International Business Machines Corporation

Senthil Rajaram

Rohit Krishna Prasad

Roger C Raphael

Venkateswararao Jujjuri

Craig Fulmer Everhart

Malahal R Naineni

Venkateswarara Jujjuri

Malahal R Nalnenl

A buffer of block addresses for use by a client for read and write operations in a client-server system is maintained. Block addresses are maintained in the buffer and are streamed to the client in response to a request for the addresses to support a read or write operation. The quantity of addresses maintained in the buffer may be dynamically adjusted in response consumption of addresses for read and write operations.

Windowing external block translations

A method and system for supporting a concurrent recordation of a change in a data file by a server while allowing an application to continue writing changes to a data file. In response to a change in a data file, a near-instantaneous version of the file is created. Metadata reflecting the change to the data file are synchronized with a version of the file in cache and recorded in persistent storage. During the process of recording metadata changes to the file, subsequent changes to the data file may continue, and metadata reflecting the changes may be recorded in a subsequent near-instantaneous version of the file which may also be synchronized with a version of the metadata in persistent storage.

Achieving cache consistency while allowing concurrent changes to metadata

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Portland, OR, United States of America

Senthil Rajaram