System and method for persistently storing lock state...

Details System and method for persistently storing lock state... System and method for persistently storing lock state...

2006-06-23

2010-11-30

Lee, Wilson (Department: 2163)

Data processing: database and file management or data structures

Data integrity

Concurrent read/write management using locks

C707S687000, C707S694000, C707S668000, C709S210000

Reexamination Certificate

active

07844584

ABSTRACT:
A system and method persistently stores lock state information associated with a file system within a storage system. Received operations that modify lock state information are stored in a non-volatile log (NVLog) within a non-volatile random access memory (NVRAM) of the storage system. During a consistency point (CP), entries from the NVLog are committed to a lock file. In the event of an error condition, lock state information may be recovered from the lock file, thereby enabling rapid reconstruction of the lock state prior to the error condition.

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