historyFile := pathJoin(minioConfigHistoryPrefix, uuidKV+kvPrefix)
	data, err := readConfig(ctx, objAPI, historyFile)
	if err != nil {
		return nil, err
	}

	return decryptData(data, historyFile)
}

func saveServerConfigHistory(ctx context.Context, objAPI ObjectLayer, kv []byte) error {
	uuidKV := mustGetUUID() + kvPrefix
	historyFile := pathJoin(minioConfigHistoryPrefix, uuidKV)

		}
		rc, err := localDrive.ReadFileStream(context.Background(), minioMetaBucket, pathJoin(healMRFDir, "list.bin"), 0, -1)
		if err != nil {
			continue
		}
		err = loadMRF(rc, m.opCh)
		if err != nil {
			continue
		}
		// finally delete the file after processing mrf entries
		localDrive.Delete(GlobalContext, minioMetaBucket, pathJoin(healMRFDir, "list.bin"), DeleteOptions{})
		break
	}
}

			if o.ignoreDirs {
				continue
			}
			name = trimLeadingSlash(pathJoin(name, slashSeparator))
		case tar.TypeReg, tar.TypeChar, tar.TypeBlock, tar.TypeFifo, tar.TypeGNUSparse: // = regular
			name = trimLeadingSlash(path.Clean(name))
		default:
			// ignore symlink'ed
			continue
		}
		if o.prefixAll != "" {
			name = pathJoin(o.prefixAll, name)
		}

		// Do small files async
		n++

	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)
			}
		}
		return tmpPaths
	}()

			continue
		}

		var typ os.FileMode // regular file
		switch {
		case data.FileAttributes&syscall.FILE_ATTRIBUTE_REPARSE_POINT != 0:
			// Reparse point is a symlink
			fi, err := os.Stat(pathJoin(dirPath, name))
			if err != nil {
				// It got deleted in the meantime, not found
				// or returns too many symlinks ignore this
				// file/directory.
				if osIsNotExist(err) || isSysErrPathNotFound(err) ||

	}

	// Attempt to create a file to verify the permissions later.
	// AppendFile creates file with 0666 perms.
	if err = disk.AppendFile(t.Context(), testCase.volName, pathJoin("hello-world.txt", xlStorageFormatFile), []byte("Hello World")); err != nil {
		t.Fatalf("Create a file `test` failed with %s expected to pass.", err)
	}

	// CheckFile - stat the file.

}

// Lock the namespace resource.
func (n *nsLockMap) lock(ctx context.Context, volume string, path string, lockSource, opsID string, readLock bool, timeout time.Duration) (locked bool) {
	resource := pathJoin(volume, path)

	n.lockMapMutex.Lock()
	nsLk, found := n.lockMap[resource]
	if !found {
		nsLk = &nsLock{
			LRWMutex: lsync.NewLRWMutex(),
		}

		// Fallback for filesystems (like old XFS) that don't
		// support Dirent.Type and have DT_UNKNOWN (0) there
		// instead.
		if typ == unexpectedFileMode || typ&os.ModeSymlink == os.ModeSymlink {
			fi, err := Stat(pathJoin(dirPath, string(name)))
			if err != nil {
				// It got deleted in the meantime, not found
				// or returns too many symlinks ignore this
				// file/directory.
				if osIsNotExist(err) || isSysErrPathNotFound(err) ||

			if localDrives[index] == nil {
				return errDiskNotFound
			}
			volInfo, err := localDrives[index].StatVol(ctx, bucket)
			if err != nil {
				if opts.Deleted {
					dvi, derr := localDrives[index].StatVol(ctx, pathJoin(minioMetaBucket, bucketMetaPrefix, deletedBucketsPrefix, bucket))
					if derr != nil {
						return err
					}
					bucketsInfo[index] = BucketInfo{Name: bucket, Deleted: dvi.Created}
					return nil
				}

		if !ok {
			return true
		}
		obj, ok := value.(*currentPathTracker)
		if !ok {
			return true
		}
		strptr := (*string)(atomic.LoadPointer(obj.name))
		if strptr != nil {
			res = append(res, pathJoin(prefix, name, *strptr))
		}
		return true
	})
	return res
}

// activeDrives returns the number of currently active disks.
// (since this is concurrent it may not be 100% reliable)