Abstract: Disclosed aspects manage a shared pool of configurable computing resources. A set of scaling factor data is monitored. The set of scaling factor data is related to a workload on a configuration of the shared pool of configurable computing resources. A set of workload resource data associated with the workload is ascertained. Using the set of scaling factor data and the set of workload resource data, a triggering event is detected. In response to detecting the triggering event, a configuration action (with respect to the configuration of the shared pool of configurable computing resources) is performed.

Abstract: Receive output dynamically generated by a running program and check that output for spelling, grammar, and/or other usage errors, providing notice to a user of any errors found. The dynamically generated output includes an assembly of component parts not statically assigned in a predetermined configuration or with predetermined content, but rather generated and/or configured by the executing program as it runs.

Abstract: Self-Service Terminal (SST) automated backup and rollback techniques and SST are provided. An automated determination is made to back up the SST or a resource of that SST to a base image. An update is made to one or more resources of the SST. Automated tests and metrics are gathered and evaluated based on heuristics specific to the transactional environment of the SST. When the test and metrics fail to pass a threshold, the SST or a resource of the SST is automatically rolled back to the base image.

Abstract: A technique handles a VDM failover situation. The technique involves adjusting a configuration file on a first platform to indicate whether data managed by an initial VDM on that platform is being replicated to a second platform. The technique further involves, following a VDM failover event, creating a replacement VDM on the first platform to replace the initial VDM. The technique further involves, after the replacement VDM is created, performing an operation that controls interfaces provided by the replacement VDM. The operation enables the interfaces when the operation determines that the data managed by the initial VDM on the first platform was not being replicated to the second platform at the time of the event, and disables the interfaces when the operation determines that the data managed by the initial VDM on the first platform was being replicated to the second platform at that time of the event.

Abstract: Embodiments include a system for performance monitoring, the system includes a processor configured to perform a method. The method includes detecting, by a redundancy register, a change to a counter value corresponding to one of a plurality of hardware counters, wherein the redundancy register comprises a plurality of memory locations; storing, in each of the plurality of memory locations, a value indicating a change was detected for the counter value corresponding to the plurality of hardware counters, wherein each of the plurality of hardware counters map to one of the plurality of memory locations; performing read operation on a subset of the hardware counters, wherein members of the subset of the hardware counters are determined based upon the value indicating that the change was detected for the counter value corresponding to the plurality of hardware counters; and resetting the value stored in all the memory locations to a default value.

Abstract: Systems, apparatuses, and methods for pre-computing early age indicators for a non-shifting reservation station. A reservation station may include a plurality of entries storing a plurality of instruction operations prior to issuance to an execution unit. The reservation station may include control logic for pre-computing early age indicators for specifying which entry of each adjacent pair of entries is the oldest ready instruction operation. The early age indicators may be routed through registers and then through additional levels of control logic for determining the oldest ready instruction operation in all of the entries of the reservation station.

Abstract: In one aspect of the disclosure, progress identifiers (e.g., a plurality of flags) and/or generation numbers are utilized to determine a “correct” non-volatile random access memory (NVRAM) replay source to use during a retried switchover or early switchback. Initially, a switchover sequence is initiated. The switchover sequence includes a replay of logged information to storage devices of an aggregate to ensure data consistency of the aggregate. Progress of the switchover sequence is tracked using the progress identifiers and/or generation numbers. After an interruption during the switchover sequence, switchover is retried or an early switchback is performed. The retried switchover or early switchback decides whether to replay logged information, and, if so, determines an NVRAM replay source to replay logged information from based on states of the progress identifiers and/or comparison of the generation numbers.

Abstract: The automated recovery of the warmth of cache of an application that has been subject to a running state change that degraded the warmth of the cache. To prepare for a loss in warmth, the cache portion identifiers are captured, and corresponding cache portions are stored in an external store. Thereafter, the application experiences changes in state. In order to warm the application cache more quickly, cache portions identified by the captured cache portion identifiers are retrieved from the external data store and placed in the application cache.

Abstract: Techniques to back up a cluster resource are disclosed. In various embodiments, an active cluster node is used to take and store persistently on a cluster shared volume a snapshot of the cluster shared volume. The persistent snapshot is used to back up the cluster shared volume, including by storing checkpoint information indicating as the backup progresses which portions of the snapshot have been backed up. A cluster environment with which the cluster shared volume is associated is monitored to detect any failover or failback affecting the backup.

Abstract: A system and method of assigning resource consumers to resources using constraint programming is disclosed. The resource consumers are to be assigned to the resources in a way that achieves one or more particular objectives, such as resiliency, load balancing, and network embedding criteria. A data model, for application to a constraint programming solver, formulates the assignment problem as a set of constraints for a solution to be found. The data model includes a first set of data model elements corresponding to pairs of resources, each pair having two resources in different failure domains. The data model includes a second set of data model elements corresponding to the resource consumers. The data model includes a constraint that limits assignment of the resource consumers to the resources to: assigning the resource consumers respectively to the pairs of resources.

Abstract: A synchronous input/output (I/O) computing system includes a processor and a memory unit that stores program instructions. The system purges one or more address translation entries in response to the processor executing the program instructions to issue, via an operating system running on the synchronous I/O computing system, a synchronous I/O command indicating a request to perform a transaction. The program instructions further command the operating system to select a device table entry from a device table, load the entry into the DTC, request required address translation entries, install the required address translation entries in the address translation cache, and transfer data packets corresponding to the transaction. The program instructions further command the operating system to automatically purge the address translation cache entries associated with a transaction in response to detect that the transaction is completed.

Abstract: A network arrangement that employs a cache having copies distributed among a plurality of different locations. The cache stores state information for a session with any of the server devices so that it is accessible to at least one other server device. Using this arrangement, when a client device switches from a connection with a first server device to a connection with a second server device, the second server device can retrieve state information from the cache corresponding to the session between the client device and the first server device. The second server device can then use the retrieved state information to accept a session with the client device.

Abstract: The present disclosure describes systems and methods for detection and mitigation of malicious activity regarding user data by a network backup system. In a first aspect, a backup system receiving and deduplicating backup data from a plurality of computing devices may detect, based on changes in uniqueness or shared rates for files, atypical modifications to common files, and may take steps to mitigate any potential attack by maintaining versions of the common files prior to the modifications or locking backup snapshots. In a second aspect, the backup system may monitor file modification behaviors on a single device, relative to practices of an aggregated plurality of devices. Upon detection of potentially malicious modification activity, a previously backed up or synchronized store of data may be locked and/or duplicated, preventing any of the malicious modifications from being transferred to the backup system.

Abstract: Methods and apparatus presented herein provide distributed checkpointing in a multi-node system, such as a network of servers in a data center. When checkpointing of application state data is needed in a node, the methods and apparatus determine whether checkpoint memory space is available in the node for checkpointing the application state data. If not enough checkpoint memory space is available in the node, the methods and apparatus request and find additional checkpoint memory space from other nodes in the system. In this manner, the methods and apparatus can checkpoint the application state data into available checkpoint memory spaces distributed among a plurality of nodes. This allows for high bandwidth and low latency checkpointing operations in the multi-node system.

Abstract: Embodiments are directed to dynamically changing partitions size for a partition in a storage device and to transferring storage space between partitions in a storage device. A computer system identifies portions of free space on a storage device, where the storage device has at least one partition whose offset and length are stored in a partition table. The computer system determines where the identified free space is located relative to other storage locations on the storage device. The computer system further determines that the partition is to be dynamically resized to a new size which is specified by one or more offset and length values, and based on where the identified free space is located, dynamically transforms the partition into a logical partition, and resizes the logical partition, the logical partition's offset and length values being updated in the partition table to include the new specified offset and length values.

Abstract: Fault handling methods in a home service system, and associated household appliances and servers are disclosed. According to a fault handling method, the household appliance may send a first message to a primary server, and may decide the primary server fails when not receiving a feedback connection signal from the primary server. The household appliance may then send a second message to a backup server according to pre-stored identification information of the backup server, so as to connect to the backup server. Thus, the household appliances can directly communicate with the backup server to establish connections thereto, eliminating the need of communications between the primary and the backup server, and no extra servers would be needed, which can reduce the cost, thereby avoiding the collapse of the entire home service system due to failure of the primary server.

Abstract: This disclosure relates to a method, article of manufacture, and apparatus for updating a Java management extensions (JMX) collector. In some embodiments, this includes monitoring the output of a JMX provider details for a cloud computing platform. MBean tree structures from the cloud computing platform are analyzed. If changes in an MBean tree structure are detected, a revised JMX collector data file is prepared. If the revised JMX collector data file is determined to be different than an installed JMX collector data file, the installed JMX collector data file is backed up and replaced with the revised JMX collector data file. Data from the cloud computing platform is stored in a computer memory using configuration settings from the revised JMX collector data file.

Abstract: A customer may use a disaster recovery service to generate a disaster recovery scenario in order to make certain resources available to the customer in the event of a data region failure. The customer may specify a recovery point objective, a recovery time objective and a recovery data region for the scenario. Accordingly, the disaster recovery service may coordinate with one or more other services provided by the computing resource service provider to reproduce the customer resources and other resources necessary to support the customer resources. These reproduced resources may be transferred to the recovery data region based at least in part on the parameters specified by the customer. In the event of a data region failure, the disaster recovery service may update the domain name system to resolve any customer requests for the customer resources to the recovery data region.

Abstract: An example method is described to provide fault tolerance in a virtualized computing environment with a first fault domain and a second fault domain. The method may comprise determining whether a primary virtualized computing instance and a secondary virtualized computing instance are both in the first fault domain. The secondary virtualized computing instance may be configured as a backup for the primary virtualized computing instance and supported by a first host. The method may further comprise: in response to determination that the primary virtualized computing instance and secondary virtualized computing instance are both in the first fault domain, selecting, from the second fault domain, a second host based on a resource availability of the second host; and migrating the secondary virtualized computing instance from the first host to the second host, thereby migrating the secondary virtualized computing instance from the first fault domain to the second fault domain.

Abstract: An apparatus comprises at least one host device for hosting respective tenants of a multi-tenant environment. The apparatus further comprises a storage platform coupled to the host device and implementing storage resources for utilization by respective tenants, and a storage controller associated with the host device comprising a storage volume creation functionality and a storage volume backup functionality. The storage volume creation functionality is configured to provision portions of the storage resources to create at least one storage volume. The storage volume backup functionality is configured to provision portions of the storage resources for performing one or more respective storage volume backup or restore processes, wherein a container is respectively provisioned for each storage volume backup or restore process.

Abstract: Methods and apparatus for centralized networking configuration in distributed systems are disclosed. Networking related metrics from a plurality of sources within a distributed system are obtained at a networking configuration server. A set of rules to be used to apply a network configuration option to a particular category of traffic associated with a node of the distributed system is determined based on the collected metrics and on networking management policies. A representation of the set of rules is transmitted to the node of the distributed system to schedule network transmissions in accordance with the networking configuration option.

Abstract: An application awareness system for a virtualized infrastructure. The application awareness system may use commands in standardized protocols to obtain data from virtual entities in the virtualized infrastructure. The data may be processed to indicate applications on specific virtual entities. The application awareness system may interact with those applications to gain information about the configuration of the application, or for a distributed application, components of the application on each of the plurality of virtual entities. These techniques may be applied to both virtual machines and containers, generating data that may be used in any of multiple management functions performed on the virtual infrastructure, such as backup, monitoring and resource allocation.

Abstract: A method, system, and computer program product for managing performance of an application I/O comprising determining paths from a first host to a node in a cluster that are flaky; and initiating a failover mechanism for the application I/O from the node in the cluster to a second node in the cluster ensuring seamless execution of the application I/O in the cluster.

Abstract: A method, computer program product, and computing system for identifying a storage target that has become corrupt within a data array. The storage target includes one or more corrupt data portions. A relevant backup copy of the storage target is identified. A “broken” mirror is established between the storage target and the relevant backup copy that identifies one or more differences between the storage target and the relevant backup copy. The storage target is rebuilt by overwriting the corrupt data portions within the storage target with corresponding non-corrupt data obtained from the relevant backup copy.

Abstract: A transition tool creates a reversion snapshot of storage objects and data in a copy-free transition method. The storage objects are transitioned from the formats that the source storage system uses to the formats that the destination storage system uses. During this transition, the transition tool can prevent automatic functions of the source and destination storage systems from deleting the reversion snapshots until a request to commit the transition is received. The transition tool can also monitor the amount of storage space available to each of the storage objects. Upon detecting that the amount of storage space is below a threshold, the transition tool can take the storage objects offline so that they are unavailable to client access. In response to receiving a rollback request, the transition tool can perform operations to restore the reversion snapshot of the storage objects and data on the source storage system.

Abstract: A system, method, and computer readable medium for hybrid kernel-mode and user-mode checkpointing of multi-process applications using a character device. The computer readable medium includes computer-executable instructions for execution by a processing system. A multi-process application runs on primary hosts and is checkpointed by a checkpointer comprised of a kernel-mode checkpointer module and one or more user-space interceptors providing barrier synchronization, checkpointing thread, resource flushing, and an application virtualization space. Checkpoints may be written to storage and the application restored from said stored checkpoint at a later time. Checkpointing is transparent to the application and requires no modification to the application, operating system, networking stack or libraries. In an alternate embodiment the kernel-mode checkpointer is built into the kernel.

Abstract: A primary storage controller receives a write command from a host, wherein Fiber Channel frames corresponding to the write command have a priority indicated by the host. The primary storage controller performs a synchronous copy operation to copy data written by the write command from the primary storage controller to a secondary storage controller, wherein Fiber Channel frames corresponding to the synchronous copy operations have an identical priority to the priority indicated by the host.

Abstract: A client application server (CAS) can include a presence layer configured to compute a published presence state for a client of the given CAS that characterizes at least one of an ability and a willingness of the client to communicate with another communication endpoint. The presence layer can also be configured to provide the published presence state for the client to a presence layer of at least another CAS according to a subscription request provided from the another CAS.

Abstract: A network interface controller (NIC) for use in a server controlling a plurality of storage devices provides remote access to a plurality of clients each accessing one or more storage devices of the plurality of storage devices. The NIC is configured to receive from at least a client device an input/output (I/O) request for a storage device of the plurality of storage devices and store the I/O request in a secondary memory thereof. The I/O request is sent to the storage device and a response respective of the I/O request intended for the primary processing unit of the server is received by the NIC. The client device is sent an indication that the I/O request is completed. In some exemplary embodiments, the NIC determines if the client device has appropriate I/O permissions to access a specific data block.

Abstract: Provided are methods and systems for processing a data packet associated with a service session. The data packet directed to a first servicing node can be received by a forwarding node. The forwarding node can determine that the first servicing node is unavailable. Based on the determination, the forwarding node can select a second servicing node from a plurality of servicing nodes. The selection can be based on a high availability policy. The forwarding node can then send the data packet to the second servicing node.

Abstract: A technique, as well as select implementations thereof, pertaining to cross-mounting a device is described. The technique may involve an apparatus detecting a presence of a device not a part of the apparatus. The technique may also involve the apparatus performing an update in response to the detecting of the presence of the device. The technique may additionally involve the apparatus establishing a communication connection with the device. The technique may further involve the apparatus utilizing the device to perform one or more tasks.

Abstract: The method includes receiving a request to access an application. The method further includes identifying features of the application comprising one or both of an application dependency framework, and an application context root. The method further includes determining if a first cluster member is available to process the request for access to the application based at least in part on one or more of the identified feature of the application, a load on the first cluster member, and a resource utilization on the first cluster member. The method further includes, in response to determining that the first cluster member is not available, sending a request to enable an execution environment associated with the first cluster member, based upon the identified feature of the application.

Abstract: An incremental backup system that performs the following (not necessarily in the following order): (i) making a plurality of time-ordered journal entries; (ii) determining that a corruption condition exists; (iii) responsive to a corruption condition, constructing a first incremental mirror data set that reflects a backup data set and all journal entries up to a first corrupted journal entry which is the earliest in time journal entry, of the plurality of journal entries, that is a corrupted journal entry; (iv) responsive to a corruption condition, constructing a second incremental mirror data set that reflects the backup data set and all journal entries up to the first corrupted journal entry; and (v) checking for corruption in the first and second incremental mirror data sets to determine the latest uncorrupted version of the data set.

Abstract: A transmission device includes a transmission processing circuitry configured to transmit and receive signals to and from another transmission device through a transmission path, a first memory, a first processor coupled to the first memory, configured to perform monitoring control of the transmission processing circuitry, a second memory, and a second processor coupled to the second memory, configured to perform monitoring control of the transmission processing circuitry on behalf of the first processor when a failure occurs in the first processor, wherein when a failure occurs in a monitoring control system that performs monitoring control of the other transmission device, the second processor performs monitoring control of the other transmission device by transmitting and receiving control signals to and from the other transmission device.

Abstract: A method for detecting a software-race condition in a program includes copying a state of a transaction of the program from a first core of a multi-core processor to at least one additional core of the multi-core processor, running the transaction, redundantly, on the first core and the at least one additional core given the state, outputting a result of the first core and the at least one additional core, and detecting a difference in the results between the first core and the at least one additional core, wherein the difference indicates the software-race condition.

Abstract: Disclosed herein is a sensor controller that controls a sensor device that gives input information to a computer. The sensor controller includes a non-volatile memory that stores application software for accepting and processing touch input, an activation program that checks an activation state of the application software at a time of activation, a recovery program that executes recovery processing of the application software, and information indicating the activation state. The sensor controller further includes a processor that activates the activation program at the time of activation and executes the recovery program when the activation state indicates that activation of the application software is a second or subsequent activation and indicates that touch input has not been processed normally by the application software at a time of past activation.

Abstract: A system, a method, and a computer program product for providing a high availability internet protocol address are disclosed. At a first customer routing domain, a high availability internet protocol (“HA IP”) address is generated and configured on a first computing device located within the first customer routing domain. The HA IP address is forwarded to a second computing device located within at least one of the first customer routing domain and a second customer routing domain. The forwarded HA IP address is configured on the second computing device. The second customer routing domain is connected to the first customer routing domain using a transport mechanism. The first and second computing devices can be configured as a host for providing a communication capability to the customer routing domains based on the high availability internet protocol address.

Abstract: Configuration of servers for backup are disclosed herein. According to an aspect, a method includes storing first configuration information used to configure a first server. The method also includes storing second configuration information associated with the first server. The second configuration information may be designated as available for use by a second server when backup is needed for the first server. The method also includes determining whether backup is needed for the first server. Further, the method includes providing the first and second configuration information for use in configuring the second server to back up the first server in response to determining that backup is needed for the first server.

Abstract: Embodiments include a system for performance monitoring, the system includes a processor configured to perform a method. The method includes detecting, by a redundancy register, a change to a counter value corresponding to one of a plurality of hardware counters, wherein the redundancy register comprises a plurality of memory locations; storing, in each of the plurality of memory locations, a value indicating a change was detected for the counter value corresponding to the plurality of hardware counters, wherein each of the plurality of hardware counters map to one of the plurality of memory locations; performing read operation on a subset of the hardware counters, wherein members of the subset of the hardware counters are determined based upon the value indicating that the change was detected for the counter value corresponding to the plurality of hardware counters; and resetting the value stored in all the memory locations to a default value.

Abstract: A primary storage controller determines that a quarantined area of the primary storage controller cannot be repaired, wherein the quarantined area is infected with a virus. A query is sent to a secondary storage controller to determine whether the secondary storage controller has data that is free of virus in an area of the secondary storage controller corresponding to the quarantined area of the primary storage controller. In response to receiving a notification that the secondary storage controller has data that is free of virus, the primary storage controller is repaired to remove the virus.

Abstract: A system and method logs update queries by epoch, including at checkpoints performed at various times.

Abstract: When a CPU core (1) 101 and a CPU core (2) 102 share the execution of an OS (1) 201, a program (A) 204, and a program (B) 205, the CPU core (2) 102 withdraws from sharing the execution of the OS (1) 201, the program (A) 204, and the program (B) 205, starts a replacement OS which replaces the OS (1) 201, and switches an OS on which the program (A) 204 operates from the OS (1) 201 to the replacement OS. After the OS on which the program (A) 204 operates is switched to the replacement OS, the CPU core (1) 101 terminates the execution of the OS (1).

Abstract: A method for dynamically assembling a mobile application includes the steps of: (i) receiving a first probability of a potential failure occurring within a first computing environment; (ii) comparing the first probability to a first threshold; (iii) automatically provisioning a first portion of a second computing environment in response to the first probability exceeding the first threshold; (iv) receiving a second probability of the potential failure occurring within the first computing environment; (v) comparing the second probability to a second threshold; and (vi) automatically provisioning a second portion of the second computing environment in response to the second probability exceeding the second threshold.

Abstract: An example network device includes a set of physical network interfaces and a control unit that executes a routing protocol and a traffic impact prediction module. The traffic impact prediction module determines, prior to occurrence of a topology-changing device fault, that one or more operating characteristics of the network device are indicative of a possible fault, wherein the network device is one of a plurality of network devices in a network, determines a probability of traffic loss associated with the possible fault, and determines an adjusted routing metric for routes impacted by the possible fault based at least in part on the probability of the traffic loss. The routing protocol sends, via at least one of the set of physical network interfaces, one or more interior gateway protocol update messages specifying the adjusted routing metric to at least one other network device in the network.

Abstract: One or more techniques and/or systems are provided for collecting forensics associated with a failure of a storage controller. For example, a storage node, of a cluster environment, may comprise a service processor and a storage controller. The storage controller may manage a storage device accessible, through the storage controller, to one or more client devices. The service processor may manage the storage controller (e.g., collect operational statistics of the storage controller, perform software and/or firmware updates for the storage controller, etc.). The service processor may obtain forensics associated with a failure of the storage controller, and may provide the forensics to a cluster health monitor notwithstanding the storage controller being in an inoperable state (e.g., the service processor may send the forensics through a network interface controller of the storage node, over a non-client storage management network, to the cluster health monitor).

Abstract: A system includes a first host system, a second host system, and a remediation module. The first host system includes a processor, a first virtual machine, and a second virtual machine. The remediation module is operable to receive an event generated by a resource of the first host system and migrate the first virtual machine to the second host system in response to determining that the event affects the first virtual machine and does not affect the second virtual machine. The first host system continues to run the second virtual machine in response to determining that the event affects the first virtual machine and not the second virtual machine.

Abstract: Embodiments are directed to capturing packets on a network. A snapshot value may be provided for a network monitoring computer (NMC). If the NMC may be provided packets of a network flow, characteristics of the network flow may be monitored. If the characteristics of the network flow indicate that a flow turn may be occurring on the network flow, the snapshot value may be modified by increasing it to a provided value. If conditions indicate that the flow turn may be complete, the snapshot value maybe reset by decreasing it to another provided value. A portion of each of the packets may be captured by the NMC, such that the size of the portion may be equivalent to the snapshot value. The captured portion of each of the packets may be stored in a memory of the NMC.

Abstract: Some embodiments provide a method for extracting and adapting system configuration. The method extracts a first configuration from a first node of a first hosting system. The first node includes several resources for hosting the first configuration. The method analyzes the first configuration in order to determine attributes of the first configuration. The determined attributes are relevant to hosting the first configuration on a second node of a second hosting system having several nodes. The method generates a second configuration based on the determined attributes. The method hosts the second configuration at the second node of the second hosting system.

Abstract: A storage system includes a storage server adapted to receive data, determine parity data based upon the data, and store the data and the parity data in a storage array associated with the storage server. The data and the parity data may be sent to a second storage server.

Abstract: A method, system, and computer program product for service failover and failback using ESB are provided in the illustrative embodiments. A determination is made, by a processor at a first data processing system, whether a service being requested in a request can be provided from a failover provider system. An event log record is used to determine whether a connection failure event occurred with a primary provider system of the service. An evaluation is made whether the request can be routed to the failover provider system. The request is routed to the failover provider system.