formats[i] = nil
		}
	}
	if _, err = getFormatErasureInQuorum(formats); err == nil {
		t.Fatal("Unexpected success")
	}
}

// Get backend Erasure format in quorum `format.json`.
func getFormatErasureInQuorumOld(formats []*formatErasureV3) (*formatErasureV3, error) {
	formatHashes := make([]string, len(formats))
	for i, format := range formats {
		if format == nil {
			continue
		}
		h := sha256.New()