公开(公告)号：WO2017059055A1

公开(公告)日：2017-04-06

申请号：PCT/US2016/054415

申请日：2016-09-29

Applicant: NETAPP, INC.

Inventor： BANERJEE, Arindam ,  HUMLICEK, Don ,  TERRILL, Scott

IPC: G06F11/10 ,  G06F12/02 ,  G06F12/06 ,  G06F12/08

CPC classification number: G06F12/0804 ,  G06F12/0868 ,  G06F12/0891 ,  G06F12/12 ,  G06F12/126 ,  G06F2212/604

Abstract: Systems and techniques for cache management are disclosed that provide improved cache performance by prioritizing particular storage stripes for cache flush operations. The systems and techniques may also leverage features of the storage devices to provide atomicity without the overhead of inter-controller mirroring. In some embodiments, the systems and techniques include a storage controller that stores data in a cache. The data is associated with one or more sectors of a storage stripe that is defined over plurality of storage devices. The storage controller identifies a locality of dirty sectors of the one or more sectors, classifies the storage stripe into a category based on the locality, provides a category ordering of the category relative to at least one other category, and flushes the storage stripe from the cache to the plurality of storage devices according to the category ordering.

Abstract translation: 公开了用于高速缓存管理的系统和技术，其通过对用于高速缓存刷新操作的特定存储条带进行优先级来提供改进的高速缓 系统和技术还可以利用存储设备的特征来提供原子性，而不需要控制器间镜像的开销。 在一些实施例中，系统和技术包括将数据存储在高速缓存中的存储控制器。 数据与在多个存储设备上定义的存储条带的一个或多个扇区相关联。 存储控制器识别一个或多个扇区的脏扇区的位置，基于该位置将存储条带分类为类别，提供类别相对于至少一个其他类别的类别顺序，并且从 根据类别排序向多个存储设备缓存。