Data processing: database and file management or data structures – Data integrity – Concurrent read/write management using locks
Reexamination Certificate
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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Cesari and McKenna LLP
Lee Wilson
NetApp, Inc.
Phan Tuan-Khanh
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