International Business Machines Corporation

Michael James Becht

Pasquale A Catalano

Christopher J Colonna

Stephen Robert Guendert

Raymond Wong

Bruce H Ratcliff

Mushfiq U Saleheen

Edward W Chencinski

Matthias Klein

Eric N Lais

Girish Gopala Kurup

Jie Zheng

Clinton E Bubb

Howard M Haynie

Dan Vangor

Patricia G Driever

Jeffrey C Hanscom

Luke M Hopkins

Ying-Yeung Li

Deepankar Bhattacharjee

Andreas Kohler

Yuen C Tschang

Christine Soong

Chris Moretti

Luke Hopkins

A receiving network device obtains a command built to enable a control program of a device coupled to the receiving network device to obtain power consumption data of one or more selected units of a network. The command includes an indication of the one or more selected units for which the power consumption data is to be obtained. The receiving network device obtains the power consumption data of the one or more selected units indicated by the command and provides a response to the request for the power consumption data of the one or more selected units.

Command to obtain power consumption data

A method, computer system, and a computer program product for sustainable data storage is provided. An IOP discovers a path between each defined I/O adapter and its endpoint. Based on a system configuration and the discovered pathing, the IOP builds a table comprising each I/O adapter, endpoint, initial adapter state. The IOP creates an I/O adapter redundancy mapping from the table and assign performance thresholds to each I/O adapter. The IOP continuously monitors utilization of each I/O adapter, whereby based on utilization for the I/O adapter reaching a defined threshold, the IOP enables a redundant I/O adapter path, whereby the redundant I/O adapter is a proxy for the I/O adapter.

Input/output processor power management

Embodiments of the present disclosure implement hardware-based snoop logic streaming timers for input/output (I/O) communications between a host and a shared network adapter in a computing system. The disclosed embodiments describe a hardware-based snoop logic and snoop logic timer function control of input/output (I/O) processor monitoring a defined memory area to detect a completion queue entry being written to a completion queue, and implementing streaming timers and interpacket timers, based on the completion queue entry and predefined configuration information for an associated host interface connection, to provide streaming data status, interpacket arrival times, and streaming timer expiration for the associated host interface connection.

Snoop logic function streaming timers

A port speed of a port of a device is automatically set. A command is obtained at the device. The command provides an indication of a target port of the device and a selected port speed. Based on obtaining the command and using the device, a port speed of the target port is automatically set to the selected port speed.

Command to automatically set port speed of a device port

Systems and techniques for performing processor debugging over an internal interconnect fabric are described. An example techniques includes obtaining interconnect fabric traffic comprising one or more debugging commands for a first processor within a computing system. The interconnect fabric traffic with the one or more debugging commands is converted into debugging traffic with the one or more debugging commands. The debugging traffic is routed to a debug port of the first processor.

Processor debugging over an interconnect fabric

Systems and techniques for snooping input/output (I/O) events in a computing system are described. An example technique includes obtaining a configuration comprising a plurality of snoop space profiles, each snoop space profile indicating a respective range of memory addresses that map to a respective completion queue. The technique also includes monitoring input/output (I/O) traffic exchanged across a communication interface between an I/O adapter and a processor in a computing system, based on the configuration. The technique further includes performing one or more actions to assist processing of the I/O traffic, based in part on the monitoring.

Address based hardware snoop logic with configurable snoopable space settings for hardware assist

Embodiments include performing a host-initiated link reset in a storage area network (SAN). Aspects include identifying, by a host in communication with the SAN, each link in the SAN, wherein each link is defined by a pair of ports. Aspects also include obtaining, by the host, a buffer credit balance for each port in the SAN and obtaining, by the host, a buffer credit for each port in the SAN and causing a reset of a link associated with the port by transmitting a link reset record from the host to a control device of the link based on a determination that the buffer credit of a port in the SAN is below a threshold value.

Executing a host initiated link reset in a storage area network

A plurality of channels coupling at least one computing device to one or more devices are ranked. The ranking of a channel of the plurality of channels is based on one or more criteria including a size of a path group used to couple the channel to a device of the one or more devices. Based on the ranking, a selected channel of the plurality of channels is selected for which utilization state of the selected channel is to be changed. The utilization state of the selected channel is changed, in runtime, to reduce overall power consumption by the plurality of channels.

Dynamic computing environment channel enablement

An approach for extending encryption to input/output (I/O) on Peripheral Component Interconnect express (PCIe) links. The approach receives a proposal list of available encryption mechanisms. The approach selects an encryption mechanism from the proposal list, the encryption mechanism performs the encryption without encryption services from an associated Host Bus Adapter (HBA). The approach directs the I/O to the encryption mechanism.

Extending encryption to PCIe links

Aspects include includes receiving, at an input/output (I/O) processor, a transport control word (TCW) that includes an instruction to perform virtual port mirroring. The I/O processor identifies a first port to be mirrored and a virtual port to perform the mirroring. The virtual port is a first memory location in a memory. In response to outbound data being sent to the first port for transmission to a first target device and to the instruction specifying outbound port mirroring, the I/O processor stores a copy of the outbound data in the first memory location. In response to inbound data being received at the first port and to the instruction specifying inbound port mirroring, a copy of the inbound data is stored at the first memory location.

Transport control word architecture for virtual port mirroring

An approach for improving endpoint security. The approach requests security capabilities from endpoints of communications. The approach can analyze the differences between the security capabilities of the endpoints. The approach can negotiate a security capability supported by the endpoints of the communication. The approach can determine if the negotiation succeeded. If the negotiation failed, then the approach can create a report describing capabilities of the endpoints and suggesting changes to improve the endpoint security. The approach can send the report to the appropriate interested personnel.

Security capability determination

A packet of data is obtained at one device of a network. A path from the one device to a next device of the network is determined, as well as at least one toll value for the path from the one device to the next device. Based on the at least one toll value for the path from the one device to the next device, a routing toll is adjusted. The routing toll is stored in a frame used in routing the packet of data in the network.

Automatic tolling in traversal of a network

Aspects include receiving, at an input/output (I/O) processor, a transport control word (TCW) that includes an instruction to perform physical port mirroring. It is identified, by the I/O processor, a first port to be mirrored and a second port to perform the mirroring. The second port is a physical port on a host bus adapter (HBA). In response to outbound data being sent to the first port for transmission to a first target device and to the instruction specifying outbound port mirroring, the I/O processor sends a copy of the outbound data to a second target device via the second port. In response to receiving inbound data at the first port and to the instruction specifying inbound port mirroring, a copy of the inbound data is transmitted to the second target device via the second port.

Transport control word architecture for physical port mirroring

Aspects include obtaining data to be transformed. A selected transformation to be applied to the data is determined based on a storage block address list entry (SBALE) in a storage block address list (SBAL). The SBALE includes at least one field that is used in determining the selected transformation to be applied. The selected transformation is applied on the data to generate transformed data and the transformed data is placed in a location specified by the SBAL.

Storage block address list entry transform architecture

Techniques for a virtualized fabric name server for a storage area network are described herein. An aspect includes operating a storage area network, the storage area network including a hybrid control plane. Another aspect includes managing, using a virtualized fabric name server and the hybrid control plane, the storage area network, wherein the virtualized fabric name server is disposed in a container that is hosted on an element of the storage area network.

Growing community of inventors

Poughkeepsie, NY, United States of America

Michael James Becht