Re: [Ltib] Kernel Panic while mounting NFS

[Peter Barada]

On Wed, 2010-08-11 at 21:03 +0800, casper iway wrote:
>     Dev Board: LPC3131 board
>     
>     Dev Host Environment: Ubuntu 10.04
>     
>     Using LTIB...
>     
>     
>     Hi,
>     
>     
>     Need advise, I'm trying to accomplish an NFS mounted root filesystem setup but i'm having problem during the mounting of the filesystem on my target board.  See the portion of the error i got below. 
>     
>     
>     
>     Looking up port of RPC 100003/2 on 192.168.0.101
>     Looking up port of RPC 100005/1 on 192.168.0.101
>     Root-NFS: Server returned error -13 while mounting /home/raul/ltib/rootfs
>     VFS: Unable to mount root fs via NFS, trying floppy.
>     VFS: Cannot open root device "nfs" or unknown-block(2,0)
>     Please append a correct "root=" boot option; here are the available partitions:
>     1f00          240896 mtdblock0 (driver?)
>     1f01            4096 mtdblock1 (driver?)
>     b300          999936 mmcblk0 driver: mmcblk
>       b301          997920 mmcblk0p1
>       b302            1984 mmcblk0p2
>     Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
>     [<c002b9b4>] (unwind_backtrace+0x0/0xd4) from [<c003f504>] (panic+0x40/0x134)
>     [<c003f504>] (panic+0x40/0x134) from [<c0008f00>] (mount_block_root+0x1c4/0x20c)
>     [<c0008f00>] (mount_block_root+0x1c4/0x20c) from [<c00091b4>] (prepare_namespace+0x168/0x1cc)
>     [<c00091b4>] (prepare_namespace+0x168/0x1cc) from [<c0008748>] (kernel_init+0xd0/0x104)
>     [<c0008748>] (kernel_init+0xd0/0x104) from [<c0026d90>] (kernel_thread_exit+0x0/0x8)
>     
>     Has anyone encounter this problem before?
>     Anyway, i'm using a JFFS2 filesystem and 2.6.33 Kernel.
>     
>     I also notice when i restart the NFS server on my Host i got a warning something like, 
>     "exportfs: Warning: /home/raul/ltib/rootfs does not support NFS export."
>     I don't what this warning means, i just ignore it. I was thinking this might be the cause of the issue or maybe not...

"Server returned error -13" means -EACCES, or "Permission Denied".  Have you properly configured your NFS server (/etc/exports) to export your rootfs?  See:

http://forums.freescale.com/t5/68K-ColdFire-reg-Microprocessors/unable-to-boot-from-NFS/m-p/40555



>     Hope someone could help me with this issue... Thanks
>     
>     
>     regards,
>     
>     Casper
>      
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