On Wed, Nov 15, 2017 at 04:52:56PM +0100, Gandalf Corvotempesta wrote:

I'm thinking if support for XVA files could be added to qemu-img The file-format is well known (it's just a tar archive) and there are scripts that are able to convert an XVA file to a RAW image. (ie: https://gist.github.com/miebach/0433947bcf053de23159)

Running these script on their own is very time consuming, as you have to extract the XVA, convert any disk image from "single chunks" to a raw image and then use qemu-img to convert from raw to qcow.

Maybe a native support will be able to skip some steps. (like the conversion from "single chunks" to raw and raw to qcow2)

Why not use the offset/size support in the raw driver? We use that to access files inside OVA files (also a tar file with a funny extension) in virt-v2v: https://github.com/libguestfs/libguestfs/blob/994ca8d87361a4eb52a05bb4496b07... Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://people.redhat.com/~rjones/virt-top