Description of problem:
create 2300G image, install os with qemu-kvm

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

anaconda-11.1.2.239-1

How reproducible:
100%

Steps to Reproduce:
1. qemu-kvm create -f qcow2 /home/images/RHEL-Server-5.7-32-virtio.qcow2 2300G

2. cmd
qemu-kvm -drive
file='/home/images/RHEL-Server-5.7-32-virtio.qcow2',index=0,if=none,id=drive-virtio-disk1,media=disk,cache=none,format=qcow2,aio=native
-device
virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk1,id=virtio-disk1
-device
virtio-net-pci,netdev=idbggPsm,mac=9a:96:70:e1:96:b7,id=ndev00idbggPsm,bus=pci.0,addr=0x3
-netdev
tap,id=idbggPsm,vhost=on,script='/home/qemu-ifup-switch',downscript='no' -m
2048 -smp 4,cores=1,threads=1,sockets=4 -drive
file='/home/RHEL-Server-5.7-i386-DVD.iso',index=1,if=none,id=drive-ide0-0-0,media=cdrom,readonly=on,format=raw
-device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -drive
file='/home/Auto/images/rhel57-32/ks.iso',index=2,if=none,id=drive-ide0-0-1,media=cdrom,readonly=on,format=raw
-device ide-drive,bus=ide.0,unit=1,drive=drive-ide0-0-1,id=ide0-0-1 -cpu
cpu64-rhel6,+sse2,+x2apic -kernel '/home/images/rhel57-32/vmlinuz' -initrd
'/home/Auto/rhel57-32/initrd.img' -vnc :0 -rtc
base=utc,clock=host,driftfix=none -M rhel6.1.0 -boot order=cdn,once=n,menu=off 
 -usbdevice tablet -no-kvm-pit-reinjection --append 'ks=cdrom nicdelay=60
console=ttyS0,115200 console=tty0' -enable-kvm

3.
  
Actual results:

fail to install guest because of not enough space

Expected results:


Additional info: