International Business Machines Corporation

Vinod Kumar Boddukuri

Sanket Rathi

Kiran Kumar Anumalasetty

Venkata N S Anumula

Sudhir Maddali

Rajaboina Yadagiri

Ramana R Machireddy

Abhishek Mishra

Bruce Gerard Mealey

Phani Kumar V U Ayyagari

Yadagiri Rajaboina

Venkata N Anumula

An interface superpipe is implemented in a filesystem. A filesystem in a kernel, receives a command to open a file, the command issued in the execution of a process in an application. The file is determined to be on an interface disk. It is determined that a context does not exist for the process and, in response, an adapter queue is allocated for the process in a kernel memory and mapped into a process address space associated with the process. The context information of the process is saved in the kernel memory. The filesystem may be part of a system further comprising a processor, a storage, an interface adapter in communication with the storage and sharing a memory space with the processor, and an application in communication with the filesystem.

Transparent CAPI exploitation for legacy application

An approach for avoiding overloads of network adapters. The approach receives one or more requests from one or more virtual machines, wherein the one or more requests are directed to one or more network adapters. The approach determines whether a first network adapter of the one or more network adapters is saturated. Responsive to a determination that the first network adapter is saturated, the approach sends a first busy event to a first virtual machine of the one or more virtual machines.

Avoiding overloading of network adapters in virtual environments

A method for selecting a path control module (PCM) for a logical unit number (LUN) associated with a host enabled to support multiple PCMs is provided. The method may include selecting a PCM associated with the LUN from a plurality of supported PCMs. The method may also include creating an entry in a configuration database or a configuration file associated with the host, whereby the entry maps the selected PCM with a unique ID associated with the LUN. The method may further include determining a unique ID associated with a hard disk. The method may include matching the unique ID with the created entry. The method may include selecting the PCM from the matched entry based on the matching. Additionally, the method may include loading a kernel extension corresponding to the selected PCM. The method may include configuring the LUN using the loaded kernel extension corresponding to the selected PCM.

Choosing a multipath I/O (MPIO) path control module (PCM) for a logical unit number (LUN) on a host that supports multiple PCMS

A computer implemented method processes STREAMS messages over an Infiniband system area network. STREAMS messages received at a STREAMS over Infiniband module from a STREAMS based application are encapsulated in Infiniband verbs to create an encapsulated STREAMS message. A STREAMS identifier header is appended onto the Infiniband verb. The STREAMS over Infiniband module forwards the encapsulated STREAMS message to a streams interface layer where the encapsulated STREAMS message is then forwarded to a host channel adapter of the Infiniband system area network.

Processing STREAMS messages over a system area network

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Hyderabad Telangana, India

Vinod Kumar Boddukuri