MariaDB [(none)]> SELECT table_schema "database", sum(data_length + index_length)/1024/1024 "size in MB" FROM information_schema.TABLES GROUP BY table_schema;
+--------------------+--------------+
| database | size in MB |
+--------------------+--------------+
| cinder | 4.15625000 |
| glance | 1.95312500 |
| heat | 12.65625000 |
| information_schema | 0.07812500 |
| keystone | 1.50000000 |
| manila | 1.03125000 |
| mysql | 1.11438084 |
| neutron | 14.59375000 |
| nova | 223.50000000 |
| nova_api | 5.07812500 |
| performance_schema | 0.00000000 |
+--------------------+--------------+
11 rows in set (0.14 sec)
