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公开(公告)号：US5313628A
公开(公告)日：1994-05-17
申请号：US816350
申请日：1991-12-30
CPC分类号： G06F11/2025 , G06F11/2041
摘要： Apparatus is described for component replacement control in a data processing system, with each component being assigned a label that includes a component identifier and a replacement generation value. The apparatus includes a plurality of tables for redundantly storing replacement generation values for each component. The tables that store the replacement generation values are then updated to indicate the incremented replacement generation value for the new component. Circuitry then increments the replacement generation value assigned to a component identity that is replaced by a new component. The circuitry modifies the new component's label to indicate the incremented replacement generation value. When the system is subsequently started, the replacement generation values in each component's label are compared with the replacement generation values in the tables and wherever a match is not found, the component is rejected.
摘要翻译： 描述了用于数据处理系统中的组件更换控制的装置，其中每个组件被分配有包括组件标识符和替换生成值的标签。 该装置包括用于冗余地存储每个组件的替换生成值的多个表。 然后更新存储替换生成值的表，以指示新组件的递增替换生成值。 电路然后增加分配给由新组件替换的组件标识的替换生成值。 电路修改新组件的标签以指示增加的替换生成值。 当系统随后启动时，将每个组件标签中的替换生成值与表中的替换生成值进行比较，并且在没有找到匹配的地方，组件被拒绝。
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2.发明授权Data processing method for file status recovery includes providing a log file of atomic transactions that may span both volatile and non volatile memory 失效文件状态恢复的数据处理方法包括提供可跨越两个挥发性和非挥发性记忆的原始交易记录文件
公开(公告)号：US5201044A
公开(公告)日：1993-04-06
申请号：US509853
申请日：1990-04-16
申请人： Alexander H. Frey, Jr. , Richard C. Mosteller , Joel M. Gould , Noah R. Mendelsohn , James Perchik
发明人： Alexander H. Frey, Jr. , Richard C. Mosteller , Joel M. Gould , Noah R. Mendelsohn , James Perchik
CPC分类号： G06F11/1471
摘要： A data processing system includes both volatile and nonvolatile memories, user-inaccessible file control software and performs a method for recovering from a malfunction occurring during a file transaction that prevents accomplished microscopic transactions from being lost. The method comprises the steps of: providing a log file to maintain a record of file transactions which may span both the volatile and nonvolatile memories; recording in the portion of the log file in volatile memory, old and new data images which result during a file transaction; writing the old and new data images to a portion of the log file which is contained in nonvolatile memory, with the new data image being written after it is certain that the old data image is present in the nonvolatile memory; and in the event of a malfunction, employing the log file in nonvolatile memory to determine the status of a file transaction and rolling back the transaction in the event the malfunction occurred prior to its completion, and further assuring that all file system actions have actually occurred for transactions marked as completed.
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