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List:       cobbler
Subject:    Re: XCP Guests Unable to PXE Boot
From:       James Cammarata <jimi () sngx ! net>
Date:       2011-10-26 22:26:20
Message-ID: CAFgbs7f0HMGDw-b_Q41fDN+fdefb6S8BxszzeAqyZQwnBKWDsQ () mail ! gmail ! com
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On Wed, Oct 26, 2011 at 4:57 PM, James Cammarata <jimi@sngx.net> wrote:
> On Wed, Oct 26, 2011 at 3:50 PM, Russ Lavoy <ussray_00@yahoo.com> wrote:
> > Hello,
> > 
> > I am having an issue with XCP guests not being able to pxe boot. First I change \
> > the PV options (that is what is required to netboot with the VM, but when I do \
> > that it sees the MAC of the VM and starts to load the pxelinux.cfg/MAC-ADDR then \
> > tells me "Invalid or corrupt kernel image".  I did an md5sum on the vmlinuz and \
> > initrd.img files and they are all the exact same in the KS repo and in the \
> > /tftpboot location.  I can kickstart it with no issues, just not PXE. 
> > Is there any help on that one out there?
> 
> Xen and centos? If so, I've been seeing this a lot lately - you'd be
> the fourth person I've seen with the issue.
> 

The issue is that the kernel associated with the -xen distro is the
wrong one - it's the normal kernel and not the paravirtualized one.

Here's the 5.5 distros on my system:

# cobbler distro report --name=centos-5.5-xen-x86_64 | grep vmlinuz
Kernel                         :
/var/www/cobbler/ks_mirror/centos-5.5-x86_64/images/xen/vmlinuz

# cobbler distro report --name=centos-5.5-x86_64 | grep vmlinuz
Kernel                         :
/var/www/cobbler/ks_mirror/centos-5.5-x86_64/images/pxeboot/vmlinuz

The MD5 sum of those two vmlinuz files should NOT be the same. I'm not
sure if this is an import issue, or if it's something CentOS messed up
with 5.7 (every one who's reported this have been 5.7). You can fix it
by pointing the -xen distro at the correct vmlinuz in the ks_mirror
tree, just use 'cobbler distro edit' to fix it.
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