Failure recovery apparatus and method for distributed processing shared resource control
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United States of America Patent
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-
Nov 25, 1997
Grant Date -
N/A
app pub date -
May 30, 1995
filing date -
Aug 8, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Communicating the failure of master process controlling one or more shared resources to all processes sharing the resources. A shared resource control file is established that contains the identities of all sharing processes. Master process failure triggers a race to establish exclusive access over the shared control file. The new master reads shadow address data from the old shared control file, marks it as invalid and establishes a new control file based on renewed registrations from the sharing processes. The master process maintains the sharing process list as process begin and end sharing.
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