initramfs-tools does not add dm-mod.ko to initrd for kernels 2.6.30-2-686 and kernels 2.6.30-2-686-bigmem

[Mitchell Laks <mlaks@post.harvard.edu>]

Hi,

I just upgraded my lvm based system 
to the latest debian kernels and it will not boot from grub with the 2.6.30 kernels
which cannot find the /dev/mapper/debian-root partition on /dev/sda2 because the dm-mod and other dm kernel
modules are not in the initrd-2.6.30-2-bigmem archive. Of course they are in my older initrd-2.6.26-2-686  from the 2.26 kernels.

This is standard debian isntall- I follow the choices in the debian-installer and get root on lvm physical device /dev/sda2 with a separate /boot on /dev/sda1,

How can I work around this and what to do? My old kernel 2.6.26 works fine.... How to force initrd to load the dm-mod and other device-mapper kernel modules?

Mitchell