[U-Boot-Users] NFS TFTP problem

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[U-Boot-Users] [UPDATED] [PATCH...

cjjoy1980

6 Aug 2008 6 Aug '08

4:24 a.m.

I have enabled nfs booting on ppc based embedded board. I had placed my kernel and rootfs in tftp directory, and had set the u-boot enivironment varialbes as: setenv bootfile /image/kernel setenv root_path /tftpboot/image

The board was booting with this configuration...

Now I have placed the kernel image and rootfs in /exports directory and have set the uboot variables as: setenv bootfile /exports/image/kernel setenv root_path /exports/image

I am not able to boot the board with the above directory. I am getting the error

Loading: T TFTP error: 'File not found' (1) Starting again.

TFTP by default looks for /tftpboot directory.. How can we make the server to fetch files apart from the default one??

-- View this message in context: http://www.nabble.com/NFS-TFTP-problem-tp18843233p18843233.html Sent from the Uboot - Users mailing list archive at Nabble.com.

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Ben Warren

6 Aug 6 Aug

6:22 a.m.

New subject: [U-Boot-Users] NFS TFTP problem

On Tue, Aug 5, 2008 at 7:24 PM, cjjoy1980 cjjoy1980@gmail.com wrote:

...

I have enabled nfs booting on ppc based embedded board. I had placed my kernel and rootfs in tftp directory, and had set the u-boot enivironment varialbes as: setenv bootfile /image/kernel setenv root_path /tftpboot/image

The board was booting with this configuration...

Now I have placed the kernel image and rootfs in /exports directory and have set the uboot variables as: setenv bootfile /exports/image/kernel setenv root_path /exports/image

I am not able to boot the board with the above directory. I am getting the error
  Loading: T
  TFTP error: 'File not found' (1)
  Starting again.
TFTP by default looks for /tftpboot directory.. How can we make the server to fetch files apart from the default one??

Your question is completely off-topic and you should put more effort into figuring out simple problems like this before asking for help. That said... Here are three options: 1. Put the files back in /tftpboot 2. Figure out how to configure your TFTP server. They're usually quite flexible 3. $ ln -s /exports/image /tftpboot/image

regards, Ben

Hebbar

8:33 a.m.

New subject: [U-Boot-Users] NFS TFTP problem

Hi,

TFTP Server running on your system needs to be configured when you change the directory.

If you have installed xinetd, the configuration files are stored in /etc/xinetd.d/ folder

edit /etc/xinetd.d/tftp & change the server_args to pint to new directory

[root @linux]# vi /etc/xinetd.d/tftp # # File /etc/xinetd.d/tftp # service tftp { protocol = udp socket_type = dgram wait = yes user = root server = /usr/sbin/in.tftpd server_args = -s /tftpboot disable = no }

Hope this helps

Regards Gururaja

-- View this message in context: http://www.nabble.com/NFS-TFTP-problem-tp18843233p18845192.html Sent from the Uboot - Users mailing list archive at Nabble.com.

Jerry Van Baren

1:31 p.m.

New subject: [U-Boot-Users] NFS TFTP problem

cjjoy1980 wrote:

...

I have enabled nfs booting on ppc based embedded board. I had placed my kernel and rootfs in tftp directory, and had set the u-boot enivironment varialbes as: setenv bootfile /image/kernel setenv root_path /tftpboot/image

The board was booting with this configuration...

Now I have placed the kernel image and rootfs in /exports directory and have set the uboot variables as: setenv bootfile /exports/image/kernel setenv root_path /exports/image

I am not able to boot the board with the above directory. I am getting the error
   Loading: T 
   TFTP error: 'File not found' (1) 
   Starting again. 
TFTP by default looks for /tftpboot directory.. How can we make the server to fetch files apart from the default one??

You cannot make the TFTP server fetch files apart from the default one. Furthermore, you don't want to.

TFTP inherently has *NO* concept of security: no authentication - *anybody* can read *any* file in the TFTP directory and potentially can write any file they want into the TFTP directory.

As a result, TFTP servers are (and should be) severely restrictive of what directories they serve files out of and are willing to store files into (if configured to allow writing - generally a bad idea).

You can configure your TFTP server to serve the same directory as you export via NFS and your TFTP load will start working again. ****THIS IS A VERY, VERY BAD IDEA!****

As pointed out by Ben, you can symlink your image file so that it appears in your TFTP directory again - this is the best solution if you *must* move your image into the NFS directory. You need to decide if you have a good reason to move your image *out* of your TFTP directory.

Best regards, gvb

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Ben Warren
cjjoy1980
Hebbar
Jerry Van Baren