Incrementally updating recovery map data for a memory system

A method, comprising:

• identifying a recovery map comprising a snapshot stream that includes a plurality of snapshot segments, the plurality of snapshot segments including representations of a plurality of portions of a memory state for a memory system;
• generating journal updates associated with changes to the memory state for the memory system and adding the journal updates to the recovery map;
• iteratively updating the recovery map at timing checkpoints of the plurality of snapshot segments to generate an updated plurality of snapshot segments of the snapshot stream, wherein iteratively updating the recovery map comprises:
• generating a new snapshot segment for a portion of the memory state corresponding to a least recent snapshot segment from the snapshot stream;
• and
• replacing the least recent snapshot segment with the new snapshot segment.

A system, comprising:

• one or more processors;
• memory in electronic communication with the one or more processors;
• and
• instructions stored in the memory, the instructions being executable by the one or more processors to:
• identify a recovery map comprising a memory snapshot that includes a representation of a memory state for a memory system at a first time associated with when the memory snapshot was generated;
• generate journal updates associated with changes to the memory state between the first time and a second time after the memory snapshot was generated and adding the journal updates to the recovery map;
• generate an updated version of the memory snapshot, wherein generating the updated version of the memory snapshot comprises:
• generating an updated first portion of the memory snapshot including a representation of a memory state for a first portion of the memory system at the second time;
• and
• replacing a first portion of the memory snapshot associated with the first portion of the memory system with the updated first portion of the memory snapshot.