Erasure struct {
		Version string `json:"version"` // Version of 'xl' format.
		Disk    string `json:"drive"`   // Disk field carries assigned disk uuid.
		// JBOD field carries the input disk order generated the first
		// time when fresh disks were supplied.
		JBOD []string `json:"jbod"`
	} `json:"xl"` // Erasure field holds xl format.
}

// Represents the V2 backend disk structure version
// under `.minio.sys` and actual data namespace.

- Some Unformatted - format all and return success.
- Any JBOD inconsistent - return failure
- Some are corrupt (missing format.json) - return failure
- Any unrecognized disks - return failure

Some disks are offline and we have quorum.
-----------------
- Some unformatted - format all and return success,
  treat disks offline as corrupted.
- Any JBOD inconsistent - return failure
- Some are corrupt (missing format.json)

//msgp:tuple FileInfoVersions
type FileInfoVersions struct {
	// Name of the volume.
	Volume string `msg:"v,omitempty"`

	// Name of the file.
	Name string `msg:"n,omitempty"`

	// Represents the latest mod time of the
	// latest version.
	LatestModTime time.Time `msg:"lm"`

	Versions     []FileInfo `msg:"vs"`
	FreeVersions []FileInfo `msg:"fvs"`
}

			// Check if we should skip scanning folder...
			// We can only skip if we are not indexing into a compacted destination
			// and the entry itself is compacted.
			if !into.Compacted && f.oldCache.isCompacted(h) {
				if !h.mod(f.oldCache.Info.NextCycle, dataUsageUpdateDirCycles) {
					// Transfer and add as child...
					f.newCache.copyWithChildren(&f.oldCache, h, folder.parent)
					into.addChild(h)
					continue
				}
			}

			e.AllTierStats = newAllTierStats()
		}
		e.AllTierStats.merge(other.AllTierStats)
	}
}

// mod returns true if the hash mod cycles == cycle.
// If cycles is 0 false is always returned.
// If cycles is 1 true is always returned (as expected).
func (h dataUsageHash) mod(cycle uint32, cycles uint32) bool {
	if cycles <= 1 {
		return cycles == 1
	}

		var p PolicyDoc
		err = p.parseJSON(data)
		if err != nil {
			return err
		}

		if p.Version == 0 {
			// This means that policy was in the old version (without any
			// timestamp info). We fetch the mod time of the file and save
			// that as create and update date.
			p.CreateDate = objInfo.ModTime
			p.UpdateDate = objInfo.ModTime
		}

		m[policy] = p
		return nil
	}
}

	// Return the ModTime
	return fi.ModTime().UTC(), nil
}

// GetCurrentReleaseTime - returns this process's release time.  If it
// is official minio version, parsed version is returned else minio
// binary's mod time is returned.
func GetCurrentReleaseTime() (releaseTime time.Time, err error) {
	if releaseTime, err = minioVersionToReleaseTime(Version); err == nil {
		return releaseTime, err
	}

	}
	if !reflect.DeepEqual(formatV3.Erasure.Sets[0], m.Erasure.JBOD) {
		t.Fatalf("expected drive uuid: %v, got: %v", m.Erasure.JBOD, formatV3.Erasure.Sets[0])
	}

	m = &formatErasureV1{}
	m.Format = "unknown"
	m.Version = formatMetaVersionV1
	m.Erasure.Version = formatErasureVersionV1
	m.Erasure.Disk = mustGetUUID()
	m.Erasure.JBOD = []string{m.Erasure.Disk, mustGetUUID(), mustGetUUID(), mustGetUUID()}

		if count > maxCount {
			maxCount = count
			maxHash = hash
		}
	}

	if maxCount < quorum {
		return FileInfo{}, errErasureReadQuorum
	}

	// Find the successor mod time in quorum, otherwise leave the
	// candidate's successor modTime as found
	succModTimeMap := make(map[time.Time]int)
	var candidate FileInfo
	var found bool
	for i, hash := range metaHashes {

	// Reusable slice for resolution
	candidates [][]xlMetaV2ShallowVersion
}

// resolve multiple entries.
// entries are resolved by majority, then if tied by mod-time and versions.
// Names must match on all entries in m.
func (m metaCacheEntries) resolve(r *metadataResolutionParams) (selected *metaCacheEntry, ok bool) {
	if len(m) == 0 {
		return nil, false
	}