Description of problem:

After configuring a test run which specifies 2 data partitions to be ext3 (/usr/local and /mnt/testarea) 
- \ | / - \ | / - \ | / - \ | /  
Elapsed time since release of system processors: 668275 mins 4 secs 
 
System has 128 Mbytes in RMA 
/vdevice/v-scsi@30000002/disk@8100000000000000:-1,/etc/yaboot.conf: Unknown or corrupt filesystem 
Can't open config file 
Welcome to yaboot version 1.3.14 (Red Hat 1.3.14-35.el6_0.1) 
Enter "help" to get some basic usage information 


Version-Release number of selected component (if applicable):
0923.3 tree

How reproducible:
very frequent if not always, have seen on power6 and power 7 hardware

Steps to Reproduce:
1.Install a ppc from Beaker using ext3 for /mnt/testarea and /usr/local (doubt that actual mount points matter that much, I'm leaving /boot and other system partitions alone.
2. Installation seems to complete normally, then boot fails
3.
  
Actual results:
http://beaker-archive.app.eng.bos.redhat.com/beaker-logs/2011/09/1364/136469/282652//console.log

Expected results:
installation boots

Additional info:

the kickstart and other job info:
https://beaker.engineering.redhat.com/jobs/136958
http://lab.rhts.englab.brq.redhat.com/beaker/logs/recipes/283434//ks.cfg