Re: [Libguestfs] Can I specify qcow2 preallocation method with virt-builder?

On Tue, May 17, 2016 at 06:03:16PM +0300, Yaniv Kaul wrote: The default images we supply on http://libguestfs.org are raw sparse. However maybe you've got your own templates, in which case you can control the format and preallocation as you like. However it's still possible that virt-builder might "lose" the preallocation mode when it performs the steps in the plan (although I can't at the moment see any case where this would really happen if you start with qcow2 templates and ask for qcow2 output format). The only way I can see to deal with this reliably is to model it in the planner tags + transitions function. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into KVM guests. http://libguestfs.org/virt-v2v