Re: [libvirt] Notes from the KVM Forum relevant to libvirt

On Tue, Aug 23, 2011 at 12:15 PM, Daniel P. Berrange <berrange(a)redhat.com&gt; wrote: > I was at the KVM Forum / LinuxCon last week and there were many > interesting things discussed which are relevant to ongoing libvirt > development. Here was the list that caught my attention. If I have > missed any, fill in the gaps.... > >  - Sandbox/container KVM.  The Solaris port of KVM puts QEMU inside >   a zone so that an exploit of QEMU can't escape into the full OS. >   Containers are Linux's parallel of Zones, and while not nearly as >   secure yet, it would still be worth using more containers support >   to confine QEMU. Can you elaborate on why Linux containers are "not nearly as secure" [as Solaris Zones]?

>  - Native KVM tool. The problem statement was that the QEMU code is too >   big/complex & and command line args are too complex, so lets rewrite >   from scratch to make the code small & CLI simple. They achieve this, >   but of course primarily because they lack so many features compared >   to QEMU. They had libvirt support as a bullet point on their preso, >   but I'm not expecting it to replace the current QEMU KVM support in >   the forseeable future, given its current level of features and the >   size of its dev team compared to QEMU/KVM. They did have some fun >   demos of booting using the host OS filesystem though. We can >   actually do the same with regular KVM/libvirt but there's no nice >   demo tool to show it off. I'm hoping to create one.... Yep it's virtfs which QEMU has supported for a while. The trick is setting things up so that the Linux guest boots from virtfs.