Re: [Xen-users] Xen 3.1.0 initrd and kernel building

[amin <amin@xxxxxxx>]

So back to the root... finally got it running with modules compiled in 
kernel.
> > built a xen from source (tgz) and make dist ... then made initrd with
> > mkinitrd and modules=all in the
> > mkinitrd.conf -> initrd.img was 14mb and set it up in the grub with
> > module /initrd....
> >
> > on boot it loads the initrd like:
> > Loading ramdisk into ram .... done
> >
> > but then NO MODULES in the initrd are being loaded by the kernel, though
> > initrd support is in the kernel,
> > and the kernel states kernel panic (because no sata or raid modules are
> > being loaded).
> >     
> Whoa, that's a big initrd.  Is Linux successfully mounting the initrd itself?  
> I remember there being something like a 4Meg limit on initrd size (by 
> default).
> Why build with modules=all?  Doesn't dep do what you want?
>
>   
Didn't know which modules should be there so i took all to test...
But the thing is , when you do it like its described at the README,
it loads the initrd , but doesn't start loading the modules like sd_mod etc.

with all modules compiled in kernel it work.
why isn't stated mkinitramfs in the README ?

now have a compiled kernel and couldn't test it anymore...
anybody else had the problems or am i the only one with that ?

(reinstalled the whole machine twice, but never got a running initrd)
loads... but doesn't start modules...

> > Second:
> > Built a kernel with sata support and everything and make 2.6-xen-build
> > and 2.6-xen-install --->
> > Dom0 differs from xen on boot ...
> > saved a .config from the kernel , make mrproper, make dist, put .config
> > in kernel path, make dist again...
> > -> xen stated failure in kernel package and asked me to run make
> > mrproper...
> >     
> Sounds like you ended up building a XenLinux that used a different memory mode 
> to Xen itself.  Xen builds with PAE enabled so that it can support large 
> memory hosts (> 4gig), but you need XenLinux to support PAE too if it's going 
> to work.  I'm guessing you created this config from scratch, since the 
> default Xen build process will match PAE-ness.
> Since your config must have had PAE disabled, copying the .config back to the 
> kernel tree will have replicated the same problem :-(  Do make menuconfig / 
> xconfig and go to Processor Type and Features.  Then in the "High Memory 
> Support" section choose 64GB.  This will enable PAE.  Rebuild the kernel, 
> (and modules, and initrd) then try that.  It should boot...
>   
Yes , there could be a nice hint on that like no 64gb support stopping...
but no, make mrproper to solve that... :D

> > so is this called stable or what ?
> >     
> It should run reasonably stably, once you get it running ;-)
>
> Cheers,
> Mark
>
>   
Thanks for all the answers, now i got a fresh xen 3.1.0 ;)
Greetz,
Amin


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