On Sat, Aug 25, 2012 at 11:09:52AM +0100, Paul Maunders wrote: > > Right. qemu doesn't support compression on writes, so you can't > > create a new disk (with no content) with compression enabled. You can > > only convert an existing disk with content, and I believe writes to > > such a disk are either entirely disabled or create uncompressed > > content. > > OK thanks that makes sense now - and it does look like you can write > to a compressed image, but new writes are uncompressed. What are you trying to achieve? If you just want to make small guests (eg for a guest library for testing) then virt-sparsify is possibly the tool you want. Rich. -- 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 Xen guests. http://et.redhat.com/~rjones/virt-p2v
