Viewing Per-Tenant Block Storage Usage in OpenStack

$ pip3 install openstacksdk

$ source admin.rc

import openstack

conn = openstack.connect()

# Build a map of project_id -> project name

project_names = {p.id: p.name for p in conn.identity.projects()}

usage = {}

# Collect provisioned volume sizes

for vol in conn.block_storage.volumes(details=True, all_projects=True):

    pid = vol.project_id

    usage[pid] = usage.get(pid, 0) + vol.size  # size in GB

# Print output

print(f"{'Project':<20} {'Provisioned (GB)':>16}")

for pid, size in sorted(usage.items()):

    name = project_names.get(pid, pid[:8])  # fallback to short ID

    print(f"{name:<20} {size:>16}")

$ python3 volume_usage_by_project.py

$ python3 volume_usage_by_project.py

Project              Provisioned (GB)

admin                           320

services                        150

demo                            200