New to C# and Service Fabric.

I am working on a SF application which has some partitions (lets say 50). And there are 10 virtual machines on which this application is running with approximately 10 partitions on each vm. I want to make change inside each partition upon receiving a notification at vm level. For eg, if all of these partitions are reading data from a db, and a notification comes at all the 10 virtual machines to gracefully stop reading data, how can I pass a notification from the host (vm) to the partitions running on that vm and then wait to receive the acknowledgement from those partitions?

I read few docs but I am not able to understand if this scenario is even possible or not.