Michal Hlavinka wrote:
Correct approach would be to save state before installation of new
version starts and start dovecot (if flag is set) after old version is
removed - that would mean %postun script. This does not seem to work on
reinstall (the same version is installed) - %postun script is not executed.
Please also consider what happens when the new version of Dovecot requires a
new version of some library. RPM will ensure that both packages are updated in
the same transaction, but if I understand correctly it's not until %posttrans
that you can be sure that the new library is in place.
Björn Persson