System and method for auto-tiering data in a log-structured file system based on logical slice read temperature

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:

• partitioning an address space of a storage object of a log-structured file system into a plurality of slices, wherein the log-structured file system includes a plurality of storage objects in a plurality of storage tiers, wherein the plurality of storage objects are configured to receive read IO operations and write IO operations;
• allocating one or more physical data blocks of the storage object to each of the plurality of slices;
• determining a read temperature associated with at least one slice of the plurality of slices;
• determining a read temperature associated with each physical data block of the one or more physical data blocks allocated to the at least one slice;
• and
• retiering at least one physical data block of the one or more physical data blocks allocated to the at least one slice between the plurality of storage tiers based upon, at least in part, the read temperature associated with each physical data block of the one or more physical data blocks allocated to the at least one slice, wherein the retiering is not based on any write temperature associated with the log-structured file system.

A computing system comprising:

• a memory architecture;
• and
• a processor configured to partition an address space of a storage object of
• a log-structured file system into a plurality of slices, wherein the log-structured file system includes a plurality of storage objects in a plurality of storage tiers, wherein the plurality of storage objects are configured to receive read IO operations and write IO operations, the processor further configured to allocate one or more physical data blocks of the storage object to each of the plurality of slices, the processor further configured to determine a read temperature associated with at least one slice of the plurality of slices, the processor further configured to determine a read temperature associated with each physical data block of the one or more physical data blocks allocated to the at least one slice, and the processor further configured to retier at least one physical data block of the one or more physical data blocks allocated to the at least one slice between the plurality of storage tiers based upon, at least in part, the read temperature associated with each physical data block of the one or more physical data blocks allocated to the at least one slice, wherein the retiering is not based on any write temperature associated with the log-structured file system.