On Wed, Jun 26, 2013 at 07:23:44PM +0000, Collins, Robert (HPCS) wrote:
Hi, I'm the project lead for TripleO (OpenStack on OpenStack - a
disk image based approach to deploying and maintaining OpenStack
clouds), and we have a tool 'diskimage-builder' which consumes
upstream vendor cloud images and customises them.
Why don't you use libguestfs for this?
I see you have a list of "safe" disk images, but still .. using
losetup and mount to mount disk images that you download from the net
on your host kernel is very dangerous. A rogue filesystem which
exploits a fsdriver bug bypasses all permissions checks, process
boundaries, SELinux, and the usual things that we use to keep VMs safe.
Plus libguestfs has a much cleaner API for modifying disk images, has
a Python API and it's already being used elsewhere in OpenStack.
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
virt-p2v converts physical machines to virtual machines. Boot with a
live CD or over the network (PXE) and turn machines into KVM guests.