Re: [libvirt] [PATCH] monitor-proxy: Tool for testing qemu monitor interaction

On 07/01/2011 08:07 AM, Jiri Denemark wrote: > It has two modes, normal and interactive. In normal mode, messages are > passed from libvirt to qemu and back as they come and copyied to stdout > so that one can monitor the communication. Cool! But post-0.9.3, so I haven't reviewed the patch itself yet.

> To start monitor-proxy one needs to follow the following steps: > - start a domain > - run monitor-proxy [-i] <monitor socket path> > for example: monitor-proxy /var/lib/libvirt/qemu/vm1.monitor > - restart libvirtd (this makes libvirtd disconnect from qemu and > reconnect to the proxy) Sounds like it would be useful to add a libvirt API (perhaps under the qemu namespace, similar to our existing 'virsh qemu-monitor-command' extensions, and thus not officially supported) to force libvirt to reconnect to a monitor socket without having to restart all of libvirtd.

> monitor-proxy supports libvirtd restarts, i.e., if libvirtd disconnects, > the proxy just waits until it reconnects again. Stopping the proxy > while libvirtd is running kills the domain since libvirtd sees monitor > EOF. To stop using monitor-proxy without killing the domain, one needs > to stop libvirtd, stop monitor-proxy, and start libvirtd. Again, a libvirt monitor-reconnect command would be handy.