International Business Machines Corporation

Jujjuri Venkateswararao

Robert Michael Rees

Jason Christopher Young

Malahal R Naineni

Randal Chilton Burns

Badari Pulavarty

Ralph Attila Becker-Szendy

Rajagopal Ananthanarayanan

Chandra Seetharaman

Sukadev Bhattiprolu

Narasimha Nageshrao Sharoff

Haren Myneni

Darrell D E Long

David Macnaughton Wolfe

Embodiments of the invention relate to password management of one or more data storage devices. A set of passwords are employed to manage access to the storage devices, with authentication of both passwords enabling access to the subject storage device(s) for read and/or write operation privileges. The first password is known by the user and is used as an initial input string. The second password is not known by the user and is authenticated with the subject storage device(s) through BIOS and without input from the user.

Managing access to storage media

Various copy-on-write implementations for a computing environment are presented. One copy-on-write implementation includes employing a read mapping table to perform a first virtual block to physical block mapping for use in reading a block of data of a file to be copy-on-written from physical storage for modification; and employing a different, write mapping table to perform a second virtual block to physical block mapping for use in writing a modified block of the file data to physical storage, wherein copy-on-write of the block of data is achieved using a single write operation. In another implementation, a distributed copy-on-write of a file for a client server environment is presented. This distributed copy-on-write includes performing, by a first client, copy-on-write of at least one block of data of the file to be copy-on-written, and performing, by a second client, copy-on-write of at least one other block of data of the file, wherein multiple clients perform the copy-on-write of the file.

Method, system and computer program product for implementing copy-on-write of a file

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Beaverton, OR, United States of America

Jujjuri Venkateswararao