[libvirt] new openvz driver (bossonvz)

[Bosson VZ]

Hello,

in the company I work for, we use openvz and qemu/kvm on our clusters side-by-side. To manage our domains, we used libvirt/qemu for qemu/kvm domains and vz tools for openvz domains in the past. This was very inconvinient since the management differed in many ways. So we have decided to unify our management and use libvirt exclusively. Since the openvz driver already included in libvirt lacks features that need, we have implemented a new libvirt backend driver for openvz called the bossonvz driver.

Unlike the openvz driver, bossonvz is a complete, feature-rich stateful libvirt driver. It uses the libvirt driver API exclusively and communicates with the kernel directly, much like the LXC driver. The code is hugely inspired by the LXC driver and the Qemu driver, but adds a bit of functionality to the libvirt core too. More details and the source code can be found at

http://bossonvz.bosson.eu/

The driver is completely independent of vz tools, it needs only a running vz kernel. One of the things, we are most proud of, is the possibility to access the domain's tty via VNC (hurray to uniform management web interfaces).

Since the code was developed in-house (primarily for internal purposes), it is based on an older libvirt release (1.1.2). There are also some modifications to the libvirt core (virCommand) and the domain file (mount options syntax) which might need some redesign.

At the moment I would like to get some feedback on the driver. In the future, I would like to see the driver merged upstream, and am prepared to do the work but I need to know if there is any interest in doing so.

-- 
Cluster Design, s.r.o.
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