[CentOS] centos 5.0/5.1 nfs kickstart

[Paul Armor]

Hi,

On Tue, 29 Jan 2008, Adam Miller wrote:

> According to these docs an MTU can be specified in the kickstart script. It 
> doesn't say much more than that though.
>
> http://www.centos.org/docs/5/html/Installation_Guide-en-US/s1-kickstart2-options.html
>
> The reason for nfs and an mtu of 4500 is complicated and not in my control. 
> This is being used in a beowulf cluster environment.
>
> The process I'm following is currently working for kickstarting Fedora Core 4 
> installs, so I am hopeful it will work in centos.
>
> Adam

Getting this thread back on track...

The problem seems to be that when syslinux hands over control to the 
anaconda image, anaconda (specifically /sbin/loader) blows away the mtu... 
I'm guessing that it actually does set the mtu, then resets the interface 
(in our case, a broacom 5704 using tg3) and thus instantly forgets the mtu 
change.

If in the syslinux kernel args I pass a static ip/netmask/mtu to the 
kernel, it works appropriately.

Oddly, when starting the kickstart, after the ks.cfg file it will
dhcp AND it seems remember the mtu setting.

Thanks,
Paul