Hot-inserted devices
An information handling system may include a processor, an interface configured for hot-insertion of information handling resources, and a management controller configured to provide out-of-band management of the information handling system. The management controller may be configured to: receive a first notification that an information handling resource has been hot-removed from the interface; and in response to the first notification, disable power to the interface to prevent initialization of an information handling resource that is hot-inserted at the interface.
1. An information handling system comprising:
a processor;
an interface configured for hot-insertion of information handling resources; and
a management controller configured to provide out-of-band management of the information handling system;
wherein the management controller is configured to:
receive a first notification that an information handling resource has been hot-removed from the interface;
in response to the first notification, disable power to the interface to prevent initialization of an information handling resource that is hot-inserted at the interface;
subsequently determine that a clean-up procedure related to the interface has been completed and that the interface is ready to receive a second information handling resource; and
in response to determining that the interface is ready to receive the second information handling resource, re-enable power to the interface prior to the second information handling resource being received by the interface.
2. The information handling system of claim 1 , wherein the information handling resource is the second information handling resource.
3. The information handling system of claim 1 , wherein the determination that the interface is ready to receive the second information handling resource is based on a second notification received from an operating system executing on the information handling system.
4. The information handling system of claim 1 , wherein the information handling resource is a Peripheral Component Interconnect Express (PCIe) resource.
5. The information handling system of claim 1 , wherein the information handling resource is a storage resource.
6. The information handling system of claim 1 , wherein the information handling system is further configured to:
execute an Advanced Configuration and Power Interface (ACPI) function to determine availability of a feature relating to disabling power to the interface.
7. The information handling system of claim 1 , wherein the information handling system is further configured to change a state of an indicator light in response to the first notification.
8. A method comprising, in an information handling system that includes an interface configured for hot-insertion of information handling resources and further includes a management controller configured to provide out-of-band management of the information handling system:
the management controller receiving a first notification that an information handling resource has been hot-removed from the interface;
in response to the first notification, the management controller disabling power to the interface to prevent initialization of an information handling resource that is hot-inserted at the interface;
the management controller subsequently determining that a clean-up procedure related to the interface has been completed and that the interface is ready to receive a second information handling resource; and
in response to determining that the interface is ready to receive the second information handling resource, the management controller re-enabling power to the interface prior to the second information handling resource being received by the interface.
9. The method of claim 8 , wherein the management controller is configured to disable power to the interface by executing an Advanced Configuration and Power Interface (ACPI) function.
10. The method of claim 8 , wherein the information handling resource is the second information handling resource.
11. The method of claim 8 , further comprising the management controller changing a state of an indicator light a first time in response to the first notification.
12. The method of claim 11 , further comprising the management controller changing the state of the indicator light a second time in response to the determination that the interface is ready to receive the second information handling resource.
13. The method of claim 11 , wherein changing the state of the indicator light the first time includes a state change selected from the group consisting of:
enabling the indicator light;
disabling the indicator light;
blinking the indicator light;
changing a blink rate of the indicator light; and
changing a color of the indicator light.
14. An article of manufacture comprising a non-transitory, computer-readable medium having computer-executable code thereon that is executable by a processor of a management controller of an information handling system for:
receiving a first notification that an information handling resource has been hot-removed from an interface of the information handling system;
in response to the first notification, disabling power to the interface to prevent initialization of an information handling resource that is hot-inserted at the interface;
subsequently determining that a clean-up procedure related to the interface has been completed and that the interface is ready to receive a second information handling resource; and
in response to determining that the interface is ready to receive the second information handling resource, re-enabling power to the interface prior to the second information handling resource being received by the interface.
15. The article of claim 14 , wherein the information handling resource is the second information handling resource.
16. The article of claim 14 , wherein the determination that the interface is ready to receive the second information handling resource is based on a second notification received from an operating system executing on the information handling system.
17. The article of claim 14 , wherein the information handling resource is a Peripheral Component Interconnect Express (PCIe) resource.
18. The article of claim 14 , wherein the information handling resource is a storage resource.
19. The article of claim 14 , wherein the code is further executable for changing a state of an indicator light in response to the first notification.
20. The article of claim 14 , wherein the code is further executable for executing an Advanced Configuration and Power Interface (ACPI) function to determine availability of a feature relating to disabling power to the interface.