[libvirt] [PATCH 2/5] daemonize qemu processes
Daniel Veillard
veillard at redhat.com
Mon Dec 15 09:19:28 UTC 2008
On Fri, Dec 12, 2008 at 07:26:32PM +0100, Guido Günther wrote:
> Make sure vms don't get killed when the libvirtd quits unexpectedly.
> Needs the previous patch since it looks at the pid file.
[...]
> + /* wait for qemu process to to show up */
> + if (ret == 0) {
> + int retries = 100;
> + while (retries) {
> + if ((ret = virFileReadPid(driver->stateDir, vm->def->name, &vm->pid)) == 0)
> + break;
> + usleep(10*1000);
> + retries--;
> + }
> + if (ret)
> + qemudLog(QEMUD_WARN, _("Domain %s didn't show up\n"), vm->def->name);
> + }
so we are waiting at most one second and waking up the process 100
times, I would suggest to relax that a bit, give it a bit more time like
10 seconds in case the system is trashing a bit 1 second may really be
too short. And maybe wake up a bit less ...
but patch looks good to me, it's just unfortunate we need to do some
tuning there.
thanks !
Daniel
--
Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/
daniel at veillard.com | Rpmfind RPM search engine http://rpmfind.net/
http://veillard.com/ | virtualization library http://libvirt.org/
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