Data Storage Device and Method for Host-Assisted Deferred Defragmentation and System Handling

A method comprising:

• performing in a host in communication with a data storage device comprising a memory:
• determining a need to defragment a logical block address space;
• associating a defragmentation identifier with a plurality of random write commands in the logical block address space;
• and
• sending the defragmentation identifier and the plurality of random write commands to the data storage device, wherein the association of the defragmentation identifier with the plurality of random write commands is configured to cause data in the plurality of random write commands to be stored sequentially in the memory.

A data storage device comprising:

• a memory;
• means for receiving, from a host, a plurality of write commands and a defragmentation identifier associated with the plurality of write commands, wherein the plurality of write commands comprise a plurality of non-sequential logical block addresses and a plurality of sequential segments of a file;
• and
• means for executing the plurality of write commands by storing the plurality of sequential segments of the file sequentially in the memory even though the logical block addresses associated with the segments of the file are non-sequential.