Load balancing agent for load distribution

A system, comprising:

• a memory;
• and
• at least one processor that is operatively coupled to the memory, the at least one processor being configured to perform the operations of:
• detecting a load-balancing event;
• selecting a given array port in a storage system;
• selecting a first logical unit number (LUN) in the storage system;
• identifying a plurality of host ports in a host device;
• and
• causing a respective LUN-specific priority status of each of the plurality of host ports, with respect to the first LUN, to have a first value, the first value being a value that would cause a path selection software in the host device to choose another array port in the storage system over the given array port for transmission of input-output (I/O) requests originating from any of the plurality of host ports which are directed to the first LUN,
• wherein the causing operation is performed by (i) updating a data structure in the storage system to map the first value to each of a plurality of LUN-path pairs, each LUN-path pair including the first LUN and a different respective path that spans between one of the plurality of host ports and the given array port, and (ii) propagating the update to the host device.

A non-transitory computer-readable medium storing one or more processor executable instructions, which when executed by at least one processor, cause the at least one processor to perform the operations of:

• detecting a load-balancing event;
• selecting a given array port in a storage system;
• selecting a first logical unit number (LUN) in the storage system;
• identifying a plurality of host ports in a host device;
• and
• causing a respective LUN-specific priority status of each of the plurality of host ports, with respect to the first LUN, to have a first value, the first value being a value that would cause a path selection software in the host device to choose another array port in the storage system over the given array port for transmission of input-output (I/O) requests originating from any of the plurality of host ports which are directed to the first LUN,
• wherein the causing operation is performed by (i) updating a data structure in the storage system to map the first value to each of a plurality of LUN-path pairs, each LUN-path pair including the first LUN and a different respective path that spans between one of the plurality of host ports and the given array port, and (ii) propagating the update to the host device.