Re: [NUMA x86_64] problem accessing global Node List pgdat_list

[Eric Dumazet <dada1@cosmosbay.com>]

devesh sharma a écrit :
> Hi Eric,
> I have tried numa=fake=4 on intel xeon with 2.6.13 kernel it is
> working fine and by adding EXPORT_SYMBOL(pgdat_list)  in
> mm/page_alloc.c now I am able to access pgdat_list also. But on
> opteron machine there is some problem in kernel compilation
> at make install stage I am getting following warning
> 
> WARNING: No module mptbase found for kernel 2.6.13, continuing anyway
> WARNING: No module mptscsih found for kernel 2.6.13, continuing anyway
> 
> now when I boot my kernel, panic is received
> 
> Booting the kernel.
> Red Hat nash version 4.1.18 starting
> mkrootdev: lable / not found
> mount: error 2 mounting ext3
> mount: error 2 mounting none
> switchroot: mount failed : 22
> umount : /initrd/dev failed : 22
> kernel panic - not syncing : Attempted to kill init
> 
> On the other hand when I complie same source code on XEON machine this
> works fine.
> 
> what could be the problem?

Hi Devesh

I believe you have basic kernel compilation problem :)

Your kernel cannot mount / because the boot loader was configured to find a 
root=LABEL=/
As this is a RedHat kernel extension, your self compiled 2.6.13 kernel cannot 
understand this.
You should change your lilo/grub config to match your root device as 
root=/dev/hda2  (if hda2 is your root device)

Also check that your kernel (or initrd) contains the disk driver you need.

Eric