On Mon, Feb 06, 2017 at 07:25:23PM +0100, Tomáš Golembiovský wrote:
No we don't. Something like this also works:
qemu-img info 'json:{ "offset": 0, "file": { "filename": "/dev/null" } }'
/dev/null has a long history of breaking qemu (although it does work at the moment), eg: https://bugzilla.redhat.com/show_bug.cgi?id=847549 Libguestfs has a workaround for this in fact: https://github.com/libguestfs/libguestfs/blob/master/lib/drives.c#L395 Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://people.redhat.com/~rjones/virt-df/