In my case, the %pre only does a pre-condition check. Nothing else. A single RPM is being installed. Do I still need the rollback procedure? --- James Olin Oden <james.oden@xxxxxxxxx> wrote: > On 10/2/06, John Runyan <johnrunyan1@xxxxxxxxx> > wrote: > > How do you stop RPM installation in the %pre > section? > > It shouldn't require the rollback procedure you > sent a > > link to, James, should it? > It absolutely does require that. The reason is > multi-faceted: > > - Pre-scripts can do things. They do not have > the same semanic as a solaris > verify script which is only used to check for > pre-conditions. > - Pre-scripts are not all ran at the begining of > the transaction, > but as each installed > package goes through the package state machine > (PSM) its > pre-scriplet is ran such > that the system has necessarily been changes by > the packages than > ran before it > in the transaction. > - scriptlets are opaque to RPM, so there is no > way to tell if a > script has changed the > system or not. > > When you stack these up you get that at the time of > a %pre scriptlet > failure the system could have been changed, > therefore the transaction > should be rolled back to bring the system back to > the original state. > Note, the therefore is based my environments rule of > rolling back > failed transactions. One could have alternate > policies. > > Also, another thing to consider that my article does > not discuss, is > that sometimes an "upgrade" of a system requires > multiple transactions > (at least if you are using the rpm cli). For > instance, you might > have one transaction with kernels and kernel modules > that were > installed, and then another with other packages that > were upgraded. > By the rules in my enviorment if a %pre failed in > the second > transaction, then you would want to roll back that > transaction and the > previous one. That is what the --arbgoal switch is > about (which is > not documented), which allow you to specify a roll > back goal to use in > the event of a failure. > > Cheers...james > > _______________________________________________ > Rpm-list mailing list > Rpm-list@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/rpm-list > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _______________________________________________ Rpm-list mailing list Rpm-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/rpm-list
