公开(公告)号：AT525695T

公开(公告)日：2011-10-15

申请号：AT09740695

申请日：2009-10-26

Applicant: IBM

Inventor： HUTCHISON GORDON ,  MCALLISTER CAMERON ,  RAW LUCY ,  SMITH BRUCE

IPC: G06F11/14

Abstract: A method of performing a data write on a storage device comprises instructing a device driver for the device to perform a write to the storage device, registering the device driver as a transaction participant with a transaction co-ordinator, executing a flashcopy of the storage device, performing the write on the storage device, and performing a two-phase commit between device driver and transaction co-ordinator. Preferably, the method comprises receiving an instruction to perform a rollback, and reversing the data write according to the flashcopy. In a further refinement, a method of scheduling a flashcopy of a storage device comprises receiving an instruction to perform a flashcopy, ascertaining the current transaction in relation to the device, registering the device driver for the device as a transaction participant in the current transaction with a transaction co-ordinator, receiving a transaction complete indication from the co-ordinator, and executing the flashcopy for the device.