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Methodology and Apparatus for Handling Checksums for Independent Auxiliary Storage Pools

IP.com Disclosure Number: IPCOM000021607D
Original Publication Date: 2004-Jan-27
Included in the Prior Art Database: 2004-Jan-27

Publishing Venue

IBM

Abstract

Provide a solution that allows independent auxiliary storage pools (IASP) checksum data to be retrieved from a page being written without seeing any changes that my occur after the write starts and the page is cloned. This is done via a new memory access mode that allows the real address of the page to be used as the virtual address. Accesses to the write pending page can then be done without seeing any changes made to the cloned page.