Lamar Owen writes:
> In the environment of the general purpose OS upgrade, the RPM's
> installation scripts cannot fire up a backend, nor can it assume one
> is running or is not running, nor can the RPM installation scripts
> fathom from the run-time environment whether they are being run from a
> command line or from the OS upgrade (except on Linux Mandrake, which
> allows such usage).
I don't understand why this is so. It seems perfectly possible that some
%preremovebeforeupdate starts a postmaster, runs pg_dumpall, saves the
file somewhere, then the %postinstallafterupdate runs the inverse
operation. Disk space is not a valid objection, you'll never get away
without 2x storage. Security is not a problem either. Are you not
upgrading in proper dependency order or what? Everybody does dump,
remove, install, undump; so can the RPMs.
Okay, so it's not as great as a new KDE starting up and asking "may I
update your configuration files?", but understand that the storage format
is optimized for performance, not easy processing by external tools or
something like that.
--
Peter Eisentraut peter_e@gmx.net http://yi.org/peter-e/
