Comment 4 for bug 1494384

There are other steps to reproduce and the same result but for image storage disk spaces.

Scenario:
1. Create new environment
2. Choose Neutron, TUN
3. Choose Ceph for volumes
4. Choose Sahara
5. Choose Ceilometer
6. Add 2 controller+ceph
7. Add 1 controller
8. Add 1 compute
9. Add 3 mongo
10. Change disk configuration for all Mongo nodes. Change 'MongoDB' volume for vdc
11 Deploy env

Expected result: Deployment should be successfully

Actual result:
Deployment failed with following message:
Node 'Untitled (e6:a3)' has insufficient disk space
Volume group 'Image Storage' requires a minimum of 5120MB
It is about nodes from step 6
Only 1804 Mb was allocated for Image Storage.

If it is needed to create new bug report, tell me. I think the reasons of this issue are the same.