Patent ID: 8615489
Filing Date: 2013-12-24
Classification: G06F

Abstract:
1. In a computer system having a processing unit, system memory, and a storage device, the computer system being configured with a file system and a bitmap driver for tracking writes to the storage device by updating tracking data stored in the system memory, a method of tracking writes to the storage device during a shutdown process of the computer system which includes dismounting of the file system, said method comprising: as a response to initiation of the shutdown process and prior to dismounting the file system in connection with the shutdown process, allocating a tracking file to be stored in the storage device; and after dismounting the file system, tracking the writes to the storage device by storing the writes as tracking data into storage locations in the storage device that have been allocated to the tracking file, wherein, upon reboot of the computer system, the tracking file stored in the storage device is loaded into the system memory for use by the bitmap driver in tracking further writes to the storage device, thereby tracking the writes which occurred during the shutdown process.