System and method for flexible file encapsulation through latent levels
of isolation
    3.
    发明授权
    System and method for flexible file encapsulation through latent levels of isolation 失效
    通过潜在的隔离级别灵活地进行文件封装的系统和方法

    公开(公告)号:US6023711A

    公开(公告)日:2000-02-08

    申请号:US486029

    申请日:1995-06-08

    IPC分类号: G06F12/08

    CPC分类号: G06F12/08 Y10S707/99956

    摘要: A method, program, and system provide flexibility when a PFS requests a memory object reference from a File Server's Pager so that it can map the object in memory. The PFS supplies a reference in return that allows the pager to obtain a mapping of a data region within that memory object, the mapping being a layout of a region in that memory object. The method divides functions performed by a general purpose pager into function-subsets and associates the function-subsets with a set of flags passed in on an original memory object reference request. The method then integrates the functions required by the pager for that specific memory object to become part of the object's pager attributes and links the set of flags to a set of PFS call-back functions that represent customized functions that the PFS selectively replaces. In this manner, the PFS can dynamically override a sequence of base methods used to access data on a memory object by memory object basis.

    摘要翻译: 当PFS从文件服务器的寻呼机请求存储器对象引用以使其可以将对象映射到存储器中时,方法,程序和系统提供灵活性。 PFS提供了一个返回的参考,允许寻呼机获取该存储器对象内的数据区域的映射,该映射是该存储器对象中的区域的布局。 该方法将通用寻呼机执行的功能划分为功能子集,并将功能子集与传入原始内存对象引用请求的一组标志相关联。 该方法然后将该特定存储器对象的寻呼机所需的功能集成成为对象的寻呼机属性的一部分,并将该组标志链接到一组PFS回调函数,这些函数表示PFS有选择地替换的自定义函数。 以这种方式,PFS可以通过存储器对象来动态地覆盖用于访问存储器对象上的数据的基本方法序列。

    Virtual drives in an automated storage library
    4.
    发明授权
    Virtual drives in an automated storage library 失效
    自动存储库中的虚拟驱动器

    公开(公告)号:US5386516A

    公开(公告)日:1995-01-31

    申请号:US902470

    申请日:1992-06-19

    摘要: A method for servicing a mount request in an automated storage library in which all of the peripheral storage devices therein are occupied and which permits an active data storage medium to be temporarily demounted and subsequently remounted in any subsequently available peripheral storage device is disclosed. To service a mount request requiring that a data storage medium be demounted, the access information for the data storage medium to be demounted is first retained. After demounting and servicing of the mount request, the retained access information is used to permit remounting of the previously mounted data storage medium in any subsequently available peripheral storage device, thereby minimizing the risk of delay in remounting. The method also allows for optional parameters to prevent temporary demounting in an automated storage library, or to prevent temporary demounting of particular data storage media. An automated storage library and program product employing the method are also disclosed.

    摘要翻译: 公开了一种在自动化存储库中维护安装请求的方法,其中所有外围存储设备都被占用,并且允许临时拆卸活动数据存储介质并随后重新安装在随后可用的外围存储设备中。 为了服务要求卸载数据存储介质的安装请求,首先保留要卸载的数据存储介质的访问信息。 在卸载和维护安装请求之后,保留的访问信息用于允许将先前安装的数据存储介质重新安装在任何随后可用的外围存储设备中,从而最小化重新安装延迟的风险。 该方法还允许可选参数来防止自动存储库中的临时拆卸,或者防止特定数据存储介质的临时拆卸。 还公开了采用该方法的自动存储库和程序产品。

    Generic error recovery
    5.
    发明授权
    Generic error recovery 失效
    一般错误恢复

    公开(公告)号:US5159597A

    公开(公告)日:1992-10-27

    申请号:US525927

    申请日:1990-05-21

    摘要: An error recovery subsystem which can be easily modified for use with any physical hardware which is being monitored is disclosed. The error recovery subsystem employs a user editable file including the rules for defining the system state, the error states, and the sequences of recovery actions to be taken depending upon the comparison between the system state and the error states. The rules for defining the system state, include don't care variables, and the sequences of recovery actions are specified using an index into a set of elemental recovery actions. Because the system state, error state, and sequence of recovery actions are defined in a user editable file modifications to the error recovery scheme can be made without recompiling the error recovery subsystem program code. Such modifications to the error recovery subsystem may therefore be made on a real time basis. A method for recovering from an error and a program product therefore are also disclosed.

    Preemptive demount in an automated storage library
    8.
    发明授权
    Preemptive demount in an automated storage library 失效
    自动存储库中的抢占式卸载

    公开(公告)号:US5239650A

    公开(公告)日:1993-08-24

    申请号:US526256

    申请日:1990-05-21

    摘要: A method for selecting data storage media for demount in an automated storage library, and an automated storage library and program product therefor are disclosed. Preemptive demount of storage media is permitted when all peripheral storage devices in the library are occupied and one or more of such devices remains inactive for a predetermined time. Storage media may be demounted to service existing mount requests, provide the peripheral storage devices in which the media are mounted are inactive. There is also a need, however, to ensure the availability of an empty device to service future mount requests, particularly in libraries having only a single gripper mechanism. Thus, even when no mount requests are pending, the status of the peripheral storage devices is continually monitored. If the peripheral storage devices are all occupied, and one or more of such devices remains inactive for the predetermined time, the least recently used storage medium is demounted and transferred to a storage cell in the library.

    摘要翻译: 公开了一种在自动存储库中选择用于拆卸的数据存储介质的方法,以及用于其的自动存储库和程序产品。 库中的所有外围存储设备被占用并且一个或多个这样的设备在预定时间内保持不活动状态时,允许存储介质的抢先卸载。 可以拆卸存储介质以服务现有的安装请求,提供其中安装介质的外围存储设备不活动。 然而,还需要确保空设备的可用性来为未来的安装请求提供服务,特别是在仅具有单个夹持机构的库中。 因此,即使没有挂载请求正在等待,也会不断监视外围存储设备的状态。 如果外围存储设备都被占用,并且这些设备中的一个或多个在预定时间内保持不活动,则最少使用的存储介质被拆卸并传送到库中的存储单元。