On 02/24/2014 07:42 AM, Vikas Kokare wrote: The basic information is available in the disk resource: /api/disks/{disk:id} /api/vms/{vm:id}/disks/{disk:id} There you will find three values: <size>...</size> <provisioned_size>...</provisioned_size> <actual_size>...</actual_size> I think that the <actual_size> is what you are looking for. For a particular storage domain you can also see some aggregated information, in tue /api/storagedomains/{storagedomain:id} resource: <available>...</available> <used>...</used> <committed>...</committed> -- Dirección Comercial: C/Jose Bardasano Baos, 9, Edif. Gorbea 3, planta 3ºD, 28016 Madrid, Spain Inscrita en el Reg. Mercantil de Madrid – C.I.F. B82657941 - Red Hat S.L.