[CentOS] Error: when updating the latestt kernel 2.6.34 in centos 5.5

Tue Jun 1 03:52:38 UTC 2010
886886 backyes <backyes at gmail.com>

Hi,
I encounter a error when installing the latest kernel 2.6.34 in centos.
Steps:
1. download source code.
2.tar -xvf 2.6.34.tar.gz
3.use the .config file of current system in /boot directory.
4.make ,make modules_install, make install,
5.reboot.
6.error:: accur.
Reading all physical volumes. This may take a while ...
Activating logical volumes
  Volume group "VolGroup00" not found
Creating root device.
Mounting root filesystem.
mount: could not find filesystem"/dev/root"
setting up other filesystems.
...
After comparing the latest initrd.img and the current system initrd.img .
The differnce below:

the currenet system has more modules before excuting the LVM operations.
these modules is dm-mem-cache.ko ,  dm-message.ko  and dm-raid45.ko which
depends the others. I know the centos 5.5 ' s kernel is 2.6.18. which has
dm-raid45.ko module.
I do not know which  changes to 2.6.34 about LVM. I think the errro is about
the LVM.
Anyone can give me answer or advice. Thanks.



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