Snapshot Size Not Counted in Primary Storage Quota & Volumes Metrics Incorrect – ACS 4.20.0 (KVM + Ceph Reef)

### problem

**Issue 1:**
Volume snapshots for clients are configured to be stored in Primary Storage. However, in the account’s Primary Storage quota, snapshot sizes are not reflected — only the volume size is counted toward the Primary Storage usage.

**Issue 2:**
The Primary Storage is configured with thin provisioning, but in ACS the created volumes show the same values for *Volume Utilization* and *Physical Size* but the actual used size is not showing.

**Issue 3:**
For volume snapshots, only the *virtual size* is displayed; the *physical size* is not shown.

We are currently using KVM (Ubuntu) hypervisors with Ceph as the Primary Storage. Is there any additional configuration required to address these issues.

### versions

Apache CloudStack: 4.20.0

Primary Storage: Ceph Reef

Hypervisors: KVM (Ubuntu)

Comienza reproduciendo los tres comportamientos reportados en Apache CloudStack 4.20.0 con KVM en Ubuntu y Ceph Reef, comparando el uso de la cuota del almacenamiento primario con las métricas de volúmenes y snapshots. Se considera terminado cuando se determine si se necesitan cambios de configuración o de implementación para que los tamaños de los snapshots afecten al uso de la cuota y el uso físico se muestre correctamente para los volúmenes y los snapshots.

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