Description of problem (please be detailed as possible and provide log
snippests):
When using 'Add Capacity' UI it could be nice if we can provide more information about used capacity / provisioned capacity and percentage occupied.
Considering RBD and CephFS are using thin provisioning, we could advise total capacity provisioned for PVs despite percentage occupied is much less thanks to thin provisioning. Just to check the level of over-provisioning user is committing.

Version of all relevant components (if applicable):
OCS 4.2

Does this issue impact your ability to continue to work with the product
(please explain in detail what is the user impact)?
No, just more insights for user

Is there any workaround available to the best of your knowledge?


Rate from 1 - 5 the complexity of the scenario you performed that caused this
bug (1 - very simple, 5 - very complex)?
1

Can this issue reproducible?
Yes

Can this issue reproduce from the UI?
Yes

If this is a regression, please provide more details to justify this:


Steps to Reproduce:
1. Use "Add Capacity" dialog in the OpenShift UI
2.
3.


Actual results:
Used Capacity is the only information displayed

Expected results:
Used NET Capacity, Total RAW capacity, Total NET Capacity (dividing by replica 3), % occupation, Total NET provisioned in PVs 


Additional info:
Important in all disk capacity measures to specify if it's RAW or NET