International Business Machines Corporation

Juan J Alvarez

Charles Scott Graham

Timothy J Schimke

Jesse Paul Arroyo

Joefon Jann

Paul Gregory Crumley

Ching-Farn Eric Wu

Charles Robert Lefurgy

Malcolm Scott Allen-Ware

Guillermo Jesus Silva

Kevin Allen Hughes

A computer-implemented method includes: detecting, by one or more processors, an indication that suggests a node has crashed, wherein the node is included in a distributed computing environment; in response to the detecting, confirming by the one or more processors whether the node has crashed by performing a set of probes on the node; and in response to the confirming that the node has crashed, initiating by the one or more processors a remediation of the node.

Automatic node crash detection and remediation in distributed computing systems

The present disclosure relates to sharing an I/O device across multiple virtual machines. According to one embodiment, a computing system configures shared ownership of the I/O device between a first partition and one or more of the plurality of virtual machines. The computing system transfers partial ownership of the I/O device from the first partition to the one or more virtual machines and generates device configuration information for the I/O device. The virtual machines can use the generated device configuration information to access and configure the I/O device. Once the I/O device is configured for shared ownership, the computing system boots the one or more virtual machines.

Sharing ownership of an input/output device using a device driver partition

Systems, methods, and computer program products to perform an operation comprising executing a device driver in a private logical partition on a compute host, wherein the device driver is configured to execute in an environment different than an environment of a hypervisor of the compute host, establishing a communication channel between the private logical partition and an adjunct partition executing on the compute host, and configuring, responsive to a command sent by the adjunct partition to the device driver via the communication channel, a physical function of a single root I/O virtualization (SR-IOV) device of the host system.

Extending trusted hypervisor functions with existing device drivers

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Rochester, MN, United States of America

Juan J Alvarez