fix volume in initContainer

Signed-off-by: zwwhdls <[email protected]>

pkg/juicefs/mount/builder/pod.go

@@ -54,8 +54,9 @@ func (r *PodBuilder) NewMountPod(podName string) *corev1.Pod {
 
 	// generate initContainer
 	if r.jfsSetting.FormatCmd != "" {
+		initVolumeMounts := r.genInitVolumes()
 		initContainer := r.genInitContainer()
-		initContainer.VolumeMounts = append(initContainer.VolumeMounts, volumeMounts...)
+		initContainer.VolumeMounts = append(initContainer.VolumeMounts, initVolumeMounts...)
 		pod.Spec.InitContainers = []corev1.Container{initContainer}
 	}
 
@@ -243,6 +244,22 @@ func (r *PodBuilder) genPodVolumes() ([]corev1.Volume, []corev1.VolumeMount) {
 	return volumes, volumeMounts
 }
 
+// genInitVolumes: generate volumes for initContainer in mount pod
+// jfs config dir: mount jfs config dir as emptyDir to deliver config file to initContainer
+func (r *PodBuilder) genInitVolumes() []corev1.VolumeMount {
+	volumeMounts := []corev1.VolumeMount{}
+
+	if r.jfsSetting.FormatCmd != "" {
+		// initContainer will generate xx.conf to share with mount container
+		volumeMounts = append(volumeMounts, corev1.VolumeMount{
+			Name:      JfsRootDirName,
+			MountPath: "/root/.juicefs",
+		})
+	}
+
+	return volumeMounts
+}
+
 // genCleanCachePod: generate pod to clean cache in host
 func (r *PodBuilder) genCleanCachePod() *corev1.Pod {
 	volumeMountPrefix := "/var/jfsCache"