Abstract: Creating an operating system dump. A main memory of a computer system is divided into at least three contiguous memory areas, comprising a primary memory area, a secondary memory area and a data memory area. A first instance of an OS (operating system) is booted into the main memory, a second instance of the operating system is loaded into the secondary memory area using the active first instance of the operating system, execution of the first active instance of the OS is stopped if a critical execution error occurs, and the computer system is re-started using the loaded second instance of the operating system which becomes the active instance of the OS. A dump of the primary memory area is created, and a third instance of the operating system is loaded into the primary memory area.

Abstract: Managing a virtual computer resource on at least one virtual machine. The managing of the virtual computer resource on the at least one virtual machine is by controlling execution of the virtual computer resource on the at least one virtual machine by a virtual machine instance, such as a firmware facility, of a trusted part of a computer system. The virtual machine instance is unique in the computer system.

Abstract: Generating a pool of random numbers for use by computer applications. Vibration sensors are placed throughout a machine and collects information theoretic entropy data from the measurement of the vibration sensors. The data is then filtered and added to an entropy pool. Applications needing a random number may acquire a number from the pool. A method, computer program product and system to generate the pool are provided.

Abstract: Managing a virtual computer resource on at least one virtual machine. The managing of the virtual computer resource on the at least one virtual machine is by controlling execution of the virtual computer resource on the at least one virtual machine by a virtual machine instance, such as a firmware facility, of a trusted part of a computer system. The virtual machine instance is unique in the computer system.

Abstract: Generating a pool of random numbers for use by computer applications. Vibration sensors are placed throughout a machine and collect entropy data from the measurements of the vibration sensors. The data is then filtered and sent via secure connection to a second machine to be added to the second machine's entropy pool. Applications needing a random number may acquire a number from the pool. A method, computer program product and system to generate the pool are provided.

Abstract: A computer-implemented method, carried out by one or more processors, for managing resources in a server environment. The method includes determining, by one or more processors, to shut down a first resource consumer, wherein the first resource consumer is assigned a first virtual resource with a first set of one or more host resources. It is determined, by one or more processors, whether a second virtual resource assigned to a second resource consumer requires the first set of one or more host resources. If the second virtual resource assigned to the second resource consumer does not require the first set of one or more host resources, it is determined, by one or more processors, not to deactivate the one or more host resources assigned to the first virtual resource.

Abstract: A computer-implemented method, carried out by one or more processors, for managing resources in a server environment. In an embodiment, the method includes determining to prepare one or more virtual resources for activation of one or more allocated host resources, based, at least in part, on virtual resource definitions. The one or more allocated host resources and the one or more virtual resources are activated. Activation of the one or more virtual resources is finalized, wherein finalizing the activation includes updating the virtual resource definitions.

Abstract: A computer-implemented method, carried out by one or more processors, for managing resources in a server environment. In an embodiment, the method includes determining to prepare one or more virtual resources for activation of one or more allocated host resources, based, at least in part, on virtual resource definitions. The one or more allocated host resources and the one or more virtual resources are activated. Activation of the one or more virtual resources is finalized, wherein finalizing the activation includes updating the virtual resource definitions.

Abstract: A computer-implemented method, carried out by one or more processors, for managing resources in a server environment. The method includes determining, by one or more processors, to shut down a first resource consumer, wherein the first resource consumer is assigned a first virtual resource with a first set of one or more host resources. It is determined, by one or more processors, whether a second virtual resource assigned to a second resource consumer requires the first set of one or more host resources. If the second virtual resource assigned to the second resource consumer does not require the first set of one or more host resources, it is determined, by one or more processors, not to deactivate the one or more host resources assigned to the first virtual resource.

Abstract: In an approach to grouping tasks initialized by a first user, one or more computer processors receive a first task initialization by a first user. The one or more computer processors determine whether one or more additional tasks contained in one or more task groups are in use by the first user. Responsive to determining one or more additional tasks contained in one or more task groups are in use, the one or more computer processors determine whether the first task is related to at least one task of the one or more additional tasks. Responsive to determining the first task is related to at least one task of the one or more additional tasks, the one or more computer processors add the first task to the task group containing the at least one related task of the one or more additional tasks.

Abstract: The invention relates to a method for managing virtual machine image disk usage comprising a disk image emulator for a virtual machine provided by a hypervisor, comprising the steps of providing at least a first disk image comprising a sequence of data blocks for accumulating write operations to the first disk image, providing at least a second disk image comprising a sequence of data blocks for permanently storing disk image data, and providing a disk cleaning process for transferring disk image data from the first disk image to the second disk image and deleting unused data blocks in the first and/or the second disk image.

Abstract: Suspending multiple virtual machines executed simultaneously a hypervisor a data processing system, including: sending, by a control instance, a request to the hypervisor to suspend virtual machines at a given future first point in time; the hypervisor determining if its virtual machines can be suspended at the first point in time, and, if the suspending is possible, returning a suspend handle to the control instance and storing the suspend handle, otherwise returning an invalid handle; when receiving a suspend handle from the hypervisor in return to the request to suspend virtual machines, the control instance sending a suspend command to the hypervisor, wherein the respective suspend handle is provided to the corresponding hypervisor; the hypervisor determining if the received suspend handle is equal to its stored handle and, if yes, suspending its virtual machines at the first point in time.

Abstract: Suspending multiple virtual machines executed simultaneously a hypervisor a data processing system, including: sending, by a control instance, a request to the hypervisor to suspend virtual machines at a given future first point in time; the hypervisor determining if its virtual machines can be suspended at the first point in time, and, if the suspending is possible, returning a suspend handle to the control instance and storing the suspend handle, otherwise returning an invalid handle; when receiving a suspend handle from the hypervisor in return to the request to suspend virtual machines, the control instance sending a suspend command to the hypervisor, wherein the respective suspend handle is provided to the corresponding hypervisor; the hypervisor determining if the received suspend handle is equal to its stored handle and, if yes, suspending its virtual machines at the first point in time.

Abstract: Replacing a source hypervisor by a target hypervisor in a system having a first level hypervisor managing multiple logical partitions to share a set of resources of a server. The source hypervisor enabling at least one source virtual machine to share resources that are assigned to a source logical partition of the multiple logical partitions where the source hypervisor runs, the target hypervisor enabling at least one target virtual machine to share resources that are assigned to a target logical partition of the multiple logical partitions where the target hypervisor runs, wherein memory segments of a physical memory of the server are assigned to the at least one source virtual machine.

Abstract: Routing communication in a data processing system. Communication is routed from a communication client having no own communication stack through a first own communication stack of a first communication bridge, and through a second own communication stack of a second communication bridge. Routing between the communication client and the first and the second communication bridges uses a communication mechanism that does not include an own communication stack. One of the first or the second communication bridges is configured to act as a master communication bridge, and the other of the second or the first communication bridges is configured to act as a slave communication bridge.

Abstract: A management system and method that generally allocates a virtual function to a virtual function definition of a virtual server, where the virtual function definition of the virtual server is previously assigned with a unique function identifier, and assigns the unique function identifier to the virtual function in response to the allocating of the virtual function, where the unique function identifier causes a discovery of the virtual function by the virtual server.

Abstract: A license management system is provided for computer program applications, which includes an exchange network connecting a plurality of peer-to-peer network servers, wherein at least one network server of the plurality of peer-to-peer network servers acts as a provider server and at least one network server acts as a user server, and each peer-to-peer network server is configured to perform a method, which includes: controlling program installations according to respective license regulations; storing executable program codes to be distributed to requesting servers; generating, storing, and dispatching a metafile including at least license information on licensing conditions for a corresponding executable program code; sending a request for transmission of the metafile for a corresponding executable program code; downloading and storing a metafile; and downloading, installing, and executing the executable program code under the controlling of program installations according to the respective license regulatio

Abstract: In an approach to grouping tasks initialized by a first user, one or more computer processors receive a first task initialization by a first user. The one or more computer processors determine whether one or more additional tasks contained in one or more task groups are in use by the first user. Responsive to determining one or more additional tasks contained in one or more task groups are in use, the one or more computer processors determine whether the first task is related to at least one task of the one or more additional tasks. Responsive to determining the first task is related to at least one task of the one or more additional tasks, the one or more computer processors add the first task to the task group containing the at least one related task of the one or more additional tasks.

Abstract: Migration of a virtual machine to a new host is coordinated while data that is mapped into virtual (swap) memory of a source instance of the virtual machine (or guest) is properly handled. Sharing rights for one or more swap devices can be modified to facilitate the use of the swap devices by a new host and a corresponding (target) instance of virtual machine running on the new host.

Abstract: Migration of a virtual machine to a new host is coordinated while data that is mapped into virtual (swap) memory of a source instance of the virtual machine (or guest) is properly handled. Sharing rights for one or more swap devices can be modified to facilitate the use of the swap devices by a new host and a corresponding (target) instance of virtual machine running on the new host.