fix

Signed-off-by: v.oleynikov <vasily.oleynikov@flant.com>

images/webhooks/src/validators/storageClassUpdate.go

@@ -18,7 +18,7 @@ package validators
 
 import (
 	"context"
-	"fmt"
+	"errors"
 	"webhooks/v1alpha1"
 
 	"github.com/slok/kubewebhook/v2/pkg/model"
@@ -33,8 +33,18 @@ func StorageClassUpdate(ctx context.Context, _ *model.AdmissionReview, obj metav
 		return &kwhmutating.MutatorResult{}, nil
 	}
 
+	thickExists := false
+	thinExists := false
 	for _, lvmGroup := range sc.Spec.LVM.LVMVolumeGroups {
-		fmt.Printf("#%v", lvmGroup)
+		if lvmGroup.Thin == nil {
+			thickExists = true
+		} else {
+			thinExists = true
+		}
+	}
+
+	if thickExists == true && thinExists == true {
+		return &kwhmutating.MutatorResult{}, errors.New("There must be only thin or thick pools simultaneously")
 	}
 
 	return &kwhmutating.MutatorResult{