'Returns a dictionary of all attached volumes minus the root device in
the case of EBS backed instances'

@property
def attached_vols(self):

    attached_vols = {}
    attached_vols.update(self.block_device_mapping)
    if self.is_ebs_backed():
        root_dev = self.root_device_name
        if (root_dev in attached_vols):
            attached_vols.pop(root_dev)
    return attached_vols
