| 摘要 |
<p>A method of controlling distribution of processing system including a plurality of host data processors (12) connected to a data storage system (14) which includes a digital storage that is partitioned into a plurality of volumes (20). The method includes assigning ownership of the volumes (80) to the host processors (12) such that each of the host processors owns a different subset of the plurality of volumes, wherein a host processor is prohibited from sending I/O requests to any of the volumes which it does not own. The method further includes monitoring the I/O requests that are sent each of the volumes by each of the host processors; from information obtained through monitoring, generating workload statistics indicative of the distribution of workload among the host processors; detecting a workload imbalance in the workload statistics; and in response to detecting a workload imbalance, reassigning ownership of the volumes to the host processors (12) so as to change the distribution of workload among the host processors.</p> |
