booting from LVM2 in 2.6.10

[Ganga Varatharajan]

I downloaded and compiled the 2.6.10 source, including some DVB drivers.

My boot parition is an LVM2 partition, /dev/mapper/VolGroup00-LogVol00.

I am able to reboot from this parition under the 2.6.10-1.766FC3 kernel and 
the 2.6.9-1.667FC3 kernels. But under my 2.6.10 kernel (2.6.10-mythtv) I get 
errors with the device mapper finding any logical paritions in the LVM 
parition.

grub.conf reads:

default=0
timeout=5
splashimage=(hd1,1)/grub/splash.xpm.gz
hiddenmenu
title Windows XP
        rootnoverify (hd0,0)
        chainloader +1
title Fedora Core (2.6.10-mythtv)
        root (hd1,1)
        kernel /vmlinuz-2.6.10-mythtv ro root=/dev/VolGroup00/LogVol00 rhgb 
quiet
        initrd /initrd-2.6.10-mythtv.img
title Fedora Core (2.6.10-1.766_FC3)
        root (hd1,1)
        kernel /vmlinuz-2.6.10-1.766_FC3 ro root=/dev/VolGroup00/LogVol00 
rhgb quiet
        initrd /initrd-2.6.10-1.766_FC3.img
title Fedora Core (2.6.9-1.667)
        root (hd1,1)
        kernel /vmlinuz-2.6.9-1.667 ro root=/dev/VolGroup00/LogVol00 rhgb 
quiet
        initrd /initrd-2.6.9-1.667.img


Do I need to build my initrd*.img with LVM2 support? I thought it is already 
provided in mkinitrd-4.1.18-2.

Any clues would be appreciated. Thanks,