International Business Machines Corporation

The State University of New York

Jonathan Terner

Kartik Gopalan

Ping Yang

Dinuni K Fernando

Gandhi Sivakumar

Xin Wang

John Lewars

D Scott Guthridge

Rong Zeng

Rodolfo Lopez

Lin Feng Shen

Ricardo Daniel Zamora Ruvalcaba

A computer-implemented method, according to one embodiment, includes receiving, by a server from a client application, a read request for a data block. The method further includes, reading, by the server, data of the data block and checksums associated with the data block, from a data storage drive, and storing, by the server, the data of the data block and the associated checksums in a buffer. A client node is caused, by the server, to use the associated checksums to perform a validity check for the data of the data block and a transmission from the server to the client node. A computer program product, according to another embodiment, includes a computer readable storage medium having program instructions embodied therewith. The program instructions are readable and/or executable by a server to cause the server to perform the foregoing method.

Offloading a validity check for a data block from a server to be performed by a client node

A method, computer program product and computer system to automatically generate augment reality-based guides for maintenance procedures is provided. A processor retrieves non-structured text instructions to perform a maintenance procedure on a device within a data center. A processor extracts at least one imperative statement from the non-structured text instructions. A processor identifies a named entity in the extracted at least one imperative statement from the non-structured text instructions. A processor generates a mapping of the named entity to be used by an augmented reality device, where the mapping indicates the position of the named entity on the device within a data center. A processor provides to the augmented reality device the extracted at least one imperative statement and the mapping of the named entity, where the augmented reality device displays the extracted imperative statement and the mapping of the named entity to a user of the augmented reality device.

Data center guide creation for augmented reality headsets

Post-copy is one of the two key techniques (besides pre-copy) for live migration of virtual machines in data centers. Post-copy provides deterministic total migration time and low downtime for write-intensive VMs. However, if post-copy migration fails for any reason, the migrating VM is lost because the VM's latest consistent state is split between the source and destination nodes during migration. PostCopyFT provides a new approach to recover a VM after a destination or network failure during post-copy live migration using an efficient reverse incremental checkpointing mechanism. PostCopyFT was implemented and evaluated in the KVM/QEMU platform. Experimental results show that the total migration time of post-copy remains unchanged while maintaining low failover time, downtime, and application performance overhead.

Recovering a virtual machine after failure of post-copy live migration

Growing community of inventors

Beacon, NY, United States of America

Jonathan Terner