METHOD, SYSTEM, AND COMPUTER PROGRAM FOR PERFORMING DATA WRITE ON STORAGE DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a method of scheduling a flashcopy of a storage device.SOLUTION: A device driver for a storage device executing a flashcopy is registered as a transaction participant with a transaction coordinator. The transaction coordinator performs a two-phase commit. A local cache is flushed in a prepare phase before completion of a transaction. Upon receiving a transaction complete indication from the transaction coordinator, the flashcopy is executed.