal
ip=192.168.0.200:192.168.0.6:192.168.0.1:255.255.255.0::eth0

I had a similar problem. Setting the rw flag helped, e.g.
... root=/dev/nfs rw nfsroot ...
                   ^^
Kind regards,
Jens