Created attachment 1242714 [details]
screenshot-2

Description of problem:
virt-manager cannot show correct size and format for qcow2 image which not managed by dir-pool

Version-Release number of selected component (if applicable):
virt-manager-0.9.0-34.el6.x86_64
libvirt-0.10.2-62.el6.x86_64
qemu-kvm-rhev-0.12.1.2-2.501.el6.x86_64

How reproducible:
100%

Steps to Reproduce:
1. Make sure there is no dir pool using path:  /var/test1/

2. Create a new qcow2 image under path: /var/test1/
# qemu-img create -f qcow2 /var/test1/testjuzhou.img +6G
Formatting '/var/test1/testjuzhou.img', fmt=qcow2 size=6442450944 encryption=off cluster_size=65536 

# qemu-img info /var/test1/testjuzhou.img 
image: /var/test1/testjuzhou.img
file format: qcow2
virtual size: 6.0G (6442450944 bytes)
disk size: 196K
cluster_size: 65536

3. Then launch virt-manager to install a guest on this existing qcow2 image.
# virt-manager
In "step 4 of 5", choose "Select managed or other existing storage", input "/var/test1/testjuzhou.img", then click "Forward".

In "step 5 of 5" page, it shows: Storage: 0.0 GB  /var/test1/testjuzhou.img->screenshot-1
Tick "Customize configuration before install" and click "Finish".
In last page check disk information->screenshot-2.
Storage size: 0.19M
Storage format: raw

And after installation starting, it will also failed at disk partitioning page.


Actual results:
As above.

Expected results:
Show qcow2 disk size correctly.

Additional info:
After i create a new dir pool using path "/var/test1/", then do above step again, virt-manager will show disk size and format correctly.