Controller, memory system and operating method thereof for controlling a non-volatile memory device during a sync-up operation
Various embodiments generally relate to a semiconductor device, and more particularly, to a controller, a memory system and an operating method thereof. In an embodiment of the present disclosure, a controller for controlling a nonvolatile memory device may perform a sync-up operation of transmitting a logical-to-physical (L2P) map segment to a host to update the L2P map segment stored in a host memory included in the host when a map data changing event occurs, register the L2P map segment transmitted to the host and time information at which the sync-up operation is performed in a sync-up management list, calculate a sync-up period based on the time information, and perform the sync-up operation on an L2P map segment having a sync-up period greater than a threshold time, among L2P map segments registered in the sync-up management list.
1. A controller for controlling a nonvolatile memory device, the controller configured to:
perform a sync-up operation of transmitting a logical-to-physical (L2P) map segment to a host to update the L2P map segment stored in a host memory included in the host when a map data changing event occurs,
register the L2P map segment transmitted to the host and time information at which the sync-up operation is performed in a sync-up management list,
calculate a sync-up period based on the time information, and
perform the sync-up operation on an L2P map segment having a sync-up period greater than a threshold time, among L2P map segments registered in the sync-up management list,
wherein the controller is configured to exclude, from a target of the sync-up operation, a first L2P map segment having the sync-up period equal to or less than the threshold time, among the L2P map segments registered in the sync-up management list.
2. The controller of claim 1 , wherein the controller is configured to cache the first L2P map segment into a memory of the controller.
3. The controller of claim 2 , wherein the controller is configured to exclude the first L2P map segment from a target of a cache eviction when the first L2P map segment is already cached in the memory.
4. The controller of claim 2 , wherein the controller is configured to perform, when a read command received from the host corresponds to the first L2P map segment, a read operation on the nonvolatile memory device based on the first L2P map segment cached in the memory.
5. The controller of claim 1 , wherein the controller is configured to perform, when a read command received from the host corresponds to the L2P map segment having the sync-up period greater than the threshold time, a read operation on the nonvolatile memory device based on L2P map data included in the read command.
6. The controller of claim 1 , wherein the map data changing event is an event where at least one mapping relationship between a logical address and a physical address changes among a plurality of pieces of L2P map data included in the L2P map segment transmitted to the host.
7. The controller of claim 1 , wherein the map data changing event is at least one of an update operation, a garbage collection operation, and a read reclaim operation on data corresponding to the L2P map segment transmitted to the host.
8. A memory system comprising:
a nonvolatile memory device; and
a controller for controlling the nonvolatile memory device,
wherein the nonvolatile memory device is configured to store a plurality of logical-to-physical (L2P) map segments each including a plurality of pieces of L2P map data,
wherein the controller is configured to perform a sync-up operation of transmitting an L2P map segment to a host to update the L2P map segment stored in a host memory included in the host when a map data changing event occurs, register the L2P map segment transmitted to the host and time information at which the sync-up operation is performed, in a sync-up management list, calculate a sync-up period based on the time information, and perform the sync-up operation on an L2P map segment having the sync-up period greater than a threshold time, among L2P map segments registered in the sync-up management list, and
wherein the controller is configured to exclude, from a target of the sync-up operation, a first L2P map segment having the sync-up period equal to or less than the threshold time, among the L2P map segments registered in the sync-up management list.
9. The memory system of claim 8 , wherein the controller is configured to cache the first L2P map segment into a memory of the controller.
10. The memory system of claim 9 , wherein the controller is configured to exclude the first L2P map segment from a target of a cache eviction when the first L2P map segment is already cached in the memory.
11. The memory system of claim 9 , wherein the controller is configured to perform, when a read command received from the host corresponds to the first L2P map segment, a read operation on the nonvolatile memory device based on the first L2P map segment cached in the memory.
12. The memory system of claim 8 , wherein the controller is configured to perform, when a read command received from the host corresponds to the L2P map segment having the sync-up period greater than the threshold time, a read operation on the nonvolatile memory device based on L2P map data included in the read command.
13. The memory system of claim 8 , wherein the map data changing event is when at least one mapping relationship between a logical address and a physical address changes among a plurality of pieces of L2P map data included in the L2P map segment transmitted to the host.
14. The memory system of claim 8 , wherein the map data changing event is at least one of an update operation, a garbage collection operation, and a read reclaim operation on data corresponding to the L2P map segment transmitted to the host.
15. An operation method of a memory system including a nonvolatile memory device and a controller for controlling the nonvolatile memory device, the method comprising:
storing, by the nonvolatile memory device, a plurality of logical-to-physical (L2P) map segments each including a plurality of pieces of L2P map data;
performing, by the controller, a sync-up operation of transmitting an L2P map segment to a host to update the L2P map segment stored in a host memory included in the host when a map data changing event occurs;
registering, by the controller, the L2P map segment transmitted to the host and time information at which the sync-up operation is performed in a sync-up management list;
calculating, by the controller, a sync-up period based on the time information;
performing, by the controller, the sync-up operation on an L2P map segment having the sync-up period greater than a threshold time, among L2P map segments registered in the sync-up management list;
excluding, by the controller, from a target of the sync-up operation, a first L2P map segment having the sync-up period equal to or less than the threshold time, among the L2P map segments registered in the sync-up management list; and
caching, by the controller, the first L2P map segment into a memory of the controller.
16. The operation method of claim 15 , further comprising:
performing, by the controller, when a read command received from the host corresponds to the first L2P map segment, a read operation on the nonvolatile memory device based on the first L2P map segment cached in the memory.
17. The operation method of claim 15 , further comprising:
performing, by the controller, when a read command received from the host corresponds to the L2P map segment having the sync-up period greater than the threshold time, a read operation on the nonvolatile memory device based on L2P map data included in the read command.