Re: [SSI-users] boot log for the node: how? where?

[John B. <joh...@hp...>]

Larry Brown wrote:
> Hello,
> 	I'm a newbie to the list / clustering and would like to ask a question
> about this thread.  Don't you have to have a kernel that will run across
> these architectures?  ( VIA Eden / Pentium 4 )  I have a Pentium 4 based
> system that would not run on the kernel that I had been using for VIA. 
> The kernel he is using could be the one built based on i686 and hence
> the VIA boards won't boot?  If these statements are true, is there even
> a way to mix these chips up in a / this cluster?
> 
> Larry

We made a decision to only provide the SMP kernel, which works on most 
UP systems. However, there is a small minority of CPUs (of which I know 
the Pentium 4M does not, there may be others.) that won't work with this 
kernel. (It has something to do with the 64G high memory support being 
enabled, I believe.)

A user of these CPUs can download the source and build the kernel with 
the provided i686 UP config file which has solved any booting problems 
in the past.

You can mix up kernels and initrds across a cluster, but you have to do 
the configuration by hand. At the momement, it is painful.

John Byrne


> 
> On Mon, 2005-03-14 at 06:42, Peter Nimda wrote:
> 
>>>>One node stops very early, i.e. right after words "Decompressing
>>>>kernel" (or so).
>>>
>>>Is this node UP or SMP? Does this node have a Pentium 4M processor?
>>
>>U.P.  
>>It is VIA EPIA motherboard with Pentium-like processor, which was tested by me
>>with Knoppix 3.7 and Gentoo -- both with kern 2.6.x. The exact kernel versions 
>>of those checked Linux distributions I can't reproduce now though.
>>
>>
>>
>>>>Another node boots much further (several screens of output), but I
>>>>think it hangs up before the node is joined.
>>>
>>>What are the last few messages on the screen?
>>
>>Another one was Pentium IV. 
>>Last message on the screen is not always the same thefore
>>I wanted to know how to get logging in more details to understand
>>what really is going on and where.
>>
>>
>>
>>>As far as I know, you are seeing the kernel boot as chatty as it gets.
>>>You can try to add the "debug" option to the kernel arguments in
>>>/tftpboot/pxelinux.cfg/default if you are using PXE or you need to edit
>>>/sbin/ssi-ksync-network to add it if you are using Etherboot.
>>
>>(PXE)
>>
>>I tried different kernel options via /tftpboot/pxelinux.cfg/default already, 
>>but not "debug" yet. Thank you for advice.
>>
>>/P.
>>
>>
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> 
> 
>