Method, apparatus and system to dynamically manage logical path resources

摘要

System, apparatus, and methods for dynamically managing logical path resources are provided. The logical path resources are managed by adding, removing, and establishing logic paths based on specified priority schemes associated with the logical path resources. Information associated with the logical path resources is updated in a logical path resource table.

主权项

1. A method for dynamically managing logical path resources in a storage system comprising a processor, the method comprising:
establishing, by the processor, a new logical path; designating, by the processor, a priority scheme to the new logical path, the designated priority scheme comprising one of a plurality of priorities comprising a critical priority, a normal priority, and a non-critical priority; determining, by the processor, an availability of a logical path based on a comparison of the designated priority scheme and a priority of a current logical path, said determining comprising:
determining that the logical path resource is available if the designated priority scheme is the critical priority and the current logical path includes the non-critical priority,determining that the logical path resource is unavailable if the designated priority scheme is the non-critical priority or the normal priority, anddetermining that the logical path resource is unavailable if the current logical path includes the critical priority or the normal priority such that the logical path resource is unavailable to the new logical path when the designated priority is critical and the current logical path includes the critical priority or the normal priority; performing a path priority operation based on the availability of logical path resource; and updating information associated with logical path resources in a logical path resource table based on performing the path priority operation.