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    • 1. 发明申请
    • System and method for providing transaction support across a plurality of data structures
    • 用于跨多个数据结构提供事务支持的系统和方法
    • US20070214142A1
    • 2007-09-13
    • US11373041
    • 2006-03-10
    • Prabhakar GoyalPrashant RaoJatin PatelIlya Slain
    • Prabhakar GoyalPrashant RaoJatin PatelIlya Slain
    • G06F17/30
    • G06Q30/02
    • A system and method for providing transaction support across a plurality of data structures is disclosed. Generally, a transaction status directory indicating a transaction is in a prepare state is created. It is determined whether a first data structure is able to perform a first set of operations to complete the transaction. The first data structure is locked in response to determining the first data structure is able to perform the first set of instructions and instructions are sent to the first data structure to perform the set of operations. The first data structure is modified and a log of each modification of the first data structure is kept in case modification needs to be undone. It is then determined if a second data structure is able to perform a second set of operations to complete the transaction. In one embodiment, the second data structure is locked and instructions are sent to the second data structure to perform the set of operations. The second data structure is modified and a log of each modification of the second data structure is kept in case modification needs to be undone. The transaction status directory is then modified to indicate the transaction is in a commit phase, the log of modifications to the first and second data structures are deleted, and the locks of the first and second data structures are released.
    • 公开了一种用于跨多个数据结构提供事务支持的系统和方法。 通常,创建指示事务处于准备状态的事务状态目录。 确定第一数据结构是否能够执行第一组操作以完成交易。 响应于确定第一数据结构能够执行第一组指令而将第一数据结构锁定,并且指令被发送到第一数据结构以执行该组操作。 修改第一个数据结构,并保留第一个数据结构的每个修改的日志,以防修改需要撤消。 然后确定第二数据结构是否能够执行第二组操作以完成交易。 在一个实施例中,第二数据结构被锁定,并且指令被发送到第二数据结构以执行该组操作。 修改第二个数据结构,并保留第二个数据结构的每个修改的日志,以防修改需要撤消。 然后修改事务状态目录以指示事务处于提交阶段,删除对第一和第二数据结构的修改日志,并释放第一和第二数据结构的锁。
    • 2. 发明申请
    • System and method for resource lock acquisition and reclamation in a network file system environment
    • 网络文件系统环境下资源锁获取和回收的系统和方法
    • US20070214161A1
    • 2007-09-13
    • US11372878
    • 2006-03-10
    • Prabhakar GoyalPrashant RaoJatin PatelIlya Slain
    • Prabhakar GoyalPrashant RaoJatin PatelIlya Slain
    • G06F7/00
    • G06Q30/02G06F9/466G06F9/526G06F17/30171
    • A system and method for acquiring, releasing, and reclaiming a lock of a data structure in a network file system (“NFS”) is disclosed. Generally, a text file is created in a management library of the data structure. The name of the text file comprises an identifier of the lock, an identifier of a process attempting to acquire the lock, and an identifier of a machine on which the process attempting to acquire the lock is running. The identifier of the process attempting to acquire the lock and the identifier of the machine on which the process attempting to acquire the lock is running is saved in the contents of the text file and a hard line is created pointing to the text file. Finally, a number of links pointing to the text file is determined and a lock of the data structure is granted based on the number of links pointing to the text file.
    • 公开了一种用于获取,释放和回收网络文件系统(“NFS”)中的数据结构的锁的系统和方法。 通常,在数据结构的管理库中创建文本文件。 文本文件的名称包括锁的标识符,尝试获取锁的进程的标识符以及尝试获取锁的进程正在其上运行的机器的标识符。 尝试获取锁的进程的标识符和尝试获取锁的进程正在运行的机器的标识符被保存在文本文件的内容中,并且创建指向文本文件的硬线。 最后,确定指向文本文件的多个链接,并且基于指向文本文件的链接的数量来授予数据结构的锁定。