Starting an existing machines with podman preset will return an error

- return deprecation error when the user tries to start an existing machine with podman preset

pkg/crc/machine/bundle/metadata.go

@@ -196,6 +196,10 @@ func (bundle *CrcBundleInfo) IsMicroshift() bool {
 	return bundle.GetBundleType() == crcPreset.Microshift
 }
 
+func (bundle *CrcBundleInfo) IsPodman() bool {
+	return bundle.GetBundleType() == crcPreset.Podman
+}
+
 func (bundle *CrcBundleInfo) verify() error {
 	files := []string{
 		bundle.GetSSHKeyPath(),

pkg/crc/machine/start.go

@@ -340,6 +340,10 @@ func (client *client) Start(ctx context.Context, startConfig types.StartConfig)
 	}
 	defer vm.Close()
 
+	// Return with an error redirecting user to use podman machine instead
+	if vm.bundle.IsPodman() {
+		return &types.StartResult{}, fmt.Errorf("error: %s", crcPreset.PodmanDeprecatedWarning)
+	}
 	currentBundleName := vm.bundle.GetBundleName()
 	if currentBundleName != bundleName {
 		logging.Debugf("Bundle '%s' was requested, but the existing VM is using '%s'",
@@ -679,6 +683,9 @@ func (client *client) IsRunning() (bool, error) {
 }
 
 func (client *client) validateStartConfig(startConfig types.StartConfig) error {
+	if startConfig.Preset == crcPreset.Podman {
+		return fmt.Errorf(crcPreset.PodmanDeprecatedWarning)
+	}
 	if client.monitoringEnabled() && startConfig.Memory < minimumMemoryForMonitoring {
 		return fmt.Errorf("Too little memory (%s) allocated to the virtual machine to start the monitoring stack, %s is the minimum",
 			units.BytesSize(float64(startConfig.Memory)*1024*1024),

pkg/crc/preset/preset.go

@@ -21,6 +21,11 @@ var presetMap = map[Preset]string{
 	Microshift: string(Microshift),
 }
 
+const (
+	PodmanDeprecatedWarning = "The Podman preset is deprecated and will be removed in a future release. Consider" +
+		" rather using a Podman Machine managed by Podman Desktop: https://podman-desktop.io"
+)
+
 func AllPresets() []Preset {
 	var keys []Preset
 	for k := range presetMap {
@@ -52,6 +57,9 @@ func (preset Preset) ForDisplay() string {
 }
 
 func ParsePresetE(input string) (Preset, error) {
+	if string(Podman) == input {
+		return Podman, fmt.Errorf(PodmanDeprecatedWarning)
+	}
 	for pSet, pString := range presetMap {
 		if pString == input {
 			return pSet, nil
@@ -62,7 +70,7 @@ func ParsePresetE(input string) (Preset, error) {
 }
 func ParsePreset(input string) Preset {
 	preset, err := ParsePresetE(input)
-	if err != nil {
+	if err != nil && preset != Podman {
 		logging.Errorf("unexpected preset mode %s, using default", input)
 		return OpenShift
 	}