Re: questions on package management

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Kevin Fenzi <kevin@xxxxxxxxx> writes:

> On Sat, 13 Jul 2013 16:27:52 +0200
> lee <lee@xxxxxxxxxxxxxxx> wrote:
>
>> Yes, this situation was the result of an upgrade that didn't finish.
>> Are you saying that 'yum list installed' doesn't really tell you what
>> is actually installed and you need to use 'rpm -V' instead?
>> 
>> What are these placeholders?
>
> When rpm does an upgrade of a package it goes thru a number of steps. 
> It gets a transaction from yum, it checks it to make sure it would
> run ok, then it runs it, during that it installs the new package(s)
> runs any scriptlets, then once all new packages are installed, it
> goes and removes the old packages from the database. 
>
> Often when a transaction gets messed up in the middle, it doesn't get
> to the very end part where it removes the no longer installed package
> from the rpmdb. So, rpm then shows you have 'foo1' and 'foo2' both
> installed, but foo1 really has already been replaced, just it's
> database entry didn't get cleaned up. You can find this with 'rpm -V'
> because 'rpm -V foo2' will show no problems and 'rpm -V foo1' will
> show lots of changes (since foo1 is not really installed). 

Oh I see -- thank you for the good explanation!

>> prelink: /usr/bin/cjet: at least one of file's dependencies has
>> changed since prelinking
>> 
>> Pre-linking it again should fix that?
>
> Yes. 

Cool, then I don't have any problems with packages, as far as I can
tell :)


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