How hypervisors like proxmox manage vms (kvm) and cts (lxc)?

[dominikp]

Proxmox uses kvm and lxc, but AFAIK does not relies on libvirt or virsh. So how exactly does it? Is it a wrapper for commands like eg. 'virt-install' which parses their results? Or does it use some low level C/C++ library?

Yes, im fully aware that i will never be able to code anything nearly complicated as hypervisor but yet Im really curious about it.

 

[czechsys]

It's based on Qemu.

 

[LnxBil]

Or does it use some low level C/C++ library?

It's based on a set of Perl libraries that manage the underlying kvm/qemu and LXC stuff. You can inspect the sourcecode here.

 

[fabian]

like the previous posters said - we use LXC and Qemu directly (libvirt does the same, but there is no shared code between the two). on the Qemu side we also have patches for features that are missing - mainly regarding our two backup stacks (VMA and PBS).