发明名称 |
METHOD AND SYSTEM OF CACHE MANAGEMENT IN A FILE SHARING SYSTEM |
摘要 |
A file sharing system, comprising a file access processor and a plurality of application support processors; and the file access processor, in turn, includes a central data access system and a storage access system for accessing a database. The data access system is provided to form directories from data in the database, and to change data in that database. Each support processor includes a local cache to acquire and hold directories formed by the data access system; and for each directory acquired by at least one support processor, the data access system further includes a directory gate and a multitude of directory change blocks holding information describing changes in the database that affect the directory. The directory change blocks established for a given directory are arranged in a first chain anchored to the directory gate established for the directory. For each support processor that has acquired at least one directory, the data access system further includes a directory acquired block for each directory acquired by the support processor. Preferably, the directory acquired blocks established for a given directory are arranged in a second chain also anchored to the directory gate established for the given directory. |
申请公布号 |
EP0312785(A3) |
申请公布日期 |
1991.03.27 |
申请号 |
EP19880115428 |
申请日期 |
1988.09.21 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
BENNETT, ROBERT BRADLEY;CATINO, ROBERT JOSEPH |
分类号 |
G06F7/22;G06F12/00;G06F12/08;G06F15/16;G06F15/177;G06F17/30;(IPC1-7):G06F15/40 |
主分类号 |
G06F7/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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