diff --git a/api/v1/curvecluster_types.go b/api/v1/curvecluster_types.go
index ceec3af6..cfd86676 100644
--- a/api/v1/curvecluster_types.go
+++ b/api/v1/curvecluster_types.go
@@ -23,46 +23,41 @@ import (
 
 const CustomResourceGroup = "curve.opencurve.io"
 
-// ConditionType represent a resource's status
+// ConditionType represents a resource's status
 type ConditionType string
 
 const (
-	// ClusterPhasePending: The cluster is running to create.
-	// ClusterPhaseReady: The cluster has been created successfully.
-	// ClusterPhaseDeleting: The cluster is running to delete.
-	// ClusterPhaseError: The cluster created failed becasue some reason.
-	// ClusterPhaseUnknown: Unknow phase
-	// ClusterPending
+	// ClusterPhasePending indicates the cluster is running to create.
 	ClusterPhasePending ConditionType = "Pending"
-	// ClusterReady
+	// ClusterPhaseReady indicates the cluster has been created successfully.
 	ClusterPhaseReady ConditionType = "Ready"
-	// ClusterPhaseDeleting
+	// ClusterPhaseDeleting indicates the cluster is running to delete.
 	ClusterPhaseDeleting ConditionType = "Deleting"
-	// ClusterPhaseError
+	// ClusterPhaseError indicates the cluster created failed because of some reason.
 	ClusterPhaseError ConditionType = "Failed"
-	// ClusterPhaseUnknown
+	// ClusterPhaseUnknown is unknown phase
 	ClusterPhaseUnknown ConditionType = "Unknown"
 )
 
 const (
-	// ConditionTypeEtcdReady
+	// ConditionTypeEtcdReady indicates the etcd is ready
 	ConditionTypeEtcdReady ConditionType = "EtcdReady"
-	// ConditionTypeMdsReady
+	// ConditionTypeMdsReady indicates the mds is ready
 	ConditionTypeMdsReady ConditionType = "MdsReady"
-	// ConditionTypeFormatedReady
+	// ConditionTypeFormatedReady indicates the formated job is ready
 	ConditionTypeFormatedReady ConditionType = "formatedReady"
-	// ConditionTypeChunkServerReady
+	// ConditionTypeChunkServerReady indicates the chunk server is ready
 	ConditionTypeChunkServerReady ConditionType = "ChunkServerReady"
-	// ConditionTypeSnapShotCloneReady
+	// ConditionTypeSnapShotCloneReady indicates the snapshot clone is ready
 	ConditionTypeSnapShotCloneReady ConditionType = "SnapShotCloneReady"
-	// ConditionTypeDeleting
+	// ConditionTypeDeleting indicates it's deleting
 	ConditionTypeDeleting ConditionType = "Deleting"
-	// ConditionTypeClusterReady
+	// ConditionTypeClusterReady indicates the cluster is ready
 	ConditionTypeClusterReady ConditionType = "Ready"
-	// ConditionTypeFailure
+	// ConditionTypeFailure indicates it's failed
 	ConditionTypeFailure ConditionType = "Failed"
-	// ConditionTypeUnknown
-	ConditionTypeUnknown ConditionType = "Unknow"
+	// ConditionTypeUnknown is unknown condition
+	ConditionTypeUnknown ConditionType = "Unknown"
 )
 
 type ConditionStatus string
@@ -146,7 +141,7 @@ type CurveClusterSpec struct {
 // CurveClusterStatus defines the observed state of CurveCluster
 type CurveClusterStatus struct {
 	// Phase is a summary of cluster state.
-	// It can be translate from the last conditiontype
+	// It can be translated from the last conditiontype
 	Phase ConditionType `json:"phase,omitempty"`
 
 	// Condition contains current service state of cluster such as progressing/Ready/Failure...
@@ -194,7 +189,7 @@ type CurveVersionSpec struct {
 	ImagePullPolicy v1.PullPolicy `json:"imagePullPolicy,omitempty"`
 }
 
-// EtcdSpec
+// EtcdSpec is the spec of etcd
 type EtcdSpec struct {
 	// +optional
 	PeerPort int `json:"peerPort,omitempty"`
@@ -206,7 +201,7 @@ type EtcdSpec struct {
 	Config map[string]string `json:"config,omitempty"`
 }
 
-// MdsSpec
+// MdsSpec is the spec of mds
 type MdsSpec struct {
 	// +optional
 	Port int `json:"port,omitempty"`
@@ -218,7 +213,7 @@ type MdsSpec struct {
 	Config map[string]string `json:"config,omitempty"`
 }
 
-// SnapShotCloneSpec
+// SnapShotCloneSpec is the spec of snapshot clone
 type SnapShotCloneSpec struct {
 	// +optional
 	Enable bool `json:"enable,omitempty"`
@@ -236,7 +231,7 @@ type SnapShotCloneSpec struct {
 	S3Config S3ConfigSpec `json:"s3Config,omitempty"`
 }
 
-// S3Config
+// S3ConfigSpec is the spec of s3 config
 type S3ConfigSpec struct {
 	AK                 string `json:"ak,omitempty"`
 	SK                 string `json:"sk,omitempty"`
@@ -244,7 +239,7 @@ type S3ConfigSpec struct {
 	SnapShotBucketName string `json:"bucketName,omitempty"`
 }
 
-// StorageScopeSpec
+// StorageScopeSpec is the spec of storage scope
 type StorageScopeSpec struct {
 	// +optional
 	UseSelectedNodes bool `json:"useSelectedNodes,omitempty"`
@@ -265,7 +260,7 @@ type StorageScopeSpec struct {
 	SelectedNodes []SelectedNodesSpec `json:"selectedNodes,omitempty"`
 }
 
-// Device represents a disk to use in the cluster
+// DevicesSpec represents a disk to use in the cluster
 type DevicesSpec struct {
 	// +optional
 	Name string `json:"name,omitempty"`
diff --git a/main.go b/main.go
index df2b1717..5e5dc8af 100644
--- a/main.go
+++ b/main.go
@@ -20,6 +20,7 @@ import (
 	"flag"
 	"os"
 
+	"github.com/spf13/pflag"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/client-go/kubernetes"
 	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
@@ -30,7 +31,6 @@ import (
 	operatorv1 "github.com/opencurve/curve-operator/api/v1"
 	"github.com/opencurve/curve-operator/pkg/clusterd"
 	"github.com/opencurve/curve-operator/pkg/controllers"
-	"github.com/spf13/pflag"
 	// +kubebuilder:scaffold:imports
 )
 
diff --git a/pkg/chunkserver/chunkfilepool.go b/pkg/chunkserver/chunkfilepool.go
index 91269e4c..77463c64 100644
--- a/pkg/chunkserver/chunkfilepool.go
+++ b/pkg/chunkserver/chunkfilepool.go
@@ -17,8 +17,8 @@ import (
 )
 
 const (
-	PrepareJobName         = "prepare-chunkfile"
-	DEFAULT_CHUNKFILE_SIZE = 16 * 1024 * 1024 // 16MB
+	PrepareJobName       = "prepare-chunkfile"
+	DefaultChunkfileSize = 16 * 1024 * 1024 // 16MB
 
 	formatConfigMapName     = "format-chunkfile-conf"
 	formatScriptFileDataKey = "format.sh"
@@ -267,7 +267,7 @@ func (c *Cluster) makeFormatContainer(device curvev1.DevicesSpec, volumeMounts [
 	readOnlyRootFilesystem := false
 
 	argsPercent := strconv.Itoa(device.Percentage)
-	argsFileSize := strconv.Itoa(DEFAULT_CHUNKFILE_SIZE)
+	argsFileSize := strconv.Itoa(DefaultChunkfileSize)
 	argsFilePoolDir := ChunkserverContainerDataDir + "/chunkfilepool"
 	argsFilePoolMetaPath := ChunkserverContainerDataDir + "/chunkfilepool.meta"
 
diff --git a/pkg/chunkserver/config.go b/pkg/chunkserver/config.go
index da4b895a..ce5a17d0 100644
--- a/pkg/chunkserver/config.go
+++ b/pkg/chunkserver/config.go
@@ -3,6 +3,7 @@ package chunkserver
 import "strconv"
 
 // chunkserverConfig for a single chunkserver
+// chunkserverConfig implements config.ConfigInterface
 type chunkserverConfig struct {
 	Prefix                        string
 	Port                          int    // chunkserver.conf(service_port)
@@ -55,7 +56,6 @@ type chunkserverDataPathMap struct {
 	ContainerLogDir string
 }
 
-// chunkserverConfig implement ConfigInterface
 func (c *chunkserverConfig) GetPrefix() string {
 	return c.Prefix
 }
@@ -121,6 +121,7 @@ func (c *chunkserverConfig) GetDataDir() string {
 }
 
 // cluster
+
 func (c *chunkserverConfig) GetClusterEtcdHttpAddr() string {
 	return ""
 }
diff --git a/pkg/chunkserver/pool.go b/pkg/chunkserver/pool.go
index 52d74691..4dc22df6 100644
--- a/pkg/chunkserver/pool.go
+++ b/pkg/chunkserver/pool.go
@@ -168,7 +168,7 @@ func (c *Cluster) createLogicalPool(logicalPool string) (LogicalPool, []Server)
 	}
 
 	// copysets
-	copysets = (int)(copysets / DEFAULT_REPLICAS_PER_COPYSET)
+	copysets = copysets / DEFAULT_REPLICAS_PER_COPYSET
 	if copysets == 0 {
 		copysets = 1
 	}
diff --git a/pkg/chunkserver/spec.go b/pkg/chunkserver/spec.go
index 923c127f..a6c38c50 100644
--- a/pkg/chunkserver/spec.go
+++ b/pkg/chunkserver/spec.go
@@ -116,7 +116,7 @@ func (c *Cluster) createCSClientConfigMap() error {
 	return nil
 }
 
-// createS3ConfigMap create s3 configmap
+// CreateS3ConfigMap creates s3 configmap
 func (c *Cluster) CreateS3ConfigMap() error {
 	s3CMTemplate, err := c.context.Clientset.CoreV1().ConfigMaps(c.namespacedName.Namespace).Get(config.S3ConfigMapTemp, metav1.GetOptions{})
 	if err != nil {
@@ -358,7 +358,7 @@ func (c *Cluster) makeCSDaemonContainer(csConfig *chunkserverConfig) v1.Containe
 	return container
 }
 
-// getChunkServerPodLabels
+// getChunkServerPodLabels returns pod labels for chunk server
 func (c *Cluster) getChunkServerPodLabels(csConfig *chunkserverConfig) map[string]string {
 	labels := make(map[string]string)
 	labels["app"] = AppName
diff --git a/pkg/chunkserver/volume.go b/pkg/chunkserver/volume.go
index f7211c29..e8d38724 100644
--- a/pkg/chunkserver/volume.go
+++ b/pkg/chunkserver/volume.go
@@ -86,7 +86,7 @@ func CSDaemonVolumes(csConfig *chunkserverConfig) []v1.Volume {
 	return vols
 }
 
-// DaemonVolumeMounts returns the pod container volume mounth used only by chunkserver
+// CSDaemonVolumeMounts returns the pod container volume mounth used only by chunkserver
 func CSDaemonVolumeMounts(csConfig *chunkserverConfig) []v1.VolumeMount {
 	mounts := []v1.VolumeMount{}
 
@@ -101,7 +101,7 @@ func CSDaemonVolumeMounts(csConfig *chunkserverConfig) []v1.VolumeMount {
 	return mounts
 }
 
-// configConfigMapVolumeAndMount Create configmap volume and volume mount for daemon chunkserver pod
+// CSConfigConfigMapVolumeAndMount creates configmap volume and volume mount for daemon chunkserver pod
 func CSConfigConfigMapVolumeAndMount(csConfig *chunkserverConfig) ([]v1.Volume, []v1.VolumeMount) {
 	vols := []v1.Volume{}
 	mounts := []v1.VolumeMount{}
@@ -185,14 +185,25 @@ func CSConfigConfigMapVolumeAndMount(csConfig *chunkserverConfig) ([]v1.Volume,
 	return vols, mounts
 }
 
-// createTopoAndToolVolumeAndMount
+// createTopoAndToolVolumeAndMount creates volumes and volumeMounts for topo and tool
 func (c *Cluster) createTopoAndToolVolumeAndMount() ([]v1.Volume, []v1.VolumeMount) {
 	vols := []v1.Volume{}
 	mounts := []v1.VolumeMount{}
 
 	// 1. Create topology configmap volume and volume mount("/curvebs/tools/conf/topology.json")
 	mode := int32(0644)
-	topoConfigMapVolSource := &v1.ConfigMapVolumeSource{LocalObjectReference: v1.LocalObjectReference{Name: config.TopoJsonConfigMapName}, Items: []v1.KeyToPath{{Key: config.TopoJsonConfigmapDataKey, Path: config.TopoJsonConfigmapDataKey, Mode: &mode}}}
+	topoConfigMapVolSource := &v1.ConfigMapVolumeSource{
+		LocalObjectReference: v1.LocalObjectReference{
+			Name: config.TopoJsonConfigMapName,
+		},
+		Items: []v1.KeyToPath{
+			{
+				Key:  config.TopoJsonConfigmapDataKey,
+				Path: config.TopoJsonConfigmapDataKey,
+				Mode: &mode,
+			},
+		},
+	}
 	topoConfigVol := v1.Volume{
 		Name: config.TopoJsonConfigMapName,
 		VolumeSource: v1.VolumeSource{
@@ -209,7 +220,18 @@ func (c *Cluster) createTopoAndToolVolumeAndMount() ([]v1.Volume, []v1.VolumeMou
 	mounts = append(mounts, topoMount)
 
 	// 2. Create tools configmap volume and volume mount("/etc/curve/tools.conf")
-	toolConfigMapVolSource := &v1.ConfigMapVolumeSource{LocalObjectReference: v1.LocalObjectReference{Name: config.ToolsConfigMapName}, Items: []v1.KeyToPath{{Key: config.ToolsConfigMapDataKey, Path: config.ToolsConfigMapDataKey, Mode: &mode}}}
+	toolConfigMapVolSource := &v1.ConfigMapVolumeSource{
+		LocalObjectReference: v1.LocalObjectReference{
+			Name: config.ToolsConfigMapName,
+		},
+		Items: []v1.KeyToPath{
+			{
+				Key:  config.ToolsConfigMapDataKey,
+				Path: config.ToolsConfigMapDataKey,
+				Mode: &mode,
+			},
+		},
+	}
 	toolConfigVol := v1.Volume{
 		Name: config.ToolsConfigMapName,
 		VolumeSource: v1.VolumeSource{
diff --git a/pkg/config/variables.go b/pkg/config/variables.go
index f047c395..ab3fcfff 100644
--- a/pkg/config/variables.go
+++ b/pkg/config/variables.go
@@ -193,9 +193,8 @@ func getValue(name string, dc ConfigInterface) string {
 	return ""
 }
 
-// ReplaceConfigVars
+// ReplaceConfigVars replaces vars in config string
 func ReplaceConfigVars(confStr string, c ConfigInterface) (string, error) {
-
 	r, err := regexp.Compile(REGEX_VARIABLE)
 	if err != nil {
 		return "", err
diff --git a/pkg/controllers/cleanup.go b/pkg/controllers/cleanup.go
index f93cc664..24f50621 100644
--- a/pkg/controllers/cleanup.go
+++ b/pkg/controllers/cleanup.go
@@ -22,7 +22,7 @@ import (
 
 const (
 	CleanupAppName                    = "curve-cleanup"
-	clusterCleanUpPolicyRetryInterval = 5 //seconds
+	clusterCleanUpPolicyRetryInterval = 5 * time.Second
 
 	dataVolumeName     = "data-cleanup-volume"
 	dataDirHostPathEnv = "CURVE_DATA_DIR_HOST_PATH"
@@ -37,7 +37,7 @@ func (c *ClusterController) startClusterCleanUp(ctx clusterd.Context, cluster *c
 
 	logger.Infof("starting clean up for cluster %q", cluster.Name)
 
-	err := c.waitForCurveDaemonCleanUp(context.TODO(), cluster, time.Duration(clusterCleanUpPolicyRetryInterval)*time.Second)
+	err := c.waitForCurveDaemonCleanUp(context.TODO(), cluster, clusterCleanUpPolicyRetryInterval)
 	if err != nil {
 		logger.Errorf("failed to wait till curve daemons are destroyed. %v", err)
 		return
diff --git a/pkg/controllers/cluster.go b/pkg/controllers/cluster.go
index be718df0..5cac8e63 100644
--- a/pkg/controllers/cluster.go
+++ b/pkg/controllers/cluster.go
@@ -70,7 +70,7 @@ func (c *cluster) reconcileCurveDaemons() error {
 	ticker := time.NewTicker(10 * time.Second)
 	defer ticker.Stop()
 	chn := make(chan bool, 1)
-	ctx, canf := context.WithTimeout(context.Background(), time.Duration(10*60*time.Second))
+	ctx, canf := context.WithTimeout(context.Background(), 10*60*time.Second)
 	defer canf()
 	k8sutil.CheckJobStatus(ctx, c.context.Clientset, ticker, chn, c.NameSpace, job.Name)
 	flag := <-chn
@@ -83,7 +83,7 @@ func (c *cluster) reconcileCurveDaemons() error {
 	if err != nil {
 		return errors.Wrap(err, "failed to create all config file template configmap")
 	}
-	logger.Info("create config template configmap successed")
+	logger.Info("create config template configmap successfully")
 
 	// 2. Start etcd cluster
 	etcds := etcd.New(c.context, c.NamespacedName, *c.Spec, c.ownerInfo, c.dataDirHostPath, c.logDirHostPath, c.confDirHostPath)
diff --git a/pkg/controllers/curvecluster_controller.go b/pkg/controllers/curvecluster_controller.go
index 89ab08d0..940156e8 100644
--- a/pkg/controllers/curvecluster_controller.go
+++ b/pkg/controllers/curvecluster_controller.go
@@ -141,7 +141,6 @@ func (r *CurveClusterReconciler) reconcileDelete(curveCluster *curvev1.CurveClus
 	if _, ok := r.ClusterController.clusterMap[curveCluster.Namespace]; ok {
 		delete(r.ClusterController.clusterMap, curveCluster.Namespace)
 	}
-
 	// Remove finalizers
 	err := r.removeFinalizer(r.Client, r.ClusterController.namespacedName, curveCluster, "")
 	if err != nil {
diff --git a/pkg/daemon/volume.go b/pkg/daemon/volume.go
index 34535ba5..0f4a058f 100644
--- a/pkg/daemon/volume.go
+++ b/pkg/daemon/volume.go
@@ -26,7 +26,7 @@ func DaemonVolumes(configMapDataKey string, configMapMountPathDir string, dataPa
 	return vols
 }
 
-// DaemonVolumeMounts returns the pod container volume mounth used by Curve daemon
+// DaemonVolumeMounts returns the pod container volumeMounts used by Curve daemon
 func DaemonVolumeMounts(configMapDataKey string, configMapMountPathDir string, dataPaths *config.DataPathMap, curConfigMapName string) []v1.VolumeMount {
 	// create configmap mount path
 	mounts := []v1.VolumeMount{}
diff --git a/pkg/k8sutil/condition.go b/pkg/k8sutil/condition.go
index 55cde867..c8e40488 100644
--- a/pkg/k8sutil/condition.go
+++ b/pkg/k8sutil/condition.go
@@ -114,6 +114,7 @@ func UpdateStatus(client client.Client, namespaceName types.NamespacedName, obj
 	if kerrors.IsNotFound(err) {
 		err = client.Update(context.Background(), obj)
 	}
+
 	if err != nil {
 		return errors.Wrapf(err, "failed to update object %q status", nsName.String())
 	}
diff --git a/pkg/k8sutil/job.go b/pkg/k8sutil/job.go
index 57adbe57..8fabc1f5 100644
--- a/pkg/k8sutil/job.go
+++ b/pkg/k8sutil/job.go
@@ -77,7 +77,7 @@ func DeleteBatchJob(ctx context.Context, clientset kubernetes.Interface, namespa
 	return nil
 }
 
-// checkJobStatus go routine to check job status
+// CheckJobStatus go routine to check job status
 func CheckJobStatus(ctx context.Context, clientSet kubernetes.Interface, ticker *time.Ticker, chn chan bool, namespace string, jobName string) {
 	for {
 		select {
@@ -95,10 +95,8 @@ func CheckJobStatus(ctx context.Context, clientSet kubernetes.Interface, ticker
 				logger.Infof("job %s has successd", job.Name)
 				chn <- true
 				return
-			} else {
-				logger.Infof("job %s is running", job.Name)
 			}
-
+			logger.Infof("job %s is running", job.Name)
 		case <-ctx.Done():
 			chn <- false
 			logger.Error("go routinue exit because check time is more than 5 mins")
diff --git a/pkg/k8sutil/readconf.go b/pkg/k8sutil/readconf.go
index 85cfdde3..64b07e3c 100644
--- a/pkg/k8sutil/readconf.go
+++ b/pkg/k8sutil/readconf.go
@@ -8,7 +8,7 @@ import (
 	"github.com/pkg/errors"
 )
 
-// ReadConfFromTemplate read config file of each daemon to map.
+// ReadConf reads config file of each daemon to map.
 func ReadConf(path string) (map[string]string, error) {
 	file, err := os.Open(path)
 	if err != nil {