Granted Patent B2

US 11,507,288 · App. 17/231,437 · Granted Nov 22, 2022

Inventors: Deepaganesh Paulraj (Bangalore, IN); Chandrasekhar Puthillathe (Bangalore, IN); Manjunath A M (Bangalore, IN)

Assignee: Dell Products L.P.

G06F3/0632G06F3/061G06F3/0679

Abstract

Claims (45)

1. A computer-implemented method of detecting and reconfiguring of boot parameters of a remote non-volatile memory express (NVMe) subsystem, the method comprising:

identifying a mapping between local boot parameters of a non-volatile memory express (NVMe) subsystem and a global unique identifier (GUID) that corresponds to the NVMe subsystem;

determining that the NVMe subsystem has been reset;

in response to determining that the NVMe subsystem has been reset:

transmitting a discovery request to the NVMe subsystem for remote boot parameters of the NVMe subsystem;

comparing values of a first subset and values of a second subset of the local boot parameters for the GUID with values of the remote boot parameters for the NVMe subsystem;

determining, based on the comparing, that values of a first subset of the remote boot parameters for the NVMe subsystem do not match with values of the local boot parameters for the GUID;

in response to determining that the values of the first subset of the remote boot parameters for the NVMe subsystem do not match with the values of the local boot parameters for the GUID, updating the values of the local boot parameters for the GUID to correspond to the values of the first subset of the remote boot parameters of the NVMe subsystem;

determining, based on the comparing, that values of a second subset of the remote boot parameters for the NVMe subsystem match with values of the local boot parameters for the GUID, the second subset of the remote boot parameters differing from the first subset of the remote boot parameters; and

in response to determining that the values of the second subset of the remote boot parameters of the NVMe substation match with the values of the local boot parameters of the GUID, retaining the values of the local boot parameters for the GUID that correspond with the second subset of the remote boot parameters of the NVMe subsystem.

2. The computer-implemented method of claim 1 , further comprising accessing the NVMe subsystem based on the updated values of the local boot parameters for the GUID.

3. The computer-implemented method of claim 1 , wherein the discovery request is transmitted from an integrated remote access controller.

4. The computer-implemented method of claim 3 , wherein the integrated remote access controller transmits the discovery request to the NVMe subsystem over a NVMe management interface (MI).

5. The computer-implemented method of claim 1 , wherein the local boot parameters include controller identifier (ID) and namespace identifier (NSID).

6. The computer-implemented method of claim 1 , wherein the remote boot parameters include controller identifier (ID) and namespace identifier (NSID).

7. An information handling system comprising a processor having access to memory media storing instructions executable by the processor to perform operations comprising, comprising:

identifying a mapping between local boot parameters of a non-volatile memory express (NVMe) subsystem and a global unique identifier (GUID) that corresponds to the NVMe subsystem;

determining that the NVMe subsystem has been reset;

in response to determining that the NVMe subsystem has been reset:

transmitting a discovery request to the NVMe subsystem for remote boot parameters of the NVMe subsystem;

comparing values of a first subset and values of a second subset of the local boot parameters for the GUID with values of the remote boot parameters for the NVMe subsystem;

determining, based on the comparing, that values of a first subset of the remote boot parameters for the NVMe subsystem do not match with values of the local boot parameters for the GUID;

in response to determining that the values of the first subset of the remote boot parameters for the NVMe subsystem do not match with the values of the local boot parameters for the GUID, updating the values of the local boot parameters for the GUID to correspond to the values of the first subset of the remote boot parameters of the NVMe subsystem;

determining, based on the comparing, that values of a second subset of the remote boot parameters for the NVMe subsystem match with values of the local boot parameters for the GUID, the second subset of the remote boot parameters differing from the first subset of the remote boot parameters; and

in response to determining that the values of the second subset of the remote boot parameters of the NVMe substation match with the values of the local boot parameters of the GUID, retaining the values of the local boot parameters for the GUID that correspond with the second subset of the remote boot parameters of the NVMe subsystem.

8. The information handling system of claim 7 , the operations further comprising accessing the NVMe subsystem based on the updated values of the local boot parameters for the GUID.

9. The information handling system of claim 7 , wherein the discovery request is transmitted from an integrated remote access controller.

10. The information handling system of claim 9 , wherein the integrated remote access controller transmits the discovery request to the NVMe subsystem over a NVMe management interface (MI).

11. The information handling system of claim 7 , wherein the local boot parameters include controller identifier (ID) and namespace identifier (NSID).

12. The information handling system of claim 7 , wherein the remote boot parameters include controller identifier (ID) and namespace identifier (NSID).

13. A non-transitory computer-readable medium storing software comprising instructions executable by one or more computers which, upon such execution, cause the one or more computers to perform operations comprising:

identifying a mapping between local boot parameters of a non-volatile memory express (NVMe) subsystem and a global unique identifier (GUID) that corresponds to the NVMe subsystem;

determining that the NVMe subsystem has been reset;

in response to determining that the NVMe subsystem has been reset:

transmitting a discovery request to the NVMe subsystem for remote boot parameters of the NVMe subsystem;

comparing values of a first subset and values of a second subset of the local boot parameters for the GUID with values of the remote boot parameters for the NVMe subsystem;

determining, based on the comparing, that values of a first subset of the remote boot parameters for the NVMe subsystem do not match with values of the local boot parameters for the GUID;

in response to determining that the values of the first subset of the remote boot parameters for the NVMe subsystem do not match with the values of the local boot parameters for the GUID, updating the values of the local boot parameters for the GUID to correspond to the values of the first subset of the remote boot parameters of the NVMe subsystem;

determining, based on the comparing, that values of a second subset of the remote boot parameters for the NVMe subsystem match with values of the local boot parameters for the GUID, the second subset of the remote boot parameters differing from the first subset of the remote boot parameters; and

in response to determining that the values of the second subset of the remote boot parameters of the NVMe substation match with the values of the local boot parameters of the GUID, retaining the values of the local boot parameters for the GUID that correspond with the second subset of the remote boot parameters of the NVMe subsystem.

14. The computer-readable medium of claim 13 , the operations further comprising accessing the NVMe subsystem based on the updated values of the local boot parameters for the GUID.

15. The computer-readable medium of claim 13 , wherein the discovery request is transmitted from an integrated remote access controller.

16. The computer-readable medium of claim 15 , wherein the integrated remote access controller transmits the discovery request to the NVMe subsystem over a NVMe management interface (MI).

17. The computer-readable medium of claim 13 , wherein the local boot parameters include controller identifier (ID) and namespace identifier (NSID).

18. The computer-readable medium of claim 13 , wherein the remote boot parameters include controller identifier (ID) and namespace identifier (NSID).

Assignments (10)

Continuity (1)