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    • 1. 发明申请
    • SYSTEMS AND METHODS FOR RESTRIPING FILES IN A DISTRIBUTED FILE SYSTEM
    • 在分布式文件系统中分配文件的系统和方法
    • WO2004046971A1
    • 2004-06-03
    • PCT/US2003/036699
    • 2003-11-14
    • ISILON SYSTEMS, INC.MIKESELL, Paul, A.ANDERSON, RobPASSEY, Aaron, J.GODMAN, Peter, JohnKHAN, Hasssan, F.SCHACK, Darren, P.
    • MIKESELL, Paul, A.ANDERSON, RobPASSEY, Aaron, J.GODMAN, Peter, JohnKHAN, Hasssan, F.SCHACK, Darren, P.
    • G06F17/30
    • G06F11/1096G06F3/0607G06F3/0619G06F3/064G06F3/067G06F17/30194G06F2211/1028G06F2211/104H04N21/2318H04N21/6125
    • Systems and methods for restriping files distributed among a set of smart storage units 114, wherein data blocks for a particular stripe do not typically need to be located at any particular location on the storage units, wherein data can be typically restriped among the smart storage units with minimal data movement, and wherein data is typically protected and recoverable even if a system failure occurs during the restriping process.One embodiment relates to a method of selecting a storage unit 114 for a block of data. The method comprises identifying storage units 114 on which the block of data is currently stored; identifying an optimal location on first storage unit; determining a set of optimal storage units; if the first storage unit is one of the storage units on which the block of data is currently stored, selecting the first storage unit; and if the first storage unit is not in the list of storage units on which the block of data is currently stored, selecting one of the set of optimal storage units.Another aspect of the present invention relates to a method of restriping data stored in a plurality of smart storage devices 114 in an intelligent distributed file system 110. The method comprises identifying at least one smart storage device on which clusters of data from an existing file may be stored; storing the clusters on the identified smart storage device; determining that the clusters were successfully stored; and updating metadata related to the clusters of data to reflect new assignments.
    • 用于重新分配在一组智能存储单元114之间的文件的系统和方法,其中特定条带的数据块通常不需要位于存储单元上的任何特定位置,其中数据通常可以重新分配在智能存储单元 具有最小的数据移动,并且其中数据通常被保护和恢复,即使在重新起始过程期间发生系统故障。一个实施例涉及为数据块选择存储单元114的方法。 该方法包括:识别当前存储数据块的存储单元114; 识别第一存储单元上的最佳位置; 确定一组最佳存储单元; 如果第一存储单元是当前存储数据块的存储单元之一,则选择第一存储单元; 并且如果所述第一存储单元不在当前存储所述数据块的存储单元的列表中,则选择所述一组最佳存储单元中的一个。本发明的另一方面涉及一种重新分配存储在 智能分布式文件系统110中的多个智能存储设备114.该方法包括识别可存储来自现有文件的数据簇的至少一个智能存储设备; 将集群存储在所识别的智能存储设备上; 确定集群已成功存储; 并更新与数据集相关的元数据,以反映新的分配。