Description of problem:
We are running some rhts tests and on js20 blade, we observe that sometimes when
70.EL kernel boots, it does not recognize the LVM configuration and simply says
no logical volumes found and booting fails.

Version-Release number of selected component (if applicable):

70.EL

How reproducible:

Observed once in 20 times

Steps to Reproduce:
1. Install a machine with RHEL4U6
2. Install a RHEL4U7 (70.EL) and boot into 70.EL (You might see problem here)
3. Put machine into a reboot loop (You might see problem here)
  
Actual results:
System hangs.

Expected results:

System should boot.

Additional info:

In rhts I am seeing the problem second time.
Jeff burke reproduced the problem on specific js20 blade with in 20 attempts.
RHEL4U6 did not see the problem even in a reboot loop.

Here are the failure logs.

http://rhts.redhat.com/cgi-bin/rhts/test_log.cgi?id=3013816