Analyse the line of volumes of ``drbdadm status``

def _add_volume(line):
    '''
    Analyse the line of volumes of ``drbdadm status``
    '''
    section = _analyse_status_type(line)
    fields = line.strip().split()

    volume = {}
    for field in fields:
        volume[field.split(':')[0]] = field.split(':')[1]

    if section == 'LOCALDISK':
        resource['local volumes'].append(volume)
    else:
        # 'PEERDISK'
        lastpnodevolumes.append(volume)