[389-devel] Please review: auto upgrade during rpm posttrans

[Rich Megginson]

It is a problem that upgrade is not run automatically during rpm 
installation.  It causes problems for other packages that depend on 
389.  This fix allows rpm to run the upgrade script.  Some notes:
* had to write scriptlets in lua to allow data to be passed among 
different phases - %posttrans does not know if it is being run as a 
fresh install or an upgrade, so we have to get that information from 
%post to pass to %posttrans
* upgrade must be run in posttrans - in %post, the old package that is 
being upgraded will still be around - this includes the old schema in 
the schema dir - the update script assumes the contents of the schema 
dir are correct and current - so we have to wait until %posttrans when 
the schema dir will contain only the new schema
* the upgrade script can only run non-interactively if the servers are 
all shutdown first - so we have to shutdown the servers, run the 
upgrade, then start the servers back up - however, if the user did not 
want certain servers to be running, we first get a list of the running 
servers, and only start those back up after the upgrade

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