System and method for restoring a virtual disk from a snapshot

Data processing: database and file management or data structures – Database design – Data structure types

Reexamination Certificate

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C707S793000

Reexamination Certificate

active

07076509

ABSTRACT:
The present invention provides a system and method for restoring a vdisk from a snapshot without the need to copy every individual block or inode from the snapshot. A vdisk restore process duplicates the inode of a vdisk within the active file system and performs a reconciliation process between the blocks of the twin inode and the snapshot inode. If the vdisk does not exist within the active file system, a new buffer tree is created that points to the data blocks stored in the snapshot.

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