>>> Messages generated by process 558 on 2012-12-08 17:10:29 VOLT for package sys-apps/coreutils-8.20:

WARN: postinst
Make sure you run 'hash -r' in your active shells.
You should also re-source your shell settings for LS_COLORS
  changes, such as: source /etc/profile

>>> Messages generated by process 558 on 2012-12-08 17:12:52 VOLT for package sys-apps/util-linux-2.22.1:

LOG: postinst
The agetty util now clears the terminal by default.  You
might want to add --noclear to your /etc/inittab lines.

>>> Messages generated by process 558 on 2012-12-08 17:13:33 VOLT for package sys-apps/openrc-0.11.7:

WARN: postinst
In this version of OpenRC, the loopback interface no longer
satisfies the net virtual.
If you have services now which do not start because of this,
They can be fixed by adding rc_need="!net"
to the /etc/conf.d/<servicename> file.
You should also file a bug against the service asking that
need net be dropped from the dependencies.
The bug you file should block the following tracker:
https://bugs.gentoo.org/show_bug.cgi?id=439092
This version of OpenRC doesn't enable nfs mounts automatically any
longer. In order to mount nfs file systems, you must use the
nfsmount service from the nfs-utils package.
See bug https://bugs.gentoo.org/show_bug.cgi?id=427996 for
more information on this.
LOG: postinst
You should now update all files in /etc, using etc-update
or equivalent before restarting any services or this host.

Please read the migration guide available at:
http://www.gentoo.org/doc/en/openrc-migration.xml