Description of problem:
on rhel5.7,we don't support create T virtue size img

If I want to create 2T value virtue size qcow2 img.I have to 

#qemu-img create -f qcow2 test.qcow2 2028G
Formatting 'test.qcow2', fmt=qcow2, size=2126512128 kB

#qemu-img info test.qcow2
image: test.qcow2
file format: qcow2
virtual size: 2.0T (2177548419072 bytes)
disk size: 172K
cluster_size: 65536

 

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


How reproducible:
100%

Steps to Reproduce:
1.qemu-img create -f qcow2 test.qcow2 2T

2.
3.
  
Actual results:
can't create.

Expected results:
should be support create T virtue size image

Additional info:
On rhel6.1,we support
#qemu-img create -f qcow2 test.qcow2 3T
Formatting 'test.qcow2', fmt=qcow2 size=3298534883328 encryption=off cluster_size=0 
# qemu-img info test.qcow2
image: test.qcow2
file format: qcow2
virtual size: 3.0T (3298534883328 bytes)
disk size: 180K
cluster_size: 65536