Description of problem:

I am working with gluster configured as cinder backend.
if I try to clone a volume from image when the new volume size is smaller than the image we get the following error:

[root@cougar06 ~(keystone_admin)]# cinder create 10 --image-id 0924d3a4-d163-4ae5-8f57-fb9f1912ee26 --display-name dafna_new

ERROR: Invalid input received: Image minDisk size 20 is larger than the volume size 10.

if I try to clone a volume from a volume when the new volume is smaller than the volume we clone from we get the following error:

[root@cougar06 ~(keystone_admin)]# cinder create 10 --source-volid c3b6cb41-d78d-420d-b64c-d5f3782f7772 --display-name new_clone

ERROR: Invalid input received: Clones currently disallowed when 10 < 20. They must be >= original volume size.

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

openstack-cinder-2013.2-0.11.rc1.el6ost.noarch
python-cinder-2013.2-0.11.rc1.el6ost.noarch
python-cinderclient-1.0.6-1.el6ost.noarch

How reproducible:

100%

Steps to Reproduce:
1. create an image and a volume 
2. clone a volume from the image but give new volume size smaller than the image 
3. clone a volume from the volume but give a new volume size smaller than the src volume. 

Actual results:

we get different error messages 

Expected results:

we should get the same error messages 

Additional info: