[Beowulf] Intel motherboard BMC

[Peter Kjellström]

On Thu, 21 Jun 2018 10:13:32 +0100
Jörg Saßmannshausen <sassy-work at sassy.formativ.net> wrote:

...
> I got a second issue with these boards. I usually do the normal
> PXE/NFS boot and the setup is working well for the other, older
> Supermicro machines. However, with the new Intel ones, this is
> crashing.

We have a working pxe (ipxe) setup with this motherboard and vanilla
centos-7.4. Shall we start comparing details off-list?

/Peter K

> The procedure is you are selecting in the boot-menu you
> want to do a PXE boot and not boot from the local hard drive. 
> It then boots the initramfs which seems to be fine. From what I can
> see, both during the boot process and from the log files of the
> DHCP-server, it is getting the right IP address. 
> However, when the initramfs hands over to the kernel, it crashes with:
> kernel panic! attempt to kill init
> and you literally have to pull the plug on the machine, i.e. a hard
> reset.
> 
> The only time I have seen that was when I did not specify the NIC and
> when I had two NICs, it somehow decided to use the other one. I fixed
> that problem by defining the interface in the boot-arguments and also
> the second NIC is not connected anyway. It also has a InfiniBand card
> which does allow booting from it. Again, it is not connected so in
> theory it should not matter. 
> 
> I am stuck here. I am using a 4.x kernel for the PXE boot, so a
> fairly recent one. As I said, it works for the older machines but not
> for the newer ones. 
> 
>  I upgraded the whole PXE/NFS boot and that is not working too.
> 
> Does anybody have any ideas here?
> 
> Sorry for asking 2 questions in one email but as they are related I
> hope that is ok.
> 
> All the best from a sunny London
> 
> Jörg
> 
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