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发明授权
CN102203741B 在存储设备上执行数据写入 失效 - 权利终止

在存储设备上执行数据写入
摘要：
本发明提供一种在存储设备上执行数据写入的方法，包含：指示该设备的设备驱动器对该存储设备执行写入；向事务协调器注册该设备驱动器作为事务参与方；执行该存储设备的闪速拷贝；在存储设备上执行写入；以及在设备驱动器与事务协调器之间执行两阶段提交。优选地，该方法包含接收执行回滚的指令，以及根据该闪速拷贝逆转数据写入。在进一步优化中，一种调度存储设备的闪速拷贝的方法，包括：接收执行闪速拷贝的指令，确定关于该设备的当前事务，向事务协调器注册该设备的设备驱动器，作为当前事务中的事务参与方，从事务协调器接收事务完成指示，以及对该设备执行闪速拷贝。
摘要（英）：

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.

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