[CentOS] kmod-kvm for custom CentOS 5.5 kernel

Ken Dechick kend at medent.com
Fri Oct 8 17:35:41 EDT 2010


Hello all!

   I have actual need to build a custom kernel.(Have to change Preemption
model to 'server' and turn off Preempt the big kernel lock, ect) I have heard
bits and pieces about these changing defaults in newer kernels but I haven't
investigated that yet.

This of course is not a problem at all, made my needed changes to the source
code and successfully build both the standard and the Xen kernel using the
rpmbuild guide from this site found here:   
http://wiki.centos.org/HowTos/Custom_Kernel

Built:
 kernel-2.6.18-194.11.4.el5.1.x64.x86_64
 kernel-xen-2.6.18-194.11.4.el5.1.x64.x86_64

The standard kernel works well, I haven''t messed around much with Xen yet (I
get an "Error 13: Invalid or unsupported executable format") if I try to boot
to the xen kernel - I have Xen installed correctly I believe:

[kend at test225: ~]# rpm -qa | grep xen
xen-3.0.3-105.el5_5.5.x86_64
kernel-xen-devel-2.6.18-194.11.4.el5.1.x64.x86_64
xen-libs-3.0.3-105.el5_5.5.x86_64
xen-devel-3.0.3-105.el5_5.5.x86_64
kernel-xen-devel-2.6.18-194.11.4.el5.x86_64
xenwatch-0.5.3-3.el5.x86_64
kernel-xen-devel-2.6.18-8.el5.x86_64
kernel-xen-2.6.18-194.11.4.el5.x86_64
kernel-xen-2.6.18-194.11.4.el5.1.x64.x86_64


But I need to nail down this KVM issue as I would rather use full hardware for
my virtualization. Problem I have is that I cannot find a source rpm package
for kmod-kvm that will work with my kernel. There are instructions on the KVM
site on how to build external module for older kernels, and I tried that, but
to make a long story short, mt 2.6.18-194 kernel has no available source rpms
that I can use for my custom kernel. 

Can anyone point me to a source package for kmod-kvm that will work with my
2.6.18-194.11.4.el5 kernel base?? I have spent 2 full days digging through
packages on the web and I cannot come up with anything.
Thinking of just going with trying out Xen instead, but of course I have an dd
issue there too.

Any help with either of these issues would be very much appreciated!

Sorry for the long post

Kenneth M DeChick
Linux Systems Administrator
Community Computer Service, Inc.
http://www.medent.com
kend at medent.com
Registered Linux User #497318
-- -- -- -- -- -- -- -- -- -- --
Schshschshchsch.-- The Gorn, "Arena", stardate 3046.2

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