// Exact simple majority consensus
		mkTest(16, 4, 9),
		// non-tiered object require read quorum of EcM
		nonTieredTest(15, 3, 12),
		// non-tiered object with fewer than EcM in consensus
		nonTieredTest(15, 3, 11),
		// non-tiered object require read quorum of EcM
		nonTieredTest(16, 4, 12),
		// non-tiered object with fewer than EcM in consensus
		nonTieredTest(16, 4, 11),
	}
	for i, test := range tests {

		Signature string
		Type      uint8
		Flags     uint8
		EcM, EcN  uint8 // Note that these will be 0/0 for non-v2 objects and older xl.meta
	}{
		VersionID: hex.EncodeToString(z.VersionID[:]),
		ModTime:   time.Unix(0, z.ModTime),
		Signature: hex.EncodeToString(z.Signature[:]),
		Type:      z.Type,
		Flags:     z.Flags,
		EcM:       z.EcM,
		EcN:       z.EcN,
	}
	return json.Marshal(tmp)
}

			// For tiered objects, read quorum is N/2+1 to ensure simple majority on xl.meta.
			// It is not equal to EcM because the data integrity is entrusted with the warm tier.
			// However, we never go below EcM, in case of a EcM=EcN setup.
			parities[index] = max(totalShards-(totalShards/2+1), metadata.Erasure.ParityBlocks)
		} else {
			parities[index] = metadata.Erasure.ParityBlocks
		}

			return
		}
		z.Flags = xlFlags(zb0003)
	}
	z.EcN, err = dc.ReadUint8()
	if err != nil {
		err = msgp.WrapError(err, "EcN")
		return
	}
	z.EcM, err = dc.ReadUint8()
	if err != nil {
		err = msgp.WrapError(err, "EcM")
		return
	}
	return
}

// EncodeMsg implements msgp.Encodable
func (z *xlMetaV2VersionHeader) EncodeMsg(en *msgp.Writer) (err error) {

		flags |= xlFlagInlineData
	}
	var ecM, ecN uint8
	if j.Type == ObjectType && j.ObjectV2 != nil {
		ecM, ecN = uint8(j.ObjectV2.ErasureM), uint8(j.ObjectV2.ErasureN)
	}
	return xlMetaV2VersionHeader{
		VersionID: j.getVersionID(),
		ModTime:   j.getModTime().UnixNano(),
		Signature: j.getSignature(),
		Type:      j.Type,
		Flags:     flags,
		EcN:       ecN,
		EcM:       ecM,
	}
}

				// One version has EC and the other doesn't - may have been written later.
				// Compare without considering EC.
				a, b := eVer.header, oVer.header
				a.EcN, a.EcM = 0, 0
				b.EcN, b.EcM = 0, 0
				if a == b {
					continue
				}
			}
			if !strict && eVer.header.matchesNotStrict(oVer.header) {
				if prefer == nil {
					if eVer.header.sortsBefore(oVer.header) {