Only migrate during update

fedora/SPECS/polemarch.spec

@@ -14,7 +14,7 @@
 %define user polemarch
 %define datad poledata
 %define version 1.1.0
-%define release 0
+%define release 1
 %define __prelink_undo_cmd %{nil}
 %define _binaries_in_noarch_packages_terminate_build   0
 %define unmangled_version %{version}
@@ -74,7 +74,10 @@ exit 0
 
 %post
 %systemd_post %{name}.service
+# only migrate, if it is an update, at first installation, no database is available
+if [ $2 -eq 1 ]; then
 su - %{user} -c "/opt/%{name}/bin/%{shortname}ctl migrate"
+fi
 
 %preun
 %systemd_preun %{name}.service