Method and device to update one or more L2P mapping tables based on journal repository

A storage device for metadata management, comprising:

• a non-volatile memory;
• a buffer;
• a volatile memory;
• and
• at least one storage controller coupled to the non-volatile memory and the volatile memory, where the at least one storage controller is configured to:
• receive a memory write command from a host device, wherein the memory write command comprises data and a logical address associated with a data write operation initiated by the host device;
• perform the data write operation by writing the data at a physical address of the non-volatile memory that is associated with the logical address;
• store a mapping of the logical address and the physical address as a first logical-to-physical (L2P) address mapping entry of the volatile memory and as a second L2P address mapping entry of the buffer, wherein the volatile memory comprises a first set of L2P address mapping entries that includes the first L2P address mapping entry, wherein the buffer comprises a second set of L2P address mapping entries that includes the second L2P address mapping entry, and wherein the first and second sets of L2P address mapping entries are associated a plurality of L2P address mapping tables of the non-volatile memory;
• determine a number of the second set of L2P address mapping entries of the buffer exceeds a predefined number of L2P address mapping entries;
• and
• upon determining that the number of the second set of L2P address mapping entries of the buffer exceeds the predefined number of L2P address mapping entries,
• (i) sequentially read a first set of L2P address mapping tables of the plurality of L2P address mapping tables of the non-volatile memory and
• (ii) update the first set of L2P address mapping tables based on the first set of L2P address mapping entries of the volatile memory.

A method for metadata management in a storage device comprising a volatile memory, a non-volatile memory, and a buffer, the method comprising:

• receiving a memory read command from a host device, wherein the memory read command comprises data and a logical address associated with a data read operation initiated by the host device;
• determining that a logical-to-physical (L2P) address mapping entry of a plurality of L2P address mapping entries that corresponds to the logical address is not stored in the buffer, wherein the L2P address mapping entry comprises a physical address that is mapped to the logical address;
• and
• in response to determining that the L2P address mapping entry corresponding to the logical address is not stored in the buffer:
• determining that the L2P address mapping entry corresponding to the logical address is not stored in an L2P cache different from the buffer;
• and
• in response to determining that the L2P address mapping entry corresponding to the logical address is not stored in the L2P cache:
• reading a first L2P address mapping table of a plurality of L2P address mapping tables, wherein the first L2P address mapping table comprises the L2P address mapping entry corresponding to the logical address;
• and
• performing the data read operation by reading the data from the physical address of the non-volatile memory and using the first L2P address mapping table of the plurality of L2P address mapping tables.