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4cf974b674
A user on IRC had accidentally killed all of his libvirt-started dnsmasq instances (due to a buggy dnsmasq service script in Fedora 16), and had hoped that libvirtd would notice this on restart and reload all the dnsmasq daemons (as it does with iptables rules). Unfortunately this was not the case - as long as the network object had a pid registered for dnsmasq and/or radvd, it assumed that the processes were running. This patch takes advantage of the new utility functions in bridge_driver.c to do a "refresh" of all radvd and dnsmasq processes started by libvirt each time libvirtd is restarted - this function attempts to do a SIGHUP of each existing process, and if that fails, it restarts the process, rebuilding all the associated config files and commandline parameters in the process. This normally has no effect, but will be useful in solving the occasional "odd situation" without needing to take the drastic step of destroying/re-starting the network.
LibVirt : simple API for virtualization
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.
Daniel Veillard <veillard@redhat.com>