System and method for copy on write on an SSD

A computer program product embodied on a non-transitory computer readable medium, comprised of a series of instructions executable on a computer, the computer program product performing a process for providing improved copy on write functionality within an solid state drive;

• the computer program implementing the steps of:
• determining that a clone entry for a cloned data is an only clone entry, wherein the determination comprises:
• determining that a reference to a next index of the cloned entry matches a reference to a master index of the cloned entry;
• determining that a reference to a next index of a master entry points to the clone entry;
• uncloning the clone entry of the cloned data by replacing the reference to the next index located in a first sub-entry with a packed logical block, and replacing the reference to the master index located in a second sub-entry with a packed logical block;
• and
• uncloning the master entry of the cloned data by replacing the reference to the next index located in a third sub-entry with a packed logical block, and replacing the reference to the master index located in a fourth sub-entry with a packed logical block, wherein each packed logical block comprises a map of logical block addresses (LBAs) to a physical address.

A system for providing improved copy on write functionality within an solid state drive, the system comprising:

• a first device;
• wherein the first device includes stored instructions stored in memory, the instructions comprising:
• determining that a clone entry for a cloned data is an only clone entry, wherein the determination comprises:
• determining that a reference to a next index of the cloned entry matches a reference to a master index of the cloned entry;
• determining that a reference to a next index of a master entry points to the clone entry;
• uncloning the clone entry of the cloned data by replacing the reference to the next index located in a first sub-entry with a packed logical block, and replacing the reference to the master index located in a second sub-entry with a packed logical block;
• and
• uncloning the master entry of the cloned data by replacing the reference to the next index located in a third sub-entry with a packed logical block, and replacing the reference to the master index located in a fourth sub-entry with a packed logical block, wherein each packed logical block comprises a map of logical block addresses (LBAs) to a physical address.