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    • 13. 发明申请
    • APPARATUS AND METHOD OF PERFORMING ERROR RECOVERING PROCESS IN ASYMMETRIC CLUSTERING FILE SYSTEM
    • 在不对称集群文件系统中执行错误恢复过程的装置和方法
    • US20110154100A1
    • 2011-06-23
    • US12971167
    • 2010-12-17
    • Sang-Min LEEYoung-Kyun KimHan Namgoong
    • Sang-Min LEEYoung-Kyun KimHan Namgoong
    • G06F11/07
    • G06F11/1092G06F2211/1028G06F2211/1059
    • The present invention relates to an apparatus and method of performing an error recovery process in an asymmetric clustering file system that has higher efficiency in data recovery when a data server in an asymmetric clustering file system fails than a method of processing the data recovery in the metadata server. The present invention includes receiving a chunk list requiring recovery by a data server included in the other data server groups than a data server group including a failed data server among a plurality of data server groups, requesting chunk data necessary for recovering an erroneous chunk from a data server in the other data server groups to the other data servers than the failed data server in the data server group, and recovering the erroneous chunk based on the chunk data by the data server in the other data server group.
    • 本发明涉及一种在不对称聚类文件系统中执行错误恢复过程的装置和方法,该系统在非对称聚类文件系统中的数据服务器故障时具有较高的数据恢复效率,而不是处理元数据中的数据恢复方法 服务器。 本发明包括接收需要由包括在其他数据服务器组中的数据服务器恢复的块列表,而不是包括多个数据服务器组中的故障数据服务器的数据服务器组,请求从一个数据服务器组中恢复错误块所需的块数据 其他数据服务器组中的数据服务器与数据服务器组中的故障数据服务器相对的其他数据服务器,并且由另一数据服务器组中的数据服务器基于块数据恢复错误块。
    • 15. 发明申请
    • METHOD FOR PROTECTION SWITCHING
    • 保护切换方法
    • US20100290340A1
    • 2010-11-18
    • US12774859
    • 2010-05-06
    • Kwang Koog LEEJeong-dong RYOOSang-Min LEEDaeub KIMJea Hoon YUTae Whan YOO
    • Kwang Koog LEEJeong-dong RYOOSang-Min LEEDaeub KIMJea Hoon YUTae Whan YOO
    • H04L12/56G06F11/00
    • H04L45/00H04L12/437H04L45/02H04L45/28
    • A method for protection switching of a ring network, which includes a plurality of nodes disposed in a ring shape, includes: allowing a node adjacent to a failure link among the plurality of nodes to generate a failure protection switching frame when the failure link is generated in the ring network; allowing the node adjacent to the failure link to transmit the failure protection switching frame to an adjacent node; allowing each of the plurality of nodes to delete address lists connected with the ring network except for an external network (hereinafter referred to as subnet) from their own forwarding table; allowing each of the plurality of nodes to transmit a subnet address list protection switching frame including a subnet address list; and allowing a node receiving the subnet address list protection switching frame to update the forwarding table on the basis of the subnet address list included in the frame.
    • 一种环形网络的保护倒换方法,包括以环形形式设置的多个节点,包括:当产生故障链路时允许与多个节点之间的故障链路相邻的节点产生故障保护倒换帧 在环网中; 允许与故障链路相邻的节点将故障保护倒换帧发送到相邻节点; 允许所述多个节点中的每一个从其自己的转发表中删除除了外部网络(以下称为子网)之外的与所述环网相连的地址列表; 允许所述多个节点中的每一个发送包括子网地址列表的子网地址列表保护切换帧; 并且允许接收子网地址列表保护倒换帧的节点根据包括在该帧中的子网地址列表来更新转发表。
    • 17. 发明申请
    • METHOD AND APPARATUS FOR PROTECTION SWITCHING IN RING NETWORK
    • 用于环网保护切换的方法和装置
    • US20100226245A1
    • 2010-09-09
    • US12706093
    • 2010-02-16
    • Jeong-Dong RYOOSang-Min LEEDaeub KIMBhum-Cheol LEE
    • Jeong-Dong RYOOSang-Min LEEDaeub KIMBhum-Cheol LEE
    • G06F11/00
    • H04L12/437H04L12/4637H04L43/0811H04L45/22H04L45/28
    • A method and apparatus for protection switching in a ring network are provided. A method for protection switching in a ring network, which includes a first ring network having first and second connection nodes and a second ring network connected with the first ring network through the first and second connection nodes, includes: receiving, by the first connection node, first and second R-APS messages transmitted from nodes belonging to the first ring network; determining, by the first connection node, the position of closure in the first ring network by using the first and second R-APS messages and topology information; receiving, by the first connection node, a topology change signal transmitted from the second ring network; and transmitting, by the first connection node, an FDB flush message with reference to the position of closure.
    • 提供了一种环网中保护倒换的方法和装置。 一种用于保护环网中保护倒换的方法,包括具有第一和第二连接节点的第一环网和通过第一和第二连接节点与第一环网连接的第二环网,包括:由第一连接节点 从属于第一环网的节点发送的第一和第二R-APS消息; 由所述第一连接节点通过使用所述第一和第二R-APS消息和拓扑信息来确定所述第一环形网络中的关闭位置; 由所述第一连接节点接收从所述第二环网发送的拓扑变化信号; 并且由第一连接节点发送参考关闭位置的FDB刷新消息。
    • 19. 发明申请
    • FILE STORAGE SYSTEM AND METHOD FOR MANAGING DUPLICATE FILES IN FILE STORAGE SYSTEM
    • 用于在文件存储系统中管理复制文件的文件存储系统和方法
    • US20090157769A1
    • 2009-06-18
    • US12140302
    • 2008-06-17
    • Sang-Min LEEMyung-Hoon ChaYoung-Kyun KimMyung-Joon Kim
    • Sang-Min LEEMyung-Hoon ChaYoung-Kyun KimMyung-Joon Kim
    • G06F12/02G06F17/30
    • G06F17/3015G06F11/2094
    • Provided are a file storage system, and a method for managing duplicate files in the file storage system. The file storage system that performs file duplication for error recovery includes a client for requesting generation of a duplicate file of a new file being stored, a metadata server for storing information associated with prestored duplicate files and determining whether a file that is identical to the new file is present among the prestored duplicate files, to limit a number of identical duplicate files to a preset number, and a data server comprising a file duplication unit and a storage unit for respectively performing file duplication and file storage under the control of the metadata server. Accordingly, file recovery can be performed while duplicate files in the system are minimized.
    • 提供了文件存储系统和用于管理文件存储系统中的重复文件的方法。 执行用于错误恢复的文件复制的文件存储系统包括用于请求生成正在存储的新文件的重复文件的客户端,用于存储与预先存储的重复文件相关联的信息的元数据服务器,以及确定与新的文件是否相同的文件 文件存在于预先存储的重复文件中,以将多个相同的重复文件限制为预设号码,以及包括文件复制单元和存储单元的数据服务器,用于分别在元数据服务器的控制下执行文件复制和文件存储 。 因此,可以在系统中的重复文件最小化的同时执行文件恢复。