Installing an OS with an ISO using Ganeti

Here’s a quick guide on how to do a manual OS install using an ISO image.

This is a work in progress...

Disable kvm_clock

There’s currently a bug in KVM to where migrations lock up the guest if it is using the kvm_clock. To work around this issue, you need to tell the kernel to use a different clock at boot time. You can also change this at runtime but this will ensure its a permanent change.


On debian, open up /boot/grub/menu.lst and edit the following line while the guest is running:

kargs root=/dev/vda2 ro clocksource=tsc

Now update the grub config by running update-grub.