International Business Machines Corporation

Gerhard H Pieper

Itzhack Goldberg

Neil Sondhi

Ovadi Somech

Dietmar Dausner

Harry R McGregor

Christopher B Moore

Daniel James Winarski

Tara Lynn Astigarraga

Various embodiments for managing data integrity in a computing storage environment, by a processor device, are provided. In one embodiment, a method comprises applying a copy-on-write technique to a cache in a computer storage system such that each write arriving in the cache is assigned to a separate new physical location and registered sequentially in an order the write arrived, for preserving a state of the computer storage system during a failure event.

Copy-on-write in cache for ensuring data integrity in case of storage system failure

A host sends an I/O transaction. The I/O transaction relates to a read or write operation for a first datum. A first listening service which manages I/O transactions for a first set of addresses receives the I/O transaction. The first listening service forwards the I/O transaction to a second listening service. The second listening service manages I/O transactions for a second set of addresses. The second listening service executes the I/O transaction at a selected address of the second set of addresses. The second listening service creates a data packet to respond to the I/O transaction. The header of the data packet includes the selected address. The second listening service transmits the data packet to the host. The host uses the selected address to update a database which includes addresses of data within.

Mapping data locations using data transmissions

Embodiments of the present invention provide a method for storing small volumes of data within a grid-scale storage system. The method includes creating a container within a storage disk. The method includes distributing data evenly between storage disks. A partition is created within the container. Data is received and stored in the partition, wherein the partition is at least as large as the data. The method may also include setting an offset associated with the partition to allow for partition expansion.

Virtual accounting container for supporting small volumes of data

Embodiments of the present invention provide a method, computer program product, and system for storing small volumes of data. The method includes creating a container within a storage disk. The method includes distributing data evenly between storage disks. A partition is created within the container. Data is received and stored in the partition, wherein the partition is at least as large as the data. The method may also include setting an offset associated with the partition to allow for partition expansion.

Growing community of inventors

Mainz, Germany

Gerhard H Pieper