On Wed, Apr 03, 2019 at 09:13:58AM +0200, Ulrich Windl wrote: > I'm surprised: Once sbd writes the fence command, it usually takes > less than 3 seconds until the victim is dead. If you power off a > server, the PDU still may have one or two seconds "power reserve", so > the host may not be down immediately. Besides of that power-cycles are > additional stress for the hardware... > > So maybe you want to explain why and how much faster IPMI and PDU fencing are.
SBD is slow for me too. Since it doesn't have a way to confirm the kill it needs to wait for various timeouts and these can be quite high. For example the IBM storage timeouts require this setup: Timeout (watchdog) : 130 Timeout (msgwait) : 270 On the same cluster IPMI fence executes in a second or two, but requires network connectivity. -- Valentin _______________________________________________ Manage your subscription: https://lists.clusterlabs.org/mailman/listinfo/users ClusterLabs home: https://www.clusterlabs.org/
