International Business Machines Corporation

Mark Steven Bayus

Roger Gregory Hathorn

Steven Edward Klein

Bret Wayne Holley

Matthew J Kalos

Richard Anthony Ripberger

James C Chen

Mark P Bendyk

Bernhard Laubli

Ashwani Kumar

Takashi Suzuki

An apparatus for configuring a port in a multi-port communication adapter includes a quiesce module quiescing communications at one or more first I/O ports of a multi-port communication adapter while allowing communications at one or more second I/O ports of the multi-port communication adapter. A path module removes one or more logical paths between the one or more first I/O ports and one or more remote adapters in anticipation of taking the one or more first I/O ports offline. The offline module takes offline the one or more first I/O ports. The update module updates a port resource of the one or more first I/O ports while allowing a concurrent communication on the one or more second I/O ports of the multi-port communication adapter.

Adapter port configuration

Provided are a system and article of manufacture for establishing and requesting status on a computational resource. An operation is performed to establish a computational resource, wherein the computational resource is not available until the establish operation is completed. A determination is made as to whether a status request to determine status of the computational resource is pending before the establish operation has completed. Indication is made to resubmit the status request if there is a status request for the computational resource pending before the establish operation has completed.

System and article of manufacture for establishing and requesting status on a computational resource

An apparatus, system, and method are disclosed for updating a code image for a communication adapter. The apparatus includes a save module, an update module, and a restore module. The save module saves configuration data associated with a connection at a communication adapter. The update module updates a code image on the communication adapter. The restore module restores the configuration data in response to the code image update. Advantageously, the apparatus eliminates the need for conventional host recovery, including relogin and reestablishment of paths and connections, after the code image update.

Apparatus, system, and method for updating a code image for a communication adapter

Provided are techniques for determining a link speed. When a link between two computing devices is operational, a link speed for use in communicating across the link is stored and a remembered indicator is set to TRUE. After any event occurs that causes the link to become inoperational, in response to determining that the remembered indicator is TRUE, the stored link speed is used when attempting to make the link become operational.

Optimization of port link recovery

Disclosed are a method, apparatus, and computer program product to reduce the detrimental effects of taking resources offline. A resource is taken offline in a storage network by quiescing activity to the resource providing notification that the resource will become unavailable, and taking the resource offline.

Taking a resource offline in a storage network

A method is disclosed for updating a code image for a communication adapter. The apparatus includes a save module, an update module, and a restore module. The save module saves configuration data associated with a connection at a communication adapter. The update module updates a code image on the communication adapter. The restore module restores the configuration data in response to the code image update. Advantageously, the apparatus eliminates the need for conventional host recovery, including relogin and reestablishment of paths and connections, after the code image update.

Method for adapter code image update

Provided are a method, system, and program for establishing and requesting status on a computational resource. An operation is performed to establish a computational resource, wherein the computational resource is not available until the establish operation is completed. A determination is made as to whether a status request to determine status of the computational resource is pending before the establish operation has completed. Indication is made to resubmit the status request if there is a status request for the computational resource pending before the establish operation has completed.

Method, system, and program for establishing and requesting status on a computational resource

A log-in resource release system includes a set of lists for managing log-in requests to a processing cluster input/output port from host server input/output ports. Host servers that have been granted memory structures within a memory storage device ('configured hosts') are granted priority access to a storage processing device's input/output port ('cluster port'). If the cluster port has exhausted its log-in resources, log-on requests from non-configured hosts will be not be accepted. New log-in requests from configured hosts will cause a host connected at a link or transport layer but not an upper layer to be logged off. If no hosts are connected only at the link or transport layer, a non-configured host connected at an upper layer will be logged off. If only configured hosts are connected and only at the upper layer, the log-on request by the configured host will be denied.

Growing community of inventors

Tucson, AZ, United States of America

Mark Steven Bayus