[elrepo] Update dependecy error

[Georgios Papaioannou]

Yes I am on latest Centos 7.8. Makes totally sense, thank you very much for the valuable information Phil.

________________________________
From: elrepo-bounces at lists.elrepo.org <elrepo-bounces at lists.elrepo.org> on behalf of Phil Perry <phil at elrepo.org>
Sent: 19 June 2020 13:39
To: elrepo at lists.elrepo.org <elrepo at lists.elrepo.org>
Subject: Re: [elrepo] Update dependecy error

On 19/06/2020 11:08, Georgios Papaioannou wrote:
> Hello everyone,
>
> I am getting the following message at yum update on Centos:
>
> /[elrepo]: 90 kmod packages excluded due to dependency errors
> /
> /
> /
> Can anyone help me resolve this? Is this a general Centos dependency
> error or something related to elrerpo?
>
> Thank you.
>
> Georgios
>

Hi Georgios,

That message is for information only. If you run yum with '-d 3' to
increase the debug verbosity you will see the list of packages that have
been excluded.

The message comes from the yum-plugin-elrepo package. The purpose of the
package is to exclude elrepo kmod packages from yum where there are
dependency issues. Each kmod package is built against a specific kernel
and will be compatible with a series of kernels. If a compatible kernel
isn't instaled or available to install, trying to update that package
will cause yum to fail with a dependency error. So rather than have yum
fail, the plugin excludes those packages.

This often happens for CentOS users between point releases when CentOS
lags behind RHEL. For example, if a kmod package gets rebuild for
rhel-7.8 and is dependent on the rhel-7.8 kernel, CentOS users who are
still on 7.7 would get dependency errors every time they run yum update
because the kmod package they are trying to update requires a kernel
that is not yet available. This is the issue the plugin fixes. Once your
system is fully updated, you should not see any excluded packages.

In your case, with 90 kmod packages excluded, I'm assuming you are a
CentOS user. The reason the package count is so high is that CentOS
repos are configured such that you only have the most recent point
release series kernels available to yum, so all the older packages in
the repo which were built against older kernels (pre 7.8) have failed
dependencies as their respective kernels are missing. You can resolve
this (and make your CentOS install behave more like RHEL) by enabling
the vault repo which you fix the dependency issues causing the package
exclusions, but it's not critical. See this bug:

https://bugs.centos.org/view.php?id=15476

With CentOS vault enabled (or on RHEL), you should not see any package
exclusions on a fully updated system.

Hope that makes sense.

Phil
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