Hierarchical memory wear leveling employing a mapped translation layer

A non-transitory computer-readable storage medium comprising instructions that, when executed by a processing device, cause the processing device to:

• detect a wear-leveling event in relation to a first memory segment in a set of memory components of the memory subsystem;
• add, in response to detection of the wear-leveling event, a migration association map entry to a migration association map to control copying of a first set of managed units from the first memory segment to a second set of managed units of a second memory segment in the set of memory components, wherein adding the migration association map entry includes setting a source address of the migration association map entry to an address of the first memory segment, setting a destination address of the migration association map entry to an address of the second memory segment, and an exchange pointer of the migration association map entry to a value that references an unused managed unit in the first memory segment when the wear-leveling event is detected, wherein the value is retrieved from an exchange pointer of a first segment metadata table entry in a segment metadata table associated with the first memory segment;
• and
• copy the first set of managed units from the first memory segment to the second set of managed units of the second memory segment beginning with a managed unit in the first set of managed units following the managed unit referenced by the exchange pointer of the first segment metadata table entry, wherein copying each managed unit in the first set of managed units to the second set of managed units includes incrementing the exchange pointer of the first segment metadata table entry such that the exchange pointer of the first segment metadata table entry references an immediately, previously copied managed unit in the first set of managed units.

A system comprising:

• a plurality of memory components, including a first memory segment of a first set of managed units and a second memory segment of a second set of managed units;
• and
• a processing device, operatively coupled with the plurality of memory components, to:
• add, in response to detection of a wear-leveling event, a migration association map entry to a migration association map to control copying of the first set of managed units from the first memory segment to the second set of managed units of the second memory segment, wherein adding the migration association map entry includes setting an exchange pointer of the migration association map entry to a value that references an unused managed unit in the first memory segment when the wear-leveling event is detected, wherein the value is retrieved from an exchange pointer of a first segment metadata table entry in a segment metadata table associated with the first memory segment;
• and
• copy the first set of managed units from the first memory segment to the second set of managed units of the second memory segment beginning with a managed unit in the first set of managed units following the managed unit referenced by the exchange pointer of the first segment metadata table entry, wherein copying each managed unit in the first set of managed units to the second set of managed units includes incrementing the exchange pointer of the first segment metadata table entry such that the exchange pointer of the first segment metadata table entry references an immediately, previously copied managed unit in the first set of managed units.