I try to start the VM but it's failed to start...and through the following error :- 

 VM vm1 is down with error. Exit message: Bad volume specification {'index': 0, 'iface': 'virtio', 'type': 'disk', 'format': 'raw', 'bootOrder': '1', 'address': {'slot': '0x07', 'bus': '0x00', 'domain': '0x0000', 'type': 'pci', 'function': '0x0'}, 'volumeID': '60c73bf0-d190-420b-917c-04aa00e52f10', 'apparentsize': '1073741824', 'imageID': '8ca66096-bd47-460d-9e09-2966e45b471b', 'specParams': {}, 'readonly': 'false', 'domainID': 'e732a82f-bae9-4368-8b98-dedc1c3814de', 'reqsize': '0', 'deviceId': '8ca66096-bd47-460d-9e09-2966e45b471b', 'truesize': '1054048256', 'poolID': '00000002-0002-0002-0002-000000000145', 'device': 'disk', 'shared': 'false', 'propagateErrors': 'off', 'optional': 'false'}.

Please help me to solve this issue....

Thanks,

Punit