Description of problem:

This one needs a bit of specific numerology to reproduce. 
I noticed it in one of my VMs by chance.

Basically:
* Pre-configured PV of 563G (I'm using LSO)
* VM disk PVC of 500G binds to the PV above

Result: the UI shows the disk as 512KiB.

If I move things around (i.e. change some of the sizes, the problem goes away).

Version-Release number of selected component (if applicable):
4.12.2

How reproducible:
Always

Steps to Reproduce:
1. Using LSO, create a 563G partition (I have some of 100 and 200G which do not reproduce)

$ sudo fdisk -l /dev/sda | grep -E 'Device|sda14 '
Device          Start        End    Sectors  Size Type
/dev/sda14 2726299648 3907029134 1180729487  563G Linux filesystem

2. Let LSO create the PV for it

NAME                CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS      CLAIM   STORAGECLASS   REASON   AGE
local-pv-6079dbae   563Gi      RWO            Delete           Available           local-ssd               27m

3. Create a VM disk in such a way that it will bind to the PV above. But request only 500G

NAME                            STATUS    VOLUME              CAPACITY   ACCESS MODES   STORAGECLASS   AGE
fedora-disk-bad-swift           Bound     local-pv-6079dbae   563Gi      RWO            local-ssd      30m

4. Navigate to the console, Virtual Machines -> VM -> Disks. See the size it reports.

See the screenshot attached for the exact case above.

Actual results:
512K

Expected results:
563G

Additional info:
* Only happens with very specific values