Detecting and recovering a corrupted non-volatile random-access memory
An information handling system includes a memory manager that may detect corruption of a non-volatile random-access memory, and perform a recovery process of the non-volatile random-access memory that includes determining whether a header of the non-volatile random-access memory is corrupted. If the header is not corrupted, then a data region associated with the header may be recovered from recovery data values in a spare store in the non-volatile random-access memory. If the header is corrupted, then the header and the data region may be recovered from default data values.
1. A method comprising:
detecting, by a processor, a corruption of a non-volatile random-access memory of an information handling system;
performing a recovery process of the non-volatile random-access memory that includes:
determining whether a header of the non-volatile random-access memory is corrupted;
if the header is not corrupted, then recovering a data region associated with the header using recovery data values in a spare store of the non-volatile random-access memory;
if the header is corrupted, then recovering the header and the data region using default data values; and
resetting complementary metal-oxide-semiconductor/embedded controller values; and
rebooting the information handling system.
2. The method of claim 1 , further comprising authenticating recovered data values loaded in the non-volatile random-access memory prior to the rebooting.
3. The method of claim 1 , initializing system properties to support the recovered data values.
4. The method of claim 1 , wherein performing the recovery process further includes recovering the header and the data region using last known good data values.
5. The method of claim 1 , wherein the corruption is detected during system boot.
6. The method of claim 1 , wherein the corruption is detected at runtime.
7. The method of claim 1 , wherein the corruption is detected after a reclaim operation of the non-volatile random-access memory.
8. The method of claim 1 , wherein the recovery process is performed after failure to initialize a variable service.
9. The method of claim 1 , further comprising regenerating the header from a bit pattern of a snapshot of the header.
10. The method of claim 9 , wherein the bit pattern includes delta between the snapshot and another snapshot of the header.
11. An information handling system, comprising:
a non-volatile random-access memory device; and
a memory manager interfaced with the non-volatile random-access memory device, the memory manager configured to:
detect corruption of the non-volatile random-access memory device; and
perform a recovery process of the non-volatile random-access memory device that includes:
determine whether a header of the non-volatile random-access memory device is corrupted;
if the header is not corrupted, then recover a data region associated with the header from recovery data values in a spare store in the non-volatile random-access memory device;
if the header is corrupted, then recover the header and the data region from default data values; and
reset complementary metal-oxide-semiconductor/embedded controller values.
12. The information handling system of claim 11 , wherein the memory manager is further configured to authenticate recovered data values of the non-volatile random-access memory device prior to a reboot.
13. The information handling system of claim 11 , wherein the memory manager is further configured to regenerate the header from a bit pattern of a snapshot of the header.
14. The information handling system of claim 13 , wherein the bit pattern includes delta between the snapshot and another snapshot of the header.
15. The information handling system of claim 11 , wherein the corruption is detected during system boot.
16. The information handling system of claim 11 , wherein the corruption is detected at runtime.
17. A non-transitory computer-readable medium including code that when executed performs a method, the method comprising:
detecting corruption of a non-volatile random-access memory of an information handling system; and
performing a recovery process of the non-volatile random-access memory that includes:
determining whether a header of the non-volatile random-access memory is corrupted;
if the header is not corrupted, then recovering a data region associated with the header from recovery data values in a spare store in the non-volatile random-access memory;
if the header is corrupted, then recovering the header and the data region from default data values; and
resetting complementary metal-oxide-semiconductor/embedded controller values.
18. The method of claim 17 , further comprising authenticating recovered data values of the non-volatile random-access memory prior to a rebooting.
19. The method of claim 17 , further comprising regenerating the header from a bit pattern of a snapshot of the header.
20. The method of claim 19 , wherein the bit pattern includes delta between the snapshot and another snapshot of the header.