func NewChecksumFromData(t ChecksumType, data []byte) *Checksum {
	if !t.IsSet() {
		return nil
	}
	h := t.Hasher()
	h.Write(data)
	raw := h.Sum(nil)
	c := Checksum{Type: t, Encoded: base64.StdEncoding.EncodeToString(raw), Raw: raw}
	if !c.Valid() {
		return nil
	}
	return &c
}

// ReadCheckSums will read checksums from b and return them.

	for _, i := range r.Perm(len(disks)) {
		if disks[i] != nil && disks[i].IsLocal() {
			newDisks = append(newDisks, disks[i])
		}
	}
	return newDisks
}

// readMultipleFiles Reads raw data from all specified files from all disks.
func readMultipleFiles(ctx context.Context, disks []StorageAPI, req ReadMultipleReq, readQuorum int) ([]ReadMultipleResp, error) {
	resps := make([]chan ReadMultipleResp, len(disks))

		prometheus.NewDesc(
			prometheus.BuildFQName(minioNamespace, "capacity_raw", "total"),
			"Total capacity online in the cluster",
			nil, nil),
		prometheus.GaugeValue,
		float64(GetTotalCapacity(server.Disks)),
	)

	// Report total capacity free
	ch <- prometheus.MustNewConstMetric(
		prometheus.NewDesc(
			prometheus.BuildFQName(minioNamespace, "capacity_raw_free", "total"),
			"Total free capacity online in the cluster",

}

const (
	healthCapacityRawTotalBytes    = "capacity_raw_total_bytes"
	healthCapacityRawFreeBytes     = "capacity_raw_free_bytes"
	healthCapacityUsableTotalBytes = "capacity_usable_total_bytes"
	healthCapacityUsableFreeBytes  = "capacity_usable_free_bytes"
)

var (
	healthCapacityRawTotalBytesMD = NewGaugeMD(healthCapacityRawTotalBytes,
		"Total cluster raw storage capacity in bytes")

	for i := range listener.listeners {
		addrs = append(addrs, listener.listeners[i].Addr())
	}

	return addrs
}

// TCPOptions specify customizable TCP optimizations on raw socket
type TCPOptions struct {
	UserTimeout int // this value is expected to be in milliseconds
	// When the net.Conn is idle for more than ReadTimeout duration, we close the connection on the client proactively.

		TLSClientConfig:       &tlsClientConfig,
		ForceAttemptHTTP2:     s.EnableHTTP2,
		// Go net/http automatically unzip if content-type is
		// gzip disable this feature, as we are always interested
		// in raw stream.
		DisableCompression: true,
	}

	// https://github.com/golang/go/issues/23559
	// https://github.com/golang/go/issues/42534
	// https://github.com/golang/go/issues/43989

					if _, ok := idMap[id]; ok {
						res = append(res, disk)
					}
				}
			}
		}
	}
	return res
}

// GetRawData will return all files with a given raw path to the callback.
// Errors are ignored, only errors from the callback are returned.
// For now only direct file paths are supported.

	s3MetricNamespace        MetricNamespace = "minio_s3"
)

const (
	cacheSubsystem            MetricSubsystem = "cache"
	capacityRawSubsystem      MetricSubsystem = "capacity_raw"
	capacityUsableSubsystem   MetricSubsystem = "capacity_usable"
	driveSubsystem            MetricSubsystem = "drive"
	interfaceSubsystem        MetricSubsystem = "if"
	memSubsystem              MetricSubsystem = "mem"

					rpc.UpdateMetacacheListing(ctx, *c)
				}
			}
		}()
		o.ID = ""
	}

	// Do listing in-place.
	// Create output for our results.
	// Create filter for results.
	o.debugln("Raw List", o)
	filterCh := make(chan metaCacheEntry, o.Limit)
	listCtx, cancelList := context.WithCancel(ctx)
	filteredResults := o.gatherResults(listCtx, filterCh)
	var wg sync.WaitGroup
	wg.Add(1)
	var listErr error

				return i
			}
		}
		return -1
	}

	for i, ver := range f.Versions {
		if ver.VersionID == v {
			return i
		}
	}
	return -1
}

// RawFileInfo - represents raw file stat information as byte array.
// The above means that any added/deleted fields are incompatible.
// Make sure to bump the internode version at storage-rest-common.go
type RawFileInfo struct {