func (p *Provider) RootFsStats() (*statsapi.FsStats, error) {
	rootFsInfo, err := p.cadvisor.RootFsInfo()
	if err != nil {
		return nil, fmt.Errorf("failed to get rootFs info: %v", err)
	}

	var nodeFsInodesUsed *uint64
	if rootFsInfo.Inodes != nil && rootFsInfo.InodesFree != nil {
		nodeFsIU := *rootFsInfo.Inodes - *rootFsInfo.InodesFree
		nodeFsInodesUsed = &nodeFsIU
	}

}

// rootFsInfoToFsStats is a utility to convert rootFsInfo into statsapi.FsStats
func rootFsInfoToFsStats(rootFsInfo *cadvisorapiv2.FsInfo) *statsapi.FsStats {
	return &statsapi.FsStats{
		Time:           metav1.NewTime(rootFsInfo.Timestamp),
		AvailableBytes: &rootFsInfo.Available,
		CapacityBytes:  &rootFsInfo.Capacity,
		InodesFree:     rootFsInfo.InodesFree,
		Inodes:         rootFsInfo.Inodes,
	}

	return fakeMetricsProvidersToStats([]volume.MetricsProvider{metricsProvider}, rootFsInfo)
}

func (f *fakeHostStatsProvider) getPodEtcHostsStats(podUID types.UID, rootFsInfo *cadvisorapiv2.FsInfo) (*statsapi.FsStats, error) {
	return nil, fmt.Errorf("not implemented")
}

func fakeMetricsProvidersToStats(metricsProviders []volume.MetricsProvider, rootFsInfo *cadvisorapiv2.FsInfo) (*statsapi.FsStats, error) {

}

// RootFsInfo mocks base method.
func (m *MockInterface) RootFsInfo() (v2.FsInfo, error) {
	m.ctrl.T.Helper()
	ret := m.ctrl.Call(m, "RootFsInfo")
	ret0, _ := ret[0].(v2.FsInfo)
	ret1, _ := ret[1].(error)
	return ret0, ret1
}

// RootFsInfo indicates an expected call of RootFsInfo.
func (mr *MockInterfaceMockRecorder) RootFsInfo() *gomock.Call {
	mr.mock.ctrl.T.Helper()

}

// ImagesFsInfo is a fake implementation of Interface.ImagesFsInfo.
func (c *Fake) ImagesFsInfo() (cadvisorapiv2.FsInfo, error) {
	return cadvisorapiv2.FsInfo{}, nil
}

// RootFsInfo is a fake implementation of Interface.RootFsInfo.
func (c *Fake) RootFsInfo() (cadvisorapiv2.FsInfo, error) {
	return cadvisorapiv2.FsInfo{}, nil
}

// ContainerFsInfo is a fake implementation of Interface.ContainerFsInfo.

	podSandbox *runtimeapi.PodSandbox,
	rootFsInfo *cadvisorapiv2.FsInfo, updateCPUNanoCoreUsage bool) error {
	for _, criContainerStat := range criSandboxStat.Linux.Containers {
		container, found := containerMap[criContainerStat.Attributes.Id]
		if !found {
			continue
		}
		// Fill available stats for full set of required pod stats
		cs, err := p.makeContainerStats(criContainerStat, container, rootFsInfo, fsIDtoInfo, podSandbox.GetMetadata(),

	ps *statsapi.PodStats, fsIDtoInfo map[runtimeapi.FilesystemIdentifier]*cadvisorapiv2.FsInfo,
	containerMap map[string]*runtimeapi.Container,
	podSandbox *runtimeapi.PodSandbox,
	rootFsInfo *cadvisorapiv2.FsInfo, updateCPUNanoCoreUsage bool) error {
	return nil
}

func addCRIPodNetworkStats(ps *statsapi.PodStats, criPodStat *runtimeapi.PodSandboxStats) {
}

	mockCadvisor := cadvisortest.NewMockInterface(mockCtrl)
	rootfs := cadvisorapiv2.FsInfo{
		Capacity: 8000,
	}
	mockCadvisor.EXPECT().RootFsInfo().Return(rootfs, nil)
	mockCadvisorError := cadvisortest.NewMockInterface(mockCtrlError)
	mockCadvisorError.EXPECT().RootFsInfo().Return(cadvisorapiv2.FsInfo{}, errors.New("Unable to get rootfs data from cAdvisor interface"))
	cases := []struct {
		name                                 string

	// Returns usage information about the filesystem holding container images.
	ImagesFsInfo() (cadvisorapiv2.FsInfo, error)

	// Returns usage information about the root filesystem.
	RootFsInfo() (cadvisorapiv2.FsInfo, error)

	// Returns usage information about the writeable layer.
	// KEP 4191 can separate the image filesystem
	ContainerFsInfo() (cadvisorapiv2.FsInfo, error)

	return cadvisorapiv2.FsInfo{}, nil
}

func (cu *cadvisorClient) ContainerFsInfo() (cadvisorapiv2.FsInfo, error) {
	return cadvisorapiv2.FsInfo{}, nil
}

func (cu *cadvisorClient) RootFsInfo() (cadvisorapiv2.FsInfo, error) {
	return cu.GetDirFsInfo(cu.rootPath)
}

func (cu *cadvisorClient) GetDirFsInfo(path string) (cadvisorapiv2.FsInfo, error) {
	return cu.winStatsClient.GetDirFsInfo(path)