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<?xml version='1.0'?>
<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
]>
<chapter id="genome-SelfTests">
<title>Self Tests</title>
<para>
To walk away with a deeper understanding than just honed copy
and paste skills when using the Cookbook, you need some
knowledge about the underlying technologies. These self tests
will access your ability to use the &PRODUCT; tooling.
</para>
<section id="genome-LVM-SelfTest">
<title>LVM</title>
<para>
<orderedlist numeration="arabic">
<listitem>
<para>
How can you find out how many
free extents are in your
available volume groups?
</para>
</listitem>
<listitem>
<para>
What command will tell you how
much free space is left on your
logical volume snapshot?
</para>
</listitem>
<listitem>
<para>
What happens if your snapshot
becomes full?
</para>
</listitem>
<listitem>
<para>
How can you determine the
origin logical volume of a
snapshot?
</para>
</listitem>
<listitem>
<para>
If your root paritition is a
single volume group that
occupies all extents on your
only volume group. How can you
free up space for creating
other logical volumes / volume
groups?
</para>
</listitem>
<listitem>
<para>
If you are using LVM to back a
Xen guest why does simply
growing the logical volume not
give your guest more disk
space?
</para>
</listitem>
<listitem>
<para>
If your volume groups or
logical volumes are not showing
up at their appropriate device
mount points under
<filename>/dev</filename>, what
command(s) can you run to
create the necessary device
nodes? (Useful for working with
LVM in rescue mode)
</para>
</listitem>
</orderedlist>
</para>
</section>
<section id="genome-Xen-SelfTest">
<title>Xen</title>
<para>
<orderedlist numeration="arabic">
<listitem>
<para>
How can you make your Xen
guests start at boot time?
</para>
</listitem>
<listitem>
<para>
Explain the relationship
between the Dom0 (or Domain-0)
and the DomU.
</para>
</listitem>
<listitem>
<para>
From a user's point of view,
what are the main differences
between using
para-virtualization and
hardware assisted
virtualization?
</para>
</listitem>
<listitem>
<para>
What is the name of the library
that both xm and virsh use?
</para>
</listitem>
<listitem>
<para>
What service must be running
for this library to make
hypercalls? (When you figure it
out, temporarily shut it off
and try running +virt-install+)
</para>
</listitem>
<listitem>
<para>
Where does virt-install create
its guest configuration files?
</para>
</listitem>
<listitem>
<para>
How can you completely delete a
guest from the command line?
(Say, if you created it
originally with virt-manager).
</para>
</listitem>
<listitem>
<para>
When you are running Xen's
default bridged network what is
the default name for your real
ethernet device?
</para>
</listitem>
<listitem>
<para>
What will the affect be on your
guests when running a Xen host
without network connectivity?
Why?
</para>
</listitem>
<listitem>
<para>
Give a highlevel explaination
of the difference between a
bridged and a routed network.
</para>
</listitem>
<listitem>
<para>
If you wanted to use NAT
instead of the default bridged
network setup what config file
would you edit?
</para>
</listitem>
</orderedlist>
</para>
</section>
<section id="genome-Git-SelfTest">
<title>Git</title>
<para>
<orderedlist numeration="arabic">
<listitem>
<para>
Name a command that is not safe
to run while other people are
using your repo.
</para>
</listitem>
<listitem>
<para>
Say you just made a bad commit
on your private branch, how can
you fix it?
</para>
</listitem>
<listitem>
<para>
What does git pull do under the
covers? How is that different
than +git fetch+?
</para>
</listitem>
<listitem>
<para>
What is a bare repo? How can
you convert a working repo into
a bare one?
</para>
</listitem>
<listitem>
<para>
How many bytes does it take to
create a new branch?
</para>
</listitem>
<listitem>
<para>
What do the commit SHA1 sums
represent?
</para>
</listitem>
<listitem>
<para>
What is unique about cloning a
repo to a location on the same
filesystem?
</para>
</listitem>
<listitem>
<para>
What is the danger in using git
rebase on a public branch?
</para>
</listitem>
<listitem>
<para>
How can you erase all traces of
a bad commit on your private
branch?
</para>
</listitem>
<listitem>
<para>
How can you checkout the state
of your current branch 6
commits ago?
</para>
</listitem>
</orderedlist>
</para>
</section>
</chapter>
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