修复节点状态监控中磁盘空间可能为0的问题

internal/nodes/node_status_executor.go

@@ -137,8 +137,8 @@ func (this *NodeStatusExecutor) updateDisk(status *nodeconfigs.NodeStatus) {
 	})
 
 	// 当前TeaWeb所在的fs
-	rootFS := ""
-	rootTotal := uint64(0)
+	var rootFS = ""
+	var rootTotal = uint64(0)
 	if lists.ContainsString([]string{"darwin", "linux", "freebsd"}, runtime.GOOS) {
 		for _, p := range partitions {
 			if p.Mountpoint == "/" {
@@ -152,9 +152,9 @@ func (this *NodeStatusExecutor) updateDisk(status *nodeconfigs.NodeStatus) {
 		}
 	}
 
-	total := rootTotal
-	totalUsage := uint64(0)
-	maxUsage := float64(0)
+	var total = rootTotal
+	var totalUsage = uint64(0)
+	var maxUsage = float64(0)
 	for _, partition := range partitions {
 		if runtime.GOOS != "windows" && !strings.Contains(partition.Device, "/") && !strings.Contains(partition.Device, "\\") {
 			continue
@@ -180,6 +180,8 @@ func (this *NodeStatusExecutor) updateDisk(status *nodeconfigs.NodeStatus) {
 		}
 	}
 	status.DiskTotal = total
+	if total > 0 {
 		status.DiskUsage = float64(totalUsage) / float64(total)
+	}
 	status.DiskMaxUsage = maxUsage / 100
 }