root file system mounted via NFS - retry?

Jarno Manninen jarno.manninen at
Wed Apr 12 22:40:41 EST 2006

On Wednesday 12 April 2006 15:35, Randy Smith wrote:


If your system configuration is static why not just sleep in the bootloader 
for a while? U-boot has sleep command.

- Jarno

> Hello,
> I have a general question regarding having a root file system mounted
> via NFS.  Our system consists of a linux PC that acts as the NFS server
> and two embedded ppc boards running linux that mount their file systems
> via NFS.  The problem is that the embedded boards boot much faster than
> the PC, and when they attempt to mount the root file system, the NFS
> server is not up yet.  The embedded boards hang and it takes quite a
> long time before the watchdog timer reboots them.  The next time round,
> they come up just fine.
> What I would like for them to do is keep trying until the NFS server
> appears and then continue to boot.
> We are running DENX's ELDK 2.4.25 kernel on the ppc boards and I know
> that for some linux releases, one may add values for timeo and retrans
> on the boot command line in the NFSROOT= command.  Can anyone tell me if
> they are valid for this release of the kernel?  Or if there is another
> way to accomplish this?
> Thanks,
> -Randy Smith
> Software Engineer
> ImageMap, Inc.
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> Linuxppc-embedded at

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