File system for providing access to a snapshot dataset where...

Details File system for providing access to a snapshot dataset where... File system for providing access to a snapshot dataset where...

2007-05-08

2007-05-08

Channavajjala, Srirama (Department: 2164)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C707S793000

Reexamination Certificate

active

10077246

ABSTRACT:
A system, method and computer readable medium for providing dynamic links to file system snapshots is disclosed. A link corresponding to a file system inode is generated. Upon activation of the link, the snapshot identifier of the most recent snapshot is retrieved and the most recent snapshot is identified. If the most recent snapshot includes an inode corresponding to the file system inode and the file system inode includes a disk address, then the data block referenced by the disk address is retrieved. If the most recent snapshot includes an inode corresponding to the file system inode and the file system inode includes a ditto disk address (or the inode corresponding to the file system inode is not included), then the inode corresponding to the file system inode indicated in the link is retrieved and the data block corresponding to the file system inode is retrieved.

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