On Tue, 2011-08-02 at 13:37 +0100, Richard W.M. Jones wrote:
> Below are two packages. The first one is installed, the second one is
> built for Koji. Yum refuses to upgrade the installed package to the
> second one, saying:
>
> Examining qemu-0.15.0-0.2.2011072859fadcc.fc17.x86_64.rpm: 2:qemu-0.15.0-0.2.2011072859fadcc.fc17.x86_64
> qemu-0.15.0-0.2.2011072859fadcc.fc17.x86_64.rpm: does not update installed package.
>
> But I don't understand why, since it seems clear that the second
> package has a higher release than the first package.
The version comparison method of RPM is a bit quirky and non-obvious: It
separates elements at dots (obvious) but also at changes between digits
and other characters (non-obvious). Let's look at only the releases of
the two packages:
0.2.20110718525e3df.fc16
0.2.2011072859fadcc.fc17
Split up into the elements that RPM compares, these are:
0, 2, 20110718525, e, 3, df, fc, 16
0, 2, 2011072859, fadcc, fc, 17
^^^^^^^^^^^^
The third elements cause this evr-comparison to have a result which you
don't expect. Bump the second element "2" to "3" and you should be
fine :-).
BTW, rpmdev-vercmp lets you compare arbitrary [e:]v[-r] combinations on
the command line without having to have the affected packages handy.
Nils
--
Nils Philippsen "Those who would give up Essential Liberty to purchase
Red Hat a little Temporary Safety, deserve neither Liberty
nils@xxxxxxxxxx nor Safety." -- Benjamin Franklin, 1759
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