Power loss protection in memory sub-systems
Aspects of the present disclosure provide systems and methods for improved power loss protection in a memory sub-system of a device. In particular, a power loss protection component allocates a portion of the memory sub-system to non-volatile memory. Responsive to detecting a trigger event at the device, wherein the trigger event may include asynchronous power loss of the device, the power loss protection component detects data written to a volatile cache of the memory sub-system, retrieves the data from the volatile cache, and writes the data to the portion of the memory sub-system allocated to the non-volatile memory.
1. A system comprising:
a plurality of memory components comprising a plurality of non-volatile memory components and a volatile cache; and
a processing device, operatively coupled with the plurality of memory components, to perform operations comprising:
performing a performance test upon the plurality of memory components;
identifying a portion of the plurality of memory components based on the performance test;
allocating the portion of the plurality of memory components to one or more of the plurality of non-volatile memory components;
performing a write command of data to the volatile cache;
detecting a trigger event at a device associated with the plurality of memory components, the trigger event including asynchronous power loss to the system;
retrieving the data from the volatile cache responsive to the detecting the trigger event at the device; and
writing the data to the portion of the plurality of memory components allocated to the one or more of the plurality of non-volatile memory components.
2. The system of claim 1 , wherein the plurality of memory components comprises a set of flash blocks, the portion of the plurality of memory components comprises a portion of the set of flash blocks, and allocating the portion of the plurality of memory components to the non-volatile memory further comprises:
ranking the set of flash blocks based on the performance test;
identifying the portion of the set of flash blocks based on the ranking; and
allocating the portion of the set of flash blocks to a power loss protection component that comprises a subset of the plurality of non-volatile memory components in response to the identifying the portion of the set of flash blocks based on the ranking.
3. The system of claim 2 , wherein the ranking the set of flash blocks based on the performance test comprises:
determining a write time of each flash block among the set of flash blocks; and
ranking the set of flash blocks based on the write time of each flash block among the set of flash blocks.
4. The system of claim 2 , wherein the portion of the set of flash blocks includes at least a first block and a second block, and allocating the portion of the set of flash blocks to the subset of the plurality of non-volatile memory components comprises:
logically mapping the first block to the second block.
5. The system of claim 2 , wherein performing the performance test upon the set of flash blocks comprises:
causing the device to perform the performance test upon the set of flash blocks.
6. The system of claim 2 , wherein the performance test is a first performance test, the portion of the set of flash blocks is a first portion, and identifying the portion of the set of flash blocks based on the ranking comprises:
identifying a subset of the set of flash blocks based on the ranking, the subset of the set of flash blocks comprising at least the first portion and a second portion;
allocating the first portion of the set of flash blocks to the plurality of non-volatile memory components;
reserving the second portion of the set of flash blocks;
performing a second performance test upon the first portion of the set of flash blocks;
determining a performance of the first portion of the set of flash blocks transgresses a minimum value based on the second performance test; and
allocating the second portion of the set of flash blocks to the non-volatile memory responsive to the performance of the first portion of the set of flash blocks transgressing the minimum value.
7. The system of claim 1 , wherein the plurality of non-volatile memory components comprises NAND flash memory that includes single-level cell NAND flash memory.
8. A method comprising:
performing, by at least one hardware processor, a performance test upon the plurality of memory components;
identifying, by the at least one hardware processor, a portion of the plurality of memory components based on the performance test;
allocating, by the at least one hardware processor, the portion of the plurality of memory components to one or more of the plurality of non-volatile memory components;
performing, by the at least one hardware processor, a write command of data to the volatile cache;
detecting, by the at least one hardware processor, a trigger event at a device associated with the plurality of memory components, the trigger event including asynchronous power loss to the system;
retrieving, by the at least one hardware processor, the data from the volatile cache responsive to the detecting the trigger event at the device; and
writing, by the at least one hardware processor, the data to the portion of the plurality of memory components allocated to the one or more of the plurality of non-volatile memory components.
9. The method of claim 8 , wherein the memory component comprises a set of flash blocks, the portion of the memory component comprises a portion of the set of flash blocks, and the allocation the portion of the memory component to the non-volatile memory comprises:
ranking the set of flash blocks based on the performance test;
identifying the portion of the set of flash blocks based on the ranking; and
allocating the portion of the set of flash blocks of the memory component to the non-volatile memory in response to the identifying the portion of the set of flash blocks based on the ranking.
10. The method of claim 9 , wherein the ranking the set of flash blocks based on the performance test comprises:
determining a write time of each flash block from among the set of flash blocks; and
ranking the set of flash blocks based on the write time of each flash block.
11. The method of claim 9 , wherein the portion of the set of flash blocks includes at least a first block and a second block, and the allocating the portion of the set of flash blocks to the non-volatile memory comprises:
logically mapping the first block to the second block.
12. The method of claim 9 , wherein the performing the performance test upon the set of flash blocks of the memory component comprises:
causing the device to perform the performance test upon the set of flash blocks of the memory component.
13. The method of claim 9 , wherein the performance test is a first performance test, the portion of the set of flash blocks is a first portion, and the identifying the portion of the set of flash blocks based on the ranking comprises:
identifying a subset of the set of flash blocks based on the ranking, the subset of the set of flash blocks comprising at least the first portion and a second portion;
allocating the first portion of the set of flash blocks to the non-volatile memory;
reserving the second portion of the set of flash blocks;
performing a second performance test upon the first portion of the set of flash blocks;
determining a performance of the first portion of the set of flash blocks transgresses a minimum value based on the second program time test; and
allocating the second portion of the set of flash blocks to the non-volatile memory responsive to the performance of the first portion of the set of flash blocks transgressing the minimum value.
14. The method of claim 8 , wherein the non-volatile memory comprises NAND flash memory that includes single-level cell NAND flash memory.
15. A non-transitory computer-readable storage medium comprising instructions that, when executed by a processing device, cause the processing device to:
performing a performance test upon the plurality of memory components;
identifying a portion of the plurality of memory components based on the performance test;
allocating the portion of the plurality of memory components to one or more of the plurality of non-volatile memory components;
performing a write command of data to the volatile cache;
detecting a trigger event at a device associated with the plurality of mrlemory components, the trigger event including asynchronous power loss to the system;
retrieving the data from the volatile cache responsive to the detecting the trigger event at the device; and
writing the data to the portion of the plurality of memory components allocated to the one or more of the plurality of non-volatile memory components.
16. The non-transitory computer-readable storage medium of claim 15 , wherein the memory component comprises a set of flash blocks, the portion of the memory component comprises a portion of the set of flash blocks, and the allocation the portion of the memory component to the non-volatile memory comprises:
ranking the set of flash blocks based on the performance test;
identifying the portion of the set of flash blocks based on the ranking; and
allocating the portion of the set of flash blocks of the memory component to the non-volatile memory in response to the identifying the portion of the set of flash blocks based on the ranking.
17. The non-transitory computer-readable storage medium of claim 16 , wherein the ranking the set of flash blocks based on the latency test comprises:
determining a write time of each flash block from among the set of flash blocks; and
ranking the set of flash blocks based on the write time of each flash block.
18. The non-transitory computer-readable storage medium of claim 16 , wherein the portion of the set of flash blocks includes at least a first block and a second block, and the allocating the portion of the set of flash blocks to the non-volatile memory comprises:
logically mapping the first block to the second block.
19. The non-transitory computer-readable storage medium of claim 16 , wherein the performing the performance test upon the set of flash blocks of the memory component comprises:
causing the device to perform the performance test upon the set of flash blocks of the memory component.
20. The non-transitory computer-readable storage medium of claim 16 wherein the performance test is a first program time test, the portion of the set of flash blocks is a first portion, and the identifying the portion of the set of flash blocks based on the ranking comprises:
identifying a subset of the set of flash blocks based on the ranking, the subset of the set of flash blocks comprising at least the first portion and a second portion;
allocating the first portion of the set of flash blocks to the non-volatile memory;
reserving the second portion of the set of flash blocks;
performing a second performance test upon the first portion of the set of flash blocks;
determining a performance of the first portion of the set of flash blocks transgresses a minimum value based on the second performance test; and
allocating the second portion of the set of flash blocks to the non-volatile memory responsive to the performance of the first portion of the set of flash blocks transgressing the minimum value.