Providing multiple quiesce state machines in a computing environment

A method for facilitating processing of a computing environment, the method comprising:

• initiating, by a first initiating processor of a first zone, a first quiesce request to a first controller, the first controller comprising system serialization controls configured to quiesce only logical processors of a first set of zones and to handle quiesce requests associated with the first set of zones comprising the first zone;
• initiating, by a second initiating processor of a second zone, a second quiesce request to a second controller, the second controller comprising system serialization controls configured to quiesce only logical processors of a second set of zones and to handle quiesce requests associated with the second set of zones comprising the second zone, wherein each zone in the first set of zones is uniquely associated with only the first controller and each zone in the second set of zones is uniquely associated with only the second controller;
• processing, by the system serialization controls of the first controller, the first quiesce request, the processing comprising providing a first processor quiesce request to processors of the first set of zones, the first processor quiesce request comprising an indication of the first initiating zone, wherein the first initiating zone indication is usable by the processors of the first set of zones for determining a first quiesce action to be performed, and the processing the first quiesce request further comprises the first controller sending a purge request to a receiving processor, the purge request including a tag identifying the first controller, the tag usable by the receiving processor to differentiate between the first and second quiesce requests and to coordinate responding to the first quiesce request separately from the second quiesce request;
• and
• processing, by the system serialization controls of the second controller, the second quiesce request, the processing comprising providing a second processor quiesce request to processors of the second set of zones, the second processor quiesce request comprising an indication of the second initiating zone, wherein the second initiating zone indication is usable by the processors of the second set of zones for determining a second quiesce action to be performed, wherein the first controller and the second controller are configured to process the first quiesce request and the second quiesce request independently of each other, thereby allowing multiple quiesce requests to be active in the computing environment at the same time.

A computer program product for facilitating processing of a computing environment, the computer program product comprising:

• a non-transitory computer readable storage medium that is readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising:
• initiating, by a first initiating processor of a first zone, a first quiesce request to a first controller, the first controller configured to quiesce only logical processors of a first set of zones and to handle quiesce requests associated with the first set of zones comprising the first zone;
• initiating, by a second initiating processor of a second zone, a second quiesce request to a second controller, the second controller configured to quiesce only logical processors of a second set of zones and to handle quiesce requests associated with the second set of zones comprising the second zone, wherein each zone in the first set of zones is uniquely associated with only the first controller and each zone in the second set of zones is uniquely associated with only the second controller;
• processing, by the first controller, the first quiesce request, the processing comprising providing a first processor quiesce request to processors of the first set of zones, the first processor quiesce request comprising an indication of the first initiating zone, wherein the first initiating zone indication is usable by the processors of the first set of zones for determining a first quiesce action to be performed, and the processing the first quiesce request further comprises the first controller sending a purge request to a receiving processor, the purge request including a tag identifying the first controller, the tag usable by the receiving processor to differentiate between the first and second quiesce requests and to coordinate responding to the first quiesce request separately from the second quiesce request;
• and
• processing, by the second controller, the second quiesce request, the processing comprising providing a second processor quiesce request to processors of the second set of zones, the second processor quiesce request comprising an indication of the second initiating zone, wherein the second initiating zone indication is usable by the processors of the second set of zones for determining a second quiesce action to be performed, wherein the first controller and the second controller are configured to process the first quiesce request and the second quiesce independently of each other, thereby allowing multiple quiesce requests to be active in the computing environment at the same time.