Re: Disable window scaling during kickstart

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On Thu, May 10, 2007 at 06:34:54PM +0100, Plant, Dean wrote:
> Hello List,
> 
> Due to a problem with CentOS 5 and one of our firewalls I am having to
> disable tcp window scaling to stop network connections grinding to a
> halt. I am also trying to Kickstart CentOS 5 machines through the
> firewall so need to disable window scaling at install time.
> 
> I have added to the kickstart file
> 
> %pre
> echo 0 > /proc/sys/net/ipv4/tcp_window_scaling
> 
> But the install still hangs while transferring the stage2.img
> 
> Should the above %pre work or do I need to do something else to disable
> window scaling during the install.
> 
> In case anyone's interested CentOS 5 is the first time we have suffered
> this problem both CentOS 3&4 worked without issue.

Weird issue.  Haven't seen anyone else have it (at least on this list).

Can you switch over to your shell console when the hang happens and
examine the value of tcp_window_scaling to see if maybe it gets reset
somehow?  I believe %pre should work....

Ray
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