>mario heimel wrote: >> hello gerald, >> >> again my question: can you explain why you don't want a "downgrade" >> of a zone ? the process of "remove the obsolete versions of those >> pkgs and install the up-to-date version from the pkg data spooled in >> the global zone" should also be usable for the downgrade path or is >> this impossible ? >> >> the ability to bring the zone pkgs in sync with the versions from the >> new host and allow a safe attach, independent of a "mixed version >> state" would be a great flexibility in zone migration. > >We don't generally provide downgrade for Solaris at all; generally the >current packages are not designed to go backwards in time, as it's not a >requirement for the product, thus the scripts included in most packages >will in many cases have fatal flaws if presented with an environment >that breaks this basic assumption. It's possible that at some point >this could be done, but it's a much bigger problem than Jerry's proposal.
The installer is also by and large separate from the packages and it has additional knowledge; as it is created at a moment in time where the future releases do not exist, it cannot know the future and can only know and deal with the past. Casper
