[ClusterLabs] Preventing multiple resources from moving at the same time.

[Ken Gaillot]

On Tue, 2021-04-20 at 13:43 -0700, Matthew Schumacher wrote:
> I have a resource that more or less makes or breaks everything
> (storage).
> 
> When I move it, it only takes a few seconds and everything keeps
> working 
> due to timeouts, however, if another resource tries to migrate/move
> at 
> the same time it will break and causes an outage.
> 
> Is there any way to define a resource group in such a way where if
> it's 
> in the process of being moved, don't move anything else no matter
> what?
> 
> Thanks,
> Matt

I think the closest thing is an optional ordering. If A is ordered
after B optionally, and both have to move, A will stop, then B will
stop, then B will start, then A will start. If only B has to move, it
won't force A to restart.
-- 
Ken Gaillot <kgaillot at redhat.com>