On Thu, 2013-05-23 at 15:00 -0400, David Vossel wrote: > Migration time, depending on network speed and hardware, is much longer than > the shared storage option (minutes vs. seconds).
This is just one data point (of course), but for the vast majority of services that I run, if the live migration time is as long as it takes to shut down a VM and boot it on another server, then there isn't much of an advantage to doing the live migration. Especially if we're talking about an option that is a long way from being battle-tested, and critical services such as DNS and authentication. Most of these critical services do not use long-lived connections. I can see a few VMs that exist to provide ssh logins where a minutes-long live migration would be clearly preferable to a shut down and reboot, but in most cases, if it's as slow as rebooting, it isn't going to be any advantage to me. It will be interesting though to see how many applications people come up with where a minutes-long live migration is preferable to shutdown and reboot. --Greg _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
