Abstract: Systems and methods related to generating machine code using a coroutine suspension mechanism are disclosed below. An asynchronous programming model utilizing coroutines may be implemented in a compiler for a high-level programming language. The compiler is configured to include functionality related to an intrinsic function for a suspend operation of a coroutine. In accordance with an aspect of the disclosure, a method is disclosed for generating machine code that includes the coroutine mechanism. The method includes: receiving source code for a program in a high-level programming language, and compiling the source code with a compiler to generate machine code for a target processor. The source code includes a caller and a coroutine called by the caller. The compiler is configured to detect an intrinsic function for a suspend operation in the source code for the coroutine. The compiler inserts low-level code in the machine code in accordance with an ABI.

Abstract: In one embodiment, a service domain router (SDR) establishes a virtual fabric interface between the SDR and at least one peer SDR in a computer network. When the SDR receives a routing advertisement from the peer SDR, where the routing advertisement provides nexthop (NH) information for one or more network routes, the SDR may add the one or more network routes to a routing information base (RIB) listing the peer SDR as a next-to-nexthop (NNH) for the network routes. A forwarding information base (FIB) on the network device then resolves the NNH for the corresponding network routes to an egress interface of the peer SDR, such that packets received at the SDR and destined along a particular route of the one or more network routes may be forwarded via the egress interface of the peer SDR.

Abstract: A server cluster comprises a physical node and a virtual host node. The physical node includes an active node running an application. The virtual host node includes an inactive virtual node. The virtual node is activated upon failure of the active node and the application is failed over to the virtual node.

Abstract: A method and systems for recovering from a failure in a virtual machine are provided. In accordance with one embodiment of the present disclosure, a method for recovering from failures in a virtual machine is provided. The method may include, in a first physical host having a host operating system and a virtual machine running on the host operating system, monitoring one or more parameters associated with a program running on the virtual machine, each parameter having a predetermined acceptable range. The method may further include determining if the one or more parameters are within their respective predetermined acceptable ranges. In response to determining that the one or more parameters associated with the program running on the virtual machine are not within their respective predetermined acceptable ranges, a management module may cause the application running on the virtual machine to be restarted.

Abstract: An information handling system comprises a power supply unit providing a controllable main power supply and a stand-by power supply, a power controller unit receiving the stand-by power supply, and a plurality of sub-systems. Each sub-system comprises a voltage regulator unit being controlled by the power controller unit.

Abstract: An information handling system includes first and second input/output (I/O) controllers, a detector for detecting an I/O controller failure, and an I/O recovery unit. The first I/O controller adaptively controls a first and a second I/O slot. The second I/O controller adaptively controls a third and a fourth I/O slot. Lastly, the I/O recovery unit, responsive to a detected I/O controller failure, operatively couples/decouples the first and second I/O slot to/from the first I/O controller, operatively couples/decouples the third and fourth I/O slot to/from the second I/O controller, and operatively decouples/couples the first and second I/O slot from/to the third and fourth I/O slot according to an I/O failure recovery protocol, the I/O failure recovery protocol provided for adapting one of either the first and second I/O controllers to operatively couple to the first, second, third and fourth I/O slots as a function of the detected I/O controller failure.

Abstract: An information handling system includes first and second input/output (I/O) controllers, a detector for detecting an I/O controller failure, and an I/O recovery unit. The first I/O controller adaptively controls a first and a second I/O slot. The second I/O controller adaptively controls a third and a fourth I/O slot. Lastly, the I/O recovery unit, responsive to a detected I/O controller failure, operatively couples/decouples the first and second I/O slot to/from the first I/O controller, operatively couples/decouples the third and fourth I/O slot to/from the second I/O controller, and operatively decouples/couples the first and second I/O slot from/to the third and fourth I/O slot according to an I/O failure recovery protocol, the I/O failure recovery protocol provided for adapting one of either the first and second I/O controllers to operatively couple to the first, second, third and fourth I/O slots as a function of the detected I/O controller failure.

Abstract: An information handling system includes first and second I/O controllers, a detector for detecting an I/O controller failure, and an I/O recovery unit. The first I/O controller adaptively controls a first and a second I/O slot. The second I/O controller adaptively controls a third and a fourth I/O slot. Lastly, the I/O recovery unit, responsive to a detected I/O controller failure, operatively couples/decouples the first and second I/O slot to/from the first I/O controller, operatively couples/decouples the third and fourth I/O slot to/from the second I/O controller, and operatively decouples/couples the first and second I/O slot from/to the third and fourth I/O slot according to an I/O failure recovery protocol, the I/O failure recovery protocol provided for adapting one of either the first and second I/O controllers to operatively couple to the first, second, third and fourth I/O slots as a function of the detected I/O controller failure.

Abstract: A method and systems for recovering from a failure in a virtual machine are provided. In accordance with one embodiment of the present disclosure, a method for recovering from failures in a virtual machine is provided. The method may include, in a first physical host having a host operating system and a virtual machine running on the host operating system, monitoring one or more parameters associated with a program running on the virtual machine, each parameter having a predetermined acceptable range. The method may further include determining if the one or more parameters are within their respective predetermined acceptable ranges. In response to determining that the one or more parameters associated with the program running on the virtual machine are not within their respective predetermined acceptable ranges, a management module may cause the application running on the virtual machine to be restarted.

Abstract: A server cluster comprises a physical node and a virtual host node. The physical node includes an active node running an application. The virtual host node includes an inactive virtual node. The virtual node is activated upon failure of the active node and the application is failed over to the virtual node.

Abstract: A method and system for storing and updating RAID configuration information in a storage site separate from both the RAID controller and RAID disk drives is disclosed. The configuration information in the storage sites are compared and the configuration of the RAID system is automatically without user intervention. The method may be used in any computer or information handling system.

Abstract: A system and method for replicating data in a computer system is disclosed. In one embodiment, data replication between a source subsystem and a target subsystem may be selectively changed between synchronous data transfer and asynchronous data transfer based on the occurrence of selected conditions. In another embodiment, a repository subsystem allows write statements to be queued during the time that the target subsystem is unable to replicate data from the source subsystem.

Abstract: A system and method for the implementation of an adaptive cache policy in a storage controller is disclosed in which a cache optimization utility monitors data access commands generated by one or more of the software applications of a server node. On the basis of one or more characteristics of the data access commands, the cache optimization utility can adjust the cache policy of the storage controller. In the case of a database application, the cache policy of the storage controller can be adjusted so that a first cache policy is applied with respect to data access commands directed to the data files of the database and a second cache policy is applied with respect to data access commands directed to transaction log files of the database.

Abstract: Embedded controller(s) in an information handling system have real-time status and activities represented by indicators, such as light emitting diodes (LEDs), associated with the embedded controller(s). These indicators may be monitored for example by operating (management software, e.g., Embedded Server Management (ESM) software. In addition, edge triggered latches and a timer detect and store flash patterns of these LED indicators so that the flash pattern information may be read by the operating management software as static signals.

Abstract: An information handling system comprises a power supply unit providing a controllable main power supply and a stand-by power supply, a power controller unit receiving the stand-by power supply, and a plurality of sub-systems. Each sub-system comprises a voltage regulator unit being controlled by the power controller unit.

Abstract: A system and method for failure recovery and failure management in a cluster network is disclosed. Following a failure of a storage enclosure or a communication link failure between storage enclosures, each server node of the network determines whether the server node can access the drives of each logical unit owned by the server node. If the server node cannot access a set of drives of the logical that include an operational set of data, an alternate server node is queried to determine if the alternate server node can access the a set of drives of the logical unit that include an operational set of data.

Abstract: A method and circuitry for reconfiguring the links of a PCI Express bus after a user hot swaps a PCI device. A computer system has been initially configured with PCI Express bus links to various endpoints, using the scaling features of the PCI Express standard. If a hot swap occurs, an SMI routine is used to signal a reconfiguration circuit to reroute unused links (or unused portions of links) to one or more other PCI devices.

Abstract: An information handling system comprises a power supply unit providing a controllable main power supply and a stand-by power supply, a power controller unit receiving the stand-by power supply, and a plurality of sub-systems. Each sub-system comprises a voltage regulator unit being controlled by the power controller unit.

Abstract: A system and method for recovering from a failure in a cluster network is disclosed in which an instance of an application of a failed network node is initiated on a second network with data representative of the operating environment of the application of the failed network node.

Abstract: A system and method for updating the firmware of storage drive in a drive array is disclosed. The method includes the steps of updating the firmware of a spare drive. The spare drive is swapped for a drive of the drive array having unupdated firmware. The content of the spare drive is built on the basis of the content of the other storage drives of the storage arrays and according to the data recovery scheme of the drive array. The firmware of the selected storage array is updated and the updated storage drive is swapped with the spare storage drive in the drive array. The content of the updated storage array is then rebuilt or restored.