On Wed, 2008-04-02 at 06:39 +1100, David Timms wrote: > Tim Lauridsen wrote: > > The mayor problem with roleback is that you can't reverse the changes > > done by scriptlets in RPM, so it is not posible to do downgrade in a > > safeway. > > > > EX. > > > > rpm -ivh foo > > rpm -e foo > > > > these commands add a package and remove it again. > > the state of the system might not be the same before and after these > > commands, so a safe rollback is not possible. > > Further to what Alastair says later in the thread: > what if a yum plugin stored the information about what a script file > actions looked like before/after the rpm install modified a file ? > > yum install foo > [foo renamed /etc/foo.cfg to /etc/foo.cfg.rpmold: versioned at ...] > [foo created /etc/foo.cfg: versioned at /var/cache/rollback/...] > > I guess that is a bit simplified; it's not just config files that can > get modified in scriptlets. Perhaps you could version the /etc/ folder > and commit any change after each yum transaction ? it's not just /etc think about updates like: mysql4 -> mysql5 you have to roll back the db versions and NOT roll back the data. there is deep doom down these lines. -sv _______________________________________________ Yum mailing list Yum@xxxxxxxxxxxxxxxxxxxx https://lists.dulug.duke.edu/mailman/listinfo/yum
