Parallel file system and method for independent metadata loggin
    1.
    发明授权
    Parallel file system and method for independent metadata loggin 失效
    并行文件系统和独立元数据登录方法

    公开(公告)号:US6021508A

    公开(公告)日:2000-02-01

    申请号:US893627

    申请日:1997-07-11

    IPC分类号: G06F9/46 G06F17/30 G06F11/00

    CPC分类号: G06F9/52 G06F17/30224

    摘要: A computer system having a shared disk file system running on multiple computers each having their own instance of an operating system and being coupled for parallel data sharing access to files residing on network attached shared disks. Locking techniques reduce the overhead of a token manager which is also used in the file system recovery if a computer participating in the management of shared disks becomes unavailable or failed. Synchronous and asynchronous takeover of a metadata node occurs for correction of metadata which was under modification and a new computer node to be a metadata node for that file. Locks are not constantly required to allocate new blocks on behalf of a user.

    摘要翻译: 一种计算机系统,具有在多个计算机上运行的共享磁盘文件系统,每个计算机具有其自己的操作系统实例,并被耦合用于对驻留在网络附加共享磁盘上的文件进行并行数据共享访问。 如果参与共享磁盘管理的计算机变得不可用或失败,锁定技术可以减少令牌管理器的开销,这也是在文件系统恢复中使用的。 发生元数据节点的同步和异步接管,用于修正正在修改的元数据,并将新的计算机节点作为该文件的元数据节点。 代表用户不需要锁定分配新的块。

    Mapping a logical address to a plurality on non-logical addresses
    2.
    发明授权
    Mapping a logical address to a plurality on non-logical addresses 失效
    将逻辑地址映射到多个非逻辑地址

    公开(公告)号:US06782464B2

    公开(公告)日:2004-08-24

    申请号:US09906860

    申请日:2001-07-17

    IPC分类号: G06F1200

    CPC分类号: G06F12/0284

    摘要: Communication between different entities of a computing environment is facilitated by an address mapping capability. Messages are sent between the entities to have desired tasks performed. Instead of providing within the messages the actual non-logical addresses (e.g., virtual, real addresses) used to perform the tasks, logical addresses are provided. The logical addresses are then mapped to the non-logical addresses. Each logical address can map to a plurality of non-logical addresses.

    摘要翻译: 通过地址映射能力促进了计算环境的不同实体之间的通信。 在实体之间发送消息以执行所需的任务。 代替在消息内提供用于执行任务的实际非逻辑地址(例如,虚拟,真实地址),提供逻辑地址。 然后将逻辑地址映射到非逻辑地址。 每个逻辑地址可映射到多个非逻辑地址。

    Support for single-node quorum in a two-node nodeset for a shared disk parallel file system
    3.
    发明授权
    Support for single-node quorum in a two-node nodeset for a shared disk parallel file system 失效
    支持共享磁盘并行文件系统的双节点节点中的单节点仲裁

    公开(公告)号:US06915391B2

    公开(公告)日:2005-07-05

    申请号:US09737393

    申请日:2000-12-15

    CPC分类号: G06F17/30067 G06F11/1425

    摘要: A method is provided for continuing node operations in quorum-based protocols. This is particularly valuable in the situation in which a group of nodes includes only two nodes and in which communications to a node is lost. Provision is made for adding additional status indications to each node indicating whether or not it is enabled for single-node quorum operation. Provision is also made for identifying one node as a primary node and another node as a secondary node for time-out response purposes.

    摘要翻译: 提供了一种用于在基于法定人数的协议中持续节点操作的方法。 这在一组节点仅包括两个节点并且与节点的通信丢失的情况下特别有价值。 提供了为每个节点添加附加状态指示,指示是否启用单节点仲裁操作。 还提供了将一个节点标识为主节点,另一个节点作为辅助节点进行超时响应的目的。

    Dynamic quorum adjustment
    4.
    发明授权
    Dynamic quorum adjustment 失效
    动态法定人数调整

    公开(公告)号:US06904448B2

    公开(公告)日:2005-06-07

    申请号:US10028493

    申请日:2001-12-20

    摘要: In a multinode data processing system capable of partitioning operations a method is provided for adding nodes to a configuration of nodes in a manner which node quorums are employed but in which two quorum values (ideal and enforced) are employed and in which old nodes using a given file system are distinguished from new nodes. The method prevents even the transient use of inappropriate quorum values.

    摘要翻译: 在能够进行分区操作的多节点数据处理系统中,提供了一种方法,用于以节点仲裁被使用的方式将节点添加到节点的配置,但是其中采用了两个法定值(理想和强制),并且其中使用 给定的文件系统与新节点不同。 该方法甚至可以防止即时使用不适当的法定价值。