type PartTooSmall struct {
	PartSize   int64
	PartNumber int
	PartETag   string
}

func (e PartTooSmall) Error() string {
	return fmt.Sprintf("Part size for %d should be at least 5MB", e.PartNumber)
}

// PartTooBig returned if size of part is bigger than the allowed limit.
type PartTooBig struct{}

func (e PartTooBig) Error() string {
	return "Part size bigger than the allowed limit"

		var maxUsedPct int
		for _, disk := range zinfo {
			if disk == nil || disk.Total == 0 {
				continue
			}
			available += disk.Total - disk.Used

			// set maxUsedPct to the value from the disk with the least space percentage.
			if pctUsed := int(disk.Used * 100 / disk.Total); pctUsed > maxUsedPct {
				maxUsedPct = pctUsed
			}
		}

		// Since we are comparing pools that may have a different number of sets

		HTTPStatusCode: http.StatusNotImplemented,
	},
	ErrPreconditionFailed: {
		Code:           "PreconditionFailed",
		Description:    "At least one of the pre-conditions you specified did not hold",
		HTTPStatusCode: http.StatusPreconditionFailed,
	},
	ErrRequestTimeTooSkewed: {
		Code:           "RequestTimeTooSkewed",

	for i := range onlineMeta {
		// verify metadata is valid, it has similar erasure info
		// as well as common modtime, if modtime is not possible
		// verify if it has common "etag" at least.
		if onlineMeta[i].IsValid() && onlineMeta[i].Erasure.Equal(fi.Erasure) {
			ok := onlineMeta[i].ModTime.Equal(modTime)
			if modTime.IsZero() || modTime.Equal(timeSentinel) {

			snapshot := *v
			req.GetBody = func() (io.ReadCloser, error) {
				r := snapshot
				return io.NopCloser(&r), nil
			}
		default:
			// This is where we'd set it to -1 (at least
			// if body != NoBody) to mean unknown, but
			// that broke people during the Go 1.8 testing
			// period. People depend on it being 0 I
			// guess. Maybe retry later. See Issue 18117.
		}

						continue
					}

					versionsFound++
				}
			}); err != nil {
				return err
			}

			if versionsFound > 0 {
				return fmt.Errorf("at least %d object(s)/version(s) were found in bucket `%s` after decommissioning", versionsFound, bi.Name)
			}
		}
	}

	return nil
}

	var notFoundHandler http.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		http.Error(w, "Metrics Resource Not found", http.StatusNotFound)
	})

	// Require that metrics path has at least component.
	if path == "/" {
		return notFoundHandler
	}

	if isListingRequest {
		handler := h.listMetrics(path)
		if handler == nil {
			return notFoundHandler
		}
		return handler
	}

				}
				legacyPreserved = true
			}
		}
	} else {
		// It is possible that some drives may not have `xl.meta` file
		// in such scenarios verify if at least `part.1` files exist
		// to verify for legacy version.
		if formatLegacy {
			// We only need this code if we are moving
			// from `xl.json` to `xl.meta`, we can avoid
			// one extra readdir operation here for all

	// prefers setCounts to be sorted for optimal behavior.
	if divisibleSize < setCounts[len(setCounts)-1] {
		return divisibleSize
	}

	// Figure out largest value of total_drives_in_erasure_set which results
	// in least number of total_drives/total_drives_erasure_set ratio.
	prevD := divisibleSize / setCounts[0]
	for _, cnt := range setCounts {
		if divisibleSize%cnt == 0 {
			d := divisibleSize / cnt
			if d <= prevD {
				prevD = d

func objectQuorumFromMeta(ctx context.Context, partsMetaData []FileInfo, errs []error, defaultParityCount int) (objectReadQuorum, objectWriteQuorum int, err error) {
	// There should be at least half correct entries, if not return failure
	expectedRQuorum := len(partsMetaData) / 2
	if defaultParityCount == 0 {
		// if parity count is '0', we expected all entries to be present.
		expectedRQuorum = len(partsMetaData)