// Buckets data are dispersed in multiple zones/sets, make
	// sure to decommission the necessary metadata.
	decomMetaBuckets := []decomBucketInfo{
		{
			Name:   minioMetaBucket,
			Prefix: minioConfigPrefix,
		},
		{
			Name:   minioMetaBucket,
			Prefix: bucketMetaPrefix,
		},
	}

	return append(decomMetaBuckets, decomBuckets...), nil
}

	defer disk.Delete(context.TODO(), minioMetaBucket, tmpFormat, DeleteOptions{
		Recursive: false,
		Immediate: false,
	})

	// write to unique file.
	if err = disk.WriteAll(context.TODO(), minioMetaBucket, tmpFormat, formatData); err != nil {
		return err
	}

	// Rename file `uuid.json` --> `format.json`.

			}
		}
		// Load first part metadata...
		// Read metadata associated with the object from all disks.
		fi, metaArr, onlineDisks, err := er.getObjectFileInfo(ctx, minioMetaBucket, o.objectPath(0), ObjectOptions{}, true)
		if err != nil {
			switch toObjectErr(err, minioMetaBucket, o.objectPath(0)).(type) {
			case ObjectNotFound, InsufficientReadQuorum:
				retryWait()
				continue
			}
			// Allow one fast retry for other errors.

	if cleanup {
		// Recursively delete all caches.
		objAPI := newObjectLayerFn()
		if objAPI != nil {
			ez, ok := objAPI.(deleteAllStorager)
			if ok {
				ctx := context.Background()
				ez.deleteAll(ctx, minioMetaBucket, metacachePrefixForID(bucket, slashSeparator))
			}
		}
	}
	return &bucketMetacache{
		bucket:     bucket,
		caches:     make(map[string]metacache, 10),
		cachesRoot: make(map[string][]string, 10),
	}
}

				if err != nil {
					//nolint:gocritic
					log.Fatalf("failed to marshal format.json for %s: %v", drive.String(), err)
				}
				fmtJSON := filepath.Join(drive.Host, drive.Path, minioMetaBucket, "format.json")
				embedFileInZip(fmtZipW, fmtJSON, fmtBytes, 0o600)
			}
		}
	}

				time.Second)
			time.Sleep(duration)
		}
	}()
}

func runCallhome(ctx context.Context, objAPI ObjectLayer) bool {
	// Make sure only 1 callhome is running on the cluster.
	locker := objAPI.NewNSLock(minioMetaBucket, "callhome/runCallhome.lock")
	lkctx, err := locker.GetLock(ctx, callhomeLeaderLockTimeout)
	if err != nil {
		// lock timedout means some other node is the leader,
		// cycle back return 'true'
		return true
	}

})

type sharedLock struct {
	lockContext chan LockContext
}

func (ld sharedLock) backgroundRoutine(ctx context.Context, objAPI ObjectLayer, lockName string) {
	for {
		locker := objAPI.NewNSLock(minioMetaBucket, lockName)
		lkctx, err := locker.GetLock(ctx, sharedLockTimeout)
		if err != nil {
			continue
		}

	keepLock:
		for {
			select {
			case <-ctx.Done():
				return

	"github.com/valyala/bytebufferpool"
)

const (
	// MinIO meta bucket.
	minioMetaBucket = ".minio.sys"
	// Multipart meta prefix.
	mpartMetaPrefix = "multipart"
	// MinIO Multipart meta prefix.
	minioMetaMultipartBucket = minioMetaBucket + SlashSeparator + mpartMetaPrefix
	// MinIO tmp meta prefix.
	minioMetaTmpBucket = minioMetaBucket + "/tmp"
	// MinIO tmp meta prefix for deleted objects.

	data, err := json.Marshal(item)
	if err != nil {
		return err
	}
	if GlobalKMS != nil {
		data, err = config.EncryptBytes(GlobalKMS, data, kms.Context{
			minioMetaBucket: path.Join(minioMetaBucket, itemPath),
		})
		if err != nil {
			return err
		}
	}
	return saveKeyEtcd(ctx, ies.client, itemPath, data, opts...)
}

	}

	localPaths := globalEndpoints.LocalDisksPaths()
	var ignoredPaths []string
	paths := func() (tmpPaths []string) {
		for _, lp := range localPaths {
			if _, err := Lstat(pathJoin(lp, minioMetaBucket, formatConfigFile)); err == nil {
				tmpPaths = append(tmpPaths, pathJoin(lp, minioMetaTmpBucket))
			} else {
				// Use dperf on only formatted drives.
				ignoredPaths = append(ignoredPaths, lp)
			}
		}