MULTIPATH LOAD BALANCING OPTIMIZATIONS FOR ALUA STORAGE SYSTEMS

摘要

Techniques for performing I/O load balancing are provided. In one embodiment, a computer system can receive an I/O request destined for a storage array, where the computer system is communicatively coupled with the storage array via a plurality of paths, and where the plurality of paths include a set of optimized paths and a set of unoptimized paths. The computer system can further determine whether the I/O request can be transmitted to the storage array via either an optimized path or an unoptimized path, or solely via an optimized path. The computer system can then select a path in the plurality of paths based on the determination and transmit the I/O request to the storage array via the selected path.

主权项

1. A method for performing I/O load balancing, the method comprising:
receiving, by a computer system, I/O requests destined for a storage array, the computer system being communicatively coupled with the storage array via a plurality of paths, the plurality of paths including a set of optimized paths and a set of unoptimized paths; determining, by the computer system, whether the I/O requests can be load balanced across both the set of optimized paths and the set of unoptimized paths, or can solely be load balanced across the set of optimized paths; and for each I/O request:
selecting, by the computer system, a path in the plurality of paths based on the determining; andtransmitting, by the computer system, the I/O request to the storage array via the selected path.