Systems, methods, and computer readable media for compressing data at a virtually provisioned storage entity

A system for accessing and compressing data in a data storage entity, the system comprising:

• a compression coordinator, implemented by a processor, for receiving an input/output (I/O) command to perform an operation on data associated with a logical block address (LBA) in a virtually provisioned device in a data storage entity, wherein the data storage entity has established an expanded private LBA space for the virtually provisioned device in the data storage entity to include both a compressed LBA space portion for storing compressed data and an associated uncompressed LBA space portion for storing uncompressed data;
• and
• a compression engine for executing background operations that send commands to the compression coordinator that instruct the compression coordinator to compress or decompress chunks of data in the expanded private LBA space, wherein the compression coordinator is further configured to determine if a data chunk containing the data in the uncompressed LBA space is available using the LBA in the I/O command to access the data chunk, to perform the operation on the data chunk if the data chunk in the uncompressed LBA space is available, and if the data chunk in the uncompressed LBA space is not available, to access the data chunk in the compressed LBA space using both the LBA and a predefined offset value, decompress that data, and to perform the I/O command on or with the decompressed data for the data chunk.

A non-transitory computer readable medium having stored thereon executable instructions that when executed by the processor of a computer control the computer to perform steps comprising:

• at a data storage entity:
• receiving an input/output (I/O) command to perform an operation on data associated with a logical block address (LBA) in a virtually provisioned device in the data storage entity, wherein the data storage entity has established an expanded private LBA space for the virtually provisioned device in the data storage entity to include both a compressed LBA space portion for storing compressed data and an associated uncompressed LBA space portion for storing uncompressed data;
• determining if a data chunk containing the data in the uncompressed LBA space is available using the LBA in the I/O command to access the data chunk;
• if the data chunk in the uncompressed LBA space is available, performing the operation on the data chunk;
• and
• if the data chunk in the uncompressed LBA space is not available, accessing the data chunk in the compressed LBA space using both the LBA and a predefined offset value and performing the operation on the data chunk.