Sleep        = "max_sleep"
	IOCount      = "max_io"
	DriveWorkers = "drive_workers"

	EnvBitrot       = "MINIO_HEAL_BITROTSCAN"
	EnvSleep        = "MINIO_HEAL_MAX_SLEEP"
	EnvIOCount      = "MINIO_HEAL_MAX_IO"
	EnvDriveWorkers = "MINIO_HEAL_DRIVE_WORKERS"
)

var configMutex sync.RWMutex

// Config represents the heal settings.
type Config struct {
	// Bitrot will perform bitrot scan on local disk when checking objects.

	healFinishedStatus                     = "finished"
)

const (
	// a heal sequence with this many un-consumed heal result
	// items blocks until heal-status consumption resumes or is
	// aborted due to timeout.
	maxUnconsumedHealResultItems = 1000

	// if no heal-results are consumed (via the heal-status API)
	// for this timeout duration, the heal sequence is aborted.
	healUnconsumedTimeout = 24 * time.Hour

			case evt.Action.DeleteRestored(): // if restored copy has expired,delete it synchronously
				applyExpiryOnTransitionedObject(ctx, newObjectLayerFn(), objInfo, evt, lcEventSrc_Heal)
				return false
			case evt.Action.Delete():
				globalExpiryState.enqueueByDays(objInfo, evt, lcEventSrc_Heal)
				return true
			default:
				return false
			}
		}

		// Collect updates to tracker from concurrent healEntry calls

		log.Fatalln(err)
	}

	opts := madmin.HealOpts{
		Recursive: true,                  // recursively heal all objects at 'prefix'
		Remove:    true,                  // remove content that has lost quorum and not recoverable
		ScanMode:  madmin.HealNormalScan, // by default do not do 'deep' scanning
	}

	start, _, err := madmClnt.Heal(context.Background(), "healing-rewrite-bucket", "", opts, "", false, false)
	if err != nil {
		log.Fatalln(err)

	"runtime"
	"strconv"
	"time"

	"github.com/minio/madmin-go/v3"
	"github.com/minio/pkg/v2/env"
)

// healTask represents what to heal along with options
//
//	path: '/' =>  Heal disk formats along with metadata
//	path: 'bucket/' or '/bucket/' => Heal bucket
//	path: 'bucket/object' => Heal object
type healTask struct {
	bucket    string
	object    string
	versionID string
	opts      madmin.HealOpts

		tracker = initHealingTracker(disk, mustGetUUID())
	}

	healingLogEvent(ctx, "Healing drive '%s' - 'mc admin heal alias/ --verbose' to check the current status.", endpoint)

	buckets, _ := z.ListBuckets(ctx, BucketOptions{})
	// Buckets data are dispersed in multiple pools/sets, make
	// sure to heal all bucket metadata configuration.
	buckets = append(buckets, BucketInfo{
		Name: pathJoin(minioMetaBucket, minioConfigPrefix),

github.com/dchest/siphash
https://github.com/dchest/siphash
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			}

			item.heal.enabled = thisHash.modAlt(f.oldCache.Info.NextCycle/folder.objectHealProbDiv, f.healObjectSelect/folder.objectHealProbDiv) && globalIsErasure
			item.heal.bitrot = f.scanMode == madmin.HealDeepScan

			// if the drive belongs to an erasure set
			// that is already being healed, skip the
			// healing attempt on this drive.
			item.heal.enabled = item.heal.enabled && f.healObjectSelect > 0

```
commit 886262e58af77ebc7c836ef587c08544e9a0c271
Author: Harshavardhana <******@****.***>
Date:   Wed Nov 17 15:49:12 2021 -0800

    heal legacy objects when versioning is enabled after upgrade (#13671)
```

	if err != nil {
		t.Fatal(err)
	}

	// After heal the meta file should be as expected.
	if !fileInfoPreHeal1.Equals(fileInfoPostHeal1) {
		t.Fatal("HealObject failed")
	}

	fileInfoPostHeal2, err = disk.ReadVersion(context.Background(), "", bucket, object, "", ReadOptions{ReadData: false, Healing: true})
	if err != nil {
		t.Fatal(err)
	}

	// After heal the meta file should be as expected.