公开(公告)号：US20170123975A1

公开(公告)日：2017-05-04

申请号：US15042147

申请日：2016-02-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Derrick TSENG ,  Changho CHOI ,  Suraj Prabhakar WAGHULDE

IPC: G06F12/02 ,  G06F3/06 ,  G06F17/30

CPC classification number: G06F12/0269 ,  G06F3/0608 ,  G06F3/0617 ,  G06F3/064 ,  G06F3/0652 ,  G06F3/067 ,  G06F16/2365

Abstract: An embodiment includes a system, comprising: a server coupled to a plurality of nodes and configured to: select a node from among the nodes to perform a maintenance operation; instruct the selected node to perform the maintenance operation; and respond to access requests based on the selected node; wherein performing the maintenance operation by the selected node decreases a performance of the selected node.

公开(公告)号：US20160306822A1

公开(公告)日：2016-10-20

申请号：US14827311

申请日：2015-08-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Suraj Prabhakar WAGHULDE

IPC: G06F17/30 ,  H04L12/803 ,  G06F11/14 ,  G06F12/02

CPC classification number: G06F16/184 ,  G06F11/1402 ,  G06F12/0246 ,  G06F16/1847 ,  G06F2212/1024 ,  G06F2212/214 ,  G06F2212/7205 ,  H04L47/125

Abstract: A replication manager for a distributed storage system comprises an input/output (I/O) interface, a device characteristics sorter, a routing table reorderer and a read-query load balancer. The I/O interface receives device-characteristics information for each persistent storage device of a plurality of persistent storage devices in which one or more replicas of data are stored on the plurality of persistent storage devices. The device characteristics sorter sorts the device-characteristics information based on a free block count for each persistent storage device. The routing table reorderer reorders an ordering of the replicas on the plurality of persistent storage devices based on the free block count for each persistent storage device, and the read-query load balancer selects a replica for a received read query by routing the received read query to a location of the selected replica based the ordering of the replicas stored on the plurality of persistent storage devices.

Abstract translation: 分布式存储系统的复制管理器包括输入/​​输出（I / O）接口，设备特征分类器，路由表重定向器和读取查询负载均衡器。 I / O接口接收多个持久存储设备中的每个持久存储设备的设备特性信息，其中一个或多个数据副本存储在多个持久存储设备上。 设备特征分类器基于每个持久存储设备的空闲块计数来排序设备特征信息。 路由表重新定义器基于每个持久存储设备的空闲块计数来重新排序多个永久存储设备上的副本的排序，并且读取查询负载平衡器通过路由所接收的读取查询来选择用于接收的读取查询的副本 基于存储在多个持久存储设备上的副本的顺序，将所选副本的位置移动到所选副本的位置。