When installing via kickstart on a Cisco UCS boot from SAN system (multipathed) the error "This most likely means this partition has not been formatted" occurs after the disk partitioning section runs in Anaconda

Issue

Using a basic partitioning section in a kickstart of RHEL 5, on a Cisco UCS boot from SAN multipathed LUN the error "This most likely means this partition has not been formatted" occurs. Below is a snippet of the partitioning section of the kickstart:

#System bootloader configuration
bootloader --location=mbr

#Clear the Master Boot Record
zerombr yes
clearpart --all

# Disk partitioning information
part /boot --fstype=ext3 --size=500
part pv.part --grow --size=1
volgroup vg --pesize=32768 pv.sys
logvol / --fstype=ext4 --name=lvroot --vgname=vg --size=12288
logvol /home --fstype=ext4 --name=lvhome --vgname=vg --size=4096
logvol /opt --fstype=ext4 --name=lvopt --vgname=vg --size=4096
logvol swap --name=lvswap --vgname=vg --size=20480
logvol /var --fstype=ext4 --name=lvvar --vgname=vg --size=4096