Re: [libvirt] [Xen-devel] [PATCH 00/12] libxl: fork: SIGCHLD flexibility

On Mon, Jan 27, 2014 at 06:39:36PM -0700, Jim Fehlig wrote: BTW, I meant to ask before - what is the SIGCHLD reference about in the subject line ? libvirt drivers that live inside libvirtd should never use or rely on the SIGCHLD signal at all. All VM processes started by libvirtd ought to be fully daemonized so that their parent is pid 1 / init. This ensures that the libvirtd daemon can be restarted without all the VMs getting reaped. Once the VMs are reparented to init, then libvirt or library code it uses has no way of ever receiving SIGCHLD. I'm unclear if the libvirt libxl driver is currently daemonizing the processes associated with VMs it starts, but if not, it really should do. Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|