Description of problem:

use qemu-img to create a disk with decimal in size number failed.

Version-Release number of selected component (if applicable):
kernel:
2.6.18-300.el5

kvm:
kvm-83-246.el5
kvm-qemu-img-83-246.el5

How reproducible:
100%

Steps to Reproduce:
1.install a host with above kernel and kvm version

2.in host run:
# qemu-img create -f qcow2 disk.qcow2 2.2G

3.
  
Actual results:

create disk failed.

Expected results:

create disk should be successfully.

Additional info:
1.create raw disk also have this problem.
2.not use decimal disk size without this problem.
eg
# qemu-img create -f qcow2 disk.qcow2 22G

3.in RHEL6.2 host no this problem.