[Libvir] How libvirt handles QEMU?

Richard W.M. Jones rjones at redhat.com
Mon May 14 13:50:27 UTC 2007

Jun Koi wrote:
> Hello,
> I am new to libvirt, so have a question. My concern is: libvirt can
> manage QEMU VMs. The point is thatI QEMU doesnt not export monitor
> interface to outside (at least that is what I know about older version
> of QEMU, not sure if anything changed recently).
> So how can libvirt does something like: pause, resume or extract
> internal information about a QEMU VM?

libvirt currently uses a daemon (libvirt_qemud) which keeps a connection 
to the qemu processes' stdin & stdout.

In future (IMHO) we ought to use qemu -monitor 
pipe:/var/some/well/known/random/pipe so that no daemon should be needed.


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