// - distribution indexes are different
func (ei ErasureInfo) Equal(nei ErasureInfo) bool {
	if ei.Algorithm != nei.Algorithm {
		return false
	}
	if ei.DataBlocks != nei.DataBlocks {
		return false
	}
	if ei.ParityBlocks != nei.ParityBlocks {
		return false
	}
	if ei.BlockSize != nei.BlockSize {
		return false
	}
	if len(ei.Distribution) != len(nei.Distribution) {
		return false
	}