System and method for improving cache performance upon detection of a LUN control event

A computer program product residing on a non-transitory computer readable medium having a plurality of instructions stored thereon which, when executed by a processor, cause the processor to perform operations comprising:

• receiving a Mode Select command concerning a LUN from a host, wherein the Mode Select command defines control information and host identifier information concerning the host associated with the Mode Select command;
• processing the Mode Select command to determine if the control information included within the Mode Select command signifies an intent by the host to relinquish control of the LUN;
• if the control information signifies an intent to relinquish control of the LUN, confirming that the host identifier information included within the Mode Select command matches LUN control identifier information that defines the host that currently controls the LUN;
• and
• if the host identifier information matches the LUN control identifier information, writing at least the control information included within the Mode Select command to a buffer associated with the LUN, wherein the buffer includes a control field and a GUID field.

A computing system including at least one processor and at least one memory architecture coupled with the at least one processor, wherein the computing system is configured to perform operations comprising:

• receiving a Mode Select command concerning a LUN from a host, wherein the Mode Select command defines control information and host identifier information concerning the host associated with the Mode Select command;
• processing the Mode Select command to determine if the control information included within the Mode Select command signifies an intent by the host to relinquish control of the LUN;
• if the control information signifies an intent to relinquish control of the LUN, confirming that the host identifier information included within the Mode Select command matches LUN control identifier information that defines the host that currently controls the LUN;
• and
• if the host identifier information matches the LUN control identifier information, writing at least the control information included within the Mode Select command to a buffer associated with the LUN, wherein the buffer includes a control field and a GUID field.