[Pacemaker] Should monitor operations be stopped after a resource is unmanaged?

Ron Kerry rkerry at sgi.com
Fri Apr 1 20:09:40 UTC 2011


On 7/22/64 2:59 PM, Pavel Levshin wrote:
> 01.04.2011 18:36, Ron Kerry:
>  > Folks -
>  >
>  > Consider a running cluster with all resources managed. We want to stop
>  > and quickly restart a particular resource without impacting other
>  > resources. The software stack running on the system can deal with this
>  > sort of temporary outage. We perform the following actions:
>  > * unmanage the resource
>  > * stop the resource
>  > * start the resource
>  > * manage the resource
>  >
>  > The above procedure is sometimes successful. However, we will also
>  > sometimes get a resource monitor failure after stopping the resource.
>  > It is clear that the monitor operation was not stopped (at least not
>  > immediately) by unmanaging the resource.
>
> Unmanaged resource cannot be started and stopped, but can still be
> monitored.

So unmanaged really means the resource is still being managed to some degree?

This does not seem desirable behavior. An unmanaged resource should be exactly that ... completely 
unmanaged ==> It cannot be stopped, started OR monitored.


-- 

Ron Kerry         rkerry at sgi.com
Global Product Support - SGI Federal




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