Convert Qemu to KVM

[yamamushi]

We need to switch the qemu instance to run with kvm:

https://github.com/hooklift/node-libvirt

The keymap will need to be updated.

We will need to become familiar with virsh

http://askaralikhan.blogspot.com/2011/01/creating-kvm-guests-using-virsh-tool.html

[ccmolik]

the kvm bits are installed on the hypervisor. using https://libvirt.org/drvqemu.html#xmlimport i imported the qemu args.

to see the vm's definition: (ALL COMMANDS NEED TO BE RUN AS ROOT.)

# virsh dumpxml twitchintheshell

to launch the vm:

# virsh start twitchintheshell

to acpi shutdown the vm:

# virsh shutdown twitchintheshell

to hard shutdown the vm:

# virsh destroy twitchintheshell

to reboot the vm:

# virsh reboot twitchintheshell

The VM will not currently come up at boot if the box restarts. we can fix that easily.

[ccmolik]

To test this, this may be a good idea:

# virsh edit twitchintheshell

And then edit the XML to point to a different image for the hard drive. This lets you test without everything being blown up.

We'll need to update the client code to call libvirt directly (or virsh commands listed above) before rolling this out.

[ccmolik]

In this case, the domain name is 'twitchintheshell' for node.js bindings.

[jhass]

Shouldn't a recent QEMU and -enable-kvm to the launch command be enough?

[ccmolik]

Though launching it with qemu --enable-kvm will accomplish perf
improvements, not launching through libvirt / virsh seems to make it so
libvirt has no sense on the state of the VM (the qemu process) so other
libvirt tools / libraries cannot be used to manage the VM. There were
rumblings about trying to use node-libvirt to directly control the VM.

On Thu, Nov 5, 2015 at 2:16 PM, Jonne Haß notifications@github.com wrote:

Shouldn't a recent QEMU and -enable-kvm to the launch command be enough?

—
Reply to this email directly or view it on GitHub
#15 (comment)
.

[jhass]

So -enable-kvm should bring direct improvements for the current setup, we can always switch to libvirt later, no?

[yamamushi]

@jhass will enabling that require us to rewrite our input system?

[jhass]

not from my local tests

[yamamushi]

Then we should enable that now, I'll make a pr