Techniques for dynamically tracking logical units moving between input/output ports of a storage area network target

A computer program product, comprising:

• a computer-readable storage medium;
• and
• computer-readable code for tracking logical unit numbers between input/output ports of storage area network targets embodied on the computer-readable storage medium, wherein the computer-readable code, when executed by a processor of a data processing system, causes the processor to:
• detect an input/output operation failure associated with a logical unit number, wherein the logical unit number is associated with a first target port;
• determine whether the logical unit number is associated with a second target port subsequent to the detected input/output operation failure;
• and
• route subsequent input/output operations for the logical unit number to the logical unit number via the second target port in response to determining that the logical unit number is associated with the second target port.

A data processing system, comprising:

• a memory system;
• and
• a processor coupled to the memory system, wherein the processor is configured to:
• detect an input/output operation failure associated with a logical unit number, wherein the logical unit number is associated with a first target port;
• determine whether the logical unit number is associated with a second target port subsequent to the detected input/output operation failure;
• and
• route subsequent input/output operations for the logical unit number to the logical unit number via the second target port in response to determining that the logical unit number is associated with the second target port.