fix(host): enable qemu log (#13278)

pkg/hostman/guestman/qemu-kvmhelper.go

@@ -368,6 +368,11 @@ function nic_mtu() {
 		input.EnableNested = guestManager.GetHost().IsNestedVirtualization()
 	}
 
+	if options.HostOptions.LogLevel == "debug" {
+		input.EnableLog = true
+		input.LogPath = s.getQemuLogPath()
+	}
+
 	// inject monitor
 	input.HMPMonitor = &qemu.Monitor{
 		Id:   "hmqmon",

pkg/hostman/guestman/qemu/generate.go

@@ -58,6 +58,8 @@ type GenerateStartOptionsInput struct {
 	VNCPort               uint
 	VNCPassword           bool
 	IsolatedDevicesParams *isolated_device.QemuParams
+	EnableLog             bool
+	LogPath               string
 	HMPMonitor            *Monitor
 	QMPMonitor            *Monitor
 	IsVdiSpice            bool
@@ -98,6 +100,10 @@ func GenerateStartOptions(
 
 	opts = append(opts, cpuOpt)
 
+	if input.EnableLog {
+		opts = append(opts, drvOpt.Log(input.EnableLog, input.LogPath))
+	}
+
 	// TODO hmp - -
 	opts = append(opts, getMonitorOptions(drvOpt, input.HMPMonitor)...)
 	if input.QMPMonitor != nil {