hast exec vs devd for handling CARP events

[Adam Vande More]

On Fri, Nov 6, 2015 at 12:24 AM, Josh Paetzel <josh at tcbug.org> wrote:

> Both hast and carp have an amazing propensity to go split brain. This has
> devastating affects.
>

HAST has no more propensity for split brain than any other 2 node cluster
HA storage IME.  Proper fencing is really the best, but even a not quite
perfect fencing setup is entirely sufficient for a great many use cases.

In the cases where split-brain does occur, resolving it isn't an ELE either
in a well designed HA system.

HAST and heartbeat are the best combo I've used on FreeBSD and it's as good
as the equivalents on other platforms.

Real high end clustered HA like lustre is a different story on FreeBSD.


-- 
Adam