Internal log management in memory systems

Abstract

Described are systems and methods for internal log management in memory sub-systems. An example memory sub-system comprises a controller managing one or more memory devices. The controller is configured to perform operations, comprising: maintaining a write pointer referencing a next data item position within a log buffer residing on a memory device of the one or more memory devices; maintaining a log retrieval pointer referencing a data retrieval position within the log buffer; storing, at a log buffer position specified by the write pointer, a data item reflecting a state of the system; advancing the write pointer by a size of the data item; responsive to determining that the write pointer exceeds an end of the log buffer, wrapping the write pointer around the end of the log buffer; responsive to receiving, from a host, a log retrieval request, retrieving the log data starting from the position within the log buffer referenced by the log retrieval pointer; transmitting the retrieved log data to the host; advancing the log retrieval pointer by a size of the retrieved log data; responsive to determining that the log retrieval pointer exceeds the end of the log buffer, wrapping the log retrieval pointer around the end of the log buffer.