move Filesystem config validation to vfs

utils/errors.go

@@ -0,0 +1,20 @@
+package utils
+
+import "fmt"
+
+// ValidationError raised if input data is not valid
+type ValidationError struct {
+	err string
+}
+
+// Validation error details
+func (e *ValidationError) Error() string {
+	return fmt.Sprintf("Validation error: %s", e.err)
+}
+
+// NewValidationError returns a validation errors
+func NewValidationError(error string) *ValidationError {
+	return &ValidationError{
+		err: error,
+	}
+}