Unretiring memory device blocks
Various examples are directed to systems and methods for managing a memory device. Processing logic may identify a set of retired blocks at the memory device that were retired during use of the memory device. The processing logic may modify a first table entry referencing the first block to indicate that the first block is not retired. The processing logic may also modify a second table entry referencing the second block to indicate that the second block is not retired. The processing logic may also recreate a logical-to-physical table entry for a first page of at the first block, the logical-to-physical table entry associating a logical address with the first page.
1. A system comprising:
a memory component comprising a plurality of blocks; and
a processing device operably coupled to the memory component, the processing device configured to perform operations comprising:
identifying a set of retired blocks of the plurality of blocks, the set of retired blocks comprising a first block;
determining that the set of retired blocks includes more than a threshold number of blocks that have been retired for more than a threshold time;
modifying first data referencing the first block to indicate that the first block is not retired; and
recreating a logical-to-physical table entry for a page of the first block, the logical-to-physical table entry associating a logical address with the page.
2. The system of claim 1 , wherein the processing device is further configured to perform operations comprising:
executing an operation at the first block;
executing an operation at a second block of the set of retired blocks;
before removing the first block from a table, determining that the operation at the first block was successful; and
determining that the operation at the second block was not successful, wherein a table entry for the second block is not modified.
3. The system of claim 1 , wherein the processing device is further configured to perform operations comprising:
executing an erase operation at the first block; and
before modifying the first data to indicate that the first block is not retired, determining that the erase operation was successful.
4. The system of claim 1 , wherein the processing device is further configured to perform operations comprising:
before recreating the logical-to-physical table entry for the page, determining that a first read operation at the first block was successful.
5. The system of claim 4 , wherein the recreating of the logical-to-physical table entry comprises reading the first logical data from a metadata location at the first block.
6. The system of claim 4 , wherein the recreating of the logical-to-physical table entry comprises:
determining that the logical-to-physical table entry describes a physical address of the page as a previously-associated physical address; and
writing the physical address of the page to a current physical address field of the logical-to-physical table entry.
7. The system of claim 1 , wherein the processing device is further configured to perform operations comprising:
before identifying the set of retired blocks, determining that firmware was loaded to the system; and
determining that the set of retired blocks includes more than a threshold number of blocks that were retired for a common reason.
8. A method, comprising:
identifying a set of retired blocks at a memory device that were retired during use of the memory device, the set of retired blocks comprising a first block;
determining that the set of retired blocks includes more than a threshold number of blocks that have been retired for more than a threshold time;
modifying a first table entry referencing the first block to indicate that the first block is not retired; and
recreating a logical-to-physical table entry for a page of the first block, the logical-to-physical table entry associating a logical address with the page.
9. The method of claim 8 , further comprising:
executing an operation at the first block of the set of retired blocks;
executing an operation at a second block of the set of retired blocks;
before modifying the first table entry to indicate that the first block is not retired, determining that the operation at the first block was successful; and
determining that the operation at the second block was not successful, wherein a table entry for the second block is not modified.
10. The method of claim 8 , further comprising:
executing an erase operation at the first block; and
before modifying the first table entry to indicate that the first block is not retired, determining that the erase operation was successful.
11. The method of claim 8 , further comprising:
before recreating the logical-to-physical table entry for the page, determining that a first read operation at the first block was successful.
12. The method of claim 11 , wherein the recreating of the logical-to-physical table entry comprises reading the first logical data from a metadata location at the first block.
13. The method of claim 11 , wherein the recreating of the logical-to-physical table entry comprises:
determining that the logical-to-physical table entry describes a physical address of the page as a previously-associated physical address; and
writing the physical address of the page to a current physical address field of the logical-to-physical table entry.
14. The method of claim 8 , further comprising:
before identifying the set of retired blocks, determining that firmware was loaded to the memory device; and
determining that the set of retired blocks includes more than a threshold number of blocks that were retired for a common reason.
15. A non-transitory machine-readable storage medium comprising instructions thereon that, when executed by a processing device, cause the processing device to perform operations comprising:
identifying a set of retired blocks at a memory device that were retired during use of the memory device, the set of retired blocks comprising a first block;
determining that the set of retired blocks includes more than a threshold number of blocks that have been retired for more than a threshold time;
modifying a first table entry referencing the first block to indicate that the first block is not retired; and
recreating a logical-to-physical table entry for a page of the first block, the logical-to-physical table entry associating a logical address with the page.
16. The machine-readable storage medium of claim 15 , further comprising instructions thereon that, when executed by the processing device, cause the processing device to perform operations comprising:
executing an operation at the first block of the set of retired blocks;
executing an operation at a second block of the set of retired blocks;
before modifying the first table entry to indicate that the first block is not retired, determining that the operation at the first block was successful; and
determining that the operation at the second block was not successful, wherein a table entry for the second block is not modified.
17. The machine-readable storage medium of claim 15 , further comprising instructions thereon that, when executed by the processing device, cause the processing device to perform operations comprising:
executing an erase operation at the first block; and
before modifying the first table entry to indicate that the first block is not retired, determining that the erase operation was successful.
18. The machine-readable storage medium of claim 15 , further comprising instructions thereon that, when executed by the processing device, cause the processing device to perform operations comprising:
before recreating the logical-to-physical table entry for the page, determining that a first read operation at the first block was successful.
19. The machine-readable storage medium of claim 15 , wherein the recreating of the logical-to-physical table entry comprises reading the first logical data from a metadata location at the first block.
20. The machine-readable storage medium of claim 19 , wherein the recreating of the logical-to-physical table entry comprises:
determining that the logical-to-physical table entry describes a physical address of the page as a previously-associated physical address; and
writing the physical address of the page to a current physical address field of the logical-to-physical table entry.