Abnormal data management method, memory storage device, and memory control circuit unit

A memory storage device, comprising:

• a connection interface unit, configured to couple to a host system;
• a rewritable non-volatile memory module, comprising a plurality of physical units;
• and
• a memory control circuit unit, coupled to the connection interface unit and the rewritable non-volatile memory module, wherein
• the memory control circuit unit is configured to execute a data consolidation operation to copy abnormal data from a second physical unit among the plurality of physical units to a first physical unit among the plurality of physical units,
• the memory control circuit unit is further configured to store first management information in the rewritable non-volatile memory module and update the first management information according to second management information, wherein the first management information reflects a storage status of the abnormal data in the first physical unit, and the second management information reflects a storage status of the abnormal data in the second physical unit,
• the memory control circuit unit is further configured to receive a read command from the host system, wherein the read command instructs to read data stored in at least one logical unit, and the at least one logical unit corresponds to at least one physical node in the first physical unit,
• the memory control circuit unit is further configured to inquire the first management information according to the read command,
• the memory control circuit unit is further configured to transmit data read from the at least one physical node to the host system when an inquiring result reflects that the abnormal data is not stored in the at least one physical node, and
• the memory control circuit unit is further configured to transmit error information to the host system when the inquiring result reflects that the abnormal data is stored in the at least one physical node.

A memory control circuit unit, configured to control a rewritable non-volatile memory module, wherein the rewritable non-volatile memory module comprises a plurality of physical units, the memory control circuit unit comprising:

• a host interface, configured to couple to a host system;
• a memory interface, configured to couple to the rewritable non-volatile memory module;
• and
• a memory management circuit, coupled to the host interface and the memory interface, wherein
• the memory management circuit is configured to execute a data consolidation operation to copy abnormal data from a second physical unit among the plurality of physical units to a first physical unit among the plurality of physical units,
• the memory management circuit is further configured to store first management information in the rewritable non-volatile memory module and update the first management information according to second management information, wherein the first management information reflects a storage status of the abnormal data in the first physical unit, and the second management information reflects a storage status of the abnormal data in the second physical unit,
• the memory management circuit is further configured to receive a read command from the host system, wherein the read command instructs to read data stored in at least one logical unit, and the at least one logical unit corresponds to at least one physical node in the first physical unit,
• the memory management circuit is further configured to inquire the first management information according to the read command,
• the memory management circuit is further configured to transmit data read from the at least one physical node to the host system when an inquiring result reflects that the abnormal data is not stored in the at least one physical node, and
• the memory management circuit is further configured to transmit error information to the host system when the inquiring result reflects that the abnormal data is stored in the at least one physical node.