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add arch linux instructions to stupid_kvm_tricks

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Trent Palmer
2018-02-13 04:50:57 -08:00
parent 1721d26e54
commit 27a11c0656
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@ -148,6 +148,8 @@
<li><a class="toctree-l3" href="#virt-install-ubuntu1604">virt-install ubuntu16.04</a></li>
<li><a class="toctree-l3" href="#virt-install-arch-linux">virt-install Arch Linux</a></li>
<li><a class="toctree-l3" href="#change-the-network-interface">Change the Network Interface</a></li>
<li><a class="toctree-l3" href="#clone-the-vm">Clone the VM</a></li>
@ -219,6 +221,51 @@
--extra-args 'console=ttyS0,115200n8 serial'
</code></pre>
<h2 id="virt-install-arch-linux">virt-install Arch Linux</h2>
<p>The <code>--extra-args</code> option lets you use a serial console. But the
<code>--extra-args</code> option only works if you also use an <code>--location</code>
option. But the <code>--location</code> option can only be used with certain isos.
So use <code>--cdrom</code> instead of <code>--location</code>, drop the <code>--extra-args</code>,
and instruct the kernel to boot with a serial console with a parameter
at the boot splash screen.</p>
<pre><code class="bash">qemu-img create -f qcow2 /var/lib/libvirt/images/arch.qcow2 20G
virt-install --name arch --ram 4096 \
--disk path=/var/lib/libvirt/images/arch.qcow2,size=20 \
--vcpus 2 \
--os-type linux \
--os-variant ubuntu16.04 \
--network bridge=virbr0 \
--graphics none \
--console pty,target_type=serial \
--cdrom /var/lib/libvirt/images/archlinux-2018.02.01-x86_64.iso
</code></pre>
<p>the arch boot splash screen will appear in your terminal and you can
tap the "tab" key to edit boot parameters</p>
<p>add "console=ttyS0" to kernel command line parameters</p>
<p>before</p>
<pre><code class="bash">&gt; .linux boot/x86_64/vmlinuz archisobasedir=arch archisolabel=ARCH_201802 initrd=boot/intel_ucode.img,boot/x86_64/archiso.img
</code></pre>
<p>after</p>
<pre><code class="bash">&gt; .linux boot/x86_64/vmlinuz archisobasedir=arch archisolabel=ARCH_201802 initrd=boot/intel_ucode.img,boot/x86_64/archiso.img console=ttyS0
</code></pre>
<pre><code class="bash">
arch boots ...
...
...
...
root@archiso ~ # lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 432M 1 loop /run/archiso/sfs/airootfs
sr0 11:0 1 539M 0 rom /run/archiso/bootmnt
vda 254:0 0 20G 0 disk
root@archiso ~ #
</code></pre>
<h2 id="change-the-network-interface">Change the Network Interface</h2>
<p>br0 gets addresses from the network router, but what if you want
your vm to have be on the virbr0 192.168.122.0/24 subnet?</p>