International Business Machines Corporation

Steven Edward Royer

Kyle Alan Lucke

Nicholas J Rogness

Bryan Mark Logan

Charles Scott Graham

Andrew T Koch

James Anthony Pafumi

Amartey S Pearson

Gregory Richard Hintermeister

Colin Robert DeVilbiss

Bradley James Lory

David Walter Mead

Chee Peh

Jason Allan Nikolai

David M Koster

Andrew Thomas Thorstensen

Curtis Shannon Eide

Gary Dean Anderson

Jonathan Louis Kaus

Priya Paul

Adam D Reznechek

Veena Patwari

Automated dynamic load balancing across VNIC fast switchover devices including monitoring, by a resource monitor, resource utilization metrics of at least one resource used to send data along a first communications path through a hypervisor; in response to detecting, by the resource monitor based on the resource utilization metrics, that the at least one resource crosses a resource utilization threshold, sending a notification to a rebalancer, wherein the notification comprises a subset of the resource utilization metrics; generating, by the rebalancer based on the subset of the resource utilization metrics, a resource optimized mapping for the at least one resource used to send data along the first communications path; and issuing, by the rebalancer, the resource optimized mapping to the hypervisor, wherein the hypervisor reconfigures, based on the resource optimized mapping, the at least one resource used to send data along the first communications path.

Automated dynamic load balancing across virtual network interface controller fast switchover devices using a rebalancer

Automated dynamic load balancing across virtual network interface controller fast switchover devices

Systems, methods, and computer program products to perform an operation comprising receiving a first data frame and a second data frame by a device driver of a first virtual network interface controller (vNIC) of a plurality of vNICs sharing a physical network interface controller (NIC) of a computing system, storing, by the device driver of the first vNIC, the first and second data frames in a first queue for the first vNIC, generating, by the device driver of the first vNIC, an optimized data frame comprising the first and second data frames, wherein the optimized data frame specifies a modified Ethernet preamble, and sending the optimized data frame to a hypervisor of the computing system.

Router based maximum transmission unit and data frame optimization for virtualized environments

Techniques are disclosed for performing input/output (I/O) requests to two or more physical adapters in parallel. An address for at least a first page associated with a virtual I/O request is mapped to an entry in a virtual translation control entry (TCE) table. A plurality of physical adapters required to service the virtual I/O request are identified. Upon determining, in each of the identified physical adapters, that an entry in the respective physical TCE table corresponding to the physical adapter is available, for each of the identified physical adapters, the entry in the virtual TCE table is mapped to an entry in the respective physical TCE table corresponding to the physical adapter, and a physical I/O request corresponding to each physical TCE table entry is issued to the respective physical adapter.

Parallel mapping of client partition memory to multiple physical adapters

Techniques are disclosed for performing input/output (I/O) requests to two or more physical adapters in parallel. One method for performing an input/output (I/O) request includes mapping an address for at least a first page associated with a virtual I/O request to an entry in a virtual TCE table and identifying a plurality of physical adapters required to service the virtual I/O request. For each of the identified physical adapters, the entry in the virtual TCE table is mapped to an entry in a physical TCE table corresponding to the physical adapter. This method may also include, in parallel, issuing physical I/O requests to the physical adapters.

A method, system, and computer program product for encapsulating a packet within a virtualized network. The method includes writing one or more first translation control entries (TCEs) from a TCE table of a client system to a TCE table of a host system, and writing one or more second TCEs to the TCE table of the host system. The first TCEs indicate a location within the client system of payload data for the packet, and the second TCEs indicate a location within the host system of at least one of header and footer information to be included with the payload data.

Packet encapsulation with redirected DMA for software defined networks

System and method for packet encapsulation wherein translation control entries (TCEs) may redirect DMA for software defined networks

Automated management of partition service assignment to a virtual input/output (VIO) adapter is provided. Responsive to creation of a new partition service in a data processing system, a partition priority number is determined for the new partition service, and, for each VIO adapter, the partition priority numbers of the partition services currently assigned to that VIO adapter are summed. For a VIO adapter with a lowest sum of partition priority numbers, logic determines whether assigning the new partition service to that VIO adapter results in its summed partition priority number being above a predefined threshold, and the new partition service is assigned to a VIO adapter based, at least in part, on whether assigning the new partition service to the VIO adapter with the lowest sum of partition priority numbers results in that VIO adapter's summed partition priority number exceeding the predefined threshold.

Managing assignment of partition services to virtual input/output adapters

A method, apparatus, and program product for managing partitionable resources in a logically partitioned computing system is disclosed. The method includes associating each of a plurality of partitionable resources in the logically partitioned computing system with a respective file entry in a virtual file system, associating each of a plurality of partitionable resources in the logically partitioned computing system with a respective file entry in a virtual file system, and allocating a first partitionable resource among the plurality of partitionable resources to a first logical partition among the plurality of logical partitions in response to a file system operation directed to the virtual file system to organize a respective file entry for the first partitionable resource within the respective directory for the first logical partition.

Managing a logically partitioned computing system through a virtual file system

An interface is provided between a virtual cluster proxy and a virtual I/O server on a logical partitioned platform. The virtual I/O server is configured to support virtual real memory. A command is received from a virtual cluster proxy. The virtual cluster proxy identifies whether the command is a virtual real memory command or a virtualization command. Virtual real memory commands and virtualization commands are marked by the virtual cluster proxy with a virtualization marker. The virtualization marker indicates that the command is a virtual real memory command or a virtualization command. The command is then forwarded to a logical partitioned platform. A virtual memory manager intercepts the command and identifies whether the command has been marked with the virtualization marker. If the command is marked with the virtualization marker, the virtual memory manager reroutes the command to the virtual I/O server.

Virtual cluster proxy to virtual I/O server manager interface

Automated paging device management is provided for a shared memory partition data processing system. The automated approach includes managing a paging storage pool defined within one or more storage devices for holding logical memory pages external to physical memory managed by a hypervisor of the processing system. The managing includes: responsive to creation of a logical partition within the processing system, automatically defining a logical volume in the paging storage pool for use as a paging device for the new logical partition, the automatically defining occurring absent use of a filesystem, with the resultant paging device being other than a file in a filesystem; and automatically specifying the logical volume as a paging space device for the new logical partition and binding the paging space device to the new logical partition, wherein the logical volume is sized to accommodate a defined maximum memory size of the new logical partition.

Growing community of inventors

Rochester, MN, United States of America

Steven Edward Royer