// Updates are sent on a regular basis and the caller *must* consume them.
func (er erasureObjects) nsScanner(ctx context.Context, buckets []BucketInfo, wantCycle uint32, updates chan<- dataUsageCache, healScanMode madmin.HealScanMode) error {
	if len(buckets) == 0 {
		return nil
	}

	// Collect disks we can use.
	disks, healing := er.getOnlineDisksWithHealing(false)

// If versioned the latest version will be returned.
func (e *metaCacheEntry) fileInfo(bucket string) (FileInfo, error) {
	if e.isDir() {
		return FileInfo{
			Volume: bucket,
			Name:   e.name,
			Mode:   uint32(os.ModeDir),
		}, nil
	}
	if e.cached != nil {
		if len(e.cached.versions) == 0 {
			// This special case is needed to handle xlMeta.versions == 0
			return FileInfo{
				Volume:   bucket,

	case writeMode:
		defer updateOSMetrics(osMetricOpenFileWFd, name)(err)
	default:
		defer updateOSMetrics(osMetricOpenFileRFd, name)(err)
	}
	var e error
	fd, e = syscall.Open(name, flag|syscall.O_CLOEXEC, uint32(perm))
	if e != nil {
		return -1, &os.PathError{Op: "open", Path: name, Err: e}
	}
	return fd, nil
}

// Forked from Golang but chooses to avoid performing lookup
//

		BoolField          bool
		IntField           int
		Int8Field          int8
		Int16Field         int16
		Int32Field         int32
		Int64Field         int64
		UIntField          uint
		UInt8Field         uint8
		UInt16Field        uint16
		UInt32Field        uint32
		UInt64Field        uint64
		Float32Field       float32
		Float64Field       float64
		StringField        string

	name              string
	parent            *dataUsageHash
	objectHealProbDiv uint32
}

type folderScanner struct {
	root        string
	getSize     getSizeFn
	oldCache    dataUsageCache
	newCache    dataUsageCache
	updateCache dataUsageCache

	dataUsageScannerDebug bool
	healObjectSelect      uint32 // Do a heal check on an object once every n cycles. Must divide into healFolderInclude

	if cardinality <= 0 {
		// Returns an empty int slice for cardinality < 0.
		return nil
	}

	nums := make([]int, cardinality)
	keyCrc := crc32.Checksum([]byte(key), crc32.IEEETable)

	start := int(keyCrc % uint32(cardinality))
	for i := 1; i <= cardinality; i++ {
		nums[i-1] = 1 + ((start + i) % cardinality)
	}
	return nums
}

// Reads all `xl.meta` metadata as a FileInfo slice.

	ReplicationState           ReplicationState
	DeleteMarker               bool

	OpType               replication.Type
	EventType            string
	RetryCount           uint32
	ResetID              string
	Dsc                  ReplicateDecision
	ExistingObjResync    ResyncDecision
	TargetArn            string
	TargetStatuses       map[string]replication.StatusType

			plSize += len(keys[i]) + len(vals[i]) + msgp.StringPrefixSize + msgp.ArrayHeaderSize
		}
	}
	payload := make([]byte, 1, plSize)
	payload[0] = xlMetaInlineDataVer
	payload = msgp.AppendMapHeader(payload, uint32(len(keys)))
	for i := range keys {
		payload = msgp.AppendStringFromBytes(payload, keys[i])
		payload = msgp.AppendBytes(payload, vals[i])
	}
	*x = payload
}

		}
	}
}

const (
	diskHealthOK int32 = iota
	diskHealthFaulty
)

type diskHealthTracker struct {
	// atomic time of last success
	lastSuccess int64

	// atomic time of last time a token was grabbed.
	lastStarted int64

	// Atomic status of disk.
	status atomic.Int32

	// Atomic number indicates if a disk is hung
	waiting atomic.Int32
}

import (
	"github.com/tinylib/msgp/msgp"
)

// DecodeMsg implements msgp.Decodable
func (z *BucketMetadata) DecodeMsg(dc *msgp.Reader) (err error) {
	var field []byte
	_ = field
	var zb0001 uint32
	zb0001, err = dc.ReadMapHeader()
	if err != nil {
		err = msgp.WrapError(err)
		return
	}
	for zb0001 > 0 {
		zb0001--
		field, err = dc.ReadMapKeyPtr()
		if err != nil {
			err = msgp.WrapError(err)