Technique for accelerating the creation of a point in time prepresentation of a virtual file system

A technique for accelerating the creation of a hyperclone of a virtual file system. A hyperclone inode is copied from the base inode. Each indirect and direct block referenced by the base inode is also copied and the block pointers within the base inode are set to reference the copied direct data bl...

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Bibliographic Details
Main Authors LEVERETT BRUCE W, TUMMALA NARAYANA R, JERNIGAN, IV RICHARD P, BERTSCHI JASON S
Format Patent
LanguageEnglish
Published 09.09.2008
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:A technique for accelerating the creation of a hyperclone of a virtual file system. A hyperclone inode is copied from the base inode. Each indirect and direct block referenced by the base inode is also copied and the block pointers within the base inode are set to reference the copied direct data blocks. A CTW bit is set within each copied block that alerts the file system that the reference indirect or direct block is not to be deallocated.
Bibliography:Application Number: US20050075953