公开(公告)号：US20160283160A1

公开(公告)日：2016-09-29

申请号：US14672020

申请日：2015-03-27

Applicant: INTEL CORPORATION

Inventor： Sanjeev N. TRIKA ,  Benjamin W. BOYER ,  Ravi L. SAHITA ,  Xiaoning LI ,  Faraz A. SIDDIQI

IPC: G06F3/06 ,  G06F12/14

CPC classification number: G06F3/0638 ,  G06F3/0604 ,  G06F3/0619 ,  G06F3/0632 ,  G06F3/064 ,  G06F3/0673 ,  G06F12/1466

Abstract: Provided are a method, system, and computer readable storage medium for managing access to a storage device. A logical-to-physical mapping indicates for each logical address a physical address in the storage device having current data for the logical address and version information indicating whether there is a prior version of data for the logical address. In response to the logical-to-physical mapping indicating that there is no prior version of the data for a target logical address of a write, including information on the target physical address and the physical address indicated in the logical-to-physical mapping in checkpoint information. The version information for the target logical address is updated to indicate that there is a prior version of data. Data for the write is written to a target physical address. The logical-to-physical mapping for the target logical address is updated to indicate the target physical address.

Abstract translation: 提供了一种用于管理对存储设备的访问的方法，系统和计算机可读存储介质。 逻辑到物理映射指示每个逻辑地址存储设备中具有用于逻辑地址的当前数据的物理地址和指示是否存在逻辑地址的先前版本的数据的版本信息。 响应于指示对于写入的目标逻辑地址没有先前版本的数据的逻辑到物理映射，包括关于目标物理地址和逻辑到物理映射中指示的物理地址的信息 检查点信息。 更新目标逻辑地址的版本信息以指示存在先前版本的数据。 写入数据将写入目标物理地址。 目标逻辑地址的逻辑到物理映射被更新以指示目标物理地址。