Bug#931130: Document that local configuration for dummy and bonding modules are getting overwritten by systemd

[Michael Biebl]

Am 29.06.2019 um 19:52 schrieb Justin B Rye:
> diff --git a/en/issues.dbk b/en/issues.dbk
> index 2edb9838..bf007277 100644
> --- a/en/issues.dbk
> +++ b/en/issues.dbk
> @@ -203,33 +203,28 @@ $ sudo update-initramfs -u
>      <!-- stretch to buster -->
>      <title>Module configuration for bonding and dummy interfaces</title>
>      <para>
> -      Administrators who are using channel bonding and/or dummy
> -      interfaces (for instance to configure a machine as a router), and
> -      who have set up module parameters in a file under
> -      <filename>/etc/modprobe.d</filename>, may need to change the name
> -      of the local configuration file used, to avoid these parameters
> -      being ignored after the upgrade to buster.
> -    </para>
> -    <para>
> -      In buster, <systemitem role="package">udev</systemitem> ships a
> -      file <filename>/lib/modprobe.d/systemd.conf</filename> designed to
> -      make it easier to configure such interfaces using
> -      <command>systemd-networkd</command>. This contains the lines
> +      Systems using channel bonding and/or dummy interfaces, for instance to
> +      configure a machine as a router, may encounter problems upgrading to buster.
> +      New versions of <systemitem role="package">systemd</systemitem> install a
> +      file <filename>/lib/modprobe.d/systemd.conf</filename> (intended to
> +      simplify configuration via <command>systemd-networkd</command>) which
> +      contains the lines
>      </para>
>      <screen>
>   options bonding max_bonds=0
>   options dummy numdummies=0
>      </screen>
>      <para>
> -     A file in <filename>/lib/modprobe.d</filename> can be overridden by
> -     one with the same name under <filename>/etc/modprobe.d</filename>,
> -     but the names are processed in alphabetical order, so
> -     <filename>/lib/modprobe.d/systemd.conf</filename> follows and
> -     overrides (for instance)
> -     <filename>/etc/modprobe.d/dummy.conf</filename>. Make sure that any
> -     local configuration file has a name that sorts after
> -     <quote><filename>systemd.conf</filename></quote>, such as
> -     <quote><filename>/etc/modprobe.d/zz-local.conf</filename></quote>.
> +      Admins who were depending on different values will need to ensure they are
> +      set in the correct way to take precedence. A file in
> +      <filename>/etc/modprobe.d</filename> will override one with the same name
> +      under <filename>/lib/modprobe.d</filename>, but the names are
> +      processed in alphabetical order, so
> +      <filename>/lib/modprobe.d/systemd.conf</filename> follows and overrides
> +      (for instance) <filename>/etc/modprobe.d/dummy.conf</filename>. Make sure
> +      that any local configuration file has a name that sorts after
> +      <quote><filename>systemd.conf</filename></quote>, such as
> +      <quote><filename>/etc/modprobe.d/zz-local.conf</filename></quote>.
>      </para>
>    </section>

lgtm, fwiw.

Thanks Justin.

-- 
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

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