err = en.Append(0xa2, 0x6c, 0x75)
	if err != nil {
		return
	}
	err = en.WriteTime(z.LastUpdate)
	if err != nil {
		err = msgp.WrapError(err, "LastUpdate")
		return
	}
	// write "dec"
	err = en.Append(0xa3, 0x64, 0x65, 0x63)
	if err != nil {
		return
	}
	if z.Decommission == nil {
		err = en.WriteNil()
		if err != nil {
			return
		}
	} else {
		err = z.Decommission.EncodeMsg(en)

	if z.XferRateLrg == nil {
		err = en.WriteNil()
		if err != nil {
			return
		}
	} else {
		err = z.XferRateLrg.EncodeMsg(en)
		if err != nil {
			err = msgp.WrapError(err, "XferRateLrg")
			return
		}
	}
	// write "st"
	err = en.Append(0xa2, 0x73, 0x74)
	if err != nil {
		return
	}
	if z.XferRateSml == nil {
		err = en.WriteNil()
		if err != nil {
			return
		}

	}
	if (zb0001Mask & 0x1) == 0 { // if not omitted
		// write "V2Obj"
		err = en.Append(0xa5, 0x56, 0x32, 0x4f, 0x62, 0x6a)
		if err != nil {
			return
		}
		if z.ObjectV2 == nil {
			err = en.WriteNil()
			if err != nil {
				return
			}
		} else {
			// map header, size 1
			// write "DDir"
			err = en.Append(0x81, 0xa4, 0x44, 0x44, 0x69, 0x72)
			if err != nil {
				return
			}

    port: 9000
    scheme: HTTP
  initialDelaySeconds: 120
  periodSeconds: 15
  timeoutSeconds: 10
  successThreshold: 1
  failureThreshold: 3
```

## Cluster probe

### Cluster-writeable probe

The reply is '200 OK' if cluster has write quorum if not it returns '503 Service Unavailable'.

```
curl http://minio1:9001/minio/health/cluster
HTTP/1.1 503 Service Unavailable
Accept-Ranges: bytes

	if err != nil {
		return
	}
	err = en.WriteTime(z.Timestamp)
	if err != nil {
		err = msgp.WrapError(err, "Timestamp")
		return
	}
	// write "TimeLastRefresh"
	err = en.Append(0xaf, 0x54, 0x69, 0x6d, 0x65, 0x4c, 0x61, 0x73, 0x74, 0x52, 0x65, 0x66, 0x72, 0x65, 0x73, 0x68)
	if err != nil {
		return
	}
	err = en.WriteTime(z.TimeLastRefresh)
	if err != nil {

        long accessTime = e.getAccessTime();
        assertTrue(accessTime >= lastAccessTime);
        lastAccessTime = accessTime;
        long writeTime = e.getWriteTime();
        assertTrue(writeTime >= lastWriteTime);
        lastWriteTime = writeTime;
      }

      lastAccessTime = 0;
      lastWriteTime = 0;
      for (ReferenceEntry<K, V> e : segment.accessQueue) {

        long accessTime = e.getAccessTime();
        assertTrue(accessTime >= lastAccessTime);
        lastAccessTime = accessTime;
        long writeTime = e.getWriteTime();
        assertTrue(writeTime >= lastWriteTime);
        lastWriteTime = writeTime;
      }

      lastAccessTime = 0;
      lastWriteTime = 0;
      for (ReferenceEntry<K, V> e : segment.accessQueue) {

	if z.Data == nil { // allownil: if nil
		err = en.WriteNil()
		if err != nil {
			return
		}
	} else {
		err = en.WriteBytes(z.Data)
		if err != nil {
			err = msgp.WrapError(err, "Data")
			return
		}
	}
	err = en.WriteInt(z.NumVersions)
	if err != nil {
		err = msgp.WrapError(err, "NumVersions")
		return
	}
	err = en.WriteTime(z.SuccessorModTime)
	if err != nil {

    }

    // The code below is exactly the same for each write entry type.

    volatile long writeTime = Long.MAX_VALUE;

    @Override
    public long getWriteTime() {
      return writeTime;
    }

    @Override
    public void setWriteTime(long time) {
      this.writeTime = time;
    }

    // Guarded By Segment.this
    @Weak ReferenceEntry<K, V> nextWrite = nullEntry();

    }

    // The code below is exactly the same for each write entry type.

    volatile long writeTime = Long.MAX_VALUE;

    @Override
    public long getWriteTime() {
      return writeTime;
    }

    @Override
    public void setWriteTime(long time) {
      this.writeTime = time;
    }

    // Guarded By Segment.this
    @Weak ReferenceEntry<K, V> nextWrite = nullEntry();