On Wed, Apr 27, 2011 at 07:41:45AM -0500, Igor Serebryany
wrote:> Hi,
>
> I am using the libguestfs-1.11.0-1 binaries posted here:
> http://libguestfs.org/download/binaries/debian-packages/
>
> on a Sid system. When I use libguestfs, I can see that an instance
> of QEMU is starting up using the binary @ /usr/bin/qemu-system-x86_64
>
> I have KVM installed on the system at /usr/bin/kvm -- how do I
> ensure that KVM gets used by libguestfs instead of qemu? I guess I
> can always replace the qemu binary with a symlink to the kvm binary,
> but that seems like a hack...
You don't need to hack it :-)
Just set LIBGUESTFS_QEMU environment variable to point to your
installed KVM binary, eg:
export LIBGUESTFS_QEMU=/usr/bin/kvm
guestfish
If that doesn't work, send us the complete output of
libguestfs-test-tool.
Note that KVM must have support for virtio-serial. It depends on
which version of KVM that is; all recent versions of KVM should
support it, but not older versions. You can find out by doing:
$ kvm -device \? 2>&1 | grep virtio-serial
name "virtserialport", bus virtio-serial-bus
name "virtconsole", bus virtio-serial-bus
name "virtio-serial-pci", bus PCI, alias "virtio-serial"
As an aside, if you want to compile your own qemu or KVM from source
then you need to use a qemu wrapper, which is slightly different and
more complicated but is explained here:
http://libguestfs.org/guestfs.3.html#qemu_wrappers
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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