Method to trigger NVDIMM save from remote management interface
A management controller includes a microcontroller and a managed system interface for coupling the management controller to a managed system. The managed system includes a central processing unit (CPU) and a system memory comprised of non-volatile dual in-line memory module (NVDIMM). The management controller is coupled to a management network by an out-of-band interface. The management controller provides a remote management user interface that includes a selectable out-of-band NVDIMM save element. The management controller may establish a connection with an operating system agent and control the agent to perform operations including accessing a memory map to identify an NVDIMM, configuring the NVDIMM in an asynchronous DRAM refresh mode, and triggering an NVDIMM save before toggling CPU reset.
1. A management controller, comprising:
a microcontroller;
a managed system interface, configured to couple the management controller to a managed system, wherein the managed system comprises an information handling system including a central processing unit (CPU) and a system memory, accessible to the CPU, including a non-volatile dual in-line memory module (NVDIMM);
an out-of-band interface configured to couple the management controller to a management network; and
a non-transitory computer readable medium, including management controller instructions that, when executed, cause the management controller to perform operations comprising:
providing a remote management user interface, including a selectable out-of-band NVDIMM save element;
responsive to a user input signal indicating selection of the out-of-band NVDIMM save element, performing management controller operations comprising:
establishing a connection with an operating system (OS) agent; and
controlling the OS agent to perform OS agent operations comprising:
accessing a memory map to identify an NVDIMM;
configuring the NVDIMM in an asynchronous dynamic random access memory refresh mode; and
triggering an NVDIMM save; and
toggling CPU reset.
2. The management controller of claim 1 , wherein triggering the NVDIMM save comprises asserting a Save pin of an NVDIMM device via an Intelligent Platform Management Interface (IPMI) call.
3. The management controller of claim 1 , further comprising:
storing an indication of the NVDIMM save operation in persistent storage for detection during a subsequent boot sequence.
4. The management controller of claim 1 wherein the management controller operations comprise:
registering an NVDIMM_handler configured to perform said establishing of said connection and said controlling of the OS agent.
5. The management controller of claim 4 , wherein the remote management user interface includes a virtual console element configured to provide a console user interface, indicative of a display device of the managed system, to a remotely located administrator.
6. The management controller of claim 5 , wherein the console user interface includes a plurality of page selection elements including a page selection element corresponding to a power page for controlling power provided to the managed system.
7. The management controller of claim 1 , wherein providing a remote management user interface, comprising providing the remote management user interface via the out-of-band interface.
8. An information handling system management method, comprising:
providing a remote management user interface, including a selectable out-of-band NVDIMM save element;
responsive to a user input signal indicating selection of the out-of-band NVDIMM save element, performing management controller operations comprising:
establishing a connection with an operating system (OS) agent; and
controlling the OS agent to perform OS agent operations comprising:
accessing a memory map to identify an NVDIMM;
configuring the NVDIMM in an asynchronous dynamic random access memory refresh mode; and
triggering an NVDIMM save; and
toggling CPU reset.
9. The method of claim 8 , wherein triggering the NVDIMM save comprises asserting an NVDIMM save pin of the NVDIMM device via an Intelligent Platform Management Interface call.
10. The method of claim 8 , wherein the operations include:
storing an indication of the NVDIMM save operation in persistent storage for detection during a subsequent boot sequence.
11. The method of claim 8 , wherein the management controller operations comprise:
registering an NVDIMM_handler configured to perform said establishing of said connection and said controlling of the OS agent.
12. The method of claim 11 , wherein the remote management user interface includes a virtual console element configured to provide a console user interface, indicative of a display device of the managed system, to a remotely located administrator.
13. The method of claim 12 , wherein the console user interface includes a plurality of page selection elements including a page selection element corresponding to a power page for controlling power provided to the managed system.
14. The method of claim 8 , wherein providing a remote management user interface, comprising providing the remote management user interface via the out-of-band interface.
15. An information handling system comprising:
a central processing unit;
system memory, including a non-volatile dual in line memory module management controller, comprising: and
a baseboard management controller comprising:
a microcontroller;
a managed system interface, configured to couple to the central processing unit;
management controller to a managed system, wherein the managed system comprises an information handling system including a central processing unit (CPU) and a system memory, accessible to the CPU, including a non-volatile dual in-line memory module (NVDIMM);
an out-of-band interface configured to couple the management controller to a management network; and
a non-transitory computer readable medium, including management controller instructions that, when executed, cause the management controller to perform operations comprising:
providing a remote management user interface, including a selectable out-of band NVDIMM save element;
responsive to a user input signal indicating selection of the out-of band NVDIMM save element, performing management controller operations comprising:
establishing a connection with an operating system (OS) agent; and
controlling the OS agent to perform OS agent operations comprising:
accessing a memory map to identify an NVDIMM;
configuring the NVDIMM in an asynchronous dynamic random access memory refresh mode;
triggering an NVDIMM save; and
toggling CPU reset.
16. The information handling system of claim 15 , wherein triggering the NVDIMM save comprises issuing an Intelligent Platform Management Interface call to assert a save pin of the NVDIMM.
17. The information handling system of claim 15 , further comprising:
storing an indication of the NVDIMM save operation in persistent storage for detection during a subsequent boot sequence.
18. The information handling system of claim 15 wherein the management controller operations comprise:
registering an NVDIMM handler configured to perform said establishing of said connection and said controlling of the OS agent.
19. The information handling system of claim 18 , wherein the remote management user interface includes a virtual console element configured to provide a console user interface, indicative of a display device of the managed system, to a remotely located administrator.
20. The information handling system of claim 19 , wherein the console user interface includes a plurality of page selection elements including a page selection element corresponding to a power page for controlling power provided to the managed system.