Size    int
			}
		}
		var ei erasureInfo
		var idx int
		if err := json.Unmarshal(meta, &ei); err == nil && ei.V2Obj != nil {
			if size == 0 {
				size = ei.V2Obj.Size
				mapped = make([]byte, size)
				filled = make([]byte, size)
			}
			data = ei.V2Obj.EcM
			parity = ei.V2Obj.EcN
			if shards == 0 {
				shards = data + parity
			}
			idx = ei.V2Obj.EcIndex - 1

// - 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
	}

	// File metadata
	Metadata map[string]string `msg:"meta"`

	// All the parts per object.
	Parts []ObjectPartInfo `msg:"parts"`

	// Erasure info for all objects.
	Erasure ErasureInfo `msg:"ei"`

	MarkDeleted      bool             `msg:"md"` // mark this version as deleted
	ReplicationState ReplicationState `msg:"rs"` // Internal replication state to be passed back in ObjectInfo